fix(webui): repair audit actions and CPU burn flow - v3.15

Web UI / logs:
- Strip ANSI escape codes and handle \r (progress bars) in task log output
- Add USB export API + UI card on Export page (list removable devices, write audit JSON or support bundle)
- Add Display Resolution card in Tools (xrandr-based, per-output mode selector)
- Dashboard: audit status banner with auto-reload when audit task completes

Boot & install:
- bee-web starts immediately with no dependencies (was blocked by audit + network)
- bee-audit.service redesigned: waits for bee-web healthz, sleeps 60s, enqueues audit via /api/audit/run (task system)
- bee-install: fix GRUB UEFI — grub-install exit code was silently ignored (|| true); add --no-nvram fallback; always copy EFI/BOOT/BOOTX64.EFI fallback path
- Add grub-efi-amd64, grub-pc, grub-efi-amd64-signed, shim-signed to package list (grub-install requires these, not just -bin variants)
- memtest hook: fix binary/boot/ not created before cp; handle both Debian (no extension) and upstream (x64.efi) naming
- bee-openbox-session: increase healthz wait from 30s to 120s

KVM console stability:
- runCmdJob: syscall.Setpriority(PRIO_PROCESS, pid, 10) on all stress subprocesses
- lightdm.service.d: Nice=-5 so X server preempts stress processes

Packages: add btop

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

PLAN.md

@@ -343,9 +343,9 @@ Planned code shape:
 - `bee tui` can rerun the audit manually
 - `bee tui` can export the latest audit JSON to removable media
 - `bee tui` can show health summary and run NVIDIA/memory/storage acceptance tests
-- NVIDIA SAT now includes a lightweight in-image GPU stress step via `bee-gpu-stress`
+- NVIDIA SAT now includes a lightweight in-image GPU stress step via `bee-gpu-burn`
 - SAT summaries now expose `overall_status` plus per-job `OK/FAILED/UNSUPPORTED`
-- Memory/GPU SAT runtime defaults can be overridden via `BEE_MEMTESTER_*` and `BEE_GPU_STRESS_*`
+- Memory SAT runtime defaults can be overridden via `BEE_MEMTESTER_*`
 - removable export requires explicit target selection, mount, confirmation, copy, and cleanup
 
 ### 2.6 — Vendor utilities and optional assets

audit/cmd/bee/main.go

@@ -1,11 +1,13 @@
 package main
 
 import (
+	"context"
 	"flag"
 	"fmt"
 	"io"
 	"log/slog"
 	"os"
+	"runtime/debug"
 	"strings"
 
 	"bee/audit/internal/app"
@@ -16,6 +18,37 @@ import (
 
 var Version = "dev"
 
+func buildLabel() string {
+	label := strings.TrimSpace(Version)
+	if label == "" {
+		label = "dev"
+	}
+	if info, ok := debug.ReadBuildInfo(); ok {
+		var revision string
+		var modified bool
+		for _, setting := range info.Settings {
+			switch setting.Key {
+			case "vcs.revision":
+				revision = setting.Value
+			case "vcs.modified":
+				modified = setting.Value == "true"
+			}
+		}
+		if revision != "" {
+			short := revision
+			if len(short) > 12 {
+				short = short[:12]
+			}
+			label += " (" + short
+			if modified {
+				label += "+"
+			}
+			label += ")"
+		}
+	}
+	return label
+}
+
 func main() {
 	os.Exit(run(os.Args[1:], os.Stdout, os.Stderr))
 }
@@ -139,7 +172,6 @@ func runAudit(args []string, stdout, stderr io.Writer) int {
 	return 0
 }
 
-
 func runExport(args []string, stdout, stderr io.Writer) int {
 	fs := flag.NewFlagSet("export", flag.ContinueOnError)
 	fs.SetOutput(stderr)
@@ -299,6 +331,7 @@ func runWeb(args []string, stdout, stderr io.Writer) int {
 
 	if err := webui.ListenAndServe(*listenAddr, webui.HandlerOptions{
 		Title:       *title,
+		BuildLabel:  buildLabel(),
 		AuditPath:   *auditPath,
 		ExportDir:   *exportDir,
 		App:         app.New(platform.New()),
@@ -323,6 +356,7 @@ func runSAT(args []string, stdout, stderr io.Writer) int {
 	fs := flag.NewFlagSet("sat", flag.ContinueOnError)
 	fs.SetOutput(stderr)
 	duration := fs.Int("duration", 0, "stress-ng duration in seconds (cpu only; default: 60)")
+	diagLevel := fs.Int("diag-level", 0, "DCGM diagnostic level for nvidia (1=quick, 2=medium, 3=targeted stress, 4=extended stress; default: 1)")
 	if err := fs.Parse(args[1:]); err != nil {
 		if err == flag.ErrHelp {
 			return 0
@@ -337,7 +371,7 @@ func runSAT(args []string, stdout, stderr io.Writer) int {
 	target := args[0]
 	if target != "nvidia" && target != "memory" && target != "storage" && target != "cpu" {
 		fmt.Fprintf(stderr, "bee sat: unknown target %q\n", target)
-		fmt.Fprintln(stderr, "usage: bee sat nvidia|memory|storage|cpu [--duration <seconds>]")
+		fmt.Fprintln(stderr, "usage: bee sat nvidia|memory|storage|cpu [--duration <seconds>] [--diag-level <1-4>]")
 		return 2
 	}
 
@@ -346,19 +380,25 @@ func runSAT(args []string, stdout, stderr io.Writer) int {
 		archive string
 		err     error
 	)
+	logLine := func(s string) { fmt.Fprintln(os.Stderr, s) }
 	switch target {
 	case "nvidia":
-		archive, err = application.RunNvidiaAcceptancePack("")
+		level := *diagLevel
+		if level > 0 {
+			_, err = application.RunNvidiaAcceptancePackWithOptions(context.Background(), "", level, nil, logLine)
+		} else {
+			archive, err = application.RunNvidiaAcceptancePack("", logLine)
+		}
 	case "memory":
-		archive, err = application.RunMemoryAcceptancePack("")
+		archive, err = application.RunMemoryAcceptancePackCtx(context.Background(), "", logLine)
 	case "storage":
-		archive, err = application.RunStorageAcceptancePack("")
+		archive, err = application.RunStorageAcceptancePackCtx(context.Background(), "", logLine)
 	case "cpu":
 		dur := *duration
 		if dur <= 0 {
 			dur = 60
 		}
-		archive, err = application.RunCPUAcceptancePack("", dur)
+		archive, err = application.RunCPUAcceptancePackCtx(context.Background(), "", dur, logLine)
 	}
 	if err != nil {
 		slog.Error("run sat", "target", target, "err", err)

audit/go.mod

@@ -1,6 +1,6 @@
 module bee/audit
 
-go 1.24.0
+go 1.25.0
 
 replace reanimator/chart => ../internal/chart
 
@@ -13,5 +13,14 @@ require (
 	github.com/dustin/go-humanize v1.0.1 // indirect
 	github.com/go-analyze/bulk v0.1.3 // indirect
 	github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0 // indirect
+	github.com/google/uuid v1.6.0 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/ncruces/go-strftime v1.0.0 // indirect
+	github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec // indirect
 	golang.org/x/image v0.24.0 // indirect
+	golang.org/x/sys v0.42.0 // indirect
+	modernc.org/libc v1.70.0 // indirect
+	modernc.org/mathutil v1.7.1 // indirect
+	modernc.org/memory v1.11.0 // indirect
+	modernc.org/sqlite v1.48.0 // indirect
 )

audit/go.sum

@@ -8,11 +8,30 @@ github.com/go-analyze/charts v0.5.26 h1:rSwZikLQuFX6cJzwI8OAgaWZneG1kDYxD857ms00
 github.com/go-analyze/charts v0.5.26/go.mod h1:s1YvQhjiSwtLx1f2dOKfiV9x2TT49nVSL6v2rlRpTbY=
 github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0 h1:DACJavvAHhabrF08vX0COfcOBJRhZ8lUbR+ZWIs0Y5g=
 github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0/go.mod h1:E/TSTwGwJL78qG/PmXZO1EjYhfJinVAhrmmHX6Z8B9k=
+github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
+github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
+github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
+github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
+github.com/ncruces/go-strftime v1.0.0 h1:HMFp8mLCTPp341M/ZnA4qaf7ZlsbTc+miZjCLOFAw7w=
+github.com/ncruces/go-strftime v1.0.0/go.mod h1:Fwc5htZGVVkseilnfgOVb9mKy6w1naJmn9CehxcKcls=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec h1:W09IVJc94icq4NjY3clb7Lk8O1qJ8BdBEF8z0ibU0rE=
+github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec/go.mod h1:qqbHyh8v60DhA7CoWK5oRCqLrMHRGoxYCSS9EjAz6Eo=
 github.com/stretchr/testify v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu7U=
 github.com/stretchr/testify v1.11.1/go.mod h1:wZwfW3scLgRK+23gO65QZefKpKQRnfz6sD981Nm4B6U=
 golang.org/x/image v0.24.0 h1:AN7zRgVsbvmTfNyqIbbOraYL8mSwcKncEj8ofjgzcMQ=
 golang.org/x/image v0.24.0/go.mod h1:4b/ITuLfqYq1hqZcjofwctIhi7sZh2WaCjvsBNjjya8=
+golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.42.0 h1:omrd2nAlyT5ESRdCLYdm3+fMfNFE/+Rf4bDIQImRJeo=
+golang.org/x/sys v0.42.0/go.mod h1:4GL1E5IUh+htKOUEOaiffhrAeqysfVGipDYzABqnCmw=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+modernc.org/libc v1.70.0 h1:U58NawXqXbgpZ/dcdS9kMshu08aiA6b7gusEusqzNkw=
+modernc.org/libc v1.70.0/go.mod h1:OVmxFGP1CI/Z4L3E0Q3Mf1PDE0BucwMkcXjjLntvHJo=
+modernc.org/mathutil v1.7.1 h1:GCZVGXdaN8gTqB1Mf/usp1Y/hSqgI2vAGGP4jZMCxOU=
+modernc.org/mathutil v1.7.1/go.mod h1:4p5IwJITfppl0G4sUEDtCr4DthTaT47/N3aT6MhfgJg=
+modernc.org/memory v1.11.0 h1:o4QC8aMQzmcwCK3t3Ux/ZHmwFPzE6hf2Y5LbkRs+hbI=
+modernc.org/memory v1.11.0/go.mod h1:/JP4VbVC+K5sU2wZi9bHoq2MAkCnrt2r98UGeSK7Mjw=
+modernc.org/sqlite v1.48.0 h1:ElZyLop3Q2mHYk5IFPPXADejZrlHu7APbpB0sF78bq4=
+modernc.org/sqlite v1.48.0/go.mod h1:hWjRO6Tj/5Ik8ieqxQybiEOUXy0NJFNp2tpvVpKlvig=

audit/internal/app/app.go

@@ -53,6 +53,10 @@ type networkManager interface {
 	DHCPOne(iface string) (string, error)
 	DHCPAll() (string, error)
 	SetStaticIPv4(cfg platform.StaticIPv4Config) (string, error)
+	SetInterfaceState(iface string, up bool) error
+	GetInterfaceState(iface string) (bool, error)
+	CaptureNetworkSnapshot() (platform.NetworkSnapshot, error)
+	RestoreNetworkSnapshot(snapshot platform.NetworkSnapshot) error
 }
 
 type serviceManager interface {
@@ -75,20 +79,50 @@ type toolManager interface {
 type installer interface {
 	ListInstallDisks() ([]platform.InstallDisk, error)
 	InstallToDisk(ctx context.Context, device string, logFile string) error
+	IsLiveMediaInRAM() bool
+	RunInstallToRAM(ctx context.Context, logFunc func(string)) error
+}
+
+type GPUPresenceResult struct {
+	Nvidia bool
+	AMD    bool
+}
+
+func (a *App) DetectGPUPresence() GPUPresenceResult {
+	vendor := a.sat.DetectGPUVendor()
+	return GPUPresenceResult{
+		Nvidia: vendor == "nvidia",
+		AMD:    vendor == "amd",
+	}
+}
+
+func (a *App) IsLiveMediaInRAM() bool {
+	return a.installer.IsLiveMediaInRAM()
+}
+
+func (a *App) RunInstallToRAM(ctx context.Context, logFunc func(string)) error {
+	return a.installer.RunInstallToRAM(ctx, logFunc)
 }
 
 type satRunner interface {
-	RunNvidiaAcceptancePack(baseDir string) (string, error)
-	RunNvidiaAcceptancePackWithOptions(ctx context.Context, baseDir string, diagLevel int, gpuIndices []int) (string, error)
-	RunMemoryAcceptancePack(baseDir string) (string, error)
-	RunStorageAcceptancePack(baseDir string) (string, error)
-	RunCPUAcceptancePack(baseDir string, durationSec int) (string, error)
+	RunNvidiaAcceptancePack(baseDir string, logFunc func(string)) (string, error)
+	RunNvidiaAcceptancePackWithOptions(ctx context.Context, baseDir string, diagLevel int, gpuIndices []int, logFunc func(string)) (string, error)
+	RunNvidiaStressPack(ctx context.Context, baseDir string, opts platform.NvidiaStressOptions, logFunc func(string)) (string, error)
+	RunMemoryAcceptancePack(ctx context.Context, baseDir string, logFunc func(string)) (string, error)
+	RunStorageAcceptancePack(ctx context.Context, baseDir string, logFunc func(string)) (string, error)
+	RunCPUAcceptancePack(ctx context.Context, baseDir string, durationSec int, logFunc func(string)) (string, error)
 	ListNvidiaGPUs() ([]platform.NvidiaGPU, error)
 	DetectGPUVendor() string
 	ListAMDGPUs() ([]platform.AMDGPUInfo, error)
-	RunAMDAcceptancePack(baseDir string) (string, error)
+	RunAMDAcceptancePack(ctx context.Context, baseDir string, logFunc func(string)) (string, error)
+	RunAMDMemIntegrityPack(ctx context.Context, baseDir string, logFunc func(string)) (string, error)
+	RunAMDMemBandwidthPack(ctx context.Context, baseDir string, logFunc func(string)) (string, error)
+	RunAMDStressPack(ctx context.Context, baseDir string, durationSec int, logFunc func(string)) (string, error)
+	RunMemoryStressPack(ctx context.Context, baseDir string, durationSec int, logFunc func(string)) (string, error)
+	RunSATStressPack(ctx context.Context, baseDir string, durationSec int, logFunc func(string)) (string, error)
 	RunFanStressTest(ctx context.Context, baseDir string, opts platform.FanStressOptions) (string, error)
-	RunNCCLTests(ctx context.Context, baseDir string) (string, error)
+	RunPlatformStress(ctx context.Context, baseDir string, opts platform.PlatformStressOptions, logFunc func(string)) (string, error)
+	RunNCCLTests(ctx context.Context, baseDir string, logFunc func(string)) (string, error)
 }
 
 type runtimeChecker interface {
@@ -108,6 +142,17 @@ func New(platform *platform.System) *App {
 	}
 }
 
+// ApplySATOverlay parses a raw audit JSON, overlays the latest SAT results,
+// and returns the updated JSON. Used by the web UI to serve always-fresh status.
+func ApplySATOverlay(auditJSON []byte) ([]byte, error) {
+	var snap schema.HardwareIngestRequest
+	if err := json.Unmarshal(auditJSON, &snap); err != nil {
+		return nil, err
+	}
+	applyLatestSATStatuses(&snap.Hardware, DefaultSATBaseDir)
+	return json.MarshalIndent(snap, "", "  ")
+}
+
 func (a *App) RunAudit(runtimeMode runtimeenv.Mode, output string) (string, error) {
 	if runtimeMode == runtimeenv.ModeLiveCD {
 		if err := a.runtime.CaptureTechnicalDump(DefaultTechDumpDir); err != nil {
@@ -301,6 +346,22 @@ func (a *App) SetStaticIPv4(cfg platform.StaticIPv4Config) (string, error) {
 	return a.network.SetStaticIPv4(cfg)
 }
 
+func (a *App) SetInterfaceState(iface string, up bool) error {
+	return a.network.SetInterfaceState(iface, up)
+}
+
+func (a *App) GetInterfaceState(iface string) (bool, error) {
+	return a.network.GetInterfaceState(iface)
+}
+
+func (a *App) CaptureNetworkSnapshot() (platform.NetworkSnapshot, error) {
+	return a.network.CaptureNetworkSnapshot()
+}
+
+func (a *App) RestoreNetworkSnapshot(snapshot platform.NetworkSnapshot) error {
+	return a.network.RestoreNetworkSnapshot(snapshot)
+}
+
 func (a *App) SetStaticIPv4Result(cfg platform.StaticIPv4Config) (ActionResult, error) {
 	body, err := a.network.SetStaticIPv4(cfg)
 	return ActionResult{Title: "Static IPv4: " + cfg.Interface, Body: bodyOr(body, "Static IPv4 updated.")}, err
@@ -416,15 +477,15 @@ func (a *App) AuditLogTailResult() ActionResult {
 	return ActionResult{Title: "Audit log tail", Body: body}
 }
 
-func (a *App) RunNvidiaAcceptancePack(baseDir string) (string, error) {
+func (a *App) RunNvidiaAcceptancePack(baseDir string, logFunc func(string)) (string, error) {
 	if strings.TrimSpace(baseDir) == "" {
 		baseDir = DefaultSATBaseDir
 	}
-	return a.sat.RunNvidiaAcceptancePack(baseDir)
+	return a.sat.RunNvidiaAcceptancePack(baseDir, logFunc)
 }
 
 func (a *App) RunNvidiaAcceptancePackResult(baseDir string) (ActionResult, error) {
-	path, err := a.RunNvidiaAcceptancePack(baseDir)
+	path, err := a.RunNvidiaAcceptancePack(baseDir, nil)
 	body := "Archive written."
 	if path != "" {
 		body = "Archive written to " + path
@@ -436,11 +497,11 @@ func (a *App) ListNvidiaGPUs() ([]platform.NvidiaGPU, error) {
 	return a.sat.ListNvidiaGPUs()
 }
 
-func (a *App) RunNvidiaAcceptancePackWithOptions(ctx context.Context, baseDir string, diagLevel int, gpuIndices []int) (ActionResult, error) {
+func (a *App) RunNvidiaAcceptancePackWithOptions(ctx context.Context, baseDir string, diagLevel int, gpuIndices []int, logFunc func(string)) (ActionResult, error) {
 	if strings.TrimSpace(baseDir) == "" {
 		baseDir = DefaultSATBaseDir
 	}
-	path, err := a.sat.RunNvidiaAcceptancePackWithOptions(ctx, baseDir, diagLevel, gpuIndices)
+	path, err := a.sat.RunNvidiaAcceptancePackWithOptions(ctx, baseDir, diagLevel, gpuIndices, logFunc)
 	body := "Archive written."
 	if path != "" {
 		body = "Archive written to " + path
@@ -448,39 +509,62 @@ func (a *App) RunNvidiaAcceptancePackWithOptions(ctx context.Context, baseDir st
 	return ActionResult{Title: "NVIDIA DCGM", Body: body}, err
 }
 
-func (a *App) RunMemoryAcceptancePack(baseDir string) (string, error) {
+func (a *App) RunNvidiaStressPack(baseDir string, opts platform.NvidiaStressOptions, logFunc func(string)) (string, error) {
+	return a.RunNvidiaStressPackCtx(context.Background(), baseDir, opts, logFunc)
+}
+
+func (a *App) RunNvidiaStressPackCtx(ctx context.Context, baseDir string, opts platform.NvidiaStressOptions, logFunc func(string)) (string, error) {
 	if strings.TrimSpace(baseDir) == "" {
 		baseDir = DefaultSATBaseDir
 	}
-	return a.sat.RunMemoryAcceptancePack(baseDir)
+	return a.sat.RunNvidiaStressPack(ctx, baseDir, opts, logFunc)
+}
+
+func (a *App) RunMemoryAcceptancePack(baseDir string, logFunc func(string)) (string, error) {
+	return a.RunMemoryAcceptancePackCtx(context.Background(), baseDir, logFunc)
+}
+
+func (a *App) RunMemoryAcceptancePackCtx(ctx context.Context, baseDir string, logFunc func(string)) (string, error) {
+	if strings.TrimSpace(baseDir) == "" {
+		baseDir = DefaultSATBaseDir
+	}
+	return a.sat.RunMemoryAcceptancePack(ctx, baseDir, logFunc)
 }
 
 func (a *App) RunMemoryAcceptancePackResult(baseDir string) (ActionResult, error) {
-	path, err := a.RunMemoryAcceptancePack(baseDir)
+	path, err := a.RunMemoryAcceptancePack(baseDir, nil)
 	return ActionResult{Title: "Memory SAT", Body: satResultBody(path)}, err
 }
 
-func (a *App) RunCPUAcceptancePack(baseDir string, durationSec int) (string, error) {
+func (a *App) RunCPUAcceptancePack(baseDir string, durationSec int, logFunc func(string)) (string, error) {
+	return a.RunCPUAcceptancePackCtx(context.Background(), baseDir, durationSec, logFunc)
+}
+
+func (a *App) RunCPUAcceptancePackCtx(ctx context.Context, baseDir string, durationSec int, logFunc func(string)) (string, error) {
 	if strings.TrimSpace(baseDir) == "" {
 		baseDir = DefaultSATBaseDir
 	}
-	return a.sat.RunCPUAcceptancePack(baseDir, durationSec)
+	return a.sat.RunCPUAcceptancePack(ctx, baseDir, durationSec, logFunc)
 }
 
 func (a *App) RunCPUAcceptancePackResult(baseDir string, durationSec int) (ActionResult, error) {
-	path, err := a.RunCPUAcceptancePack(baseDir, durationSec)
+	path, err := a.RunCPUAcceptancePack(baseDir, durationSec, nil)
 	return ActionResult{Title: "CPU SAT", Body: satResultBody(path)}, err
 }
 
-func (a *App) RunStorageAcceptancePack(baseDir string) (string, error) {
+func (a *App) RunStorageAcceptancePack(baseDir string, logFunc func(string)) (string, error) {
+	return a.RunStorageAcceptancePackCtx(context.Background(), baseDir, logFunc)
+}
+
+func (a *App) RunStorageAcceptancePackCtx(ctx context.Context, baseDir string, logFunc func(string)) (string, error) {
 	if strings.TrimSpace(baseDir) == "" {
 		baseDir = DefaultSATBaseDir
 	}
-	return a.sat.RunStorageAcceptancePack(baseDir)
+	return a.sat.RunStorageAcceptancePack(ctx, baseDir, logFunc)
 }
 
 func (a *App) RunStorageAcceptancePackResult(baseDir string) (ActionResult, error) {
-	path, err := a.RunStorageAcceptancePack(baseDir)
+	path, err := a.RunStorageAcceptancePack(baseDir, nil)
 	return ActionResult{Title: "Storage SAT", Body: satResultBody(path)}, err
 }
 
@@ -492,18 +576,63 @@ func (a *App) ListAMDGPUs() ([]platform.AMDGPUInfo, error) {
 	return a.sat.ListAMDGPUs()
 }
 
-func (a *App) RunAMDAcceptancePack(baseDir string) (string, error) {
+func (a *App) RunAMDAcceptancePack(baseDir string, logFunc func(string)) (string, error) {
+	return a.RunAMDAcceptancePackCtx(context.Background(), baseDir, logFunc)
+}
+
+func (a *App) RunAMDAcceptancePackCtx(ctx context.Context, baseDir string, logFunc func(string)) (string, error) {
 	if strings.TrimSpace(baseDir) == "" {
 		baseDir = DefaultSATBaseDir
 	}
-	return a.sat.RunAMDAcceptancePack(baseDir)
+	return a.sat.RunAMDAcceptancePack(ctx, baseDir, logFunc)
 }
 
 func (a *App) RunAMDAcceptancePackResult(baseDir string) (ActionResult, error) {
-	path, err := a.RunAMDAcceptancePack(baseDir)
+	path, err := a.RunAMDAcceptancePack(baseDir, nil)
 	return ActionResult{Title: "AMD GPU SAT", Body: satResultBody(path)}, err
 }
 
+func (a *App) RunAMDMemIntegrityPackCtx(ctx context.Context, baseDir string, logFunc func(string)) (string, error) {
+	if strings.TrimSpace(baseDir) == "" {
+		baseDir = DefaultSATBaseDir
+	}
+	return a.sat.RunAMDMemIntegrityPack(ctx, baseDir, logFunc)
+}
+
+func (a *App) RunAMDMemBandwidthPackCtx(ctx context.Context, baseDir string, logFunc func(string)) (string, error) {
+	if strings.TrimSpace(baseDir) == "" {
+		baseDir = DefaultSATBaseDir
+	}
+	return a.sat.RunAMDMemBandwidthPack(ctx, baseDir, logFunc)
+}
+
+func (a *App) RunMemoryStressPack(baseDir string, durationSec int, logFunc func(string)) (string, error) {
+	return a.RunMemoryStressPackCtx(context.Background(), baseDir, durationSec, logFunc)
+}
+
+func (a *App) RunSATStressPack(baseDir string, durationSec int, logFunc func(string)) (string, error) {
+	return a.RunSATStressPackCtx(context.Background(), baseDir, durationSec, logFunc)
+}
+
+func (a *App) RunAMDStressPack(baseDir string, durationSec int, logFunc func(string)) (string, error) {
+	return a.RunAMDStressPackCtx(context.Background(), baseDir, durationSec, logFunc)
+}
+
+func (a *App) RunMemoryStressPackCtx(ctx context.Context, baseDir string, durationSec int, logFunc func(string)) (string, error) {
+	return a.sat.RunMemoryStressPack(ctx, baseDir, durationSec, logFunc)
+}
+
+func (a *App) RunSATStressPackCtx(ctx context.Context, baseDir string, durationSec int, logFunc func(string)) (string, error) {
+	return a.sat.RunSATStressPack(ctx, baseDir, durationSec, logFunc)
+}
+
+func (a *App) RunAMDStressPackCtx(ctx context.Context, baseDir string, durationSec int, logFunc func(string)) (string, error) {
+	if strings.TrimSpace(baseDir) == "" {
+		baseDir = DefaultSATBaseDir
+	}
+	return a.sat.RunAMDStressPack(ctx, baseDir, durationSec, logFunc)
+}
+
 func (a *App) RunFanStressTest(ctx context.Context, baseDir string, opts platform.FanStressOptions) (string, error) {
 	if strings.TrimSpace(baseDir) == "" {
 		baseDir = DefaultSATBaseDir
@@ -511,8 +640,15 @@ func (a *App) RunFanStressTest(ctx context.Context, baseDir string, opts platfor
 	return a.sat.RunFanStressTest(ctx, baseDir, opts)
 }
 
+func (a *App) RunPlatformStress(ctx context.Context, baseDir string, opts platform.PlatformStressOptions, logFunc func(string)) (string, error) {
+	if strings.TrimSpace(baseDir) == "" {
+		baseDir = DefaultSATBaseDir
+	}
+	return a.sat.RunPlatformStress(ctx, baseDir, opts, logFunc)
+}
+
 func (a *App) RunNCCLTestsResult(ctx context.Context) (ActionResult, error) {
-	path, err := a.sat.RunNCCLTests(ctx, DefaultSATBaseDir)
+	path, err := a.sat.RunNCCLTests(ctx, DefaultSATBaseDir, nil)
 	body := "Results: " + path
 	if err != nil && err != context.Canceled {
 		body += "\nERROR: " + err.Error()

audit/internal/app/app_test.go

@@ -43,6 +43,13 @@ func (f fakeNetwork) SetStaticIPv4(cfg platform.StaticIPv4Config) (string, error
 	return f.setStaticIPv4Fn(cfg)
 }
 
+func (f fakeNetwork) SetInterfaceState(_ string, _ bool) error { return nil }
+func (f fakeNetwork) GetInterfaceState(_ string) (bool, error) { return true, nil }
+func (f fakeNetwork) CaptureNetworkSnapshot() (platform.NetworkSnapshot, error) {
+	return platform.NetworkSnapshot{}, nil
+}
+func (f fakeNetwork) RestoreNetworkSnapshot(platform.NetworkSnapshot) error { return nil }
+
 type fakeServices struct {
 	serviceStatusFn func(string) (string, error)
 	serviceDoFn     func(string, platform.ServiceAction) (string, error)
@@ -113,21 +120,29 @@ func (f fakeTools) CheckTools(names []string) []platform.ToolStatus {
 }
 
 type fakeSAT struct {
-	runNvidiaFn      func(string) (string, error)
-	runMemoryFn      func(string) (string, error)
-	runStorageFn     func(string) (string, error)
-	runCPUFn         func(string, int) (string, error)
-	detectVendorFn   func() string
-	listAMDGPUsFn    func() ([]platform.AMDGPUInfo, error)
-	runAMDPackFn     func(string) (string, error)
-	listNvidiaGPUsFn func() ([]platform.NvidiaGPU, error)
+	runNvidiaFn       func(string) (string, error)
+	runNvidiaStressFn func(string, platform.NvidiaStressOptions) (string, error)
+	runMemoryFn       func(string) (string, error)
+	runStorageFn      func(string) (string, error)
+	runCPUFn          func(string, int) (string, error)
+	detectVendorFn    func() string
+	listAMDGPUsFn     func() ([]platform.AMDGPUInfo, error)
+	runAMDPackFn      func(string) (string, error)
+	listNvidiaGPUsFn  func() ([]platform.NvidiaGPU, error)
 }
 
-func (f fakeSAT) RunNvidiaAcceptancePack(baseDir string) (string, error) {
+func (f fakeSAT) RunNvidiaAcceptancePack(baseDir string, _ func(string)) (string, error) {
 	return f.runNvidiaFn(baseDir)
 }
 
-func (f fakeSAT) RunNvidiaAcceptancePackWithOptions(_ context.Context, baseDir string, _ int, _ []int) (string, error) {
+func (f fakeSAT) RunNvidiaAcceptancePackWithOptions(_ context.Context, baseDir string, _ int, _ []int, _ func(string)) (string, error) {
+	return f.runNvidiaFn(baseDir)
+}
+
+func (f fakeSAT) RunNvidiaStressPack(_ context.Context, baseDir string, opts platform.NvidiaStressOptions, _ func(string)) (string, error) {
+	if f.runNvidiaStressFn != nil {
+		return f.runNvidiaStressFn(baseDir, opts)
+	}
 	return f.runNvidiaFn(baseDir)
 }
 
@@ -138,15 +153,15 @@ func (f fakeSAT) ListNvidiaGPUs() ([]platform.NvidiaGPU, error) {
 	return nil, nil
 }
 
-func (f fakeSAT) RunMemoryAcceptancePack(baseDir string) (string, error) {
+func (f fakeSAT) RunMemoryAcceptancePack(_ context.Context, baseDir string, _ func(string)) (string, error) {
 	return f.runMemoryFn(baseDir)
 }
 
-func (f fakeSAT) RunStorageAcceptancePack(baseDir string) (string, error) {
+func (f fakeSAT) RunStorageAcceptancePack(_ context.Context, baseDir string, _ func(string)) (string, error) {
 	return f.runStorageFn(baseDir)
 }
 
-func (f fakeSAT) RunCPUAcceptancePack(baseDir string, durationSec int) (string, error) {
+func (f fakeSAT) RunCPUAcceptancePack(_ context.Context, baseDir string, durationSec int, _ func(string)) (string, error) {
 	if f.runCPUFn != nil {
 		return f.runCPUFn(baseDir, durationSec)
 	}
@@ -167,18 +182,40 @@ func (f fakeSAT) ListAMDGPUs() ([]platform.AMDGPUInfo, error) {
 	return nil, nil
 }
 
-func (f fakeSAT) RunAMDAcceptancePack(baseDir string) (string, error) {
+func (f fakeSAT) RunAMDAcceptancePack(_ context.Context, baseDir string, _ func(string)) (string, error) {
 	if f.runAMDPackFn != nil {
 		return f.runAMDPackFn(baseDir)
 	}
 	return "", nil
 }
 
+func (f fakeSAT) RunAMDMemIntegrityPack(_ context.Context, _ string, _ func(string)) (string, error) {
+	return "", nil
+}
+
+func (f fakeSAT) RunAMDMemBandwidthPack(_ context.Context, _ string, _ func(string)) (string, error) {
+	return "", nil
+}
+
+func (f fakeSAT) RunAMDStressPack(_ context.Context, _ string, _ int, _ func(string)) (string, error) {
+	return "", nil
+}
+func (f fakeSAT) RunMemoryStressPack(_ context.Context, _ string, _ int, _ func(string)) (string, error) {
+	return "", nil
+}
+func (f fakeSAT) RunSATStressPack(_ context.Context, _ string, _ int, _ func(string)) (string, error) {
+	return "", nil
+}
+
 func (f fakeSAT) RunFanStressTest(_ context.Context, _ string, _ platform.FanStressOptions) (string, error) {
 	return "", nil
 }
 
-func (f fakeSAT) RunNCCLTests(_ context.Context, _ string) (string, error) {
+func (f fakeSAT) RunPlatformStress(_ context.Context, _ string, _ platform.PlatformStressOptions, _ func(string)) (string, error) {
+	return "", nil
+}
+
+func (f fakeSAT) RunNCCLTests(_ context.Context, _ string, _ func(string)) (string, error) {
 	return "", nil
 }
 
@@ -574,13 +611,13 @@ func TestRunSATDefaultsToExportDir(t *testing.T) {
 		},
 	}
 
-	if _, err := a.RunNvidiaAcceptancePack(""); err != nil {
+	if _, err := a.RunNvidiaAcceptancePack("", nil); err != nil {
 		t.Fatal(err)
 	}
-	if _, err := a.RunMemoryAcceptancePack(""); err != nil {
+	if _, err := a.RunMemoryAcceptancePack("", nil); err != nil {
 		t.Fatal(err)
 	}
-	if _, err := a.RunStorageAcceptancePack(""); err != nil {
+	if _, err := a.RunStorageAcceptancePack("", nil); err != nil {
 		t.Fatal(err)
 	}
 }

audit/internal/app/sat_overlay.go

@@ -141,9 +141,11 @@ func satSummaryStatus(summary satSummary, label string) (string, string, bool) {
 func satKeyStatus(rawStatus, label string) (string, string, bool) {
 	switch strings.ToUpper(strings.TrimSpace(rawStatus)) {
 	case "OK":
-		return "OK", label + " passed", true
+		// No error description on success — error_description is for problems only.
+		return "OK", "", true
 	case "PARTIAL", "UNSUPPORTED", "CANCELED", "CANCELLED":
-		return "Warning", label + " incomplete", true
+		// Tool couldn't run or test was incomplete — we can't assert hardware health.
+		return "Unknown", "", true
 	case "FAILED":
 		return "Critical", label + " failed", true
 	default:
@@ -180,6 +182,8 @@ func statusSeverity(status string) int {
 		return 2
 	case "OK":
 		return 1
+	case "Unknown":
+		return 1 // same as OK — does not override OK from another source
 	default:
 		return 0
 	}

audit/internal/platform/gpu_metrics.go

@@ -76,6 +76,66 @@ func SampleGPUMetrics(gpuIndices []int) ([]GPUMetricRow, error) {
 	return sampleGPUMetrics(gpuIndices)
 }
 
+// sampleAMDGPUMetrics queries rocm-smi for live GPU metrics.
+func sampleAMDGPUMetrics() ([]GPUMetricRow, error) {
+	out, err := runROCmSMI("--showtemp", "--showuse", "--showpower", "--showmemuse", "--csv")
+	if err != nil {
+		return nil, err
+	}
+	lines := strings.Split(strings.TrimSpace(string(out)), "\n")
+	if len(lines) < 2 {
+		return nil, fmt.Errorf("rocm-smi: insufficient output")
+	}
+
+	// Parse header to find column indices by name.
+	headers := strings.Split(lines[0], ",")
+	colIdx := func(keywords ...string) int {
+		for i, h := range headers {
+			hl := strings.ToLower(strings.TrimSpace(h))
+			for _, kw := range keywords {
+				if strings.Contains(hl, kw) {
+					return i
+				}
+			}
+		}
+		return -1
+	}
+	idxTemp := colIdx("sensor edge", "temperature (c)", "temp")
+	idxUse := colIdx("gpu use (%)")
+	idxMem := colIdx("vram%", "memory allocated")
+	idxPow := colIdx("average graphics package power", "power (w)")
+
+	var rows []GPUMetricRow
+	for _, line := range lines[1:] {
+		line = strings.TrimSpace(line)
+		if line == "" {
+			continue
+		}
+		parts := strings.Split(line, ",")
+		idx := len(rows)
+		row := GPUMetricRow{GPUIndex: idx}
+		get := func(i int) float64 {
+			if i < 0 || i >= len(parts) {
+				return 0
+			}
+			v := strings.TrimSpace(parts[i])
+			if strings.EqualFold(v, "n/a") {
+				return 0
+			}
+			return parseGPUFloat(v)
+		}
+		row.TempC = get(idxTemp)
+		row.UsagePct = get(idxUse)
+		row.MemUsagePct = get(idxMem)
+		row.PowerW = get(idxPow)
+		rows = append(rows, row)
+	}
+	if len(rows) == 0 {
+		return nil, fmt.Errorf("rocm-smi: no GPU rows parsed")
+	}
+	return rows, nil
+}
+
 // WriteGPUMetricsCSV writes collected rows as a CSV file.
 func WriteGPUMetricsCSV(path string, rows []GPUMetricRow) error {
 	var b bytes.Buffer

audit/internal/platform/install_to_ram.go

@@ -0,0 +1,191 @@
+package platform
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"io"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+)
+
+func (s *System) IsLiveMediaInRAM() bool {
+	out, err := exec.Command("findmnt", "-n", "-o", "FSTYPE", "/run/live/medium").Output()
+	if err != nil {
+		return toramActive()
+	}
+	return strings.TrimSpace(string(out)) == "tmpfs"
+}
+
+func (s *System) RunInstallToRAM(ctx context.Context, logFunc func(string)) error {
+	log := func(msg string) {
+		if logFunc != nil {
+			logFunc(msg)
+		}
+	}
+
+	if s.IsLiveMediaInRAM() {
+		log("Already running from RAM — installation media can be safely disconnected.")
+		return nil
+	}
+
+	squashfsFiles, err := filepath.Glob("/run/live/medium/live/*.squashfs")
+	if err != nil || len(squashfsFiles) == 0 {
+		return fmt.Errorf("no squashfs files found in /run/live/medium/live/")
+	}
+
+	free := freeMemBytes()
+	var needed int64
+	for _, sf := range squashfsFiles {
+		fi, err2 := os.Stat(sf)
+		if err2 != nil {
+			return fmt.Errorf("stat %s: %v", sf, err2)
+		}
+		needed += fi.Size()
+	}
+	const headroom = 256 * 1024 * 1024
+	if free > 0 && needed+headroom > free {
+		return fmt.Errorf("insufficient RAM: need %s, available %s",
+			humanBytes(needed+headroom), humanBytes(free))
+	}
+
+	dstDir := "/dev/shm/bee-live"
+	if err := os.MkdirAll(dstDir, 0755); err != nil {
+		return fmt.Errorf("create tmpfs dir: %v", err)
+	}
+
+	for _, sf := range squashfsFiles {
+		if err := ctx.Err(); err != nil {
+			return err
+		}
+		base := filepath.Base(sf)
+		dst := filepath.Join(dstDir, base)
+		log(fmt.Sprintf("Copying %s to RAM...", base))
+		if err := copyFileLarge(ctx, sf, dst, log); err != nil {
+			return fmt.Errorf("copy %s: %v", base, err)
+		}
+		log(fmt.Sprintf("Copied %s.", base))
+
+		loopDev, err := findLoopForFile(sf)
+		if err != nil {
+			log(fmt.Sprintf("Loop device for %s not found (%v) — skipping re-association.", base, err))
+			continue
+		}
+		if err := reassociateLoopDevice(loopDev, dst); err != nil {
+			log(fmt.Sprintf("Warning: could not re-associate %s → %s: %v", loopDev, dst, err))
+		} else {
+			log(fmt.Sprintf("Loop device %s now backed by RAM copy.", loopDev))
+		}
+	}
+
+	log("Copying remaining medium files...")
+	if err := cpDir(ctx, "/run/live/medium", dstDir, log); err != nil {
+		log(fmt.Sprintf("Warning: partial copy: %v", err))
+	}
+	if err := ctx.Err(); err != nil {
+		return err
+	}
+	if err := exec.Command("mount", "--bind", dstDir, "/run/live/medium").Run(); err != nil {
+		log(fmt.Sprintf("Warning: rebind /run/live/medium failed: %v", err))
+	}
+
+	log("Done. Installation media can be safely disconnected.")
+	return nil
+}
+
+func copyFileLarge(ctx context.Context, src, dst string, logFunc func(string)) error {
+	in, err := os.Open(src)
+	if err != nil {
+		return err
+	}
+	defer in.Close()
+	fi, err := in.Stat()
+	if err != nil {
+		return err
+	}
+	out, err := os.Create(dst)
+	if err != nil {
+		return err
+	}
+	defer out.Close()
+	total := fi.Size()
+	var copied int64
+	buf := make([]byte, 4*1024*1024)
+	for {
+		if err := ctx.Err(); err != nil {
+			return err
+		}
+		n, err := in.Read(buf)
+		if n > 0 {
+			if _, werr := out.Write(buf[:n]); werr != nil {
+				return werr
+			}
+			copied += int64(n)
+			if logFunc != nil && total > 0 {
+				pct := int(float64(copied) / float64(total) * 100)
+				logFunc(fmt.Sprintf("  %s / %s (%d%%)", humanBytes(copied), humanBytes(total), pct))
+			}
+		}
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			return err
+		}
+	}
+	return out.Sync()
+}
+
+func cpDir(ctx context.Context, src, dst string, logFunc func(string)) error {
+	return filepath.Walk(src, func(path string, fi os.FileInfo, err error) error {
+		if ctx.Err() != nil {
+			return ctx.Err()
+		}
+		if err != nil {
+			return nil
+		}
+		rel, _ := filepath.Rel(src, path)
+		target := filepath.Join(dst, rel)
+		if fi.IsDir() {
+			return os.MkdirAll(target, fi.Mode())
+		}
+		if strings.HasSuffix(path, ".squashfs") {
+			return nil
+		}
+		if _, err := os.Stat(target); err == nil {
+			return nil
+		}
+		return copyFileLarge(ctx, path, target, nil)
+	})
+}
+
+func findLoopForFile(backingFile string) (string, error) {
+	out, err := exec.Command("losetup", "--list", "--json").Output()
+	if err != nil {
+		return "", err
+	}
+	var result struct {
+		Loopdevices []struct {
+			Name     string `json:"name"`
+			BackFile string `json:"back-file"`
+		} `json:"loopdevices"`
+	}
+	if err := json.Unmarshal(out, &result); err != nil {
+		return "", err
+	}
+	for _, dev := range result.Loopdevices {
+		if dev.BackFile == backingFile {
+			return dev.Name, nil
+		}
+	}
+	return "", fmt.Errorf("no loop device found for %s", backingFile)
+}
+
+func reassociateLoopDevice(loopDev, newFile string) error {
+	if err := exec.Command("losetup", "--replace", loopDev, newFile).Run(); err == nil {
+		return nil
+	}
+	return loopChangeFD(loopDev, newFile)
+}

audit/internal/platform/install_to_ram_linux.go

@@ -0,0 +1,28 @@
+//go:build linux
+
+package platform
+
+import (
+	"os"
+	"syscall"
+)
+
+const ioctlLoopChangeFD = 0x4C08
+
+func loopChangeFD(loopDev, newFile string) error {
+	lf, err := os.OpenFile(loopDev, os.O_RDWR, 0)
+	if err != nil {
+		return err
+	}
+	defer lf.Close()
+	nf, err := os.OpenFile(newFile, os.O_RDONLY, 0)
+	if err != nil {
+		return err
+	}
+	defer nf.Close()
+	_, _, errno := syscall.Syscall(syscall.SYS_IOCTL, lf.Fd(), ioctlLoopChangeFD, nf.Fd())
+	if errno != 0 {
+		return errno
+	}
+	return nil
+}

audit/internal/platform/install_to_ram_other.go

@@ -0,0 +1,9 @@
+//go:build !linux
+
+package platform
+
+import "errors"
+
+func loopChangeFD(loopDev, newFile string) error {
+	return errors.New("LOOP_CHANGE_FD not available on this platform")
+}

audit/internal/platform/live_metrics.go

@@ -2,7 +2,10 @@ package platform
 
 import (
 	"bufio"
+	"encoding/json"
 	"os"
+	"os/exec"
+	"sort"
 	"strconv"
 	"strings"
 	"time"
@@ -23,6 +26,7 @@ type LiveMetricSample struct {
 // TempReading is a named temperature sensor value.
 type TempReading struct {
 	Name    string  `json:"name"`
+	Group   string  `json:"group,omitempty"`
 	Celsius float64 `json:"celsius"`
 }
 
@@ -32,18 +36,22 @@ type TempReading struct {
 func SampleLiveMetrics() LiveMetricSample {
 	s := LiveMetricSample{Timestamp: time.Now().UTC()}
 
-	// GPU metrics — skipped silently if nvidia-smi unavailable
-	gpus, _ := SampleGPUMetrics(nil)
-	s.GPUs = gpus
+	// GPU metrics — try NVIDIA first, fall back to AMD
+	if gpus, err := SampleGPUMetrics(nil); err == nil && len(gpus) > 0 {
+		s.GPUs = gpus
+	} else if amdGPUs, err := sampleAMDGPUMetrics(); err == nil && len(amdGPUs) > 0 {
+		s.GPUs = amdGPUs
+	}
 
 	// Fan speeds — skipped silently if ipmitool unavailable
 	fans, _ := sampleFanSpeeds()
 	s.Fans = fans
 
-	// CPU/system temperature — returns 0 if unavailable
-	cpuTemp := sampleCPUMaxTemp()
-	if cpuTemp > 0 {
-		s.Temps = append(s.Temps, TempReading{Name: "CPU", Celsius: cpuTemp})
+	s.Temps = append(s.Temps, sampleLiveTemperatureReadings()...)
+	if !hasTempGroup(s.Temps, "cpu") {
+		if cpuTemp := sampleCPUMaxTemp(); cpuTemp > 0 {
+			s.Temps = append(s.Temps, TempReading{Name: "CPU Max", Group: "cpu", Celsius: cpuTemp})
+		}
 	}
 
 	// System power — returns 0 if unavailable
@@ -137,3 +145,182 @@ func sampleMemLoadPct() float64 {
 	used := total - avail
 	return float64(used) / float64(total) * 100
 }
+
+func hasTempGroup(temps []TempReading, group string) bool {
+	for _, t := range temps {
+		if t.Group == group {
+			return true
+		}
+	}
+	return false
+}
+
+func sampleLiveTemperatureReadings() []TempReading {
+	if temps := sampleLiveTempsViaSensorsJSON(); len(temps) > 0 {
+		return temps
+	}
+	return sampleLiveTempsViaIPMI()
+}
+
+func sampleLiveTempsViaSensorsJSON() []TempReading {
+	out, err := exec.Command("sensors", "-j").Output()
+	if err != nil || len(out) == 0 {
+		return nil
+	}
+
+	var doc map[string]map[string]any
+	if err := json.Unmarshal(out, &doc); err != nil {
+		return nil
+	}
+
+	chips := make([]string, 0, len(doc))
+	for chip := range doc {
+		chips = append(chips, chip)
+	}
+	sort.Strings(chips)
+
+	temps := make([]TempReading, 0, len(chips))
+	seen := map[string]struct{}{}
+	for _, chip := range chips {
+		features := doc[chip]
+		featureNames := make([]string, 0, len(features))
+		for name := range features {
+			featureNames = append(featureNames, name)
+		}
+		sort.Strings(featureNames)
+		for _, name := range featureNames {
+			if strings.EqualFold(name, "Adapter") {
+				continue
+			}
+			feature, ok := features[name].(map[string]any)
+			if !ok {
+				continue
+			}
+			value, ok := firstTempInputValue(feature)
+			if !ok || value <= 0 || value > 150 {
+				continue
+			}
+			group := classifyLiveTempGroup(chip, name)
+			if group == "gpu" {
+				continue
+			}
+			label := strings.TrimSpace(name)
+			if label == "" {
+				continue
+			}
+			if group == "ambient" {
+				label = compactAmbientTempName(chip, label)
+			}
+			key := group + "\x00" + label
+			if _, ok := seen[key]; ok {
+				continue
+			}
+			seen[key] = struct{}{}
+			temps = append(temps, TempReading{Name: label, Group: group, Celsius: value})
+		}
+	}
+	return temps
+}
+
+func sampleLiveTempsViaIPMI() []TempReading {
+	out, err := exec.Command("ipmitool", "sdr", "type", "Temperature").Output()
+	if err != nil || len(out) == 0 {
+		return nil
+	}
+	var temps []TempReading
+	seen := map[string]struct{}{}
+	for _, line := range strings.Split(strings.TrimSpace(string(out)), "\n") {
+		parts := strings.Split(line, "|")
+		if len(parts) < 3 {
+			continue
+		}
+		name := strings.TrimSpace(parts[0])
+		if name == "" {
+			continue
+		}
+		unit := strings.ToLower(strings.TrimSpace(parts[2]))
+		if !strings.Contains(unit, "degrees") {
+			continue
+		}
+		raw := strings.TrimSpace(parts[1])
+		if raw == "" || strings.EqualFold(raw, "na") {
+			continue
+		}
+		value, err := strconv.ParseFloat(raw, 64)
+		if err != nil || value <= 0 || value > 150 {
+			continue
+		}
+		group := classifyLiveTempGroup("", name)
+		if group == "gpu" {
+			continue
+		}
+		label := name
+		if group == "ambient" {
+			label = compactAmbientTempName("", label)
+		}
+		key := group + "\x00" + label
+		if _, ok := seen[key]; ok {
+			continue
+		}
+		seen[key] = struct{}{}
+		temps = append(temps, TempReading{Name: label, Group: group, Celsius: value})
+	}
+	return temps
+}
+
+func firstTempInputValue(feature map[string]any) (float64, bool) {
+	keys := make([]string, 0, len(feature))
+	for key := range feature {
+		keys = append(keys, key)
+	}
+	sort.Strings(keys)
+	for _, key := range keys {
+		lower := strings.ToLower(key)
+		if !strings.Contains(lower, "temp") || !strings.HasSuffix(lower, "_input") {
+			continue
+		}
+		switch value := feature[key].(type) {
+		case float64:
+			return value, true
+		case string:
+			f, err := strconv.ParseFloat(value, 64)
+			if err == nil {
+				return f, true
+			}
+		}
+	}
+	return 0, false
+}
+
+func classifyLiveTempGroup(chip, name string) string {
+	text := strings.ToLower(strings.TrimSpace(chip + " " + name))
+	switch {
+	case strings.Contains(text, "gpu"), strings.Contains(text, "amdgpu"), strings.Contains(text, "nvidia"), strings.Contains(text, "adeon"):
+		return "gpu"
+	case strings.Contains(text, "coretemp"),
+		strings.Contains(text, "k10temp"),
+		strings.Contains(text, "zenpower"),
+		strings.Contains(text, "package id"),
+		strings.Contains(text, "x86_pkg_temp"),
+		strings.Contains(text, "tctl"),
+		strings.Contains(text, "tdie"),
+		strings.Contains(text, "tccd"),
+		strings.Contains(text, "cpu"),
+		strings.Contains(text, "peci"):
+		return "cpu"
+	default:
+		return "ambient"
+	}
+}
+
+func compactAmbientTempName(chip, name string) string {
+	chip = strings.TrimSpace(chip)
+	name = strings.TrimSpace(name)
+	if chip == "" || strings.EqualFold(chip, name) {
+		return name
+	}
+	if strings.Contains(strings.ToLower(name), strings.ToLower(chip)) {
+		return name
+	}
+	return chip + " / " + name
+}

audit/internal/platform/live_metrics_test.go

@@ -0,0 +1,44 @@
+package platform
+
+import "testing"
+
+func TestFirstTempInputValue(t *testing.T) {
+	feature := map[string]any{
+		"temp1_input": 61.5,
+		"temp1_max":   80.0,
+	}
+	got, ok := firstTempInputValue(feature)
+	if !ok {
+		t.Fatal("expected value")
+	}
+	if got != 61.5 {
+		t.Fatalf("got %v want 61.5", got)
+	}
+}
+
+func TestClassifyLiveTempGroup(t *testing.T) {
+	tests := []struct {
+		chip string
+		name string
+		want string
+	}{
+		{chip: "coretemp-isa-0000", name: "Package id 0", want: "cpu"},
+		{chip: "amdgpu-pci-4300", name: "edge", want: "gpu"},
+		{chip: "nvme-pci-0100", name: "Composite", want: "ambient"},
+		{chip: "acpitz-acpi-0", name: "temp1", want: "ambient"},
+	}
+	for _, tc := range tests {
+		if got := classifyLiveTempGroup(tc.chip, tc.name); got != tc.want {
+			t.Fatalf("classifyLiveTempGroup(%q,%q)=%q want %q", tc.chip, tc.name, got, tc.want)
+		}
+	}
+}
+
+func TestCompactAmbientTempName(t *testing.T) {
+	if got := compactAmbientTempName("nvme-pci-0100", "Composite"); got != "nvme-pci-0100 / Composite" {
+		t.Fatalf("got %q", got)
+	}
+	if got := compactAmbientTempName("", "Inlet Temp"); got != "Inlet Temp" {
+		t.Fatalf("got %q", got)
+	}
+}

audit/internal/platform/network.go

@@ -2,6 +2,7 @@ package platform
 
 import (
 	"bytes"
+	"errors"
 	"fmt"
 	"os"
 	"os/exec"
@@ -18,21 +19,17 @@ func (s *System) ListInterfaces() ([]InterfaceInfo, error) {
 	out := make([]InterfaceInfo, 0, len(names))
 	for _, name := range names {
 		state := "unknown"
-		if raw, err := exec.Command("ip", "-o", "link", "show", name).Output(); err == nil {
-			fields := strings.Fields(string(raw))
-			if len(fields) >= 9 {
-				state = fields[8]
+		if up, err := interfaceAdminState(name); err == nil {
+			if up {
+				state = "up"
+			} else {
+				state = "down"
 			}
 		}
 
-		var ipv4 []string
-		if raw, err := exec.Command("ip", "-o", "-4", "addr", "show", "dev", name).Output(); err == nil {
-			for _, line := range strings.Split(strings.TrimSpace(string(raw)), "\n") {
-				fields := strings.Fields(line)
-				if len(fields) >= 4 {
-					ipv4 = append(ipv4, fields[3])
-				}
-			}
+		ipv4, err := interfaceIPv4Addrs(name)
+		if err != nil {
+			ipv4 = nil
 		}
 
 		out = append(out, InterfaceInfo{Name: name, State: state, IPv4: ipv4})
@@ -55,6 +52,119 @@ func (s *System) DefaultRoute() string {
 	return ""
 }
 
+func (s *System) CaptureNetworkSnapshot() (NetworkSnapshot, error) {
+	names, err := listInterfaceNames()
+	if err != nil {
+		return NetworkSnapshot{}, err
+	}
+
+	snapshot := NetworkSnapshot{
+		Interfaces: make([]NetworkInterfaceSnapshot, 0, len(names)),
+	}
+	for _, name := range names {
+		up, err := interfaceAdminState(name)
+		if err != nil {
+			return NetworkSnapshot{}, err
+		}
+		ipv4, err := interfaceIPv4Addrs(name)
+		if err != nil {
+			return NetworkSnapshot{}, err
+		}
+		snapshot.Interfaces = append(snapshot.Interfaces, NetworkInterfaceSnapshot{
+			Name: name,
+			Up:   up,
+			IPv4: ipv4,
+		})
+	}
+
+	if raw, err := exec.Command("ip", "route", "show", "default").Output(); err == nil {
+		for _, line := range strings.Split(strings.TrimSpace(string(raw)), "\n") {
+			line = strings.TrimSpace(line)
+			if line != "" {
+				snapshot.DefaultRoutes = append(snapshot.DefaultRoutes, line)
+			}
+		}
+	}
+
+	if raw, err := os.ReadFile("/etc/resolv.conf"); err == nil {
+		snapshot.ResolvConf = string(raw)
+	}
+
+	return snapshot, nil
+}
+
+func (s *System) RestoreNetworkSnapshot(snapshot NetworkSnapshot) error {
+	var errs []string
+
+	for _, iface := range snapshot.Interfaces {
+		if err := exec.Command("ip", "link", "set", "dev", iface.Name, "up").Run(); err != nil {
+			errs = append(errs, fmt.Sprintf("%s: bring up before restore: %v", iface.Name, err))
+			continue
+		}
+		if err := exec.Command("ip", "addr", "flush", "dev", iface.Name).Run(); err != nil {
+			errs = append(errs, fmt.Sprintf("%s: flush addresses: %v", iface.Name, err))
+		}
+		for _, cidr := range iface.IPv4 {
+			if raw, err := exec.Command("ip", "addr", "add", cidr, "dev", iface.Name).CombinedOutput(); err != nil {
+				detail := strings.TrimSpace(string(raw))
+				if detail != "" {
+					errs = append(errs, fmt.Sprintf("%s: restore address %s: %v: %s", iface.Name, cidr, err, detail))
+				} else {
+					errs = append(errs, fmt.Sprintf("%s: restore address %s: %v", iface.Name, cidr, err))
+				}
+			}
+		}
+		state := "down"
+		if iface.Up {
+			state = "up"
+		}
+		if err := exec.Command("ip", "link", "set", "dev", iface.Name, state).Run(); err != nil {
+			errs = append(errs, fmt.Sprintf("%s: restore state %s: %v", iface.Name, state, err))
+		}
+	}
+
+	if err := exec.Command("ip", "route", "del", "default").Run(); err != nil {
+		var exitErr *exec.ExitError
+		if !errors.As(err, &exitErr) {
+			errs = append(errs, fmt.Sprintf("clear default route: %v", err))
+		}
+	}
+	for _, route := range snapshot.DefaultRoutes {
+		fields := strings.Fields(route)
+		if len(fields) == 0 {
+			continue
+		}
+		// Strip state flags that ip-route(8) does not accept as add arguments.
+		filtered := fields[:0]
+		for _, f := range fields {
+			switch f {
+			case "linkdown", "dead", "onlink", "pervasive":
+				// skip
+			default:
+				filtered = append(filtered, f)
+			}
+		}
+		args := append([]string{"route", "add"}, filtered...)
+		if raw, err := exec.Command("ip", args...).CombinedOutput(); err != nil {
+			detail := strings.TrimSpace(string(raw))
+			if detail != "" {
+				errs = append(errs, fmt.Sprintf("restore route %q: %v: %s", route, err, detail))
+			} else {
+				errs = append(errs, fmt.Sprintf("restore route %q: %v", route, err))
+			}
+		}
+	}
+
+	if err := os.WriteFile("/etc/resolv.conf", []byte(snapshot.ResolvConf), 0644); err != nil {
+		errs = append(errs, fmt.Sprintf("restore resolv.conf: %v", err))
+	}
+
+	if len(errs) > 0 {
+		return errors.New(strings.Join(errs, "; "))
+	}
+	return nil
+}
+
 func (s *System) DHCPOne(iface string) (string, error) {
 	var out bytes.Buffer
 	if err := exec.Command("ip", "link", "set", iface, "up").Run(); err != nil {
@@ -131,6 +241,65 @@ func (s *System) SetStaticIPv4(cfg StaticIPv4Config) (string, error) {
 	return out.String(), nil
 }
 
+// SetInterfaceState brings a network interface up or down.
+func (s *System) SetInterfaceState(iface string, up bool) error {
+	state := "down"
+	if up {
+		state = "up"
+	}
+	return exec.Command("ip", "link", "set", "dev", iface, state).Run()
+}
+
+// GetInterfaceState returns true if the interface is UP.
+func (s *System) GetInterfaceState(iface string) (bool, error) {
+	return interfaceAdminState(iface)
+}
+
+func interfaceAdminState(iface string) (bool, error) {
+	raw, err := exec.Command("ip", "-o", "link", "show", "dev", iface).Output()
+	if err != nil {
+		return false, err
+	}
+	return parseInterfaceAdminState(string(raw))
+}
+
+func parseInterfaceAdminState(raw string) (bool, error) {
+	start := strings.IndexByte(raw, '<')
+	if start == -1 {
+		return false, fmt.Errorf("ip link output missing flags")
+	}
+	end := strings.IndexByte(raw[start+1:], '>')
+	if end == -1 {
+		return false, fmt.Errorf("ip link output missing flag terminator")
+	}
+	flags := strings.Split(raw[start+1:start+1+end], ",")
+	for _, flag := range flags {
+		if strings.TrimSpace(flag) == "UP" {
+			return true, nil
+		}
+	}
+	return false, nil
+}
+
+func interfaceIPv4Addrs(iface string) ([]string, error) {
+	raw, err := exec.Command("ip", "-o", "-4", "addr", "show", "dev", iface).Output()
+	if err != nil {
+		var exitErr *exec.ExitError
+		if errors.As(err, &exitErr) {
+			return nil, nil
+		}
+		return nil, err
+	}
+	var ipv4 []string
+	for _, line := range strings.Split(strings.TrimSpace(string(raw)), "\n") {
+		fields := strings.Fields(line)
+		if len(fields) >= 4 {
+			ipv4 = append(ipv4, fields[3])
+		}
+	}
+	return ipv4, nil
+}
+
 func listInterfaceNames() ([]string, error) {
 	raw, err := exec.Command("ip", "-o", "link", "show").Output()
 	if err != nil {

audit/internal/platform/network_test.go

@@ -0,0 +1,46 @@
+package platform
+
+import "testing"
+
+func TestParseInterfaceAdminState(t *testing.T) {
+	tests := []struct {
+		name    string
+		raw     string
+		want    bool
+		wantErr bool
+	}{
+		{
+			name: "admin up with no carrier",
+			raw:  "2: enp1s0: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN mode DEFAULT group default qlen 1000\n",
+			want: true,
+		},
+		{
+			name: "admin down",
+			raw:  "2: enp1s0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000\n",
+			want: false,
+		},
+		{
+			name:    "malformed output",
+			raw:     "2: enp1s0: mtu 1500 state DOWN\n",
+			wantErr: true,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got, err := parseInterfaceAdminState(tt.raw)
+			if tt.wantErr {
+				if err == nil {
+					t.Fatal("expected error")
+				}
+				return
+			}
+			if err != nil {
+				t.Fatalf("unexpected error: %v", err)
+			}
+			if got != tt.want {
+				t.Fatalf("got %v want %v", got, tt.want)
+			}
+		})
+	}
+}

audit/internal/platform/nvidia_stress.go

@@ -0,0 +1,205 @@
+package platform
+
+import (
+	"context"
+	"fmt"
+	"sort"
+	"strconv"
+	"strings"
+)
+
+func (s *System) RunNvidiaStressPack(ctx context.Context, baseDir string, opts NvidiaStressOptions, logFunc func(string)) (string, error) {
+	normalizeNvidiaStressOptions(&opts)
+
+	job, err := buildNvidiaStressJob(opts)
+	if err != nil {
+		return "", err
+	}
+
+	return runAcceptancePackCtx(ctx, baseDir, nvidiaStressArchivePrefix(opts.Loader), []satJob{
+		{name: "01-nvidia-smi-q.log", cmd: []string{"nvidia-smi", "-q"}},
+		{name: "02-nvidia-smi-list.log", cmd: []string{"nvidia-smi", "-L"}},
+		job,
+		{name: "04-nvidia-smi-after.log", cmd: []string{"nvidia-smi", "--query-gpu=index,name,temperature.gpu,power.draw,utilization.gpu,memory.used,memory.total", "--format=csv,noheader,nounits"}},
+	}, logFunc)
+}
+
+func nvidiaStressArchivePrefix(loader string) string {
+	switch strings.TrimSpace(strings.ToLower(loader)) {
+	case NvidiaStressLoaderJohn:
+		return "gpu-nvidia-john"
+	case NvidiaStressLoaderNCCL:
+		return "gpu-nvidia-nccl"
+	default:
+		return "gpu-nvidia-burn"
+	}
+}
+
+func buildNvidiaStressJob(opts NvidiaStressOptions) (satJob, error) {
+	selected, err := resolveNvidiaGPUSelection(opts.GPUIndices, opts.ExcludeGPUIndices)
+	if err != nil {
+		return satJob{}, err
+	}
+
+	loader := strings.TrimSpace(strings.ToLower(opts.Loader))
+	switch loader {
+	case "", NvidiaStressLoaderBuiltin:
+		cmd := []string{
+			"bee-gpu-burn",
+			"--seconds", strconv.Itoa(opts.DurationSec),
+			"--size-mb", strconv.Itoa(opts.SizeMB),
+		}
+		if len(selected) > 0 {
+			cmd = append(cmd, "--devices", joinIndexList(selected))
+		}
+		return satJob{
+			name:       "03-bee-gpu-burn.log",
+			cmd:        cmd,
+			collectGPU: true,
+			gpuIndices: selected,
+		}, nil
+	case NvidiaStressLoaderJohn:
+		cmd := []string{
+			"bee-john-gpu-stress",
+			"--seconds", strconv.Itoa(opts.DurationSec),
+		}
+		if len(selected) > 0 {
+			cmd = append(cmd, "--devices", joinIndexList(selected))
+		}
+		return satJob{
+			name:       "03-john-gpu-stress.log",
+			cmd:        cmd,
+			collectGPU: true,
+			gpuIndices: selected,
+		}, nil
+	case NvidiaStressLoaderNCCL:
+		cmd := []string{
+			"bee-nccl-gpu-stress",
+			"--seconds", strconv.Itoa(opts.DurationSec),
+		}
+		if len(selected) > 0 {
+			cmd = append(cmd, "--devices", joinIndexList(selected))
+		}
+		return satJob{
+			name:       "03-bee-nccl-gpu-stress.log",
+			cmd:        cmd,
+			collectGPU: true,
+			gpuIndices: selected,
+		}, nil
+	default:
+		return satJob{}, fmt.Errorf("unknown NVIDIA stress loader %q", opts.Loader)
+	}
+}
+
+func normalizeNvidiaStressOptions(opts *NvidiaStressOptions) {
+	if opts.DurationSec <= 0 {
+		opts.DurationSec = 300
+	}
+	if opts.SizeMB <= 0 {
+		opts.SizeMB = 64
+	}
+	switch strings.TrimSpace(strings.ToLower(opts.Loader)) {
+	case "", NvidiaStressLoaderBuiltin:
+		opts.Loader = NvidiaStressLoaderBuiltin
+	case NvidiaStressLoaderJohn:
+		opts.Loader = NvidiaStressLoaderJohn
+	case NvidiaStressLoaderNCCL:
+		opts.Loader = NvidiaStressLoaderNCCL
+	default:
+		opts.Loader = NvidiaStressLoaderBuiltin
+	}
+	opts.GPUIndices = dedupeSortedIndices(opts.GPUIndices)
+	opts.ExcludeGPUIndices = dedupeSortedIndices(opts.ExcludeGPUIndices)
+}
+
+func resolveNvidiaGPUSelection(include, exclude []int) ([]int, error) {
+	all, err := listNvidiaGPUIndices()
+	if err != nil {
+		return nil, err
+	}
+	if len(all) == 0 {
+		return nil, fmt.Errorf("nvidia-smi found no NVIDIA GPUs")
+	}
+
+	selected := all
+	if len(include) > 0 {
+		want := make(map[int]struct{}, len(include))
+		for _, idx := range include {
+			want[idx] = struct{}{}
+		}
+		selected = selected[:0]
+		for _, idx := range all {
+			if _, ok := want[idx]; ok {
+				selected = append(selected, idx)
+			}
+		}
+	}
+	if len(exclude) > 0 {
+		skip := make(map[int]struct{}, len(exclude))
+		for _, idx := range exclude {
+			skip[idx] = struct{}{}
+		}
+		filtered := selected[:0]
+		for _, idx := range selected {
+			if _, ok := skip[idx]; ok {
+				continue
+			}
+			filtered = append(filtered, idx)
+		}
+		selected = filtered
+	}
+	if len(selected) == 0 {
+		return nil, fmt.Errorf("no NVIDIA GPUs selected after applying filters")
+	}
+	out := append([]int(nil), selected...)
+	sort.Ints(out)
+	return out, nil
+}
+
+func listNvidiaGPUIndices() ([]int, error) {
+	out, err := satExecCommand("nvidia-smi", "--query-gpu=index", "--format=csv,noheader,nounits").Output()
+	if err != nil {
+		return nil, fmt.Errorf("nvidia-smi: %w", err)
+	}
+	var indices []int
+	for _, line := range strings.Split(strings.TrimSpace(string(out)), "\n") {
+		line = strings.TrimSpace(line)
+		if line == "" {
+			continue
+		}
+		idx, err := strconv.Atoi(line)
+		if err != nil {
+			continue
+		}
+		indices = append(indices, idx)
+	}
+	return dedupeSortedIndices(indices), nil
+}
+
+func dedupeSortedIndices(values []int) []int {
+	if len(values) == 0 {
+		return nil
+	}
+	seen := make(map[int]struct{}, len(values))
+	out := make([]int, 0, len(values))
+	for _, value := range values {
+		if value < 0 {
+			continue
+		}
+		if _, ok := seen[value]; ok {
+			continue
+		}
+		seen[value] = struct{}{}
+		out = append(out, value)
+	}
+	sort.Ints(out)
+	return out
+}
+
+func joinIndexList(values []int) string {
+	parts := make([]string, 0, len(values))
+	for _, value := range values {
+		parts = append(parts, strconv.Itoa(value))
+	}
+	return strings.Join(parts, ",")
+}

audit/internal/platform/platform_stress.go

@@ -0,0 +1,528 @@
+package platform
+
+import (
+	"archive/tar"
+	"bytes"
+	"compress/gzip"
+	"context"
+	"encoding/csv"
+	"fmt"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"runtime"
+	"strconv"
+	"strings"
+	"sync"
+	"syscall"
+	"time"
+)
+
+// PlatformStressCycle defines one load+idle cycle.
+type PlatformStressCycle struct {
+	LoadSec int // seconds of simultaneous CPU+GPU stress
+	IdleSec int // seconds of idle monitoring after load cut
+}
+
+// PlatformStressOptions controls the thermal cycling test.
+type PlatformStressOptions struct {
+	Cycles []PlatformStressCycle
+}
+
+// platformStressRow is one second of telemetry.
+type platformStressRow struct {
+	ElapsedSec   float64
+	Cycle        int
+	Phase        string // "load" | "idle"
+	CPULoadPct   float64
+	MaxCPUTempC  float64
+	MaxGPUTempC  float64
+	SysPowerW    float64
+	FanMinRPM    float64
+	FanMaxRPM    float64
+	GPUThrottled bool
+}
+
+// RunPlatformStress runs repeated load+idle thermal cycling.
+// Each cycle starts CPU (stressapptest) and GPU stress simultaneously,
+// runs for LoadSec, then cuts load abruptly and monitors for IdleSec.
+func (s *System) RunPlatformStress(
+	ctx context.Context,
+	baseDir string,
+	opts PlatformStressOptions,
+	logFunc func(string),
+) (string, error) {
+	if logFunc == nil {
+		logFunc = func(string) {}
+	}
+	if len(opts.Cycles) == 0 {
+		return "", fmt.Errorf("no cycles defined")
+	}
+	if err := os.MkdirAll(baseDir, 0755); err != nil {
+		return "", fmt.Errorf("mkdir %s: %w", baseDir, err)
+	}
+
+	stamp := time.Now().UTC().Format("20060102-150405")
+	runDir := filepath.Join(baseDir, "platform-stress-"+stamp)
+	if err := os.MkdirAll(runDir, 0755); err != nil {
+		return "", fmt.Errorf("mkdir run dir: %w", err)
+	}
+
+	vendor := s.DetectGPUVendor()
+	logFunc(fmt.Sprintf("Platform Thermal Cycling — %d cycle(s), GPU vendor: %s", len(opts.Cycles), vendor))
+
+	var rows []platformStressRow
+	start := time.Now()
+
+	var analyses []cycleAnalysis
+
+	for i, cycle := range opts.Cycles {
+		if ctx.Err() != nil {
+			break
+		}
+		cycleNum := i + 1
+		logFunc(fmt.Sprintf("--- Cycle %d/%d: load=%ds, idle=%ds ---", cycleNum, len(opts.Cycles), cycle.LoadSec, cycle.IdleSec))
+
+		// ── LOAD PHASE ───────────────────────────────────────────────────────
+		loadCtx, loadCancel := context.WithTimeout(ctx, time.Duration(cycle.LoadSec)*time.Second)
+		var wg sync.WaitGroup
+
+		// CPU stress
+		wg.Add(1)
+		go func() {
+			defer wg.Done()
+			cpuCmd, err := buildCPUStressCmd(loadCtx)
+			if err != nil {
+				logFunc("CPU stress: " + err.Error())
+				return
+			}
+			_ = cpuCmd.Wait() // exits when loadCtx times out (SIGKILL)
+		}()
+
+		// GPU stress
+		wg.Add(1)
+		go func() {
+			defer wg.Done()
+			gpuCmd := buildGPUStressCmd(loadCtx, vendor)
+			if gpuCmd == nil {
+				return
+			}
+			_ = gpuCmd.Wait()
+		}()
+
+		// Monitoring goroutine for load phase
+		loadRows := collectPhase(loadCtx, cycleNum, "load", start)
+		for _, r := range loadRows {
+			logFunc(formatPlatformRow(r))
+		}
+		rows = append(rows, loadRows...)
+		loadCancel()
+		wg.Wait()
+
+		if len(loadRows) > 0 {
+			logFunc(fmt.Sprintf("Cycle %d load ended (%.0fs)", cycleNum, loadRows[len(loadRows)-1].ElapsedSec))
+		}
+
+		// ── IDLE PHASE ───────────────────────────────────────────────────────
+		idleCtx, idleCancel := context.WithTimeout(ctx, time.Duration(cycle.IdleSec)*time.Second)
+		idleRows := collectPhase(idleCtx, cycleNum, "idle", start)
+		for _, r := range idleRows {
+			logFunc(formatPlatformRow(r))
+		}
+		rows = append(rows, idleRows...)
+		idleCancel()
+
+		// Per-cycle analysis
+		an := analyzePlatformCycle(loadRows, idleRows)
+		analyses = append(analyses, an)
+		logFunc(fmt.Sprintf("Cycle %d: maxCPU=%.1f°C maxGPU=%.1f°C power=%.0fW throttled=%v fanDrop=%.0f%%",
+			cycleNum, an.maxCPUTemp, an.maxGPUTemp, an.maxPower, an.throttled, an.fanDropPct))
+	}
+
+	// Write CSV
+	csvData := writePlatformCSV(rows)
+	_ = os.WriteFile(filepath.Join(runDir, "metrics.csv"), csvData, 0644)
+
+	// Write summary
+	summary := writePlatformSummary(opts, analyses)
+	logFunc("--- Summary ---")
+	for _, line := range strings.Split(summary, "\n") {
+		if line != "" {
+			logFunc(line)
+		}
+	}
+	_ = os.WriteFile(filepath.Join(runDir, "summary.txt"), []byte(summary), 0644)
+
+	// Pack tar.gz
+	archivePath := filepath.Join(baseDir, "platform-stress-"+stamp+".tar.gz")
+	if err := packPlatformDir(runDir, archivePath); err != nil {
+		return "", fmt.Errorf("pack archive: %w", err)
+	}
+	_ = os.RemoveAll(runDir)
+	return archivePath, nil
+}
+
+// collectPhase samples live metrics every second until ctx is done.
+func collectPhase(ctx context.Context, cycle int, phase string, testStart time.Time) []platformStressRow {
+	var rows []platformStressRow
+	ticker := time.NewTicker(time.Second)
+	defer ticker.Stop()
+	for {
+		select {
+		case <-ctx.Done():
+			return rows
+		case <-ticker.C:
+			sample := SampleLiveMetrics()
+			rows = append(rows, sampleToPlatformRow(sample, cycle, phase, testStart))
+		}
+	}
+}
+
+func sampleToPlatformRow(s LiveMetricSample, cycle int, phase string, testStart time.Time) platformStressRow {
+	r := platformStressRow{
+		ElapsedSec: time.Since(testStart).Seconds(),
+		Cycle:      cycle,
+		Phase:      phase,
+		CPULoadPct: s.CPULoadPct,
+		SysPowerW:  s.PowerW,
+	}
+	for _, t := range s.Temps {
+		switch t.Group {
+		case "cpu":
+			if t.Celsius > r.MaxCPUTempC {
+				r.MaxCPUTempC = t.Celsius
+			}
+		case "gpu":
+			if t.Celsius > r.MaxGPUTempC {
+				r.MaxGPUTempC = t.Celsius
+			}
+		}
+	}
+	for _, g := range s.GPUs {
+		if g.TempC > r.MaxGPUTempC {
+			r.MaxGPUTempC = g.TempC
+		}
+	}
+	if len(s.Fans) > 0 {
+		r.FanMinRPM = s.Fans[0].RPM
+		r.FanMaxRPM = s.Fans[0].RPM
+		for _, f := range s.Fans[1:] {
+			if f.RPM < r.FanMinRPM {
+				r.FanMinRPM = f.RPM
+			}
+			if f.RPM > r.FanMaxRPM {
+				r.FanMaxRPM = f.RPM
+			}
+		}
+	}
+	return r
+}
+
+func formatPlatformRow(r platformStressRow) string {
+	throttle := ""
+	if r.GPUThrottled {
+		throttle = " THROTTLE"
+	}
+	fans := ""
+	if r.FanMinRPM > 0 {
+		fans = fmt.Sprintf(" fans=%.0f-%.0fRPM", r.FanMinRPM, r.FanMaxRPM)
+	}
+	return fmt.Sprintf("[%5.0fs] cycle=%d phase=%-4s cpu=%.0f%% cpuT=%.1f°C gpuT=%.1f°C pwr=%.0fW%s%s",
+		r.ElapsedSec, r.Cycle, r.Phase, r.CPULoadPct, r.MaxCPUTempC, r.MaxGPUTempC, r.SysPowerW, fans, throttle)
+}
+
+func analyzePlatformCycle(loadRows, idleRows []platformStressRow) cycleAnalysis {
+	var an cycleAnalysis
+	for _, r := range loadRows {
+		if r.MaxCPUTempC > an.maxCPUTemp {
+			an.maxCPUTemp = r.MaxCPUTempC
+		}
+		if r.MaxGPUTempC > an.maxGPUTemp {
+			an.maxGPUTemp = r.MaxGPUTempC
+		}
+		if r.SysPowerW > an.maxPower {
+			an.maxPower = r.SysPowerW
+		}
+		if r.GPUThrottled {
+			an.throttled = true
+		}
+	}
+	// Fan RPM at cut = avg of last 5 load rows
+	if n := len(loadRows); n > 0 {
+		window := loadRows
+		if n > 5 {
+			window = loadRows[n-5:]
+		}
+		var sum float64
+		var cnt int
+		for _, r := range window {
+			if r.FanMinRPM > 0 {
+				sum += (r.FanMinRPM + r.FanMaxRPM) / 2
+				cnt++
+			}
+		}
+		if cnt > 0 {
+			an.fanAtCutAvg = sum / float64(cnt)
+		}
+	}
+	// Fan RPM min in first 15s of idle
+	an.fanMin15s = an.fanAtCutAvg
+	var cutElapsed float64
+	if len(loadRows) > 0 {
+		cutElapsed = loadRows[len(loadRows)-1].ElapsedSec
+	}
+	for _, r := range idleRows {
+		if r.ElapsedSec > cutElapsed+15 {
+			break
+		}
+		avg := (r.FanMinRPM + r.FanMaxRPM) / 2
+		if avg > 0 && (an.fanMin15s == 0 || avg < an.fanMin15s) {
+			an.fanMin15s = avg
+		}
+	}
+	if an.fanAtCutAvg > 0 {
+		an.fanDropPct = (an.fanAtCutAvg - an.fanMin15s) / an.fanAtCutAvg * 100
+	}
+	return an
+}
+
+type cycleAnalysis struct {
+	maxCPUTemp  float64
+	maxGPUTemp  float64
+	maxPower    float64
+	throttled   bool
+	fanAtCutAvg float64
+	fanMin15s   float64
+	fanDropPct  float64
+}
+
+func writePlatformSummary(opts PlatformStressOptions, analyses []cycleAnalysis) string {
+	var b strings.Builder
+	fmt.Fprintf(&b, "Platform Thermal Cycling — %d cycle(s)\n", len(opts.Cycles))
+	fmt.Fprintf(&b, "%s\n\n", strings.Repeat("=", 48))
+
+	totalThrottle := 0
+	totalFanWarn := 0
+	for i, an := range analyses {
+		cycle := opts.Cycles[i]
+		fmt.Fprintf(&b, "Cycle %d/%d (load=%ds, idle=%ds)\n", i+1, len(opts.Cycles), cycle.LoadSec, cycle.IdleSec)
+		fmt.Fprintf(&b, "  Max CPU temp: %.1f°C\n", an.maxCPUTemp)
+		fmt.Fprintf(&b, "  Max GPU temp: %.1f°C\n", an.maxGPUTemp)
+		fmt.Fprintf(&b, "  Max sys power: %.0f W\n", an.maxPower)
+		if an.throttled {
+			fmt.Fprintf(&b, "  Throttle: DETECTED\n")
+			totalThrottle++
+		} else {
+			fmt.Fprintf(&b, "  Throttle: none\n")
+		}
+		if an.fanAtCutAvg > 0 {
+			fmt.Fprintf(&b, "  Fan at load cut: %.0f RPM avg\n", an.fanAtCutAvg)
+			fmt.Fprintf(&b, "  Fan min (first 15s idle): %.0f RPM (drop %.0f%%)\n", an.fanMin15s, an.fanDropPct)
+			if an.fanDropPct > 20 {
+				fmt.Fprintf(&b, "  Fan response: WARN — fast spindown (>20%% drop in 15s)\n")
+				totalFanWarn++
+			} else {
+				fmt.Fprintf(&b, "  Fan response: OK\n")
+			}
+		}
+		b.WriteString("\n")
+	}
+
+	fmt.Fprintf(&b, "%s\n", strings.Repeat("=", 48))
+	if totalThrottle > 0 {
+		fmt.Fprintf(&b, "Overall: FAIL — throttle detected in %d/%d cycles\n", totalThrottle, len(analyses))
+	} else if totalFanWarn > 0 {
+		fmt.Fprintf(&b, "Overall: WARN — fast fan spindown in %d/%d cycles (cooling recovery risk)\n", totalFanWarn, len(analyses))
+	} else {
+		fmt.Fprintf(&b, "Overall: PASS\n")
+	}
+	return b.String()
+}
+
+func writePlatformCSV(rows []platformStressRow) []byte {
+	var buf bytes.Buffer
+	w := csv.NewWriter(&buf)
+	_ = w.Write([]string{
+		"elapsed_sec", "cycle", "phase",
+		"cpu_load_pct", "max_cpu_temp_c", "max_gpu_temp_c",
+		"sys_power_w", "fan_min_rpm", "fan_max_rpm", "gpu_throttled",
+	})
+	for _, r := range rows {
+		throttled := "0"
+		if r.GPUThrottled {
+			throttled = "1"
+		}
+		_ = w.Write([]string{
+			strconv.FormatFloat(r.ElapsedSec, 'f', 1, 64),
+			strconv.Itoa(r.Cycle),
+			r.Phase,
+			strconv.FormatFloat(r.CPULoadPct, 'f', 1, 64),
+			strconv.FormatFloat(r.MaxCPUTempC, 'f', 1, 64),
+			strconv.FormatFloat(r.MaxGPUTempC, 'f', 1, 64),
+			strconv.FormatFloat(r.SysPowerW, 'f', 1, 64),
+			strconv.FormatFloat(r.FanMinRPM, 'f', 0, 64),
+			strconv.FormatFloat(r.FanMaxRPM, 'f', 0, 64),
+			throttled,
+		})
+	}
+	w.Flush()
+	return buf.Bytes()
+}
+
+// buildCPUStressCmd creates a stressapptest command that runs until ctx is cancelled.
+func buildCPUStressCmd(ctx context.Context) (*exec.Cmd, error) {
+	path, err := satLookPath("stressapptest")
+	if err != nil {
+		return nil, fmt.Errorf("stressapptest not found: %w", err)
+	}
+	// Use a very long duration; the context timeout will kill it at the right time.
+	cmdArgs := []string{"-s", "86400", "-W", "--cc_test"}
+	if threads := platformStressCPUThreads(); threads > 0 {
+		cmdArgs = append(cmdArgs, "-m", strconv.Itoa(threads))
+	}
+	if mb := platformStressMemoryMB(); mb > 0 {
+		cmdArgs = append(cmdArgs, "-M", strconv.Itoa(mb))
+	}
+	cmd := exec.CommandContext(ctx, path, cmdArgs...)
+	cmd.Stdout = nil
+	cmd.Stderr = nil
+	if err := startLowPriorityCmd(cmd, 15); err != nil {
+		return nil, fmt.Errorf("stressapptest start: %w", err)
+	}
+	return cmd, nil
+}
+
+// buildGPUStressCmd creates a GPU stress command appropriate for the detected vendor.
+// Returns nil if no GPU stress tool is available (CPU-only cycling still useful).
+func buildGPUStressCmd(ctx context.Context, vendor string) *exec.Cmd {
+	switch strings.ToLower(vendor) {
+	case "amd":
+		return buildAMDGPUStressCmd(ctx)
+	case "nvidia":
+		return buildNvidiaGPUStressCmd(ctx)
+	}
+	return nil
+}
+
+func buildAMDGPUStressCmd(ctx context.Context) *exec.Cmd {
+	rvsArgs, err := resolveRVSCommand()
+	if err != nil {
+		return nil
+	}
+	rvsPath := rvsArgs[0]
+	cfg := `actions:
+- name: gst_platform
+  device: all
+  module: gst
+  parallel: true
+  duration: 86400000
+  copy_matrix: false
+  target_stress: 90
+  matrix_size_a: 8640
+  matrix_size_b: 8640
+  matrix_size_c: 8640
+`
+	cfgFile := "/tmp/bee-platform-gst.conf"
+	_ = os.WriteFile(cfgFile, []byte(cfg), 0644)
+	cmd := exec.CommandContext(ctx, rvsPath, "-c", cfgFile)
+	cmd.Stdout = nil
+	cmd.Stderr = nil
+	_ = startLowPriorityCmd(cmd, 10)
+	return cmd
+}
+
+func buildNvidiaGPUStressCmd(ctx context.Context) *exec.Cmd {
+	path, err := satLookPath("bee-gpu-burn")
+	if err != nil {
+		path, err = satLookPath("bee-gpu-stress")
+	}
+	if err != nil {
+		return nil
+	}
+	cmd := exec.CommandContext(ctx, path, "--seconds", "86400", "--size-mb", "64")
+	cmd.Stdout = nil
+	cmd.Stderr = nil
+	_ = startLowPriorityCmd(cmd, 10)
+	return cmd
+}
+
+func startLowPriorityCmd(cmd *exec.Cmd, nice int) error {
+	if err := cmd.Start(); err != nil {
+		return err
+	}
+	if cmd.Process != nil {
+		_ = syscall.Setpriority(syscall.PRIO_PROCESS, cmd.Process.Pid, nice)
+	}
+	return nil
+}
+
+func platformStressCPUThreads() int {
+	if n := envInt("BEE_PLATFORM_STRESS_THREADS", 0); n > 0 {
+		return n
+	}
+	cpus := runtime.NumCPU()
+	switch {
+	case cpus <= 2:
+		return 1
+	case cpus <= 8:
+		return cpus - 1
+	default:
+		return cpus - 2
+	}
+}
+
+func platformStressMemoryMB() int {
+	if mb := envInt("BEE_PLATFORM_STRESS_MB", 0); mb > 0 {
+		return mb
+	}
+	free := freeMemBytes()
+	if free <= 0 {
+		return 0
+	}
+	mb := int((free * 60) / 100 / (1024 * 1024))
+	if mb < 1024 {
+		return 1024
+	}
+	return mb
+}
+
+func packPlatformDir(dir, dest string) error {
+	f, err := os.Create(dest)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+	gz := gzip.NewWriter(f)
+	defer gz.Close()
+	tw := tar.NewWriter(gz)
+	defer tw.Close()
+
+	entries, err := os.ReadDir(dir)
+	if err != nil {
+		return err
+	}
+	base := filepath.Base(dir)
+	for _, e := range entries {
+		if e.IsDir() {
+			continue
+		}
+		fpath := filepath.Join(dir, e.Name())
+		data, err := os.ReadFile(fpath)
+		if err != nil {
+			continue
+		}
+		hdr := &tar.Header{
+			Name:    filepath.Join(base, e.Name()),
+			Size:    int64(len(data)),
+			Mode:    0644,
+			ModTime: time.Now(),
+		}
+		if err := tw.WriteHeader(hdr); err != nil {
+			return err
+		}
+		if _, err := tw.Write(data); err != nil {
+			return err
+		}
+	}
+	return nil
+}

audit/internal/platform/platform_stress_test.go

@@ -0,0 +1,34 @@
+package platform
+
+import (
+	"runtime"
+	"testing"
+)
+
+func TestPlatformStressCPUThreadsOverride(t *testing.T) {
+	t.Setenv("BEE_PLATFORM_STRESS_THREADS", "7")
+	if got := platformStressCPUThreads(); got != 7 {
+		t.Fatalf("platformStressCPUThreads=%d want 7", got)
+	}
+}
+
+func TestPlatformStressCPUThreadsDefaultLeavesHeadroom(t *testing.T) {
+	t.Setenv("BEE_PLATFORM_STRESS_THREADS", "")
+	got := platformStressCPUThreads()
+	if got < 1 {
+		t.Fatalf("platformStressCPUThreads=%d want >= 1", got)
+	}
+	if got > runtime.NumCPU() {
+		t.Fatalf("platformStressCPUThreads=%d want <= NumCPU=%d", got, runtime.NumCPU())
+	}
+	if runtime.NumCPU() > 2 && got >= runtime.NumCPU() {
+		t.Fatalf("platformStressCPUThreads=%d want headroom below NumCPU=%d", got, runtime.NumCPU())
+	}
+}
+
+func TestPlatformStressMemoryMBOverride(t *testing.T) {
+	t.Setenv("BEE_PLATFORM_STRESS_MB", "8192")
+	if got := platformStressMemoryMB(); got != 8192 {
+		t.Fatalf("platformStressMemoryMB=%d want 8192", got)
+	}
+}

audit/internal/platform/runtime.go

@@ -136,7 +136,10 @@ func (s *System) runtimeToolStatuses(vendor string) []ToolStatus {
 		tools = append(tools, s.CheckTools([]string{
 			"nvidia-smi",
 			"nvidia-bug-report.sh",
-			"bee-gpu-stress",
+			"bee-gpu-burn",
+			"bee-john-gpu-stress",
+			"bee-nccl-gpu-stress",
+			"all_reduce_perf",
 		})...)
 	case "amd":
 		tool := ToolStatus{Name: "rocm-smi"}
@@ -176,8 +179,8 @@ func (s *System) collectGPURuntimeHealth(vendor string, health *schema.RuntimeHe
 			health.DriverReady = true
 		}
 
-		if lookErr := exec.Command("sh", "-c", "command -v bee-gpu-stress >/dev/null 2>&1").Run(); lookErr == nil {
-			out, err := exec.Command("bee-gpu-stress", "--seconds", "1", "--size-mb", "1").CombinedOutput()
+		if _, lookErr := exec.LookPath("bee-gpu-burn"); lookErr == nil {
+			out, err := exec.Command("bee-gpu-burn", "--seconds", "1", "--size-mb", "1").CombinedOutput()
 			if err == nil {
 				health.CUDAReady = true
 			} else if strings.Contains(strings.ToLower(string(out)), "cuda_error_system_not_ready") {

audit/internal/platform/sat.go

@@ -2,6 +2,8 @@ package platform
 
 import (
 	"archive/tar"
+	"bufio"
+	"bytes"
 	"compress/gzip"
 	"context"
 	"errors"
@@ -13,6 +15,7 @@ import (
 	"sort"
 	"strconv"
 	"strings"
+	"sync"
 	"time"
 )
 
@@ -30,8 +33,46 @@ var (
 		"/opt/rocm/libexec/rocm_smi/rocm_smi.py",
 		"/opt/rocm-*/libexec/rocm_smi/rocm_smi.py",
 	}
+	rvsExecutableGlobs = []string{
+		"/opt/rocm/bin/rvs",
+		"/opt/rocm-*/bin/rvs",
+	}
 )
 
+// streamExecOutput runs cmd and streams each output line to logFunc (if non-nil).
+// Returns combined stdout+stderr as a byte slice.
+func streamExecOutput(cmd *exec.Cmd, logFunc func(string)) ([]byte, error) {
+	pr, pw := io.Pipe()
+	cmd.Stdout = pw
+	cmd.Stderr = pw
+
+	var buf bytes.Buffer
+	var wg sync.WaitGroup
+	wg.Add(1)
+	go func() {
+		defer wg.Done()
+		scanner := bufio.NewScanner(pr)
+		for scanner.Scan() {
+			line := scanner.Text()
+			buf.WriteString(line + "\n")
+			if logFunc != nil {
+				logFunc(line)
+			}
+		}
+	}()
+
+	err := cmd.Start()
+	if err != nil {
+		_ = pw.Close()
+		wg.Wait()
+		return nil, err
+	}
+	waitErr := cmd.Wait()
+	_ = pw.Close()
+	wg.Wait()
+	return buf.Bytes(), waitErr
+}
+
 // NvidiaGPU holds basic GPU info from nvidia-smi.
 type NvidiaGPU struct {
 	Index    int
@@ -53,6 +94,12 @@ func (s *System) DetectGPUVendor() string {
 	if _, err := os.Stat("/dev/kfd"); err == nil {
 		return "amd"
 	}
+	if raw, err := exec.Command("lspci", "-nn").Output(); err == nil {
+		text := strings.ToLower(string(raw))
+		if strings.Contains(text, "advanced micro devices") || strings.Contains(text, "amd/ati") {
+			return "amd"
+		}
+	}
 	return ""
 }
 
@@ -80,13 +127,103 @@ func (s *System) ListAMDGPUs() ([]AMDGPUInfo, error) {
 }
 
 // RunAMDAcceptancePack runs an AMD GPU diagnostic pack using rocm-smi.
-func (s *System) RunAMDAcceptancePack(baseDir string) (string, error) {
-	return runAcceptancePack(baseDir, "gpu-amd", []satJob{
+func (s *System) RunAMDAcceptancePack(ctx context.Context, baseDir string, logFunc func(string)) (string, error) {
+	return runAcceptancePackCtx(ctx, baseDir, "gpu-amd", []satJob{
 		{name: "01-rocm-smi.log", cmd: []string{"rocm-smi"}},
 		{name: "02-rocm-smi-showallinfo.log", cmd: []string{"rocm-smi", "--showallinfo"}},
 		{name: "03-dmidecode-baseboard.log", cmd: []string{"dmidecode", "-t", "baseboard"}},
 		{name: "04-dmidecode-system.log", cmd: []string{"dmidecode", "-t", "system"}},
-	})
+	}, logFunc)
+}
+
+// RunAMDMemIntegrityPack runs the official RVS MEM module as a validate-style memory integrity test.
+func (s *System) RunAMDMemIntegrityPack(ctx context.Context, baseDir string, logFunc func(string)) (string, error) {
+	if err := ensureAMDRuntimeReady(); err != nil {
+		return "", err
+	}
+	cfgFile := "/tmp/bee-amd-mem.conf"
+	cfg := `actions:
+- name: mem_integrity
+  device: all
+  module: mem
+  parallel: true
+  duration: 60000
+  copy_matrix: false
+  target_stress: 90
+  matrix_size: 8640
+`
+	_ = os.WriteFile(cfgFile, []byte(cfg), 0644)
+	return runAcceptancePackCtx(ctx, baseDir, "gpu-amd-mem", []satJob{
+		{name: "01-rocm-smi.log", cmd: []string{"rocm-smi"}},
+		{name: "02-rvs-mem.log", cmd: []string{"rvs", "-c", cfgFile}},
+		{name: "03-rocm-smi-after.log", cmd: []string{"rocm-smi", "--showtemp", "--showpower", "--showmemuse", "--csv"}},
+	}, logFunc)
+}
+
+// RunAMDMemBandwidthPack runs AMD's memory/interconnect bandwidth-oriented tools.
+func (s *System) RunAMDMemBandwidthPack(ctx context.Context, baseDir string, logFunc func(string)) (string, error) {
+	if err := ensureAMDRuntimeReady(); err != nil {
+		return "", err
+	}
+	cfgFile := "/tmp/bee-amd-babel.conf"
+	cfg := `actions:
+- name: babel_mem_bw
+  device: all
+  module: babel
+  parallel: true
+  copy_matrix: true
+  target_stress: 90
+  matrix_size: 134217728
+`
+	_ = os.WriteFile(cfgFile, []byte(cfg), 0644)
+	return runAcceptancePackCtx(ctx, baseDir, "gpu-amd-bandwidth", []satJob{
+		{name: "01-rocm-smi.log", cmd: []string{"rocm-smi"}},
+		{name: "02-rocm-bandwidth-test.log", cmd: []string{"rocm-bandwidth-test"}},
+		{name: "03-rvs-babel.log", cmd: []string{"rvs", "-c", cfgFile}},
+		{name: "04-rocm-smi-after.log", cmd: []string{"rocm-smi", "--showtemp", "--showpower", "--showmemuse", "--csv"}},
+	}, logFunc)
+}
+
+// RunAMDStressPack runs an AMD GPU burn-in pack.
+// Missing tools are reported as UNSUPPORTED, consistent with the existing SAT pattern.
+func (s *System) RunAMDStressPack(ctx context.Context, baseDir string, durationSec int, logFunc func(string)) (string, error) {
+	seconds := durationSec
+	if seconds <= 0 {
+		seconds = envInt("BEE_AMD_STRESS_SECONDS", 300)
+	}
+	if err := ensureAMDRuntimeReady(); err != nil {
+		return "", err
+	}
+	// Enable copy_matrix so the same GST run drives VRAM traffic in addition to compute.
+	rvsCfg := amdStressRVSConfig(seconds)
+	cfgFile := "/tmp/bee-amd-gst.conf"
+	_ = os.WriteFile(cfgFile, []byte(rvsCfg), 0644)
+
+	return runAcceptancePackCtx(ctx, baseDir, "gpu-amd-stress", amdStressJobs(seconds, cfgFile), logFunc)
+}
+
+func amdStressRVSConfig(seconds int) string {
+	return fmt.Sprintf(`actions:
+- name: gst_stress
+  device: all
+  module: gst
+  parallel: true
+  duration: %d
+  copy_matrix: false
+  target_stress: 90
+  matrix_size_a: 8640
+  matrix_size_b: 8640
+  matrix_size_c: 8640
+`, seconds*1000)
+}
+
+func amdStressJobs(seconds int, cfgFile string) []satJob {
+	return []satJob{
+		{name: "01-rocm-smi.log", cmd: []string{"rocm-smi"}},
+		{name: "02-rocm-bandwidth-test.log", cmd: []string{"rocm-bandwidth-test"}},
+		{name: fmt.Sprintf("03-rvs-gst-%ds.log", seconds), cmd: []string{"rvs", "-c", cfgFile}},
+		{name: fmt.Sprintf("04-rocm-smi-after.log"), cmd: []string{"rocm-smi", "--showtemp", "--showpower", "--csv"}},
+	}
 }
 
 // ListNvidiaGPUs returns GPUs visible to nvidia-smi.
@@ -123,7 +260,7 @@ func (s *System) ListNvidiaGPUs() ([]NvidiaGPU, error) {
 
 // RunNCCLTests runs nccl-tests all_reduce_perf across all NVIDIA GPUs.
 // Measures collective communication bandwidth over NVLink/PCIe.
-func (s *System) RunNCCLTests(ctx context.Context, baseDir string) (string, error) {
+func (s *System) RunNCCLTests(ctx context.Context, baseDir string, logFunc func(string)) (string, error) {
 	// detect GPU count
 	out, _ := exec.Command("nvidia-smi", "--query-gpu=index", "--format=csv,noheader").Output()
 	gpuCount := len(strings.Split(strings.TrimSpace(string(out)), "\n"))
@@ -136,44 +273,83 @@ func (s *System) RunNCCLTests(ctx context.Context, baseDir string) (string, erro
 			"all_reduce_perf", "-b", "512M", "-e", "4G", "-f", "2",
 			"-g", strconv.Itoa(gpuCount), "--iters", "20",
 		}},
-	})
+	}, logFunc)
 }
 
-func (s *System) RunNvidiaAcceptancePack(baseDir string) (string, error) {
-	return runAcceptancePack(baseDir, "gpu-nvidia", nvidiaSATJobs())
+func (s *System) RunNvidiaAcceptancePack(baseDir string, logFunc func(string)) (string, error) {
+	return runAcceptancePackCtx(context.Background(), baseDir, "gpu-nvidia", nvidiaSATJobs(), logFunc)
 }
 
 // RunNvidiaAcceptancePackWithOptions runs the NVIDIA diagnostics via DCGM.
 // diagLevel: 1=quick, 2=medium, 3=targeted stress, 4=extended stress.
 // gpuIndices: specific GPU indices to test (empty = all GPUs).
 // ctx cancellation kills the running job.
-func (s *System) RunNvidiaAcceptancePackWithOptions(ctx context.Context, baseDir string, diagLevel int, gpuIndices []int) (string, error) {
-	return runAcceptancePackCtx(ctx, baseDir, "gpu-nvidia", nvidiaDCGMJobs(diagLevel, gpuIndices))
+func (s *System) RunNvidiaAcceptancePackWithOptions(ctx context.Context, baseDir string, diagLevel int, gpuIndices []int, logFunc func(string)) (string, error) {
+	return runAcceptancePackCtx(ctx, baseDir, "gpu-nvidia", nvidiaDCGMJobs(diagLevel, gpuIndices), logFunc)
 }
 
-func (s *System) RunMemoryAcceptancePack(baseDir string) (string, error) {
+func (s *System) RunMemoryAcceptancePack(ctx context.Context, baseDir string, logFunc func(string)) (string, error) {
 	sizeMB := envInt("BEE_MEMTESTER_SIZE_MB", 128)
 	passes := envInt("BEE_MEMTESTER_PASSES", 1)
-	return runAcceptancePack(baseDir, "memory", []satJob{
+	return runAcceptancePackCtx(ctx, baseDir, "memory", []satJob{
 		{name: "01-free-before.log", cmd: []string{"free", "-h"}},
 		{name: "02-memtester.log", cmd: []string{"memtester", fmt.Sprintf("%dM", sizeMB), fmt.Sprintf("%d", passes)}},
 		{name: "03-free-after.log", cmd: []string{"free", "-h"}},
-	})
+	}, logFunc)
 }
 
-func (s *System) RunCPUAcceptancePack(baseDir string, durationSec int) (string, error) {
+func (s *System) RunMemoryStressPack(ctx context.Context, baseDir string, durationSec int, logFunc func(string)) (string, error) {
+	seconds := durationSec
+	if seconds <= 0 {
+		seconds = envInt("BEE_VM_STRESS_SECONDS", 300)
+	}
+	// Use 80% of RAM by default; override with BEE_VM_STRESS_SIZE_MB.
+	sizeArg := "80%"
+	if mb := envInt("BEE_VM_STRESS_SIZE_MB", 0); mb > 0 {
+		sizeArg = fmt.Sprintf("%dM", mb)
+	}
+	return runAcceptancePackCtx(ctx, baseDir, "memory-stress", []satJob{
+		{name: "01-free-before.log", cmd: []string{"free", "-h"}},
+		{name: "02-stress-ng-vm.log", cmd: []string{
+			"stress-ng", "--vm", "1",
+			"--vm-bytes", sizeArg,
+			"--vm-method", "all",
+			"--timeout", fmt.Sprintf("%d", seconds),
+			"--metrics-brief",
+		}},
+		{name: "03-free-after.log", cmd: []string{"free", "-h"}},
+	}, logFunc)
+}
+
+func (s *System) RunSATStressPack(ctx context.Context, baseDir string, durationSec int, logFunc func(string)) (string, error) {
+	seconds := durationSec
+	if seconds <= 0 {
+		seconds = envInt("BEE_SAT_STRESS_SECONDS", 300)
+	}
+	cmd := []string{"stressapptest", "-s", fmt.Sprintf("%d", seconds), "-W", "--cc_test"}
+	if mb := envInt("BEE_SAT_STRESS_MB", 0); mb > 0 {
+		cmd = append(cmd, "-M", fmt.Sprintf("%d", mb))
+	}
+	return runAcceptancePackCtx(ctx, baseDir, "sat-stress", []satJob{
+		{name: "01-free-before.log", cmd: []string{"free", "-h"}},
+		{name: "02-stressapptest.log", cmd: cmd},
+		{name: "03-free-after.log", cmd: []string{"free", "-h"}},
+	}, logFunc)
+}
+
+func (s *System) RunCPUAcceptancePack(ctx context.Context, baseDir string, durationSec int, logFunc func(string)) (string, error) {
 	if durationSec <= 0 {
 		durationSec = 60
 	}
-	return runAcceptancePack(baseDir, "cpu", []satJob{
+	return runAcceptancePackCtx(ctx, baseDir, "cpu", []satJob{
 		{name: "01-lscpu.log", cmd: []string{"lscpu"}},
 		{name: "02-sensors-before.log", cmd: []string{"sensors"}},
 		{name: "03-stress-ng.log", cmd: []string{"stress-ng", "--cpu", "0", "--cpu-method", "all", "--timeout", fmt.Sprintf("%d", durationSec)}},
 		{name: "04-sensors-after.log", cmd: []string{"sensors"}},
-	})
+	}, logFunc)
 }
 
-func (s *System) RunStorageAcceptancePack(baseDir string) (string, error) {
+func (s *System) RunStorageAcceptancePack(ctx context.Context, baseDir string, logFunc func(string)) (string, error) {
 	if baseDir == "" {
 		baseDir = "/var/log/bee-sat"
 	}
@@ -201,11 +377,17 @@ func (s *System) RunStorageAcceptancePack(baseDir string) (string, error) {
 	}
 
 	for index, devPath := range devices {
+		if ctx.Err() != nil {
+			break
+		}
 		prefix := fmt.Sprintf("%02d-%s", index+1, filepath.Base(devPath))
 		commands := storageSATCommands(devPath)
 		for cmdIndex, job := range commands {
+			if ctx.Err() != nil {
+				break
+			}
 			name := fmt.Sprintf("%s-%02d-%s.log", prefix, cmdIndex+1, job.name)
-			out, err := runSATCommand(verboseLog, job.name, job.cmd)
+			out, err := runSATCommandCtx(ctx, verboseLog, job.name, job.cmd, nil, logFunc)
 			if writeErr := os.WriteFile(filepath.Join(runDir, name), out, 0644); writeErr != nil {
 				return "", writeErr
 			}
@@ -243,58 +425,15 @@ type satStats struct {
 }
 
 func nvidiaSATJobs() []satJob {
-	seconds := envInt("BEE_GPU_STRESS_SECONDS", 5)
-	sizeMB := envInt("BEE_GPU_STRESS_SIZE_MB", 64)
 	return []satJob{
 		{name: "01-nvidia-smi-q.log", cmd: []string{"nvidia-smi", "-q"}},
 		{name: "02-dmidecode-baseboard.log", cmd: []string{"dmidecode", "-t", "baseboard"}},
 		{name: "03-dmidecode-system.log", cmd: []string{"dmidecode", "-t", "system"}},
 		{name: "04-nvidia-bug-report.log", cmd: []string{"nvidia-bug-report.sh", "--output-file", "{{run_dir}}/nvidia-bug-report.log"}},
-		{name: "05-bee-gpu-stress.log", cmd: []string{"bee-gpu-stress", "--seconds", fmt.Sprintf("%d", seconds), "--size-mb", fmt.Sprintf("%d", sizeMB)}},
+		{name: "05-bee-gpu-burn.log", cmd: []string{"bee-gpu-burn", "--seconds", "5", "--size-mb", "64"}},
 	}
 }
 
-func runAcceptancePack(baseDir, prefix string, jobs []satJob) (string, error) {
-	if baseDir == "" {
-		baseDir = "/var/log/bee-sat"
-	}
-	ts := time.Now().UTC().Format("20060102-150405")
-	runDir := filepath.Join(baseDir, prefix+"-"+ts)
-	if err := os.MkdirAll(runDir, 0755); err != nil {
-		return "", err
-	}
-	verboseLog := filepath.Join(runDir, "verbose.log")
-
-	var summary strings.Builder
-	stats := satStats{}
-	fmt.Fprintf(&summary, "run_at_utc=%s\n", time.Now().UTC().Format(time.RFC3339))
-	for _, job := range jobs {
-		cmd := make([]string, 0, len(job.cmd))
-		for _, arg := range job.cmd {
-			cmd = append(cmd, strings.ReplaceAll(arg, "{{run_dir}}", runDir))
-		}
-		out, err := runSATCommand(verboseLog, job.name, cmd)
-		if writeErr := os.WriteFile(filepath.Join(runDir, job.name), out, 0644); writeErr != nil {
-			return "", writeErr
-		}
-		status, rc := classifySATResult(job.name, out, err)
-		stats.Add(status)
-		key := strings.TrimSuffix(strings.TrimPrefix(job.name, "0"), ".log")
-		fmt.Fprintf(&summary, "%s_rc=%d\n", key, rc)
-		fmt.Fprintf(&summary, "%s_status=%s\n", key, status)
-	}
-	writeSATStats(&summary, stats)
-	if err := os.WriteFile(filepath.Join(runDir, "summary.txt"), []byte(summary.String()), 0644); err != nil {
-		return "", err
-	}
-
-	archive := filepath.Join(baseDir, prefix+"-"+ts+".tar.gz")
-	if err := createTarGz(archive, runDir); err != nil {
-		return "", err
-	}
-	return archive, nil
-}
-
 func nvidiaDCGMJobs(diagLevel int, gpuIndices []int) []satJob {
 	if diagLevel < 1 || diagLevel > 4 {
 		diagLevel = 3
@@ -315,7 +454,10 @@ func nvidiaDCGMJobs(diagLevel int, gpuIndices []int) []satJob {
 	}
 }
 
-func runAcceptancePackCtx(ctx context.Context, baseDir, prefix string, jobs []satJob) (string, error) {
+func runAcceptancePackCtx(ctx context.Context, baseDir, prefix string, jobs []satJob, logFunc func(string)) (string, error) {
+	if ctx == nil {
+		ctx = context.Background()
+	}
 	if baseDir == "" {
 		baseDir = "/var/log/bee-sat"
 	}
@@ -342,9 +484,9 @@ func runAcceptancePackCtx(ctx context.Context, baseDir, prefix string, jobs []sa
 		var err error
 
 		if job.collectGPU {
-			out, err = runSATCommandWithMetrics(ctx, verboseLog, job.name, cmd, job.env, job.gpuIndices, runDir)
+			out, err = runSATCommandWithMetrics(ctx, verboseLog, job.name, cmd, job.env, job.gpuIndices, runDir, logFunc)
 		} else {
-			out, err = runSATCommandCtx(ctx, verboseLog, job.name, cmd, job.env)
+			out, err = runSATCommandCtx(ctx, verboseLog, job.name, cmd, job.env, logFunc)
 		}
 
 		if writeErr := os.WriteFile(filepath.Join(runDir, job.name), out, 0644); writeErr != nil {
@@ -368,13 +510,16 @@ func runAcceptancePackCtx(ctx context.Context, baseDir, prefix string, jobs []sa
 	return archive, nil
 }
 
-func runSATCommandCtx(ctx context.Context, verboseLog, name string, cmd []string, env []string) ([]byte, error) {
+func runSATCommandCtx(ctx context.Context, verboseLog, name string, cmd []string, env []string, logFunc func(string)) ([]byte, error) {
 	start := time.Now().UTC()
 	resolvedCmd, err := resolveSATCommand(cmd)
 	appendSATVerboseLog(verboseLog,
 		fmt.Sprintf("[%s] start %s", start.Format(time.RFC3339), name),
 		"cmd: "+strings.Join(resolvedCmd, " "),
 	)
+	if logFunc != nil {
+		logFunc(fmt.Sprintf("=== %s ===", name))
+	}
 	if err != nil {
 		appendSATVerboseLog(verboseLog,
 			fmt.Sprintf("[%s] finish %s", time.Now().UTC().Format(time.RFC3339), name),
@@ -389,7 +534,7 @@ func runSATCommandCtx(ctx context.Context, verboseLog, name string, cmd []string
 	if len(env) > 0 {
 		c.Env = append(os.Environ(), env...)
 	}
-	out, err := c.CombinedOutput()
+	out, err := streamExecOutput(c, logFunc)
 
 	rc := 0
 	if err != nil {
@@ -464,6 +609,11 @@ func classifySATResult(name string, out []byte, err error) (string, int) {
 	}
 
 	text := strings.ToLower(string(out))
+	// No output at all means the tool failed to start (mlock limit, binary missing,
+	// etc.) — we cannot say anything about hardware health → UNSUPPORTED.
+	if len(strings.TrimSpace(text)) == 0 {
+		return "UNSUPPORTED", rc
+	}
 	if strings.Contains(text, "unsupported") ||
 		strings.Contains(text, "not supported") ||
 		strings.Contains(text, "invalid opcode") ||
@@ -472,19 +622,25 @@ func classifySATResult(name string, out []byte, err error) (string, int) {
 		strings.Contains(text, "not available") ||
 		strings.Contains(text, "cuda_error_system_not_ready") ||
 		strings.Contains(text, "no such device") ||
+		// nvidia-smi on a machine with no NVIDIA GPU
+		strings.Contains(text, "couldn't communicate with the nvidia driver") ||
+		strings.Contains(text, "no nvidia gpu") ||
 		(strings.Contains(name, "self-test") && strings.Contains(text, "aborted")) {
 		return "UNSUPPORTED", rc
 	}
 	return "FAILED", rc
 }
 
-func runSATCommand(verboseLog, name string, cmd []string) ([]byte, error) {
+func runSATCommand(verboseLog, name string, cmd []string, logFunc func(string)) ([]byte, error) {
 	start := time.Now().UTC()
 	resolvedCmd, err := resolveSATCommand(cmd)
 	appendSATVerboseLog(verboseLog,
 		fmt.Sprintf("[%s] start %s", start.Format(time.RFC3339), name),
 		"cmd: "+strings.Join(resolvedCmd, " "),
 	)
+	if logFunc != nil {
+		logFunc(fmt.Sprintf("=== %s ===", name))
+	}
 	if err != nil {
 		appendSATVerboseLog(verboseLog,
 			fmt.Sprintf("[%s] finish %s", time.Now().UTC().Format(time.RFC3339), name),
@@ -495,7 +651,7 @@ func runSATCommand(verboseLog, name string, cmd []string) ([]byte, error) {
 		return []byte(err.Error() + "\n"), err
 	}
 
-	out, err := satExecCommand(resolvedCmd[0], resolvedCmd[1:]...).CombinedOutput()
+	out, err := streamExecOutput(satExecCommand(resolvedCmd[0], resolvedCmd[1:]...), logFunc)
 
 	rc := 0
 	if err != nil {
@@ -522,10 +678,27 @@ func resolveSATCommand(cmd []string) ([]string, error) {
 	if len(cmd) == 0 {
 		return nil, errors.New("empty SAT command")
 	}
-	if cmd[0] != "rocm-smi" {
-		return cmd, nil
+	switch cmd[0] {
+	case "rocm-smi":
+		return resolveROCmSMICommand(cmd[1:]...)
+	case "rvs":
+		return resolveRVSCommand(cmd[1:]...)
 	}
-	return resolveROCmSMICommand(cmd[1:]...)
+	path, err := satLookPath(cmd[0])
+	if err != nil {
+		return nil, fmt.Errorf("%s not found in PATH: %w", cmd[0], err)
+	}
+	return append([]string{path}, cmd[1:]...), nil
+}
+
+func resolveRVSCommand(args ...string) ([]string, error) {
+	if path, err := satLookPath("rvs"); err == nil {
+		return append([]string{path}, args...), nil
+	}
+	for _, path := range expandExistingPaths(rvsExecutableGlobs) {
+		return append([]string{path}, args...), nil
+	}
+	return nil, errors.New("rvs not found in PATH or under /opt/rocm")
 }
 
 func resolveROCmSMICommand(args ...string) ([]string, error) {
@@ -549,6 +722,20 @@ func resolveROCmSMICommand(args ...string) ([]string, error) {
 	return nil, errors.New("rocm-smi not found in PATH or under /opt/rocm")
 }
 
+func ensureAMDRuntimeReady() error {
+	if _, err := os.Stat("/dev/kfd"); err == nil {
+		return nil
+	}
+	if raw, err := os.ReadFile("/sys/module/amdgpu/initstate"); err == nil {
+		state := strings.TrimSpace(string(raw))
+		if strings.EqualFold(state, "live") {
+			return nil
+		}
+		return fmt.Errorf("AMD driver is present but not initialized: amdgpu initstate=%q", state)
+	}
+	return errors.New("AMD GPUs are present but the runtime is not initialized: /dev/kfd is missing and amdgpu is not loaded")
+}
+
 func rocmSMIExecutableCandidates() []string {
 	return expandExistingPaths(rocmSMIExecutableGlobs)
 }
@@ -597,7 +784,7 @@ func parseStorageDevices(raw string) []string {
 
 // runSATCommandWithMetrics runs a command while collecting GPU metrics in the background.
 // On completion it writes gpu-metrics.csv and gpu-metrics.html into runDir.
-func runSATCommandWithMetrics(ctx context.Context, verboseLog, name string, cmd []string, env []string, gpuIndices []int, runDir string) ([]byte, error) {
+func runSATCommandWithMetrics(ctx context.Context, verboseLog, name string, cmd []string, env []string, gpuIndices []int, runDir string, logFunc func(string)) ([]byte, error) {
 	stopCh := make(chan struct{})
 	doneCh := make(chan struct{})
 	var metricRows []GPUMetricRow
@@ -625,7 +812,7 @@ func runSATCommandWithMetrics(ctx context.Context, verboseLog, name string, cmd
 		}
 	}()
 
-	out, err := runSATCommandCtx(ctx, verboseLog, name, cmd, env)
+	out, err := runSATCommandCtx(ctx, verboseLog, name, cmd, env, logFunc)
 
 	close(stopCh)
 	<-doneCh

audit/internal/platform/sat_fan_stress.go

@@ -2,10 +2,12 @@ package platform
 
 import (
 	"context"
+	"encoding/json"
 	"fmt"
 	"os"
 	"os/exec"
 	"path/filepath"
+	"sort"
 	"strconv"
 	"strings"
 	"sync"
@@ -128,26 +130,21 @@ func (s *System) RunFanStressTest(ctx context.Context, baseDir string, opts FanS
 		stats.OK++
 	}
 
-	// loadPhase runs bee-gpu-stress for durSec; sampler stamps phaseName on each row.
+	// loadPhase runs bee-gpu-burn for durSec; sampler stamps phaseName on each row.
 	loadPhase := func(phaseName, stepName string, durSec int) {
 		if ctx.Err() != nil {
 			return
 		}
 		setPhase(phaseName)
-		var env []string
-		if len(opts.GPUIndices) > 0 {
-			ids := make([]string, len(opts.GPUIndices))
-			for i, idx := range opts.GPUIndices {
-				ids[i] = strconv.Itoa(idx)
-			}
-			env = []string{"CUDA_VISIBLE_DEVICES=" + strings.Join(ids, ",")}
-		}
 		cmd := []string{
-			"bee-gpu-stress",
+			"bee-gpu-burn",
 			"--seconds", strconv.Itoa(durSec),
 			"--size-mb", strconv.Itoa(opts.SizeMB),
 		}
-		out, err := runSATCommandCtx(ctx, verboseLog, stepName, cmd, env)
+		if len(opts.GPUIndices) > 0 {
+			cmd = append(cmd, "--devices", joinIndexList(dedupeSortedIndices(opts.GPUIndices)))
+		}
+		out, err := runSATCommandCtx(ctx, verboseLog, stepName, cmd, nil, nil)
 		_ = os.WriteFile(filepath.Join(runDir, stepName+".log"), out, 0644)
 		if err != nil && err != context.Canceled && err.Error() != "signal: killed" {
 			fmt.Fprintf(&summary, "%s_status=FAILED\n", stepName)
@@ -304,41 +301,148 @@ func sampleGPUStressMetrics(gpuIndices []int) []GPUStressMetric {
 // sampleFanSpeeds reads fan RPM values from ipmitool sdr.
 func sampleFanSpeeds() ([]FanReading, error) {
 	out, err := exec.Command("ipmitool", "sdr", "type", "Fan").Output()
+	if err == nil {
+		if fans := parseFanSpeeds(string(out)); len(fans) > 0 {
+			return fans, nil
+		}
+	}
+	fans, sensorsErr := sampleFanSpeedsViaSensorsJSON()
+	if len(fans) > 0 {
+		return fans, nil
+	}
 	if err != nil {
 		return nil, err
 	}
-	return parseFanSpeeds(string(out)), nil
+	return nil, sensorsErr
 }
 
 // parseFanSpeeds parses "ipmitool sdr type Fan" output.
-// Line format: "FAN1             | 2400.000   | RPM        | ok"
+// Handles two formats:
+//
+//	Old: "FAN1 | 2400.000 | RPM | ok"           (value in col[1], unit in col[2])
+//	New: "FAN1 | 41h | ok | 29.1 | 4340 RPM"   (value+unit combined in last col)
 func parseFanSpeeds(raw string) []FanReading {
 	var fans []FanReading
 	for _, line := range strings.Split(strings.TrimSpace(raw), "\n") {
 		parts := strings.Split(line, "|")
-		if len(parts) < 3 {
+		if len(parts) < 2 {
 			continue
 		}
-		unit := strings.TrimSpace(parts[2])
-		if !strings.EqualFold(unit, "RPM") {
+		name := strings.TrimSpace(parts[0])
+		// Find the first field that contains "RPM" (either as a standalone unit or inline)
+		rpmVal := 0.0
+		found := false
+		for _, p := range parts[1:] {
+			p = strings.TrimSpace(p)
+			if !strings.Contains(strings.ToUpper(p), "RPM") {
+				continue
+			}
+			if strings.EqualFold(p, "RPM") {
+				continue // unit-only column in old format; value is in previous field
+			}
+			val, err := parseFanRPMValue(p)
+			if err == nil {
+				rpmVal = val
+				found = true
+				break
+			}
+		}
+		// Old format: unit "RPM" is in col[2], value is in col[1]
+		if !found && len(parts) >= 3 && strings.EqualFold(strings.TrimSpace(parts[2]), "RPM") {
+			valStr := strings.TrimSpace(parts[1])
+			if !strings.EqualFold(valStr, "na") && !strings.EqualFold(valStr, "disabled") && valStr != "" {
+				if val, err := parseFanRPMValue(valStr); err == nil {
+					rpmVal = val
+					found = true
+				}
+			}
+		}
+		if !found {
 			continue
 		}
-		valStr := strings.TrimSpace(parts[1])
-		if strings.EqualFold(valStr, "na") || strings.EqualFold(valStr, "disabled") || valStr == "" {
-			continue
-		}
-		val, err := strconv.ParseFloat(valStr, 64)
-		if err != nil {
-			continue
-		}
-		fans = append(fans, FanReading{
-			Name: strings.TrimSpace(parts[0]),
-			RPM:  val,
-		})
+		fans = append(fans, FanReading{Name: name, RPM: rpmVal})
 	}
 	return fans
 }
 
+func parseFanRPMValue(raw string) (float64, error) {
+	fields := strings.Fields(strings.TrimSpace(strings.ReplaceAll(raw, ",", "")))
+	if len(fields) == 0 {
+		return 0, strconv.ErrSyntax
+	}
+	return strconv.ParseFloat(fields[0], 64)
+}
+
+func sampleFanSpeedsViaSensorsJSON() ([]FanReading, error) {
+	out, err := exec.Command("sensors", "-j").Output()
+	if err != nil || len(out) == 0 {
+		return nil, err
+	}
+	var doc map[string]map[string]any
+	if err := json.Unmarshal(out, &doc); err != nil {
+		return nil, err
+	}
+	chips := make([]string, 0, len(doc))
+	for chip := range doc {
+		chips = append(chips, chip)
+	}
+	sort.Strings(chips)
+	var fans []FanReading
+	seen := map[string]struct{}{}
+	for _, chip := range chips {
+		features := doc[chip]
+		names := make([]string, 0, len(features))
+		for name := range features {
+			names = append(names, name)
+		}
+		sort.Strings(names)
+		for _, name := range names {
+			feature, ok := features[name].(map[string]any)
+			if !ok {
+				continue
+			}
+			rpm, ok := firstFanInputValue(feature)
+			if !ok || rpm <= 0 {
+				continue
+			}
+			label := strings.TrimSpace(name)
+			if chip != "" && !strings.Contains(strings.ToLower(label), strings.ToLower(chip)) {
+				label = chip + " / " + label
+			}
+			if _, ok := seen[label]; ok {
+				continue
+			}
+			seen[label] = struct{}{}
+			fans = append(fans, FanReading{Name: label, RPM: rpm})
+		}
+	}
+	return fans, nil
+}
+
+func firstFanInputValue(feature map[string]any) (float64, bool) {
+	keys := make([]string, 0, len(feature))
+	for key := range feature {
+		keys = append(keys, key)
+	}
+	sort.Strings(keys)
+	for _, key := range keys {
+		lower := strings.ToLower(key)
+		if !strings.Contains(lower, "fan") || !strings.HasSuffix(lower, "_input") {
+			continue
+		}
+		switch value := feature[key].(type) {
+		case float64:
+			return value, true
+		case string:
+			f, err := strconv.ParseFloat(value, 64)
+			if err == nil {
+				return f, true
+			}
+		}
+	}
+	return 0, false
+}
+
 // sampleCPUMaxTemp returns the highest CPU/inlet temperature from ipmitool or sensors.
 func sampleCPUMaxTemp() float64 {
 	out, err := exec.Command("ipmitool", "sdr", "type", "Temperature").Output()

audit/internal/platform/sat_fan_stress_test.go

@@ -0,0 +1,27 @@
+package platform
+
+import "testing"
+
+func TestParseFanSpeeds(t *testing.T) {
+	raw := "FAN1 | 2400.000 | RPM | ok\nFAN2 | 1800 RPM | ok | ok\nFAN3 | na | RPM | ns\n"
+	got := parseFanSpeeds(raw)
+	if len(got) != 2 {
+		t.Fatalf("fans=%d want 2 (%v)", len(got), got)
+	}
+	if got[0].Name != "FAN1" || got[0].RPM != 2400 {
+		t.Fatalf("fan0=%+v", got[0])
+	}
+	if got[1].Name != "FAN2" || got[1].RPM != 1800 {
+		t.Fatalf("fan1=%+v", got[1])
+	}
+}
+
+func TestFirstFanInputValue(t *testing.T) {
+	feature := map[string]any{
+		"fan1_input": 9200.0,
+	}
+	got, ok := firstFanInputValue(feature)
+	if !ok || got != 9200 {
+		t.Fatalf("got=%v ok=%v", got, ok)
+	}
+}

audit/internal/platform/sat_test.go

@@ -5,6 +5,7 @@ import (
 	"os"
 	"os/exec"
 	"path/filepath"
+	"strings"
 	"testing"
 )
 
@@ -30,21 +31,59 @@ func TestRunNvidiaAcceptancePackIncludesGPUStress(t *testing.T) {
 	if len(jobs) != 5 {
 		t.Fatalf("jobs=%d want 5", len(jobs))
 	}
-	if got := jobs[4].cmd[0]; got != "bee-gpu-stress" {
-		t.Fatalf("gpu stress command=%q want bee-gpu-stress", got)
+	if got := jobs[4].cmd[0]; got != "bee-gpu-burn" {
+		t.Fatalf("gpu stress command=%q want bee-gpu-burn", got)
 	}
 	if got := jobs[3].cmd[1]; got != "--output-file" {
 		t.Fatalf("bug report flag=%q want --output-file", got)
 	}
 }
 
-func TestNvidiaSATJobsUseEnvOverrides(t *testing.T) {
-	t.Setenv("BEE_GPU_STRESS_SECONDS", "9")
-	t.Setenv("BEE_GPU_STRESS_SIZE_MB", "96")
+func TestAMDStressConfigUsesSingleGSTAction(t *testing.T) {
+	t.Parallel()
 
+	cfg := amdStressRVSConfig(123)
+	if !strings.Contains(cfg, "module: gst") {
+		t.Fatalf("config missing gst module:\n%s", cfg)
+	}
+	if strings.Contains(cfg, "module: mem") {
+		t.Fatalf("config should not include mem module:\n%s", cfg)
+	}
+	if !strings.Contains(cfg, "copy_matrix: false") {
+		t.Fatalf("config should use copy_matrix=false:\n%s", cfg)
+	}
+	if strings.Count(cfg, "duration: 123000") != 1 {
+		t.Fatalf("config should apply duration once:\n%s", cfg)
+	}
+	for _, field := range []string{"matrix_size_a: 8640", "matrix_size_b: 8640", "matrix_size_c: 8640"} {
+		if !strings.Contains(cfg, field) {
+			t.Fatalf("config missing %s:\n%s", field, cfg)
+		}
+	}
+}
+
+func TestAMDStressJobsIncludeBandwidthAndGST(t *testing.T) {
+	t.Parallel()
+
+	jobs := amdStressJobs(300, "/tmp/test-amd-gst.conf")
+	if len(jobs) != 4 {
+		t.Fatalf("jobs=%d want 4", len(jobs))
+	}
+	if got := jobs[1].cmd[0]; got != "rocm-bandwidth-test" {
+		t.Fatalf("jobs[1]=%q want rocm-bandwidth-test", got)
+	}
+	if got := jobs[2].cmd[0]; got != "rvs" {
+		t.Fatalf("jobs[2]=%q want rvs", got)
+	}
+	if got := jobs[2].cmd[2]; got != "/tmp/test-amd-gst.conf" {
+		t.Fatalf("jobs[2] cfg=%q want /tmp/test-amd-gst.conf", got)
+	}
+}
+
+func TestNvidiaSATJobsUseBuiltinBurnDefaults(t *testing.T) {
 	jobs := nvidiaSATJobs()
 	got := jobs[4].cmd
-	want := []string{"bee-gpu-stress", "--seconds", "9", "--size-mb", "96"}
+	want := []string{"bee-gpu-burn", "--seconds", "5", "--size-mb", "64"}
 	if len(got) != len(want) {
 		t.Fatalf("cmd len=%d want %d", len(got), len(want))
 	}
@@ -55,6 +94,93 @@ func TestNvidiaSATJobsUseEnvOverrides(t *testing.T) {
 	}
 }
 
+func TestBuildNvidiaStressJobUsesSelectedLoaderAndDevices(t *testing.T) {
+	t.Parallel()
+
+	oldExecCommand := satExecCommand
+	satExecCommand = func(name string, args ...string) *exec.Cmd {
+		if name == "nvidia-smi" {
+			return exec.Command("sh", "-c", "printf '0\n1\n2\n'")
+		}
+		return exec.Command(name, args...)
+	}
+	t.Cleanup(func() { satExecCommand = oldExecCommand })
+
+	job, err := buildNvidiaStressJob(NvidiaStressOptions{
+		DurationSec:       600,
+		Loader:            NvidiaStressLoaderJohn,
+		ExcludeGPUIndices: []int{1},
+	})
+	if err != nil {
+		t.Fatalf("buildNvidiaStressJob error: %v", err)
+	}
+	wantCmd := []string{"bee-john-gpu-stress", "--seconds", "600", "--devices", "0,2"}
+	if len(job.cmd) != len(wantCmd) {
+		t.Fatalf("cmd len=%d want %d (%v)", len(job.cmd), len(wantCmd), job.cmd)
+	}
+	for i := range wantCmd {
+		if job.cmd[i] != wantCmd[i] {
+			t.Fatalf("cmd[%d]=%q want %q", i, job.cmd[i], wantCmd[i])
+		}
+	}
+	if got := joinIndexList(job.gpuIndices); got != "0,2" {
+		t.Fatalf("gpuIndices=%q want 0,2", got)
+	}
+}
+
+func TestBuildNvidiaStressJobUsesNCCLLoader(t *testing.T) {
+	t.Parallel()
+
+	oldExecCommand := satExecCommand
+	satExecCommand = func(name string, args ...string) *exec.Cmd {
+		if name == "nvidia-smi" {
+			return exec.Command("sh", "-c", "printf '0\n1\n2\n'")
+		}
+		return exec.Command(name, args...)
+	}
+	t.Cleanup(func() { satExecCommand = oldExecCommand })
+
+	job, err := buildNvidiaStressJob(NvidiaStressOptions{
+		DurationSec: 120,
+		Loader:      NvidiaStressLoaderNCCL,
+		GPUIndices:  []int{2, 0},
+	})
+	if err != nil {
+		t.Fatalf("buildNvidiaStressJob error: %v", err)
+	}
+	wantCmd := []string{"bee-nccl-gpu-stress", "--seconds", "120", "--devices", "0,2"}
+	if len(job.cmd) != len(wantCmd) {
+		t.Fatalf("cmd len=%d want %d (%v)", len(job.cmd), len(wantCmd), job.cmd)
+	}
+	for i := range wantCmd {
+		if job.cmd[i] != wantCmd[i] {
+			t.Fatalf("cmd[%d]=%q want %q", i, job.cmd[i], wantCmd[i])
+		}
+	}
+	if got := joinIndexList(job.gpuIndices); got != "0,2" {
+		t.Fatalf("gpuIndices=%q want 0,2", got)
+	}
+}
+
+func TestNvidiaStressArchivePrefixByLoader(t *testing.T) {
+	t.Parallel()
+
+	tests := []struct {
+		loader string
+		want   string
+	}{
+		{loader: NvidiaStressLoaderBuiltin, want: "gpu-nvidia-burn"},
+		{loader: NvidiaStressLoaderJohn, want: "gpu-nvidia-john"},
+		{loader: NvidiaStressLoaderNCCL, want: "gpu-nvidia-nccl"},
+		{loader: "", want: "gpu-nvidia-burn"},
+	}
+	for _, tt := range tests {
+		if got := nvidiaStressArchivePrefix(tt.loader); got != tt.want {
+			t.Fatalf("loader=%q prefix=%q want %q", tt.loader, got, tt.want)
+		}
+	}
+}
+
 func TestEnvIntFallback(t *testing.T) {
 	os.Unsetenv("BEE_MEMTESTER_SIZE_MB")
 	if got := envInt("BEE_MEMTESTER_SIZE_MB", 123); got != 123 {
@@ -80,8 +206,8 @@ func TestClassifySATResult(t *testing.T) {
 	}{
 		{name: "ok", job: "memtester", out: "done", err: nil, status: "OK"},
 		{name: "unsupported", job: "smartctl-self-test-short", out: "Self-test not supported", err: errors.New("rc 1"), status: "UNSUPPORTED"},
-		{name: "failed", job: "bee-gpu-stress", out: "cuda error", err: errors.New("rc 1"), status: "FAILED"},
-		{name: "cuda not ready", job: "bee-gpu-stress", out: "cuInit failed: CUDA_ERROR_SYSTEM_NOT_READY", err: errors.New("rc 1"), status: "UNSUPPORTED"},
+		{name: "failed", job: "bee-gpu-burn", out: "cuda error", err: errors.New("rc 1"), status: "FAILED"},
+		{name: "cuda not ready", job: "bee-gpu-burn", out: "cuInit failed: CUDA_ERROR_SYSTEM_NOT_READY", err: errors.New("rc 1"), status: "UNSUPPORTED"},
 	}
 
 	for _, tt := range tests {
@@ -130,6 +256,44 @@ func TestResolveROCmSMICommandFromPATH(t *testing.T) {
 	}
 }
 
+func TestResolveSATCommandUsesLookPathForGenericTools(t *testing.T) {
+	oldLookPath := satLookPath
+	satLookPath = func(file string) (string, error) {
+		if file == "stress-ng" {
+			return "/usr/bin/stress-ng", nil
+		}
+		return "", exec.ErrNotFound
+	}
+	t.Cleanup(func() { satLookPath = oldLookPath })
+
+	cmd, err := resolveSATCommand([]string{"stress-ng", "--cpu", "0"})
+	if err != nil {
+		t.Fatalf("resolveSATCommand error: %v", err)
+	}
+	if len(cmd) != 3 {
+		t.Fatalf("cmd len=%d want 3 (%v)", len(cmd), cmd)
+	}
+	if cmd[0] != "/usr/bin/stress-ng" {
+		t.Fatalf("cmd[0]=%q want /usr/bin/stress-ng", cmd[0])
+	}
+}
+
+func TestResolveSATCommandFailsForMissingGenericTool(t *testing.T) {
+	oldLookPath := satLookPath
+	satLookPath = func(file string) (string, error) {
+		return "", exec.ErrNotFound
+	}
+	t.Cleanup(func() { satLookPath = oldLookPath })
+
+	_, err := resolveSATCommand([]string{"stress-ng", "--cpu", "0"})
+	if err == nil {
+		t.Fatal("expected error")
+	}
+	if !strings.Contains(err.Error(), "stress-ng not found in PATH") {
+		t.Fatalf("error=%q", err)
+	}
+}
+
 func TestResolveROCmSMICommandFallsBackToROCmTree(t *testing.T) {
 	tmp := t.TempDir()
 	execPath := filepath.Join(tmp, "opt", "rocm", "bin", "rocm-smi")

audit/internal/platform/services.go

@@ -17,6 +17,10 @@ func (s *System) ListBeeServices() ([]string, error) {
 		}
 		for _, match := range matches {
 			name := strings.TrimSuffix(filepath.Base(match), ".service")
+			// Skip template units (e.g. bee-journal-mirror@) — they have no instances to query.
+			if strings.HasSuffix(name, "@") {
+				continue
+			}
 			if !seen[name] {
 				seen[name] = true
 				out = append(out, name)

audit/internal/platform/types.go

@@ -8,6 +8,18 @@ type InterfaceInfo struct {
 	IPv4  []string
 }
 
+type NetworkInterfaceSnapshot struct {
+	Name string
+	Up   bool
+	IPv4 []string
+}
+
+type NetworkSnapshot struct {
+	Interfaces    []NetworkInterfaceSnapshot
+	DefaultRoutes []string
+	ResolvConf    string
+}
+
 type ServiceAction string
 
 const (
@@ -39,6 +51,20 @@ type ToolStatus struct {
 	OK   bool
 }
 
+const (
+	NvidiaStressLoaderBuiltin = "builtin"
+	NvidiaStressLoaderJohn    = "john"
+	NvidiaStressLoaderNCCL    = "nccl"
+)
+
+type NvidiaStressOptions struct {
+	DurationSec       int
+	SizeMB            int
+	Loader            string
+	GPUIndices        []int
+	ExcludeGPUIndices []int
+}
+
 func New() *System {
 	return &System{}
 }

audit/internal/webui/api.go

@@ -4,19 +4,25 @@ import (
 	"bufio"
 	"context"
 	"encoding/json"
+	"errors"
 	"fmt"
 	"io"
 	"net/http"
+	"os"
 	"os/exec"
 	"path/filepath"
+	"regexp"
 	"strings"
 	"sync/atomic"
+	"syscall"
 	"time"
 
 	"bee/audit/internal/app"
 	"bee/audit/internal/platform"
 )
 
+var ansiEscapeRE = regexp.MustCompile(`\x1b\[[0-9;]*[a-zA-Z]|\x1b[()][A-Z0-9]|\x1b[DABC]`)
+
 // ── Job ID counter ────────────────────────────────────────────────────────────
 
 var jobCounter atomic.Uint64
@@ -91,11 +97,25 @@ func runCmdJob(j *jobState, cmd *exec.Cmd) {
 		j.finish(err.Error())
 		return
 	}
+	// Lower the CPU scheduling priority of stress/audit subprocesses to nice+10
+	// so the X server and kernel interrupt handling remain responsive under load
+	// (prevents KVM/IPMI graphical console from freezing during GPU stress tests).
+	if cmd.Process != nil {
+		_ = syscall.Setpriority(syscall.PRIO_PROCESS, cmd.Process.Pid, 10)
+	}
 
 	go func() {
 		scanner := bufio.NewScanner(pr)
 		for scanner.Scan() {
-			j.append(scanner.Text())
+			// Split on \r to handle progress-bar style output (e.g. \r overwrites)
+			// and strip ANSI escape codes so logs are readable in the browser.
+			parts := strings.Split(scanner.Text(), "\r")
+			for _, part := range parts {
+				line := ansiEscapeRE.ReplaceAllString(part, "")
+				if line != "" {
+					j.append(line)
+				}
+			}
 		}
 	}()
 
@@ -110,39 +130,37 @@ func runCmdJob(j *jobState, cmd *exec.Cmd) {
 
 // ── Audit ─────────────────────────────────────────────────────────────────────
 
-func (h *handler) handleAPIAuditRun(w http.ResponseWriter, r *http.Request) {
+func (h *handler) handleAPIAuditRun(w http.ResponseWriter, _ *http.Request) {
 	if h.opts.App == nil {
 		writeError(w, http.StatusServiceUnavailable, "app not configured")
 		return
 	}
-	id := newJobID("audit")
-	j := globalJobs.create(id)
-	go func() {
-		j.append("Running audit...")
-		result, err := h.opts.App.RunAuditNow(h.opts.RuntimeMode)
-		if err != nil {
-			j.append("ERROR: " + err.Error())
-			j.finish(err.Error())
-			return
-		}
-		for _, line := range strings.Split(result.Body, "\n") {
-			if line != "" {
-				j.append(line)
-			}
-		}
-		j.finish("")
-	}()
-	writeJSON(w, map[string]string{"job_id": id})
+	t := &Task{
+		ID:        newJobID("audit"),
+		Name:      "Audit",
+		Target:    "audit",
+		Status:    TaskPending,
+		CreatedAt: time.Now(),
+	}
+	globalQueue.enqueue(t)
+	writeJSON(w, map[string]string{"task_id": t.ID, "job_id": t.ID})
 }
 
 func (h *handler) handleAPIAuditStream(w http.ResponseWriter, r *http.Request) {
 	id := r.URL.Query().Get("job_id")
-	j, ok := globalJobs.get(id)
-	if !ok {
-		http.Error(w, "job not found", http.StatusNotFound)
+	if id == "" {
+		id = r.URL.Query().Get("task_id")
+	}
+	// Try task queue first, then legacy job manager
+	if j, ok := globalQueue.findJob(id); ok {
+		streamJob(w, r, j)
 		return
 	}
-	streamJob(w, r, j)
+	if j, ok := globalJobs.get(id); ok {
+		streamJob(w, r, j)
+		return
+	}
+	http.Error(w, "job not found", http.StatusNotFound)
 }
 
 // ── SAT ───────────────────────────────────────────────────────────────────────
@@ -153,96 +171,97 @@ func (h *handler) handleAPISATRun(target string) http.HandlerFunc {
 			writeError(w, http.StatusServiceUnavailable, "app not configured")
 			return
 		}
-		id := newJobID("sat-" + target)
-		j := globalJobs.create(id)
-		ctx, cancel := context.WithCancel(context.Background())
-		j.cancel = cancel
 
-		go func() {
-			defer cancel()
-			j.append(fmt.Sprintf("Starting %s acceptance test...", target))
-			var (
-				archive string
-				err     error
-			)
-
-			// Parse optional parameters
-			var body struct {
-				Duration   int   `json:"duration"`
-				DiagLevel  int   `json:"diag_level"`
-				GPUIndices []int `json:"gpu_indices"`
-			}
-			body.DiagLevel = 1
-			if r.ContentLength > 0 {
-				_ = json.NewDecoder(r.Body).Decode(&body)
-			}
-
-			switch target {
-			case "nvidia":
-				if len(body.GPUIndices) > 0 || body.DiagLevel > 0 {
-					result, e := h.opts.App.RunNvidiaAcceptancePackWithOptions(
-						ctx, "", body.DiagLevel, body.GPUIndices,
-					)
-					if e != nil {
-						err = e
-					} else {
-						archive = result.Body
-					}
-				} else {
-					archive, err = h.opts.App.RunNvidiaAcceptancePack("")
-				}
-			case "memory":
-				archive, err = h.opts.App.RunMemoryAcceptancePack("")
-			case "storage":
-				archive, err = h.opts.App.RunStorageAcceptancePack("")
-			case "cpu":
-				dur := body.Duration
-				if dur <= 0 {
-					dur = 60
-				}
-				archive, err = h.opts.App.RunCPUAcceptancePack("", dur)
-			}
-
-			if err != nil {
-				if ctx.Err() != nil {
-					j.append("Aborted.")
-					j.finish("aborted")
-				} else {
-					j.append("ERROR: " + err.Error())
-					j.finish(err.Error())
-				}
+		var body struct {
+			Duration          int    `json:"duration"`
+			DiagLevel         int    `json:"diag_level"`
+			GPUIndices        []int  `json:"gpu_indices"`
+			ExcludeGPUIndices []int  `json:"exclude_gpu_indices"`
+			Loader            string `json:"loader"`
+			Profile           string `json:"profile"`
+			DisplayName       string `json:"display_name"`
+		}
+		if r.Body != nil {
+			if err := json.NewDecoder(r.Body).Decode(&body); err != nil && !errors.Is(err, io.EOF) {
+				writeError(w, http.StatusBadRequest, "invalid request body")
 				return
 			}
-			j.append(fmt.Sprintf("Archive written: %s", archive))
-			j.finish("")
-		}()
+		}
 
-		writeJSON(w, map[string]string{"job_id": id})
+		name := taskDisplayName(target, body.Profile, body.Loader)
+		t := &Task{
+			ID:        newJobID("sat-" + target),
+			Name:      name,
+			Target:    target,
+			Status:    TaskPending,
+			CreatedAt: time.Now(),
+			params: taskParams{
+				Duration:          body.Duration,
+				DiagLevel:         body.DiagLevel,
+				GPUIndices:        body.GPUIndices,
+				ExcludeGPUIndices: body.ExcludeGPUIndices,
+				Loader:            body.Loader,
+				BurnProfile:       body.Profile,
+				DisplayName:       body.DisplayName,
+			},
+		}
+		if strings.TrimSpace(body.DisplayName) != "" {
+			t.Name = body.DisplayName
+		}
+		globalQueue.enqueue(t)
+		writeJSON(w, map[string]string{"task_id": t.ID, "job_id": t.ID})
 	}
 }
 
 func (h *handler) handleAPISATStream(w http.ResponseWriter, r *http.Request) {
 	id := r.URL.Query().Get("job_id")
-	j, ok := globalJobs.get(id)
-	if !ok {
-		http.Error(w, "job not found", http.StatusNotFound)
+	if id == "" {
+		id = r.URL.Query().Get("task_id")
+	}
+	if j, ok := globalQueue.findJob(id); ok {
+		streamJob(w, r, j)
 		return
 	}
-	streamJob(w, r, j)
+	if j, ok := globalJobs.get(id); ok {
+		streamJob(w, r, j)
+		return
+	}
+	http.Error(w, "job not found", http.StatusNotFound)
 }
 
 func (h *handler) handleAPISATAbort(w http.ResponseWriter, r *http.Request) {
 	id := r.URL.Query().Get("job_id")
-	j, ok := globalJobs.get(id)
-	if !ok {
-		http.Error(w, "job not found", http.StatusNotFound)
+	if id == "" {
+		id = r.URL.Query().Get("task_id")
+	}
+	if t, ok := globalQueue.findByID(id); ok {
+		globalQueue.mu.Lock()
+		switch t.Status {
+		case TaskPending:
+			t.Status = TaskCancelled
+			now := time.Now()
+			t.DoneAt = &now
+		case TaskRunning:
+			if t.job != nil {
+				t.job.abort()
+			}
+			t.Status = TaskCancelled
+			now := time.Now()
+			t.DoneAt = &now
+		}
+		globalQueue.mu.Unlock()
+		writeJSON(w, map[string]string{"status": "aborted"})
 		return
 	}
-	if j.abort() {
-		writeJSON(w, map[string]string{"status": "aborted"})
-	} else {
-		writeJSON(w, map[string]string{"status": "not_running"})
+	if j, ok := globalJobs.get(id); ok {
+		if j.abort() {
+			writeJSON(w, map[string]string{"status": "aborted"})
+		} else {
+			writeJSON(w, map[string]string{"status": "not_running"})
+		}
+		return
 	}
+	http.Error(w, "job not found", http.StatusNotFound)
 }
 
 // ── Services ──────────────────────────────────────────────────────────────────
@@ -332,18 +351,21 @@ func (h *handler) handleAPINetworkDHCP(w http.ResponseWriter, r *http.Request) {
 	}
 	_ = json.NewDecoder(r.Body).Decode(&req)
 
-	var result app.ActionResult
-	var err error
-	if req.Interface == "" || req.Interface == "all" {
-		result, err = h.opts.App.DHCPAllResult()
-	} else {
-		result, err = h.opts.App.DHCPOneResult(req.Interface)
-	}
+	result, err := h.applyPendingNetworkChange(func() (app.ActionResult, error) {
+		if req.Interface == "" || req.Interface == "all" {
+			return h.opts.App.DHCPAllResult()
+		}
+		return h.opts.App.DHCPOneResult(req.Interface)
+	})
 	if err != nil {
 		writeError(w, http.StatusInternalServerError, err.Error())
 		return
 	}
-	writeJSON(w, map[string]string{"status": "ok", "output": result.Body})
+	writeJSON(w, map[string]any{
+		"status":      "ok",
+		"output":      result.Body,
+		"rollback_in": int(netRollbackTimeout.Seconds()),
+	})
 }
 
 func (h *handler) handleAPINetworkStatic(w http.ResponseWriter, r *http.Request) {
@@ -369,12 +391,18 @@ func (h *handler) handleAPINetworkStatic(w http.ResponseWriter, r *http.Request)
 		Gateway:   req.Gateway,
 		DNS:       req.DNS,
 	}
-	result, err := h.opts.App.SetStaticIPv4Result(cfg)
+	result, err := h.applyPendingNetworkChange(func() (app.ActionResult, error) {
+		return h.opts.App.SetStaticIPv4Result(cfg)
+	})
 	if err != nil {
 		writeError(w, http.StatusInternalServerError, err.Error())
 		return
 	}
-	writeJSON(w, map[string]string{"status": "ok", "output": result.Body})
+	writeJSON(w, map[string]any{
+		"status":      "ok",
+		"output":      result.Body,
+		"rollback_in": int(netRollbackTimeout.Seconds()),
+	})
 }
 
 // ── Export ────────────────────────────────────────────────────────────────────
@@ -401,6 +429,110 @@ func (h *handler) handleAPIExportBundle(w http.ResponseWriter, r *http.Request)
 	})
 }
 
+func (h *handler) handleAPIExportUSBTargets(w http.ResponseWriter, _ *http.Request) {
+	if h.opts.App == nil {
+		writeError(w, http.StatusServiceUnavailable, "app not configured")
+		return
+	}
+	targets, err := h.opts.App.ListRemovableTargets()
+	if err != nil {
+		writeError(w, http.StatusInternalServerError, err.Error())
+		return
+	}
+	if targets == nil {
+		targets = []platform.RemovableTarget{}
+	}
+	writeJSON(w, targets)
+}
+
+func (h *handler) handleAPIExportUSBAudit(w http.ResponseWriter, r *http.Request) {
+	if h.opts.App == nil {
+		writeError(w, http.StatusServiceUnavailable, "app not configured")
+		return
+	}
+	var target platform.RemovableTarget
+	if err := json.NewDecoder(r.Body).Decode(&target); err != nil || target.Device == "" {
+		writeError(w, http.StatusBadRequest, "device is required")
+		return
+	}
+	result, err := h.opts.App.ExportLatestAuditResult(target)
+	if err != nil {
+		writeError(w, http.StatusInternalServerError, err.Error())
+		return
+	}
+	writeJSON(w, map[string]string{"status": "ok", "message": result.Body})
+}
+
+func (h *handler) handleAPIExportUSBBundle(w http.ResponseWriter, r *http.Request) {
+	if h.opts.App == nil {
+		writeError(w, http.StatusServiceUnavailable, "app not configured")
+		return
+	}
+	var target platform.RemovableTarget
+	if err := json.NewDecoder(r.Body).Decode(&target); err != nil || target.Device == "" {
+		writeError(w, http.StatusBadRequest, "device is required")
+		return
+	}
+	result, err := h.opts.App.ExportSupportBundleResult(target)
+	if err != nil {
+		writeError(w, http.StatusInternalServerError, err.Error())
+		return
+	}
+	writeJSON(w, map[string]string{"status": "ok", "message": result.Body})
+}
+
+// ── GPU presence ──────────────────────────────────────────────────────────────
+
+func (h *handler) handleAPIGPUPresence(w http.ResponseWriter, r *http.Request) {
+	if h.opts.App == nil {
+		writeError(w, http.StatusServiceUnavailable, "app not configured")
+		return
+	}
+	gp := h.opts.App.DetectGPUPresence()
+	w.Header().Set("Content-Type", "application/json")
+	_ = json.NewEncoder(w).Encode(map[string]bool{
+		"nvidia": gp.Nvidia,
+		"amd":    gp.AMD,
+	})
+}
+
+// ── System ────────────────────────────────────────────────────────────────────
+
+func (h *handler) handleAPIRAMStatus(w http.ResponseWriter, r *http.Request) {
+	if h.opts.App == nil {
+		writeError(w, http.StatusServiceUnavailable, "app not configured")
+		return
+	}
+	inRAM := h.opts.App.IsLiveMediaInRAM()
+	w.Header().Set("Content-Type", "application/json")
+	_ = json.NewEncoder(w).Encode(map[string]bool{"in_ram": inRAM})
+}
+
+func (h *handler) handleAPIInstallToRAM(w http.ResponseWriter, r *http.Request) {
+	if h.opts.App == nil {
+		writeError(w, http.StatusServiceUnavailable, "app not configured")
+		return
+	}
+	h.installMu.Lock()
+	installRunning := h.installJob != nil && !h.installJob.isDone()
+	h.installMu.Unlock()
+	if installRunning {
+		writeError(w, http.StatusConflict, "install to disk is already running")
+		return
+	}
+	t := &Task{
+		ID:        newJobID("install-to-ram"),
+		Name:      "Install to RAM",
+		Target:    "install-to-ram",
+		Priority:  10,
+		Status:    TaskPending,
+		CreatedAt: time.Now(),
+	}
+	globalQueue.enqueue(t)
+	w.Header().Set("Content-Type", "application/json")
+	_ = json.NewEncoder(w).Encode(map[string]string{"task_id": t.ID})
+}
+
 // ── Tools ─────────────────────────────────────────────────────────────────────
 
 var standardTools = []string{
@@ -495,6 +627,10 @@ func (h *handler) handleAPIInstallRun(w http.ResponseWriter, r *http.Request) {
 		writeError(w, http.StatusBadRequest, "device not in install candidate list")
 		return
 	}
+	if globalQueue.hasActiveTarget("install-to-ram") {
+		writeError(w, http.StatusConflict, "install to RAM task is already pending or running")
+		return
+	}
 
 	h.installMu.Lock()
 	if h.installJob != nil && !h.installJob.isDone() {
@@ -507,7 +643,7 @@ func (h *handler) handleAPIInstallRun(w http.ResponseWriter, r *http.Request) {
 	h.installMu.Unlock()
 
 	logFile := platform.InstallLogPath(req.Device)
-	go runCmdJob(j, exec.CommandContext(r.Context(), "bee-install", req.Device, logFile))
+	go runCmdJob(j, exec.CommandContext(context.Background(), "bee-install", req.Device, logFile))
 
 	w.WriteHeader(http.StatusNoContent)
 }
@@ -528,57 +664,37 @@ func (h *handler) handleAPIInstallStream(w http.ResponseWriter, r *http.Request)
 
 // ── Metrics SSE ───────────────────────────────────────────────────────────────
 
+func (h *handler) handleAPIMetricsLatest(w http.ResponseWriter, r *http.Request) {
+	sample, ok := h.latestMetric()
+	if !ok {
+		w.Header().Set("Content-Type", "application/json")
+		_, _ = w.Write([]byte("{}"))
+		return
+	}
+	b, err := json.Marshal(sample)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+	w.Header().Set("Content-Type", "application/json")
+	_, _ = w.Write(b)
+}
+
 func (h *handler) handleAPIMetricsStream(w http.ResponseWriter, r *http.Request) {
 	if !sseStart(w) {
 		return
 	}
-	ticker := time.NewTicker(time.Second)
+	ticker := time.NewTicker(1 * time.Second)
 	defer ticker.Stop()
 	for {
 		select {
 		case <-r.Context().Done():
 			return
 		case <-ticker.C:
-			sample := platform.SampleLiveMetrics()
-
-			// Feed server ring buffers
-			for _, t := range sample.Temps {
-				if t.Name == "CPU" {
-					h.ringCPUTemp.push(t.Celsius)
-					break
-				}
+			sample, ok := h.latestMetric()
+			if !ok {
+				continue
 			}
-			h.ringPower.push(sample.PowerW)
-			h.ringCPULoad.push(sample.CPULoadPct)
-			h.ringMemLoad.push(sample.MemLoadPct)
-
-			// Feed fan ring buffers (grow on first sight)
-			h.ringsMu.Lock()
-			for i, fan := range sample.Fans {
-				for len(h.ringFans) <= i {
-					h.ringFans = append(h.ringFans, newMetricsRing(120))
-					h.fanNames = append(h.fanNames, fan.Name)
-				}
-				h.ringFans[i].push(float64(fan.RPM))
-			}
-			// Feed per-GPU ring buffers (grow on first sight)
-			for _, gpu := range sample.GPUs {
-				idx := gpu.GPUIndex
-				for len(h.gpuRings) <= idx {
-					h.gpuRings = append(h.gpuRings, &gpuRings{
-						Temp:    newMetricsRing(120),
-						Util:    newMetricsRing(120),
-						MemUtil: newMetricsRing(120),
-						Power:   newMetricsRing(120),
-					})
-				}
-				h.gpuRings[idx].Temp.push(gpu.TempC)
-				h.gpuRings[idx].Util.push(gpu.UsagePct)
-				h.gpuRings[idx].MemUtil.push(gpu.MemUsagePct)
-				h.gpuRings[idx].Power.push(gpu.PowerW)
-			}
-			h.ringsMu.Unlock()
-
 			b, err := json.Marshal(sample)
 			if err != nil {
 				continue
@@ -589,3 +705,285 @@ func (h *handler) handleAPIMetricsStream(w http.ResponseWriter, r *http.Request)
 		}
 	}
 }
+
+// feedRings pushes one sample into all in-memory ring buffers.
+func (h *handler) feedRings(sample platform.LiveMetricSample) {
+	for _, t := range sample.Temps {
+		switch t.Group {
+		case "cpu":
+			h.pushNamedMetricRing(&h.cpuTempRings, t.Name, t.Celsius)
+		case "ambient":
+			h.pushNamedMetricRing(&h.ambientTempRings, t.Name, t.Celsius)
+		}
+	}
+	h.ringPower.push(sample.PowerW)
+	h.ringCPULoad.push(sample.CPULoadPct)
+	h.ringMemLoad.push(sample.MemLoadPct)
+
+	h.ringsMu.Lock()
+	for i, fan := range sample.Fans {
+		for len(h.ringFans) <= i {
+			h.ringFans = append(h.ringFans, newMetricsRing(120))
+			h.fanNames = append(h.fanNames, fan.Name)
+		}
+		h.ringFans[i].push(float64(fan.RPM))
+	}
+	for _, gpu := range sample.GPUs {
+		idx := gpu.GPUIndex
+		for len(h.gpuRings) <= idx {
+			h.gpuRings = append(h.gpuRings, &gpuRings{
+				Temp:    newMetricsRing(120),
+				Util:    newMetricsRing(120),
+				MemUtil: newMetricsRing(120),
+				Power:   newMetricsRing(120),
+			})
+		}
+		h.gpuRings[idx].Temp.push(gpu.TempC)
+		h.gpuRings[idx].Util.push(gpu.UsagePct)
+		h.gpuRings[idx].MemUtil.push(gpu.MemUsagePct)
+		h.gpuRings[idx].Power.push(gpu.PowerW)
+	}
+	h.ringsMu.Unlock()
+}
+
+func (h *handler) pushNamedMetricRing(dst *[]*namedMetricsRing, name string, value float64) {
+	if name == "" {
+		return
+	}
+	for _, item := range *dst {
+		if item != nil && item.Name == name && item.Ring != nil {
+			item.Ring.push(value)
+			return
+		}
+	}
+	*dst = append(*dst, &namedMetricsRing{
+		Name: name,
+		Ring: newMetricsRing(120),
+	})
+	(*dst)[len(*dst)-1].Ring.push(value)
+}
+
+// ── Network toggle ────────────────────────────────────────────────────────────
+
+const netRollbackTimeout = 60 * time.Second
+
+func (h *handler) handleAPINetworkToggle(w http.ResponseWriter, r *http.Request) {
+	if h.opts.App == nil {
+		writeError(w, http.StatusServiceUnavailable, "app not configured")
+		return
+	}
+	var req struct {
+		Iface string `json:"iface"`
+	}
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil || req.Iface == "" {
+		writeError(w, http.StatusBadRequest, "iface is required")
+		return
+	}
+
+	wasUp, err := h.opts.App.GetInterfaceState(req.Iface)
+	if err != nil {
+		writeError(w, http.StatusInternalServerError, err.Error())
+		return
+	}
+
+	if _, err := h.applyPendingNetworkChange(func() (app.ActionResult, error) {
+		err := h.opts.App.SetInterfaceState(req.Iface, !wasUp)
+		return app.ActionResult{}, err
+	}); err != nil {
+		writeError(w, http.StatusInternalServerError, err.Error())
+		return
+	}
+
+	newState := "up"
+	if wasUp {
+		newState = "down"
+	}
+	writeJSON(w, map[string]any{
+		"iface":       req.Iface,
+		"new_state":   newState,
+		"rollback_in": int(netRollbackTimeout.Seconds()),
+	})
+}
+
+func (h *handler) applyPendingNetworkChange(apply func() (app.ActionResult, error)) (app.ActionResult, error) {
+	if h.opts.App == nil {
+		return app.ActionResult{}, fmt.Errorf("app not configured")
+	}
+
+	if err := h.rollbackPendingNetworkChange(); err != nil && err.Error() != "no pending network change" {
+		return app.ActionResult{}, err
+	}
+
+	snapshot, err := h.opts.App.CaptureNetworkSnapshot()
+	if err != nil {
+		return app.ActionResult{}, err
+	}
+
+	result, err := apply()
+	if err != nil {
+		return result, err
+	}
+
+	pnc := &pendingNetChange{snapshot: snapshot}
+	pnc.timer = time.AfterFunc(netRollbackTimeout, func() {
+		_ = h.opts.App.RestoreNetworkSnapshot(snapshot)
+		h.pendingNetMu.Lock()
+		if h.pendingNet == pnc {
+			h.pendingNet = nil
+		}
+		h.pendingNetMu.Unlock()
+	})
+
+	h.pendingNetMu.Lock()
+	h.pendingNet = pnc
+	h.pendingNetMu.Unlock()
+
+	return result, nil
+}
+
+func (h *handler) handleAPINetworkConfirm(w http.ResponseWriter, _ *http.Request) {
+	h.pendingNetMu.Lock()
+	pnc := h.pendingNet
+	h.pendingNet = nil
+	h.pendingNetMu.Unlock()
+	if pnc != nil {
+		pnc.mu.Lock()
+		pnc.timer.Stop()
+		pnc.mu.Unlock()
+	}
+	writeJSON(w, map[string]string{"status": "confirmed"})
+}
+
+func (h *handler) handleAPINetworkRollback(w http.ResponseWriter, _ *http.Request) {
+	if err := h.rollbackPendingNetworkChange(); err != nil {
+		if err.Error() == "no pending network change" {
+			writeError(w, http.StatusConflict, err.Error())
+			return
+		}
+		writeError(w, http.StatusInternalServerError, err.Error())
+		return
+	}
+	writeJSON(w, map[string]string{"status": "rolled back"})
+}
+
+func (h *handler) rollbackPendingNetworkChange() error {
+	h.pendingNetMu.Lock()
+	pnc := h.pendingNet
+	h.pendingNet = nil
+	h.pendingNetMu.Unlock()
+	if pnc == nil {
+		return fmt.Errorf("no pending network change")
+	}
+	pnc.mu.Lock()
+	pnc.timer.Stop()
+	pnc.mu.Unlock()
+	if h.opts.App != nil {
+		return h.opts.App.RestoreNetworkSnapshot(pnc.snapshot)
+	}
+	return nil
+}
+
+// ── Display / Screen Resolution ───────────────────────────────────────────────
+
+type displayMode struct {
+	Output  string `json:"output"`
+	Mode    string `json:"mode"`
+	Current bool   `json:"current"`
+}
+
+type displayInfo struct {
+	Output  string        `json:"output"`
+	Modes   []displayMode `json:"modes"`
+	Current string        `json:"current"`
+}
+
+var xrandrOutputRE = regexp.MustCompile(`^(\S+)\s+connected`)
+var xrandrModeRE = regexp.MustCompile(`^\s{3}(\d+x\d+)\s`)
+var xrandrCurrentRE = regexp.MustCompile(`\*`)
+
+func parseXrandrOutput(out string) []displayInfo {
+	var infos []displayInfo
+	var cur *displayInfo
+	for _, line := range strings.Split(out, "\n") {
+		if m := xrandrOutputRE.FindStringSubmatch(line); m != nil {
+			if cur != nil {
+				infos = append(infos, *cur)
+			}
+			cur = &displayInfo{Output: m[1]}
+			continue
+		}
+		if cur == nil {
+			continue
+		}
+		if m := xrandrModeRE.FindStringSubmatch(line); m != nil {
+			isCurrent := xrandrCurrentRE.MatchString(line)
+			mode := displayMode{Output: cur.Output, Mode: m[1], Current: isCurrent}
+			cur.Modes = append(cur.Modes, mode)
+			if isCurrent {
+				cur.Current = m[1]
+			}
+		}
+	}
+	if cur != nil {
+		infos = append(infos, *cur)
+	}
+	return infos
+}
+
+func xrandrCommand(args ...string) *exec.Cmd {
+	cmd := exec.Command("xrandr", args...)
+	env := append([]string{}, os.Environ()...)
+	hasDisplay := false
+	hasXAuthority := false
+	for _, kv := range env {
+		if strings.HasPrefix(kv, "DISPLAY=") && strings.TrimPrefix(kv, "DISPLAY=") != "" {
+			hasDisplay = true
+		}
+		if strings.HasPrefix(kv, "XAUTHORITY=") && strings.TrimPrefix(kv, "XAUTHORITY=") != "" {
+			hasXAuthority = true
+		}
+	}
+	if !hasDisplay {
+		env = append(env, "DISPLAY=:0")
+	}
+	if !hasXAuthority {
+		env = append(env, "XAUTHORITY=/home/bee/.Xauthority")
+	}
+	cmd.Env = env
+	return cmd
+}
+
+func (h *handler) handleAPIDisplayResolutions(w http.ResponseWriter, _ *http.Request) {
+	out, err := xrandrCommand().Output()
+	if err != nil {
+		writeError(w, http.StatusInternalServerError, "xrandr: "+err.Error())
+		return
+	}
+	writeJSON(w, parseXrandrOutput(string(out)))
+}
+
+func (h *handler) handleAPIDisplaySet(w http.ResponseWriter, r *http.Request) {
+	var req struct {
+		Output string `json:"output"`
+		Mode   string `json:"mode"`
+	}
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil || req.Output == "" || req.Mode == "" {
+		writeError(w, http.StatusBadRequest, "output and mode are required")
+		return
+	}
+	// Validate mode looks like WxH to prevent injection
+	if !regexp.MustCompile(`^\d+x\d+$`).MatchString(req.Mode) {
+		writeError(w, http.StatusBadRequest, "invalid mode format")
+		return
+	}
+	// Validate output name (no special chars)
+	if !regexp.MustCompile(`^[A-Za-z0-9_\-]+$`).MatchString(req.Output) {
+		writeError(w, http.StatusBadRequest, "invalid output name")
+		return
+	}
+	if out, err := xrandrCommand("--output", req.Output, "--mode", req.Mode).CombinedOutput(); err != nil {
+		writeError(w, http.StatusInternalServerError, "xrandr: "+strings.TrimSpace(string(out)))
+		return
+	}
+	writeJSON(w, map[string]string{"status": "ok", "output": req.Output, "mode": req.Mode})
+}

audit/internal/webui/api_test.go

@@ -0,0 +1,64 @@
+package webui
+
+import (
+	"net/http/httptest"
+	"strings"
+	"testing"
+
+	"bee/audit/internal/app"
+)
+
+func TestXrandrCommandAddsDefaultX11Env(t *testing.T) {
+	t.Setenv("DISPLAY", "")
+	t.Setenv("XAUTHORITY", "")
+
+	cmd := xrandrCommand("--query")
+
+	var hasDisplay bool
+	var hasXAuthority bool
+	for _, kv := range cmd.Env {
+		if kv == "DISPLAY=:0" {
+			hasDisplay = true
+		}
+		if kv == "XAUTHORITY=/home/bee/.Xauthority" {
+			hasXAuthority = true
+		}
+	}
+	if !hasDisplay {
+		t.Fatalf("DISPLAY not injected: %v", cmd.Env)
+	}
+	if !hasXAuthority {
+		t.Fatalf("XAUTHORITY not injected: %v", cmd.Env)
+	}
+}
+
+func TestHandleAPISATRunDecodesBodyWithoutContentLength(t *testing.T) {
+	globalQueue.mu.Lock()
+	originalTasks := globalQueue.tasks
+	globalQueue.tasks = nil
+	globalQueue.mu.Unlock()
+	t.Cleanup(func() {
+		globalQueue.mu.Lock()
+		globalQueue.tasks = originalTasks
+		globalQueue.mu.Unlock()
+	})
+
+	h := &handler{opts: HandlerOptions{App: &app.App{}}}
+	req := httptest.NewRequest("POST", "/api/sat/cpu/run", strings.NewReader(`{"profile":"smoke"}`))
+	req.ContentLength = -1
+	rec := httptest.NewRecorder()
+
+	h.handleAPISATRun("cpu").ServeHTTP(rec, req)
+
+	if rec.Code != 200 {
+		t.Fatalf("status=%d body=%s", rec.Code, rec.Body.String())
+	}
+	globalQueue.mu.Lock()
+	defer globalQueue.mu.Unlock()
+	if len(globalQueue.tasks) != 1 {
+		t.Fatalf("tasks=%d want 1", len(globalQueue.tasks))
+	}
+	if got := globalQueue.tasks[0].params.BurnProfile; got != "smoke" {
+		t.Fatalf("burn profile=%q want smoke", got)
+	}
+}

audit/internal/webui/jobs.go

@@ -1,18 +1,21 @@
 package webui
 
 import (
+	"os"
+	"strings"
 	"sync"
 	"time"
 )
 
 // jobState holds the output lines and completion status of an async job.
 type jobState struct {
-	lines  []string
-	done   bool
-	err    string
-	mu     sync.Mutex
-	subs   []chan string
-	cancel func() // optional cancel function; nil if job is not cancellable
+	lines   []string
+	done    bool
+	err     string
+	mu      sync.Mutex
+	subs    []chan string
+	cancel  func() // optional cancel function; nil if job is not cancellable
+	logPath string
 }
 
 // abort cancels the job if it has a cancel function and is not yet done.
@@ -30,6 +33,9 @@ func (j *jobState) append(line string) {
 	j.mu.Lock()
 	defer j.mu.Unlock()
 	j.lines = append(j.lines, line)
+	if j.logPath != "" {
+		appendJobLog(j.logPath, line)
+	}
 	for _, ch := range j.subs {
 		select {
 		case ch <- line:
@@ -100,3 +106,32 @@ func (m *jobManager) get(id string) (*jobState, bool) {
 	j, ok := m.jobs[id]
 	return j, ok
 }
+
+func newTaskJobState(logPath string) *jobState {
+	j := &jobState{logPath: logPath}
+	if logPath == "" {
+		return j
+	}
+	data, err := os.ReadFile(logPath)
+	if err != nil || len(data) == 0 {
+		return j
+	}
+	lines := strings.Split(strings.ReplaceAll(string(data), "\r\n", "\n"), "\n")
+	if len(lines) > 0 && lines[len(lines)-1] == "" {
+		lines = lines[:len(lines)-1]
+	}
+	j.lines = append(j.lines, lines...)
+	return j
+}
+
+func appendJobLog(path, line string) {
+	if path == "" {
+		return
+	}
+	f, err := os.OpenFile(path, os.O_CREATE|os.O_APPEND|os.O_WRONLY, 0644)
+	if err != nil {
+		return
+	}
+	defer f.Close()
+	_, _ = f.WriteString(line + "\n")
+}

audit/internal/webui/metricsdb.go

@@ -0,0 +1,317 @@
+package webui
+
+import (
+	"database/sql"
+	"encoding/csv"
+	"io"
+	"strconv"
+	"time"
+
+	"bee/audit/internal/platform"
+	_ "modernc.org/sqlite"
+)
+
+const metricsDBPath = "/appdata/bee/metrics.db"
+
+// MetricsDB persists live metric samples to SQLite.
+type MetricsDB struct {
+	db *sql.DB
+}
+
+// openMetricsDB opens (or creates) the metrics database at the given path.
+func openMetricsDB(path string) (*MetricsDB, error) {
+	db, err := sql.Open("sqlite", path+"?_journal=WAL&_busy_timeout=5000")
+	if err != nil {
+		return nil, err
+	}
+	db.SetMaxOpenConns(1)
+	if err := initMetricsSchema(db); err != nil {
+		_ = db.Close()
+		return nil, err
+	}
+	return &MetricsDB{db: db}, nil
+}
+
+func initMetricsSchema(db *sql.DB) error {
+	_, err := db.Exec(`
+CREATE TABLE IF NOT EXISTS sys_metrics (
+  ts           INTEGER NOT NULL,
+  cpu_load_pct REAL,
+  mem_load_pct REAL,
+  power_w      REAL,
+  PRIMARY KEY (ts)
+);
+CREATE TABLE IF NOT EXISTS gpu_metrics (
+  ts            INTEGER NOT NULL,
+  gpu_index     INTEGER NOT NULL,
+  temp_c        REAL,
+  usage_pct     REAL,
+  mem_usage_pct REAL,
+  power_w       REAL,
+  PRIMARY KEY (ts, gpu_index)
+);
+CREATE TABLE IF NOT EXISTS fan_metrics (
+  ts   INTEGER NOT NULL,
+  name TEXT NOT NULL,
+  rpm  REAL,
+  PRIMARY KEY (ts, name)
+);
+CREATE TABLE IF NOT EXISTS temp_metrics (
+  ts      INTEGER NOT NULL,
+  name    TEXT NOT NULL,
+  grp     TEXT NOT NULL,
+  celsius REAL,
+  PRIMARY KEY (ts, name)
+);
+`)
+	return err
+}
+
+// Write inserts one sample into all relevant tables.
+func (m *MetricsDB) Write(s platform.LiveMetricSample) error {
+	ts := s.Timestamp.Unix()
+	tx, err := m.db.Begin()
+	if err != nil {
+		return err
+	}
+	defer func() { _ = tx.Rollback() }()
+
+	_, err = tx.Exec(
+		`INSERT OR REPLACE INTO sys_metrics(ts,cpu_load_pct,mem_load_pct,power_w) VALUES(?,?,?,?)`,
+		ts, s.CPULoadPct, s.MemLoadPct, s.PowerW,
+	)
+	if err != nil {
+		return err
+	}
+	for _, g := range s.GPUs {
+		_, err = tx.Exec(
+			`INSERT OR REPLACE INTO gpu_metrics(ts,gpu_index,temp_c,usage_pct,mem_usage_pct,power_w) VALUES(?,?,?,?,?,?)`,
+			ts, g.GPUIndex, g.TempC, g.UsagePct, g.MemUsagePct, g.PowerW,
+		)
+		if err != nil {
+			return err
+		}
+	}
+	for _, f := range s.Fans {
+		_, err = tx.Exec(
+			`INSERT OR REPLACE INTO fan_metrics(ts,name,rpm) VALUES(?,?,?)`,
+			ts, f.Name, f.RPM,
+		)
+		if err != nil {
+			return err
+		}
+	}
+	for _, t := range s.Temps {
+		_, err = tx.Exec(
+			`INSERT OR REPLACE INTO temp_metrics(ts,name,grp,celsius) VALUES(?,?,?,?)`,
+			ts, t.Name, t.Group, t.Celsius,
+		)
+		if err != nil {
+			return err
+		}
+	}
+	return tx.Commit()
+}
+
+// LoadRecent returns up to n samples in chronological order (oldest first).
+func (m *MetricsDB) LoadRecent(n int) ([]platform.LiveMetricSample, error) {
+	return m.loadSamples(`SELECT ts,cpu_load_pct,mem_load_pct,power_w FROM sys_metrics ORDER BY ts DESC LIMIT ?`, n)
+}
+
+// LoadAll returns all persisted samples in chronological order (oldest first).
+func (m *MetricsDB) LoadAll() ([]platform.LiveMetricSample, error) {
+	return m.loadSamples(`SELECT ts,cpu_load_pct,mem_load_pct,power_w FROM sys_metrics ORDER BY ts`, nil)
+}
+
+// loadSamples reconstructs LiveMetricSample rows from the normalized tables.
+func (m *MetricsDB) loadSamples(query string, args ...any) ([]platform.LiveMetricSample, error) {
+	rows, err := m.db.Query(query, args...)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	type sysRow struct {
+		ts          int64
+		cpu, mem, pwr float64
+	}
+	var sysRows []sysRow
+	for rows.Next() {
+		var r sysRow
+		if err := rows.Scan(&r.ts, &r.cpu, &r.mem, &r.pwr); err != nil {
+			continue
+		}
+		sysRows = append(sysRows, r)
+	}
+	if len(sysRows) == 0 {
+		return nil, nil
+	}
+	// Reverse to chronological order
+	for i, j := 0, len(sysRows)-1; i < j; i, j = i+1, j-1 {
+		sysRows[i], sysRows[j] = sysRows[j], sysRows[i]
+	}
+
+	// Collect min/max ts for range query
+	minTS := sysRows[0].ts
+	maxTS := sysRows[len(sysRows)-1].ts
+
+	// Load GPU rows in range
+	type gpuKey struct{ ts int64; idx int }
+	gpuData := map[gpuKey]platform.GPUMetricRow{}
+	gRows, err := m.db.Query(
+		`SELECT ts,gpu_index,temp_c,usage_pct,mem_usage_pct,power_w FROM gpu_metrics WHERE ts>=? AND ts<=? ORDER BY ts,gpu_index`,
+		minTS, maxTS,
+	)
+	if err == nil {
+		defer gRows.Close()
+		for gRows.Next() {
+			var ts int64
+			var g platform.GPUMetricRow
+			if err := gRows.Scan(&ts, &g.GPUIndex, &g.TempC, &g.UsagePct, &g.MemUsagePct, &g.PowerW); err == nil {
+				gpuData[gpuKey{ts, g.GPUIndex}] = g
+			}
+		}
+	}
+
+	// Load fan rows in range
+	type fanKey struct{ ts int64; name string }
+	fanData := map[fanKey]float64{}
+	fRows, err := m.db.Query(
+		`SELECT ts,name,rpm FROM fan_metrics WHERE ts>=? AND ts<=?`, minTS, maxTS,
+	)
+	if err == nil {
+		defer fRows.Close()
+		for fRows.Next() {
+			var ts int64
+			var name string
+			var rpm float64
+			if err := fRows.Scan(&ts, &name, &rpm); err == nil {
+				fanData[fanKey{ts, name}] = rpm
+			}
+		}
+	}
+
+	// Load temp rows in range
+	type tempKey struct{ ts int64; name string }
+	tempData := map[tempKey]platform.TempReading{}
+	tRows, err := m.db.Query(
+		`SELECT ts,name,grp,celsius FROM temp_metrics WHERE ts>=? AND ts<=?`, minTS, maxTS,
+	)
+	if err == nil {
+		defer tRows.Close()
+		for tRows.Next() {
+			var ts int64
+			var t platform.TempReading
+			if err := tRows.Scan(&ts, &t.Name, &t.Group, &t.Celsius); err == nil {
+				tempData[tempKey{ts, t.Name}] = t
+			}
+		}
+	}
+
+	// Collect unique GPU indices and fan names from loaded data (preserve order)
+	seenGPU := map[int]bool{}
+	var gpuIndices []int
+	for k := range gpuData {
+		if !seenGPU[k.idx] {
+			seenGPU[k.idx] = true
+			gpuIndices = append(gpuIndices, k.idx)
+		}
+	}
+	seenFan := map[string]bool{}
+	var fanNames []string
+	for k := range fanData {
+		if !seenFan[k.name] {
+			seenFan[k.name] = true
+			fanNames = append(fanNames, k.name)
+		}
+	}
+	seenTemp := map[string]bool{}
+	var tempNames []string
+	for k := range tempData {
+		if !seenTemp[k.name] {
+			seenTemp[k.name] = true
+			tempNames = append(tempNames, k.name)
+		}
+	}
+
+	samples := make([]platform.LiveMetricSample, len(sysRows))
+	for i, r := range sysRows {
+		s := platform.LiveMetricSample{
+			Timestamp:  time.Unix(r.ts, 0).UTC(),
+			CPULoadPct: r.cpu,
+			MemLoadPct: r.mem,
+			PowerW:     r.pwr,
+		}
+		for _, idx := range gpuIndices {
+			if g, ok := gpuData[gpuKey{r.ts, idx}]; ok {
+				s.GPUs = append(s.GPUs, g)
+			}
+		}
+		for _, name := range fanNames {
+			if rpm, ok := fanData[fanKey{r.ts, name}]; ok {
+				s.Fans = append(s.Fans, platform.FanReading{Name: name, RPM: rpm})
+			}
+		}
+		for _, name := range tempNames {
+			if t, ok := tempData[tempKey{r.ts, name}]; ok {
+				s.Temps = append(s.Temps, t)
+			}
+		}
+		samples[i] = s
+	}
+	return samples, nil
+}
+
+// ExportCSV writes all sys+gpu data as CSV to w.
+func (m *MetricsDB) ExportCSV(w io.Writer) error {
+	rows, err := m.db.Query(`
+		SELECT s.ts, s.cpu_load_pct, s.mem_load_pct, s.power_w,
+		       g.gpu_index, g.temp_c, g.usage_pct, g.mem_usage_pct, g.power_w
+		FROM sys_metrics s
+		LEFT JOIN gpu_metrics g ON g.ts = s.ts
+		ORDER BY s.ts, g.gpu_index
+	`)
+	if err != nil {
+		return err
+	}
+	defer rows.Close()
+
+	cw := csv.NewWriter(w)
+	_ = cw.Write([]string{"ts", "cpu_load_pct", "mem_load_pct", "sys_power_w", "gpu_index", "gpu_temp_c", "gpu_usage_pct", "gpu_mem_pct", "gpu_power_w"})
+	for rows.Next() {
+		var ts int64
+		var cpu, mem, pwr float64
+		var gpuIdx sql.NullInt64
+		var gpuTemp, gpuUse, gpuMem, gpuPow sql.NullFloat64
+		if err := rows.Scan(&ts, &cpu, &mem, &pwr, &gpuIdx, &gpuTemp, &gpuUse, &gpuMem, &gpuPow); err != nil {
+			continue
+		}
+		row := []string{
+			strconv.FormatInt(ts, 10),
+			strconv.FormatFloat(cpu, 'f', 2, 64),
+			strconv.FormatFloat(mem, 'f', 2, 64),
+			strconv.FormatFloat(pwr, 'f', 1, 64),
+		}
+		if gpuIdx.Valid {
+			row = append(row,
+				strconv.FormatInt(gpuIdx.Int64, 10),
+				strconv.FormatFloat(gpuTemp.Float64, 'f', 1, 64),
+				strconv.FormatFloat(gpuUse.Float64, 'f', 1, 64),
+				strconv.FormatFloat(gpuMem.Float64, 'f', 1, 64),
+				strconv.FormatFloat(gpuPow.Float64, 'f', 1, 64),
+			)
+		} else {
+			row = append(row, "", "", "", "", "")
+		}
+		_ = cw.Write(row)
+	}
+	cw.Flush()
+	return cw.Error()
+}
+
+// Close closes the database.
+func (m *MetricsDB) Close() { _ = m.db.Close() }
+
+func nullFloat(v float64) sql.NullFloat64 {
+	return sql.NullFloat64{Float64: v, Valid: true}
+}

audit/internal/webui/server_test.go

@@ -7,9 +7,89 @@ import (
 	"path/filepath"
 	"strings"
 	"testing"
+	"time"
+
+	"bee/audit/internal/platform"
 )
 
-func TestRootRendersShellWithIframe(t *testing.T) {
+func TestChartLegendNumber(t *testing.T) {
+	tests := []struct {
+		in   float64
+		want string
+	}{
+		{in: 0.4, want: "0"},
+		{in: 61.5, want: "62"},
+		{in: 999.4, want: "999"},
+		{in: 1200, want: "1,2k"},
+		{in: 1250, want: "1,25k"},
+		{in: 1310, want: "1,31k"},
+		{in: 1500, want: "1,5k"},
+		{in: 2600, want: "2,6k"},
+		{in: 10200, want: "10k"},
+	}
+	for _, tc := range tests {
+		if got := chartLegendNumber(tc.in); got != tc.want {
+			t.Fatalf("chartLegendNumber(%v)=%q want %q", tc.in, got, tc.want)
+		}
+	}
+}
+
+func TestChartDataFromSamplesUsesFullHistory(t *testing.T) {
+	samples := []platform.LiveMetricSample{
+		{
+			Timestamp:  time.Now().Add(-3 * time.Minute),
+			CPULoadPct: 10,
+			MemLoadPct: 20,
+			PowerW:     300,
+			GPUs: []platform.GPUMetricRow{
+				{GPUIndex: 0, UsagePct: 90, MemUsagePct: 5, PowerW: 120, TempC: 50},
+			},
+		},
+		{
+			Timestamp:  time.Now().Add(-2 * time.Minute),
+			CPULoadPct: 30,
+			MemLoadPct: 40,
+			PowerW:     320,
+			GPUs: []platform.GPUMetricRow{
+				{GPUIndex: 0, UsagePct: 95, MemUsagePct: 7, PowerW: 125, TempC: 51},
+			},
+		},
+		{
+			Timestamp:  time.Now().Add(-1 * time.Minute),
+			CPULoadPct: 50,
+			MemLoadPct: 60,
+			PowerW:     340,
+			GPUs: []platform.GPUMetricRow{
+				{GPUIndex: 0, UsagePct: 97, MemUsagePct: 9, PowerW: 130, TempC: 52},
+			},
+		},
+	}
+
+	datasets, names, labels, title, _, _, ok := chartDataFromSamples("gpu-all-power", samples)
+	if !ok {
+		t.Fatal("chartDataFromSamples returned ok=false")
+	}
+	if title != "GPU Power" {
+		t.Fatalf("title=%q", title)
+	}
+	if len(names) != 1 || names[0] != "GPU 0" {
+		t.Fatalf("names=%v", names)
+	}
+	if len(labels) != len(samples) {
+		t.Fatalf("labels len=%d want %d", len(labels), len(samples))
+	}
+	if len(datasets) != 1 || len(datasets[0]) != len(samples) {
+		t.Fatalf("datasets shape=%v", datasets)
+	}
+	if got := datasets[0][0]; got != 120 {
+		t.Fatalf("datasets[0][0]=%v want 120", got)
+	}
+	if got := datasets[0][2]; got != 130 {
+		t.Fatalf("datasets[0][2]=%v want 130", got)
+	}
+}
+
+func TestRootRendersDashboard(t *testing.T) {
 	dir := t.TempDir()
 	path := filepath.Join(dir, "audit.json")
 	exportDir := filepath.Join(dir, "export")
@@ -31,11 +111,12 @@ func TestRootRendersShellWithIframe(t *testing.T) {
 	if first.Code != http.StatusOK {
 		t.Fatalf("first status=%d", first.Code)
 	}
-	if !strings.Contains(first.Body.String(), `iframe`) || !strings.Contains(first.Body.String(), `src="/viewer"`) {
-		t.Fatalf("first body missing iframe viewer: %s", first.Body.String())
+	// Dashboard should contain the audit nav link and hardware summary
+	if !strings.Contains(first.Body.String(), `href="/audit"`) {
+		t.Fatalf("first body missing audit nav link: %s", first.Body.String())
 	}
-	if !strings.Contains(first.Body.String(), "/export/support.tar.gz") {
-		t.Fatalf("first body missing support bundle link: %s", first.Body.String())
+	if !strings.Contains(first.Body.String(), `/viewer`) {
+		t.Fatalf("first body missing viewer link: %s", first.Body.String())
 	}
 	if got := first.Header().Get("Cache-Control"); got != "no-store" {
 		t.Fatalf("first cache-control=%q", got)
@@ -50,8 +131,57 @@ func TestRootRendersShellWithIframe(t *testing.T) {
 	if second.Code != http.StatusOK {
 		t.Fatalf("second status=%d", second.Code)
 	}
-	if !strings.Contains(second.Body.String(), `src="/viewer"`) {
-		t.Fatalf("second body missing iframe viewer: %s", second.Body.String())
+	if !strings.Contains(second.Body.String(), `Hardware Summary`) {
+		t.Fatalf("second body missing hardware summary: %s", second.Body.String())
+	}
+}
+
+func TestRootShowsRunAuditButtonWhenSnapshotMissing(t *testing.T) {
+	dir := t.TempDir()
+	exportDir := filepath.Join(dir, "export")
+	if err := os.MkdirAll(exportDir, 0755); err != nil {
+		t.Fatal(err)
+	}
+
+	handler := NewHandler(HandlerOptions{
+		Title:     "Bee Hardware Audit",
+		AuditPath: filepath.Join(dir, "missing-audit.json"),
+		ExportDir: exportDir,
+	})
+
+	rec := httptest.NewRecorder()
+	handler.ServeHTTP(rec, httptest.NewRequest(http.MethodGet, "/", nil))
+	if rec.Code != http.StatusOK {
+		t.Fatalf("status=%d", rec.Code)
+	}
+	body := rec.Body.String()
+	if !strings.Contains(body, `Run Audit`) {
+		t.Fatalf("dashboard missing run audit button: %s", body)
+	}
+	if strings.Contains(body, `No audit data`) {
+		t.Fatalf("dashboard still shows empty audit badge: %s", body)
+	}
+}
+
+func TestAuditPageRendersViewerFrameAndActions(t *testing.T) {
+	dir := t.TempDir()
+	path := filepath.Join(dir, "audit.json")
+	if err := os.WriteFile(path, []byte(`{"collected_at":"2026-03-15T00:00:00Z"}`), 0644); err != nil {
+		t.Fatal(err)
+	}
+
+	handler := NewHandler(HandlerOptions{AuditPath: path})
+	rec := httptest.NewRecorder()
+	handler.ServeHTTP(rec, httptest.NewRequest(http.MethodGet, "/audit", nil))
+	if rec.Code != http.StatusOK {
+		t.Fatalf("status=%d", rec.Code)
+	}
+	body := rec.Body.String()
+	if !strings.Contains(body, `iframe class="viewer-frame" src="/viewer"`) {
+		t.Fatalf("audit page missing viewer frame: %s", body)
+	}
+	if !strings.Contains(body, `openAuditModal()`) {
+		t.Fatalf("audit page missing action modal trigger: %s", body)
 	}
 }
 
@@ -103,8 +233,8 @@ func TestAuditJSONServesLatestSnapshot(t *testing.T) {
 	if rec.Code != http.StatusOK {
 		t.Fatalf("status=%d", rec.Code)
 	}
-	if got := strings.TrimSpace(rec.Body.String()); got != body {
-		t.Fatalf("body=%q want %q", got, body)
+	if !strings.Contains(rec.Body.String(), "SERIAL-API") {
+		t.Fatalf("body missing expected serial: %s", rec.Body.String())
 	}
 	if got := rec.Header().Get("Content-Type"); !strings.Contains(got, "application/json") {
 		t.Fatalf("content-type=%q", got)

audit/internal/webui/tasks.go

@@ -0,0 +1,735 @@
+package webui
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"os"
+	"path/filepath"
+	"sort"
+	"strings"
+	"sync"
+	"time"
+
+	"bee/audit/internal/app"
+	"bee/audit/internal/platform"
+)
+
+// Task statuses.
+const (
+	TaskPending   = "pending"
+	TaskRunning   = "running"
+	TaskDone      = "done"
+	TaskFailed    = "failed"
+	TaskCancelled = "cancelled"
+)
+
+// taskNames maps target → human-readable name for validate (SAT) runs.
+var taskNames = map[string]string{
+	"nvidia":          "NVIDIA SAT",
+	"nvidia-stress":   "NVIDIA GPU Stress",
+	"memory":          "Memory SAT",
+	"storage":         "Storage SAT",
+	"cpu":             "CPU SAT",
+	"amd":             "AMD GPU SAT",
+	"amd-mem":         "AMD GPU MEM Integrity",
+	"amd-bandwidth":   "AMD GPU MEM Bandwidth",
+	"amd-stress":      "AMD GPU Burn-in",
+	"memory-stress":   "Memory Burn-in",
+	"sat-stress":      "SAT Stress (stressapptest)",
+	"platform-stress": "Platform Thermal Cycling",
+	"audit":           "Audit",
+	"install":         "Install to Disk",
+	"install-to-ram":  "Install to RAM",
+}
+
+// burnNames maps target → human-readable name when a burn profile is set.
+var burnNames = map[string]string{
+	"nvidia": "NVIDIA Burn-in",
+	"memory": "Memory Burn-in",
+	"cpu":    "CPU Burn-in",
+	"amd":    "AMD GPU Burn-in",
+}
+
+func nvidiaStressTaskName(loader string) string {
+	switch strings.TrimSpace(strings.ToLower(loader)) {
+	case platform.NvidiaStressLoaderJohn:
+		return "NVIDIA GPU Stress (John/OpenCL)"
+	case platform.NvidiaStressLoaderNCCL:
+		return "NVIDIA GPU Stress (NCCL)"
+	default:
+		return "NVIDIA GPU Stress (bee-gpu-burn)"
+	}
+}
+
+func taskDisplayName(target, profile, loader string) string {
+	name := taskNames[target]
+	if profile != "" {
+		if n, ok := burnNames[target]; ok {
+			name = n
+		}
+	}
+	if target == "nvidia-stress" {
+		name = nvidiaStressTaskName(loader)
+	}
+	if name == "" {
+		name = target
+	}
+	return name
+}
+
+// Task represents one unit of work in the queue.
+type Task struct {
+	ID        string     `json:"id"`
+	Name      string     `json:"name"`
+	Target    string     `json:"target"`
+	Priority  int        `json:"priority"`
+	Status    string     `json:"status"`
+	CreatedAt time.Time  `json:"created_at"`
+	StartedAt *time.Time `json:"started_at,omitempty"`
+	DoneAt    *time.Time `json:"done_at,omitempty"`
+	ErrMsg    string     `json:"error,omitempty"`
+	LogPath   string     `json:"log_path,omitempty"`
+
+	// runtime fields (not serialised)
+	job    *jobState
+	params taskParams
+}
+
+// taskParams holds optional parameters parsed from the run request.
+type taskParams struct {
+	Duration          int    `json:"duration,omitempty"`
+	DiagLevel         int    `json:"diag_level,omitempty"`
+	GPUIndices        []int  `json:"gpu_indices,omitempty"`
+	ExcludeGPUIndices []int  `json:"exclude_gpu_indices,omitempty"`
+	Loader            string `json:"loader,omitempty"`
+	BurnProfile       string `json:"burn_profile,omitempty"`
+	DisplayName       string `json:"display_name,omitempty"`
+	Device            string `json:"device,omitempty"` // for install
+}
+
+type persistedTask struct {
+	ID        string     `json:"id"`
+	Name      string     `json:"name"`
+	Target    string     `json:"target"`
+	Priority  int        `json:"priority"`
+	Status    string     `json:"status"`
+	CreatedAt time.Time  `json:"created_at"`
+	StartedAt *time.Time `json:"started_at,omitempty"`
+	DoneAt    *time.Time `json:"done_at,omitempty"`
+	ErrMsg    string     `json:"error,omitempty"`
+	LogPath   string     `json:"log_path,omitempty"`
+	Params    taskParams `json:"params,omitempty"`
+}
+
+type burnPreset struct {
+	NvidiaDiag  int
+	DurationSec int
+}
+
+func resolveBurnPreset(profile string) burnPreset {
+	switch profile {
+	case "overnight":
+		return burnPreset{NvidiaDiag: 4, DurationSec: 8 * 60 * 60}
+	case "acceptance":
+		return burnPreset{NvidiaDiag: 3, DurationSec: 60 * 60}
+	default:
+		return burnPreset{NvidiaDiag: 1, DurationSec: 5 * 60}
+	}
+}
+
+func resolvePlatformStressPreset(profile string) platform.PlatformStressOptions {
+	switch profile {
+	case "overnight":
+		return platform.PlatformStressOptions{Cycles: []platform.PlatformStressCycle{
+			{LoadSec: 600, IdleSec: 120},
+			{LoadSec: 600, IdleSec: 60},
+			{LoadSec: 600, IdleSec: 30},
+			{LoadSec: 600, IdleSec: 120},
+			{LoadSec: 600, IdleSec: 60},
+			{LoadSec: 600, IdleSec: 30},
+			{LoadSec: 600, IdleSec: 120},
+			{LoadSec: 600, IdleSec: 60},
+		}}
+	case "acceptance":
+		return platform.PlatformStressOptions{Cycles: []platform.PlatformStressCycle{
+			{LoadSec: 300, IdleSec: 60},
+			{LoadSec: 300, IdleSec: 30},
+			{LoadSec: 300, IdleSec: 60},
+			{LoadSec: 300, IdleSec: 30},
+		}}
+	default: // smoke
+		return platform.PlatformStressOptions{Cycles: []platform.PlatformStressCycle{
+			{LoadSec: 90, IdleSec: 60},
+			{LoadSec: 90, IdleSec: 30},
+		}}
+	}
+}
+
+// taskQueue manages a priority-ordered list of tasks and runs them one at a time.
+type taskQueue struct {
+	mu        sync.Mutex
+	tasks     []*Task
+	trigger   chan struct{}
+	opts      *HandlerOptions // set by startWorker
+	statePath string
+	logsDir   string
+	started   bool
+}
+
+var globalQueue = &taskQueue{trigger: make(chan struct{}, 1)}
+
+const maxTaskHistory = 50
+
+var (
+	runMemoryAcceptancePackCtx = func(a *app.App, ctx context.Context, baseDir string, logFunc func(string)) (string, error) {
+		return a.RunMemoryAcceptancePackCtx(ctx, baseDir, logFunc)
+	}
+	runStorageAcceptancePackCtx = func(a *app.App, ctx context.Context, baseDir string, logFunc func(string)) (string, error) {
+		return a.RunStorageAcceptancePackCtx(ctx, baseDir, logFunc)
+	}
+	runCPUAcceptancePackCtx = func(a *app.App, ctx context.Context, baseDir string, durationSec int, logFunc func(string)) (string, error) {
+		return a.RunCPUAcceptancePackCtx(ctx, baseDir, durationSec, logFunc)
+	}
+	runAMDAcceptancePackCtx = func(a *app.App, ctx context.Context, baseDir string, logFunc func(string)) (string, error) {
+		return a.RunAMDAcceptancePackCtx(ctx, baseDir, logFunc)
+	}
+	runAMDMemIntegrityPackCtx = func(a *app.App, ctx context.Context, baseDir string, logFunc func(string)) (string, error) {
+		return a.RunAMDMemIntegrityPackCtx(ctx, baseDir, logFunc)
+	}
+	runAMDMemBandwidthPackCtx = func(a *app.App, ctx context.Context, baseDir string, logFunc func(string)) (string, error) {
+		return a.RunAMDMemBandwidthPackCtx(ctx, baseDir, logFunc)
+	}
+	runNvidiaStressPackCtx = func(a *app.App, ctx context.Context, baseDir string, opts platform.NvidiaStressOptions, logFunc func(string)) (string, error) {
+		return a.RunNvidiaStressPackCtx(ctx, baseDir, opts, logFunc)
+	}
+	runAMDStressPackCtx = func(a *app.App, ctx context.Context, baseDir string, durationSec int, logFunc func(string)) (string, error) {
+		return a.RunAMDStressPackCtx(ctx, baseDir, durationSec, logFunc)
+	}
+	runMemoryStressPackCtx = func(a *app.App, ctx context.Context, baseDir string, durationSec int, logFunc func(string)) (string, error) {
+		return a.RunMemoryStressPackCtx(ctx, baseDir, durationSec, logFunc)
+	}
+	runSATStressPackCtx = func(a *app.App, ctx context.Context, baseDir string, durationSec int, logFunc func(string)) (string, error) {
+		return a.RunSATStressPackCtx(ctx, baseDir, durationSec, logFunc)
+	}
+)
+
+// enqueue adds a task to the queue and notifies the worker.
+func (q *taskQueue) enqueue(t *Task) {
+	q.mu.Lock()
+	q.assignTaskLogPathLocked(t)
+	q.tasks = append(q.tasks, t)
+	q.prune()
+	q.persistLocked()
+	q.mu.Unlock()
+	select {
+	case q.trigger <- struct{}{}:
+	default:
+	}
+}
+
+// prune removes oldest completed tasks beyond maxTaskHistory.
+func (q *taskQueue) prune() {
+	var done []*Task
+	var active []*Task
+	for _, t := range q.tasks {
+		switch t.Status {
+		case TaskDone, TaskFailed, TaskCancelled:
+			done = append(done, t)
+		default:
+			active = append(active, t)
+		}
+	}
+	if len(done) > maxTaskHistory {
+		done = done[len(done)-maxTaskHistory:]
+	}
+	q.tasks = append(active, done...)
+}
+
+// nextPending returns the highest-priority pending task (nil if none).
+func (q *taskQueue) nextPending() *Task {
+	var best *Task
+	for _, t := range q.tasks {
+		if t.Status != TaskPending {
+			continue
+		}
+		if best == nil || t.Priority > best.Priority ||
+			(t.Priority == best.Priority && t.CreatedAt.Before(best.CreatedAt)) {
+			best = t
+		}
+	}
+	return best
+}
+
+// findByID looks up a task by ID.
+func (q *taskQueue) findByID(id string) (*Task, bool) {
+	q.mu.Lock()
+	defer q.mu.Unlock()
+	for _, t := range q.tasks {
+		if t.ID == id {
+			return t, true
+		}
+	}
+	return nil, false
+}
+
+// findJob returns the jobState for a task ID (for SSE streaming compatibility).
+func (q *taskQueue) findJob(id string) (*jobState, bool) {
+	t, ok := q.findByID(id)
+	if !ok || t.job == nil {
+		return nil, false
+	}
+	return t.job, true
+}
+
+func (q *taskQueue) hasActiveTarget(target string) bool {
+	q.mu.Lock()
+	defer q.mu.Unlock()
+	for _, t := range q.tasks {
+		if t.Target != target {
+			continue
+		}
+		if t.Status == TaskPending || t.Status == TaskRunning {
+			return true
+		}
+	}
+	return false
+}
+
+// snapshot returns a copy of all tasks sorted for display (running first, then pending by priority, then done by doneAt desc).
+func (q *taskQueue) snapshot() []Task {
+	q.mu.Lock()
+	defer q.mu.Unlock()
+	out := make([]Task, len(q.tasks))
+	for i, t := range q.tasks {
+		out[i] = *t
+	}
+	sort.SliceStable(out, func(i, j int) bool {
+		si := statusOrder(out[i].Status)
+		sj := statusOrder(out[j].Status)
+		if si != sj {
+			return si < sj
+		}
+		if out[i].Priority != out[j].Priority {
+			return out[i].Priority > out[j].Priority
+		}
+		return out[i].CreatedAt.Before(out[j].CreatedAt)
+	})
+	return out
+}
+
+func statusOrder(s string) int {
+	switch s {
+	case TaskRunning:
+		return 0
+	case TaskPending:
+		return 1
+	default:
+		return 2
+	}
+}
+
+// startWorker launches the queue runner goroutine.
+func (q *taskQueue) startWorker(opts *HandlerOptions) {
+	q.mu.Lock()
+	q.opts = opts
+	q.statePath = filepath.Join(opts.ExportDir, "tasks-state.json")
+	q.logsDir = filepath.Join(opts.ExportDir, "tasks")
+	_ = os.MkdirAll(q.logsDir, 0755)
+	if !q.started {
+		q.loadLocked()
+		q.started = true
+		go q.worker()
+	}
+	hasPending := q.nextPending() != nil
+	q.mu.Unlock()
+	if hasPending {
+		select {
+		case q.trigger <- struct{}{}:
+		default:
+		}
+	}
+}
+
+func (q *taskQueue) worker() {
+	for {
+		<-q.trigger
+		setCPUGovernor("performance")
+		for {
+			q.mu.Lock()
+			t := q.nextPending()
+			if t == nil {
+				q.mu.Unlock()
+				break
+			}
+			now := time.Now()
+			t.Status = TaskRunning
+			t.StartedAt = &now
+			t.DoneAt = nil
+			t.ErrMsg = ""
+			j := newTaskJobState(t.LogPath)
+			ctx, cancel := context.WithCancel(context.Background())
+			j.cancel = cancel
+			t.job = j
+			q.persistLocked()
+			q.mu.Unlock()
+
+			q.runTask(t, j, ctx)
+
+			q.mu.Lock()
+			now2 := time.Now()
+			t.DoneAt = &now2
+			if t.Status == TaskRunning { // not cancelled externally
+				if j.err != "" {
+					t.Status = TaskFailed
+					t.ErrMsg = j.err
+				} else {
+					t.Status = TaskDone
+				}
+			}
+			q.prune()
+			q.persistLocked()
+			q.mu.Unlock()
+		}
+		setCPUGovernor("powersave")
+	}
+}
+
+// setCPUGovernor writes the given governor to all CPU scaling_governor sysfs files.
+// Silently ignores errors (e.g. when cpufreq is not available).
+func setCPUGovernor(governor string) {
+	matches, err := filepath.Glob("/sys/devices/system/cpu/cpu*/cpufreq/scaling_governor")
+	if err != nil || len(matches) == 0 {
+		return
+	}
+	for _, path := range matches {
+		_ = os.WriteFile(path, []byte(governor), 0644)
+	}
+}
+
+// runTask executes the work for a task, writing output to j.
+func (q *taskQueue) runTask(t *Task, j *jobState, ctx context.Context) {
+	if q.opts == nil || q.opts.App == nil {
+		j.append("ERROR: app not configured")
+		j.finish("app not configured")
+		return
+	}
+	a := q.opts.App
+
+	j.append(fmt.Sprintf("Starting %s...", t.Name))
+	if len(j.lines) > 0 {
+		j.append(fmt.Sprintf("Recovered after bee-web restart at %s", time.Now().UTC().Format(time.RFC3339)))
+	}
+
+	var (
+		archive string
+		err     error
+	)
+
+	switch t.Target {
+	case "nvidia":
+		diagLevel := t.params.DiagLevel
+		if t.params.BurnProfile != "" && diagLevel <= 0 {
+			diagLevel = resolveBurnPreset(t.params.BurnProfile).NvidiaDiag
+		}
+		if len(t.params.GPUIndices) > 0 || diagLevel > 0 {
+			result, e := a.RunNvidiaAcceptancePackWithOptions(
+				ctx, "", diagLevel, t.params.GPUIndices, j.append,
+			)
+			if e != nil {
+				err = e
+			} else {
+				archive = result.Body
+			}
+		} else {
+			archive, err = a.RunNvidiaAcceptancePack("", j.append)
+		}
+	case "nvidia-stress":
+		dur := t.params.Duration
+		if t.params.BurnProfile != "" && dur <= 0 {
+			dur = resolveBurnPreset(t.params.BurnProfile).DurationSec
+		}
+		archive, err = runNvidiaStressPackCtx(a, ctx, "", platform.NvidiaStressOptions{
+			DurationSec:       dur,
+			Loader:            t.params.Loader,
+			GPUIndices:        t.params.GPUIndices,
+			ExcludeGPUIndices: t.params.ExcludeGPUIndices,
+		}, j.append)
+	case "memory":
+		archive, err = runMemoryAcceptancePackCtx(a, ctx, "", j.append)
+	case "storage":
+		archive, err = runStorageAcceptancePackCtx(a, ctx, "", j.append)
+	case "cpu":
+		dur := t.params.Duration
+		if t.params.BurnProfile != "" && dur <= 0 {
+			dur = resolveBurnPreset(t.params.BurnProfile).DurationSec
+		}
+		if dur <= 0 {
+			dur = 60
+		}
+		j.append(fmt.Sprintf("CPU stress duration: %ds", dur))
+		archive, err = runCPUAcceptancePackCtx(a, ctx, "", dur, j.append)
+	case "amd":
+		archive, err = runAMDAcceptancePackCtx(a, ctx, "", j.append)
+	case "amd-mem":
+		archive, err = runAMDMemIntegrityPackCtx(a, ctx, "", j.append)
+	case "amd-bandwidth":
+		archive, err = runAMDMemBandwidthPackCtx(a, ctx, "", j.append)
+	case "amd-stress":
+		dur := t.params.Duration
+		if t.params.BurnProfile != "" && dur <= 0 {
+			dur = resolveBurnPreset(t.params.BurnProfile).DurationSec
+		}
+		archive, err = runAMDStressPackCtx(a, ctx, "", dur, j.append)
+	case "memory-stress":
+		dur := t.params.Duration
+		if t.params.BurnProfile != "" && dur <= 0 {
+			dur = resolveBurnPreset(t.params.BurnProfile).DurationSec
+		}
+		archive, err = runMemoryStressPackCtx(a, ctx, "", dur, j.append)
+	case "sat-stress":
+		dur := t.params.Duration
+		if t.params.BurnProfile != "" && dur <= 0 {
+			dur = resolveBurnPreset(t.params.BurnProfile).DurationSec
+		}
+		archive, err = runSATStressPackCtx(a, ctx, "", dur, j.append)
+	case "platform-stress":
+		opts := resolvePlatformStressPreset(t.params.BurnProfile)
+		archive, err = a.RunPlatformStress(ctx, "", opts, j.append)
+	case "audit":
+		result, e := a.RunAuditNow(q.opts.RuntimeMode)
+		if e != nil {
+			err = e
+		} else {
+			for _, line := range splitLines(result.Body) {
+				j.append(line)
+			}
+		}
+	case "install-to-ram":
+		err = a.RunInstallToRAM(ctx, j.append)
+	default:
+		j.append("ERROR: unknown target: " + t.Target)
+		j.finish("unknown target")
+		return
+	}
+
+	if err != nil {
+		if ctx.Err() != nil {
+			j.append("Aborted.")
+			j.finish("aborted")
+		} else {
+			j.append("ERROR: " + err.Error())
+			j.finish(err.Error())
+		}
+		return
+	}
+	if archive != "" {
+		j.append("Archive: " + archive)
+	}
+	j.finish("")
+}
+
+func splitLines(s string) []string {
+	var out []string
+	for _, l := range splitNL(s) {
+		if l != "" {
+			out = append(out, l)
+		}
+	}
+	return out
+}
+
+func splitNL(s string) []string {
+	var out []string
+	start := 0
+	for i, c := range s {
+		if c == '\n' {
+			out = append(out, s[start:i])
+			start = i + 1
+		}
+	}
+	out = append(out, s[start:])
+	return out
+}
+
+// ── HTTP handlers ─────────────────────────────────────────────────────────────
+
+func (h *handler) handleAPITasksList(w http.ResponseWriter, _ *http.Request) {
+	tasks := globalQueue.snapshot()
+	writeJSON(w, tasks)
+}
+
+func (h *handler) handleAPITasksCancel(w http.ResponseWriter, r *http.Request) {
+	id := r.PathValue("id")
+	t, ok := globalQueue.findByID(id)
+	if !ok {
+		writeError(w, http.StatusNotFound, "task not found")
+		return
+	}
+	globalQueue.mu.Lock()
+	defer globalQueue.mu.Unlock()
+	switch t.Status {
+	case TaskPending:
+		t.Status = TaskCancelled
+		now := time.Now()
+		t.DoneAt = &now
+		globalQueue.persistLocked()
+		writeJSON(w, map[string]string{"status": "cancelled"})
+	case TaskRunning:
+		if t.job != nil {
+			t.job.abort()
+		}
+		t.Status = TaskCancelled
+		now := time.Now()
+		t.DoneAt = &now
+		globalQueue.persistLocked()
+		writeJSON(w, map[string]string{"status": "cancelled"})
+	default:
+		writeError(w, http.StatusConflict, "task is not running or pending")
+	}
+}
+
+func (h *handler) handleAPITasksPriority(w http.ResponseWriter, r *http.Request) {
+	id := r.PathValue("id")
+	t, ok := globalQueue.findByID(id)
+	if !ok {
+		writeError(w, http.StatusNotFound, "task not found")
+		return
+	}
+	var req struct {
+		Delta int `json:"delta"`
+	}
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+		writeError(w, http.StatusBadRequest, "invalid body")
+		return
+	}
+	globalQueue.mu.Lock()
+	defer globalQueue.mu.Unlock()
+	if t.Status != TaskPending {
+		writeError(w, http.StatusConflict, "only pending tasks can be reprioritised")
+		return
+	}
+	t.Priority += req.Delta
+	globalQueue.persistLocked()
+	writeJSON(w, map[string]int{"priority": t.Priority})
+}
+
+func (h *handler) handleAPITasksCancelAll(w http.ResponseWriter, _ *http.Request) {
+	globalQueue.mu.Lock()
+	now := time.Now()
+	n := 0
+	for _, t := range globalQueue.tasks {
+		switch t.Status {
+		case TaskPending:
+			t.Status = TaskCancelled
+			t.DoneAt = &now
+			n++
+		case TaskRunning:
+			if t.job != nil {
+				t.job.abort()
+			}
+			t.Status = TaskCancelled
+			t.DoneAt = &now
+			n++
+		}
+	}
+	globalQueue.persistLocked()
+	globalQueue.mu.Unlock()
+	writeJSON(w, map[string]int{"cancelled": n})
+}
+
+func (h *handler) handleAPITasksStream(w http.ResponseWriter, r *http.Request) {
+	id := r.PathValue("id")
+	// Wait up to 5s for the task to get a job (it may be pending)
+	deadline := time.Now().Add(5 * time.Second)
+	var j *jobState
+	for time.Now().Before(deadline) {
+		if jj, ok := globalQueue.findJob(id); ok {
+			j = jj
+			break
+		}
+		time.Sleep(200 * time.Millisecond)
+	}
+	if j == nil {
+		http.Error(w, "task not found or not yet started", http.StatusNotFound)
+		return
+	}
+	streamJob(w, r, j)
+}
+
+func (q *taskQueue) assignTaskLogPathLocked(t *Task) {
+	if t.LogPath != "" || q.logsDir == "" || t.ID == "" {
+		return
+	}
+	t.LogPath = filepath.Join(q.logsDir, t.ID+".log")
+}
+
+func (q *taskQueue) loadLocked() {
+	if q.statePath == "" {
+		return
+	}
+	data, err := os.ReadFile(q.statePath)
+	if err != nil || len(data) == 0 {
+		return
+	}
+	var persisted []persistedTask
+	if err := json.Unmarshal(data, &persisted); err != nil {
+		return
+	}
+	for _, pt := range persisted {
+		t := &Task{
+			ID:        pt.ID,
+			Name:      pt.Name,
+			Target:    pt.Target,
+			Priority:  pt.Priority,
+			Status:    pt.Status,
+			CreatedAt: pt.CreatedAt,
+			StartedAt: pt.StartedAt,
+			DoneAt:    pt.DoneAt,
+			ErrMsg:    pt.ErrMsg,
+			LogPath:   pt.LogPath,
+			params:    pt.Params,
+		}
+		q.assignTaskLogPathLocked(t)
+		if t.Status == TaskPending || t.Status == TaskRunning {
+			t.Status = TaskPending
+			t.DoneAt = nil
+			t.ErrMsg = ""
+		}
+		q.tasks = append(q.tasks, t)
+	}
+	q.prune()
+	q.persistLocked()
+}
+
+func (q *taskQueue) persistLocked() {
+	if q.statePath == "" {
+		return
+	}
+	state := make([]persistedTask, 0, len(q.tasks))
+	for _, t := range q.tasks {
+		state = append(state, persistedTask{
+			ID:        t.ID,
+			Name:      t.Name,
+			Target:    t.Target,
+			Priority:  t.Priority,
+			Status:    t.Status,
+			CreatedAt: t.CreatedAt,
+			StartedAt: t.StartedAt,
+			DoneAt:    t.DoneAt,
+			ErrMsg:    t.ErrMsg,
+			LogPath:   t.LogPath,
+			Params:    t.params,
+		})
+	}
+	data, err := json.MarshalIndent(state, "", "  ")
+	if err != nil {
+		return
+	}
+	tmp := q.statePath + ".tmp"
+	if err := os.WriteFile(tmp, data, 0644); err != nil {
+		return
+	}
+	_ = os.Rename(tmp, q.statePath)
+}

audit/internal/webui/tasks_test.go

@@ -0,0 +1,204 @@
+package webui
+
+import (
+	"context"
+	"os"
+	"path/filepath"
+	"testing"
+	"time"
+
+	"bee/audit/internal/app"
+)
+
+func TestTaskQueuePersistsAndRecoversPendingTasks(t *testing.T) {
+	dir := t.TempDir()
+	q := &taskQueue{
+		statePath: filepath.Join(dir, "tasks-state.json"),
+		logsDir:   filepath.Join(dir, "tasks"),
+		trigger:   make(chan struct{}, 1),
+	}
+	if err := os.MkdirAll(q.logsDir, 0755); err != nil {
+		t.Fatal(err)
+	}
+
+	started := time.Now().Add(-time.Minute)
+	task := &Task{
+		ID:        "task-1",
+		Name:      "Memory Burn-in",
+		Target:    "memory-stress",
+		Priority:  2,
+		Status:    TaskRunning,
+		CreatedAt: time.Now().Add(-2 * time.Minute),
+		StartedAt: &started,
+		params: taskParams{
+			Duration:    300,
+			BurnProfile: "smoke",
+		},
+	}
+	q.tasks = append(q.tasks, task)
+	q.assignTaskLogPathLocked(task)
+	q.persistLocked()
+
+	recovered := &taskQueue{
+		statePath: q.statePath,
+		logsDir:   q.logsDir,
+		trigger:   make(chan struct{}, 1),
+	}
+	recovered.loadLocked()
+
+	if len(recovered.tasks) != 1 {
+		t.Fatalf("tasks=%d want 1", len(recovered.tasks))
+	}
+	got := recovered.tasks[0]
+	if got.Status != TaskPending {
+		t.Fatalf("status=%q want %q", got.Status, TaskPending)
+	}
+	if got.params.Duration != 300 || got.params.BurnProfile != "smoke" {
+		t.Fatalf("params=%+v", got.params)
+	}
+	if got.LogPath == "" {
+		t.Fatal("expected log path")
+	}
+}
+
+func TestNewTaskJobStateLoadsExistingLog(t *testing.T) {
+	dir := t.TempDir()
+	path := filepath.Join(dir, "task.log")
+	if err := os.WriteFile(path, []byte("line1\nline2\n"), 0644); err != nil {
+		t.Fatal(err)
+	}
+
+	j := newTaskJobState(path)
+	existing, ch := j.subscribe()
+	if ch == nil {
+		t.Fatal("expected live subscription channel")
+	}
+	if len(existing) != 2 || existing[0] != "line1" || existing[1] != "line2" {
+		t.Fatalf("existing=%v", existing)
+	}
+}
+
+func TestResolveBurnPreset(t *testing.T) {
+	tests := []struct {
+		profile string
+		want    burnPreset
+	}{
+		{profile: "smoke", want: burnPreset{NvidiaDiag: 1, DurationSec: 5 * 60}},
+		{profile: "acceptance", want: burnPreset{NvidiaDiag: 3, DurationSec: 60 * 60}},
+		{profile: "overnight", want: burnPreset{NvidiaDiag: 4, DurationSec: 8 * 60 * 60}},
+		{profile: "", want: burnPreset{NvidiaDiag: 1, DurationSec: 5 * 60}},
+	}
+	for _, tc := range tests {
+		if got := resolveBurnPreset(tc.profile); got != tc.want {
+			t.Fatalf("resolveBurnPreset(%q)=%+v want %+v", tc.profile, got, tc.want)
+		}
+	}
+}
+
+func TestTaskDisplayNameUsesNvidiaStressLoader(t *testing.T) {
+	tests := []struct {
+		loader string
+		want   string
+	}{
+		{loader: "", want: "NVIDIA GPU Stress (bee-gpu-burn)"},
+		{loader: "builtin", want: "NVIDIA GPU Stress (bee-gpu-burn)"},
+		{loader: "john", want: "NVIDIA GPU Stress (John/OpenCL)"},
+		{loader: "nccl", want: "NVIDIA GPU Stress (NCCL)"},
+	}
+	for _, tc := range tests {
+		if got := taskDisplayName("nvidia-stress", "acceptance", tc.loader); got != tc.want {
+			t.Fatalf("taskDisplayName(loader=%q)=%q want %q", tc.loader, got, tc.want)
+		}
+	}
+}
+
+func TestRunTaskHonorsCancel(t *testing.T) {
+	t.Parallel()
+
+	blocked := make(chan struct{})
+	released := make(chan struct{})
+	aRun := func(_ any, ctx context.Context, _ string, _ int, _ func(string)) (string, error) {
+		close(blocked)
+		select {
+		case <-ctx.Done():
+			close(released)
+			return "", ctx.Err()
+		case <-time.After(5 * time.Second):
+			close(released)
+			return "unexpected", nil
+		}
+	}
+
+	q := &taskQueue{
+		opts: &HandlerOptions{App: &app.App{}},
+	}
+	tk := &Task{
+		ID:        "cpu-1",
+		Name:      "CPU SAT",
+		Target:    "cpu",
+		Status:    TaskRunning,
+		CreatedAt: time.Now(),
+		params:    taskParams{Duration: 60},
+	}
+	j := &jobState{}
+	ctx, cancel := context.WithCancel(context.Background())
+	j.cancel = cancel
+	tk.job = j
+
+	orig := runCPUAcceptancePackCtx
+	runCPUAcceptancePackCtx = func(_ *app.App, ctx context.Context, baseDir string, durationSec int, logFunc func(string)) (string, error) {
+		return aRun(nil, ctx, baseDir, durationSec, logFunc)
+	}
+	defer func() { runCPUAcceptancePackCtx = orig }()
+
+	done := make(chan struct{})
+	go func() {
+		q.runTask(tk, j, ctx)
+		close(done)
+	}()
+
+	<-blocked
+	j.abort()
+
+	select {
+	case <-released:
+	case <-time.After(2 * time.Second):
+		t.Fatal("task did not observe cancel")
+	}
+	select {
+	case <-done:
+	case <-time.After(2 * time.Second):
+		t.Fatal("runTask did not return after cancel")
+	}
+}
+
+func TestRunTaskUsesBurnProfileDurationForCPU(t *testing.T) {
+	t.Parallel()
+
+	var gotDuration int
+	q := &taskQueue{
+		opts: &HandlerOptions{App: &app.App{}},
+	}
+	tk := &Task{
+		ID:        "cpu-burn-1",
+		Name:      "CPU Burn-in",
+		Target:    "cpu",
+		Status:    TaskRunning,
+		CreatedAt: time.Now(),
+		params:    taskParams{BurnProfile: "smoke"},
+	}
+	j := &jobState{}
+
+	orig := runCPUAcceptancePackCtx
+	runCPUAcceptancePackCtx = func(_ *app.App, _ context.Context, _ string, durationSec int, _ func(string)) (string, error) {
+		gotDuration = durationSec
+		return "/tmp/cpu-burn.tar.gz", nil
+	}
+	defer func() { runCPUAcceptancePackCtx = orig }()
+
+	q.runTask(tk, j, context.Background())
+
+	if gotDuration != 5*60 {
+		t.Fatalf("duration=%d want %d", gotDuration, 5*60)
+	}
+}

bible-local/architecture/runtime-flows.md

@@ -81,9 +81,9 @@ build-in-container.sh [--authorized-keys /path/to/keys]
   7. `build-cublas.sh`:
        a. download `libcublas`, `libcublasLt`, `libcudart` runtime + dev packages from the NVIDIA CUDA Debian repo
        b. verify packages against repo `Packages.gz`
-       c. extract headers for `bee-gpu-stress` build
+       c. extract headers for `bee-gpu-burn` worker build
        d. cache userspace libs in `dist/cublas-<version>+cuda<series>/`
-  8. build `bee-gpu-stress` against extracted cuBLASLt/cudart headers
+  8. build `bee-gpu-burn` worker against extracted cuBLASLt/cudart headers
   9. inject NVIDIA `.ko` → staged `/usr/local/lib/nvidia/`
   10. inject `nvidia-smi` → staged `/usr/local/bin/nvidia-smi`
   11. inject `libnvidia-ml` + `libcuda` + `libcublas` + `libcublasLt` + `libcudart` → staged `/usr/lib/`
@@ -104,7 +104,7 @@ Build host notes:
   1. `build-in-container.sh` / `build-nvidia-module.sh` — Debian kernel headers for module build
   2. `auto/config` — `linux-image-${DEBIAN_KERNEL_ABI}` in the ISO
 - NVIDIA modules go to staged `usr/local/lib/nvidia/` — NOT to `/lib/modules/<kver>/extra/`.
-- `bee-gpu-stress` must be built against cached CUDA userspace headers from `build-cublas.sh`, not against random host-installed CUDA headers.
+- `bee-gpu-burn` worker must be built against cached CUDA userspace headers from `build-cublas.sh`, not against random host-installed CUDA headers.
 - The live ISO must ship `libcublas`, `libcublasLt`, and `libcudart` together with `libcuda` so tensor-core stress works without internet or package installs at boot.
 - The source overlay in `iso/overlay/` is treated as immutable source. Build-time files are injected only into the staged overlay.
 - The live-build workdir under `dist/` is disposable; source files under `iso/builder/` stay clean.
@@ -153,18 +153,17 @@ Current validation state:
 Every collector returns `nil, nil` on tool-not-found. Errors are logged, never fatal.
 
 Acceptance flows:
-- `bee sat nvidia` → diagnostic archive with `nvidia-smi -q` + `nvidia-bug-report` + mixed-precision `bee-gpu-stress`
+- `bee sat nvidia` → diagnostic archive with `nvidia-smi -q` + `nvidia-bug-report` + lightweight `bee-gpu-burn`
+- NVIDIA GPU burn-in can use either `bee-gpu-burn` or `bee-john-gpu-stress` (John the Ripper jumbo via OpenCL)
 - `bee sat memory` → `memtester` archive
 - `bee sat storage` → SMART/NVMe diagnostic archive and short self-test trigger where supported
 - SAT `summary.txt` now includes `overall_status` and per-job `*_status` values (`OK`, `FAILED`, `UNSUPPORTED`)
-- `bee-gpu-stress` should prefer cuBLASLt GEMM load over the old integer/PTX burn path:
+- `bee-gpu-burn` should prefer cuBLASLt GEMM load over the old integer/PTX burn path:
   - Ampere: `fp16` + `fp32`/TF32 tensor-core load
   - Ada / Hopper: add `fp8`
   - Blackwell+: add `fp4`
   - PTX fallback is only for missing cuBLASLt/userspace or unsupported narrow datatypes
 - Runtime overrides:
-  - `BEE_GPU_STRESS_SECONDS`
-  - `BEE_GPU_STRESS_SIZE_MB`
   - `BEE_MEMTESTER_SIZE_MB`
   - `BEE_MEMTESTER_PASSES`
 
@@ -179,6 +178,6 @@ Web UI: Acceptance Tests page → Run Test button
 ```
 
 **Critical invariants:**
-- `bee-gpu-stress` uses `exec.CommandContext` — killed on job context cancel.
+- `bee-gpu-burn` / `bee-john-gpu-stress` use `exec.CommandContext` — killed on job context cancel.
 - Metric goroutine uses stopCh/doneCh pattern; main goroutine waits `<-doneCh` before reading rows (no mutex needed).
 - SVG chart is fully offline: no JS, no external CSS, pure inline SVG.

bible-local/architecture/system-overview.md

@@ -21,8 +21,8 @@ Fills gaps where Redfish/logpile is blind:
 - Read-only hardware inventory: board, CPU, memory, storage, PCIe, PSU, GPU, NIC, RAID
 - Machine-readable health summary derived from collector verdicts
 - Operator-triggered acceptance tests for NVIDIA, memory, and storage
-- NVIDIA SAT includes both diagnostic collection and mixed-precision GPU stress via `bee-gpu-stress`
-- `bee-gpu-stress` should exercise tensor/inference paths (`fp16`, `fp32`/TF32, `fp8`, `fp4` when supported by the GPU/userspace stack) and fall back to Driver API PTX burn only if cuBLASLt is unavailable
+- NVIDIA SAT includes diagnostic collection plus a lightweight in-image GPU stress step via `bee-gpu-burn`
+- `bee-gpu-burn` should exercise tensor/inference paths (`fp16`, `fp32`/TF32, `fp8`, `fp4` when supported by the GPU/userspace stack) and fall back to Driver API PTX burn only if cuBLASLt is unavailable
 - Automatic boot audit with operator-facing local console and SSH access
 - NVIDIA proprietary driver loaded at boot for GPU enrichment via `nvidia-smi`
 - SSH access (OpenSSH) always available for inspection and debugging
@@ -70,7 +70,7 @@ Fills gaps where Redfish/logpile is blind:
 | SSH | OpenSSH server |
 | NVIDIA driver | Proprietary `.run` installer, built against Debian kernel headers |
 | NVIDIA modules | Loaded via `insmod` from `/usr/local/lib/nvidia/` |
-| GPU stress backend | `bee-gpu-stress` + cuBLASLt/cuBLAS/cudart mixed-precision GEMM, with Driver API PTX fallback |
+| GPU stress backend | `bee-gpu-burn` + cuBLASLt/cuBLAS/cudart mixed-precision GEMM, with Driver API PTX fallback |
 | Builder | Debian 12 host/VM or Debian 12 container image |
 
 ## Operator UX

bible-local/decisions/2026-03-05-nvidia-proprietary-driver.md

@@ -18,6 +18,8 @@ Use the official proprietary NVIDIA `.run` installer for both kernel modules and
 - Kernel modules and nvidia-smi come from a single verified source.
 - NVIDIA publishes `.sha256sum` alongside each installer — download and verify before use.
 - Driver version pinned in `iso/builder/VERSIONS` as `NVIDIA_DRIVER_VERSION`.
+- DCGM must track the CUDA user-mode driver major version exposed by `nvidia-smi`.
+- For NVIDIA driver branch `590` with CUDA `13.x`, use DCGM 4 package family `datacenter-gpu-manager-4-cuda13`; legacy `datacenter-gpu-manager` 3.x does not provide a working path for this stack.
 - Build process: download `.run`, extract, compile `kernel/` sources against `linux-lts-dev`.
 - Modules cached in `dist/nvidia-<version>-<kver>/` — rebuild only on version or kernel change.
 - ISO size increases by ~50MB for .ko files + nvidia-smi.

bible-local/docs/iso-build-rules.md

@@ -0,0 +1,22 @@
+# ISO Build Rules
+
+## Verify package names before use
+
+ISO builds take 30–60 minutes. A wrong package name wastes an entire build cycle.
+
+**Rule: before adding any Debian package name to the ISO config, verify it exists and check its file list.**
+
+Use one of:
+- `https://packages.debian.org/bookworm/<package-name>` — existence + description
+- `https://packages.debian.org/bookworm/amd64/<package-name>/filelist` — exact files installed
+- `apt-cache show <package>` inside a Debian bookworm container
+
+This applies to:
+- `iso/builder/config/package-lists/*.list.chroot`
+- Any package referenced in bootloader configs, hooks, or overlay scripts
+
+## Memtest rule
+
+Prefer live-build's built-in memtest integration over custom hooks or hardcoded
+bootloader paths. If you ever need to reference memtest files manually, verify
+the exact package file list first for the target Debian release.

bible-local/docs/validate-vs-burn.md

@@ -0,0 +1,35 @@
+# Validate vs Burn: Hardware Impact Policy
+
+## Validate Tests (non-destructive)
+
+Tests on the **Validate** page are purely diagnostic. They:
+
+- **Do not write to disks** — no data is written to storage devices; SMART counters (power-on hours, load cycle count, reallocated sectors) are not incremented.
+- **Do not run sustained high load** — commands complete quickly (seconds to minutes) and do not push hardware to thermal or electrical limits.
+- **Do not increment hardware wear counters** — GPU memory ECC counters, NVMe wear leveling counters, and similar endurance metrics are unaffected.
+- **Are safe to run repeatedly** — on new, production-bound, or already-deployed hardware without concern for reducing lifespan.
+
+### What Validate tests actually do
+
+| Test | What it runs |
+|---|---|
+| NVIDIA GPU | `nvidia-smi`, `dcgmi diag` (levels 1–4 read-only diagnostics) |
+| Memory | `memtester` on a limited allocation; reads/writes to RAM only |
+| Storage | `smartctl -a`, `nvme smart-log` — reads SMART data only |
+| CPU | `stress-ng` for a bounded duration; CPU-only, no I/O |
+| AMD GPU | `rocm-smi --showallinfo`, `dmidecode` — read-only queries |
+
+## Burn Tests (hardware wear)
+
+Tests on the **Burn** page run hardware at maximum or near-maximum load for extended durations. They:
+
+- **Wear storage**: write-intensive patterns can reduce SSD endurance (P/E cycles).
+- **Stress GPU memory**: extended ECC stress tests may surface latent defects but also exercise memory cells.
+- **Accelerate thermal cycling**: repeated heat/cool cycles degrade solder joints and capacitors over time.
+- **May increment wear counters**: GPU power-on hours, NVMe media wear indicator, and similar metrics will advance.
+
+### Rule
+
+> Run **Validate** freely on any server, at any time, before or after deployment.
+> Run **Burn** only when explicitly required (e.g., initial acceptance after repair, or per customer SLA).
+> Document when and why Burn tests were run.

iso/README.md

@@ -48,6 +48,7 @@ sh iso/builder/build-in-container.sh --cache-dir /path/to/cache
 - The builder image is automatically rebuilt if the local tag exists for the wrong architecture.
 - The live ISO boots with Debian `live-boot` `toram`, so the read-only medium is copied into RAM during boot and the runtime no longer depends on the original USB/BMC virtual media staying present.
 - Target systems need enough RAM for the full compressed live medium plus normal runtime overhead, or boot may fail before reaching the TUI.
+- The NVIDIA variant installs DCGM 4 packages matched to the CUDA user-mode driver major version. For driver branch `590` / CUDA `13.x`, the package family is `datacenter-gpu-manager-4-cuda13` rather than legacy `datacenter-gpu-manager`.
 - Override the container platform only if you know why:
 
 ```sh

iso/builder/Dockerfile

@@ -23,6 +23,16 @@ RUN apt-get update -qq && apt-get install -y \
     gcc \
     make \
     perl \
+    pkg-config \
+    yasm \
+    libssl-dev \
+    zlib1g-dev \
+    libbz2-dev \
+    libgmp-dev \
+    libpcap-dev \
+    libsqlite3-dev \
+    libcurl4-openssl-dev \
+    ocl-icd-opencl-dev \
     linux-headers-amd64 \
     && rm -rf /var/lib/apt/lists/*
 

iso/builder/VERSIONS

@@ -8,8 +8,16 @@ NCCL_TESTS_VERSION=2.13.10
 NVCC_VERSION=12.8
 CUBLAS_VERSION=13.0.2.14-1
 CUDA_USERSPACE_VERSION=13.0.96-1
-DCGM_VERSION=3.3.9
+DCGM_VERSION=4.5.2-1
+JOHN_JUMBO_COMMIT=67fcf9fe5a
 ROCM_VERSION=6.3.4
 ROCM_SMI_VERSION=7.4.0.60304-76~22.04
+ROCM_BANDWIDTH_TEST_VERSION=1.4.0.60304-76~22.04
+ROCM_VALIDATION_SUITE_VERSION=1.1.0.60304-76~22.04
+ROCBLAS_VERSION=4.3.0.60304-76~22.04
+ROCRAND_VERSION=3.2.0.60304-76~22.04
+HIP_RUNTIME_AMD_VERSION=6.3.42134.60304-76~22.04
+HIPBLASLT_VERSION=0.10.0.60304-76~22.04
+COMGR_VERSION=2.8.0.60304-76~22.04
 GO_VERSION=1.24.0
 AUDIT_VERSION=1.0.0

iso/builder/auto/config

@@ -29,10 +29,10 @@ lb config noauto \
     --security true \
     --linux-flavours "amd64" \
     --linux-packages "${LB_LINUX_PACKAGES}" \
-    --memtest none \
-    --iso-volume "EASY-BEE" \
-    --iso-application "EASY-BEE" \
-    --bootappend-live "boot=live components nomodeset video=1920x1080 console=tty0 console=ttyS0,115200n8 loglevel=7 username=bee user-fullname=Bee modprobe.blacklist=nouveau" \
+    --memtest memtest86+ \
+    --iso-volume "EASY_BEE_${BEE_GPU_VENDOR_UPPER:-NVIDIA}" \
+    --iso-application "EASY-BEE-${BEE_GPU_VENDOR_UPPER:-NVIDIA}" \
+    --bootappend-live "boot=live components video=1920x1080 console=tty0 console=ttyS0,115200n8 loglevel=7 username=bee user-fullname=Bee modprobe.blacklist=nouveau" \
     --apt-recommends false \
     --chroot-squashfs-compression-type zstd \
     "${@}"

iso/builder/bee-gpu-stress.c

@@ -29,8 +29,14 @@ typedef void *CUfunction;
 typedef void *CUstream;
 
 #define CU_SUCCESS 0
+#define CU_DEVICE_ATTRIBUTE_MULTIPROCESSOR_COUNT 16
 #define CU_DEVICE_ATTRIBUTE_COMPUTE_CAPABILITY_MAJOR 75
 #define CU_DEVICE_ATTRIBUTE_COMPUTE_CAPABILITY_MINOR 76
+#define MAX_STRESS_STREAMS 16
+#define MAX_CUBLAS_PROFILES 5
+#define MIN_PROFILE_BUDGET_BYTES ((size_t)4u * 1024u * 1024u)
+#define MIN_STREAM_BUDGET_BYTES ((size_t)64u * 1024u * 1024u)
+#define STRESS_LAUNCH_DEPTH 8
 
 static const char *ptx_source =
     ".version 6.0\n"
@@ -97,6 +103,9 @@ typedef CUresult (*cuLaunchKernel_fn)(CUfunction,
                                       CUstream,
                                       void **,
                                       void **);
+typedef CUresult (*cuMemGetInfo_fn)(size_t *, size_t *);
+typedef CUresult (*cuStreamCreate_fn)(CUstream *, unsigned int);
+typedef CUresult (*cuStreamDestroy_fn)(CUstream);
 typedef CUresult (*cuGetErrorName_fn)(CUresult, const char **);
 typedef CUresult (*cuGetErrorString_fn)(CUresult, const char **);
 
@@ -118,6 +127,9 @@ struct cuda_api {
     cuModuleLoadDataEx_fn cuModuleLoadDataEx;
     cuModuleGetFunction_fn cuModuleGetFunction;
     cuLaunchKernel_fn cuLaunchKernel;
+    cuMemGetInfo_fn cuMemGetInfo;
+    cuStreamCreate_fn cuStreamCreate;
+    cuStreamDestroy_fn cuStreamDestroy;
     cuGetErrorName_fn cuGetErrorName;
     cuGetErrorString_fn cuGetErrorString;
 };
@@ -128,9 +140,10 @@ struct stress_report {
     int cc_major;
     int cc_minor;
     int buffer_mb;
+    int stream_count;
     unsigned long iterations;
     uint64_t checksum;
-    char details[1024];
+    char details[16384];
 };
 
 static int load_symbol(void *lib, const char *name, void **out) {
@@ -144,7 +157,7 @@ static int load_cuda(struct cuda_api *api) {
     if (!api->lib) {
         return 0;
     }
-    return
+    if (!(
         load_symbol(api->lib, "cuInit", (void **)&api->cuInit) &&
         load_symbol(api->lib, "cuDeviceGetCount", (void **)&api->cuDeviceGetCount) &&
         load_symbol(api->lib, "cuDeviceGet", (void **)&api->cuDeviceGet) &&
@@ -160,7 +173,17 @@ static int load_cuda(struct cuda_api *api) {
         load_symbol(api->lib, "cuMemcpyDtoH_v2", (void **)&api->cuMemcpyDtoH) &&
         load_symbol(api->lib, "cuModuleLoadDataEx", (void **)&api->cuModuleLoadDataEx) &&
         load_symbol(api->lib, "cuModuleGetFunction", (void **)&api->cuModuleGetFunction) &&
-        load_symbol(api->lib, "cuLaunchKernel", (void **)&api->cuLaunchKernel);
+        load_symbol(api->lib, "cuLaunchKernel", (void **)&api->cuLaunchKernel))) {
+        dlclose(api->lib);
+        memset(api, 0, sizeof(*api));
+        return 0;
+    }
+    load_symbol(api->lib, "cuMemGetInfo_v2", (void **)&api->cuMemGetInfo);
+    load_symbol(api->lib, "cuStreamCreate", (void **)&api->cuStreamCreate);
+    if (!load_symbol(api->lib, "cuStreamDestroy_v2", (void **)&api->cuStreamDestroy)) {
+        load_symbol(api->lib, "cuStreamDestroy", (void **)&api->cuStreamDestroy);
+    }
+    return 1;
 }
 
 static const char *cu_error_name(struct cuda_api *api, CUresult rc) {
@@ -193,14 +216,12 @@ static double now_seconds(void) {
     return (double)ts.tv_sec + ((double)ts.tv_nsec / 1000000000.0);
 }
 
-#if HAVE_CUBLASLT_HEADERS
 static size_t round_down_size(size_t value, size_t multiple) {
     if (multiple == 0 || value < multiple) {
         return value;
     }
     return value - (value % multiple);
 }
-#endif
 
 static int query_compute_capability(struct cuda_api *api, CUdevice dev, int *major, int *minor) {
     int cc_major = 0;
@@ -220,6 +241,75 @@ static int query_compute_capability(struct cuda_api *api, CUdevice dev, int *maj
     return 1;
 }
 
+static int query_multiprocessor_count(struct cuda_api *api, CUdevice dev, int *count) {
+    int mp_count = 0;
+    if (!check_rc(api,
+                  "cuDeviceGetAttribute(multiprocessors)",
+                  api->cuDeviceGetAttribute(&mp_count, CU_DEVICE_ATTRIBUTE_MULTIPROCESSOR_COUNT, dev))) {
+        return 0;
+    }
+    *count = mp_count;
+    return 1;
+}
+
+static size_t clamp_budget_to_free_memory(struct cuda_api *api, size_t requested_bytes) {
+    size_t free_bytes = 0;
+    size_t total_bytes = 0;
+    size_t max_bytes = requested_bytes;
+
+    if (!api->cuMemGetInfo) {
+        return requested_bytes;
+    }
+    if (api->cuMemGetInfo(&free_bytes, &total_bytes) != CU_SUCCESS || free_bytes == 0) {
+        return requested_bytes;
+    }
+
+    max_bytes = (free_bytes * 9u) / 10u;
+    if (max_bytes < (size_t)4u * 1024u * 1024u) {
+        max_bytes = (size_t)4u * 1024u * 1024u;
+    }
+    if (requested_bytes > max_bytes) {
+        return max_bytes;
+    }
+    return requested_bytes;
+}
+
+static int choose_stream_count(int mp_count, int planned_profiles, size_t total_budget, int have_streams) {
+    int stream_count = 1;
+    if (!have_streams || mp_count <= 0 || planned_profiles <= 0) {
+        return 1;
+    }
+
+    stream_count = mp_count / 8;
+    if (stream_count < 2) {
+        stream_count = 2;
+    }
+    if (stream_count > MAX_STRESS_STREAMS) {
+        stream_count = MAX_STRESS_STREAMS;
+    }
+
+    while (stream_count > 1) {
+        size_t per_stream_budget = total_budget / ((size_t)planned_profiles * (size_t)stream_count);
+        if (per_stream_budget >= MIN_STREAM_BUDGET_BYTES) {
+            break;
+        }
+        stream_count--;
+    }
+    return stream_count;
+}
+
+static void destroy_streams(struct cuda_api *api, CUstream *streams, int count) {
+    if (!api->cuStreamDestroy) {
+        return;
+    }
+    for (int i = 0; i < count; i++) {
+        if (streams[i]) {
+            api->cuStreamDestroy(streams[i]);
+            streams[i] = NULL;
+        }
+    }
+}
+
 #if HAVE_CUBLASLT_HEADERS
 static void append_detail(char *buf, size_t cap, const char *fmt, ...) {
     size_t len = strlen(buf);
@@ -242,12 +332,19 @@ static int run_ptx_fallback(struct cuda_api *api,
                             int size_mb,
                             struct stress_report *report) {
     CUcontext ctx = NULL;
-    CUdeviceptr device_mem = 0;
     CUmodule module = NULL;
     CUfunction kernel = NULL;
     uint32_t sample[256];
-    uint32_t words = 0;
+    CUdeviceptr device_mem[MAX_STRESS_STREAMS] = {0};
+    CUstream streams[MAX_STRESS_STREAMS] = {0};
+    uint32_t words[MAX_STRESS_STREAMS] = {0};
+    uint32_t rounds[MAX_STRESS_STREAMS] = {0};
+    void *params[MAX_STRESS_STREAMS][3];
+    size_t bytes_per_stream[MAX_STRESS_STREAMS] = {0};
     unsigned long iterations = 0;
+    int mp_count = 0;
+    int stream_count = 1;
+    int launches_per_wave = 0;
 
     memset(report, 0, sizeof(*report));
     snprintf(report->backend, sizeof(report->backend), "driver-ptx");
@@ -260,64 +357,109 @@ static int run_ptx_fallback(struct cuda_api *api,
         return 0;
     }
 
-    size_t bytes = (size_t)size_mb * 1024u * 1024u;
-    if (bytes < 4u * 1024u * 1024u) {
-        bytes = 4u * 1024u * 1024u;
+    size_t requested_bytes = (size_t)size_mb * 1024u * 1024u;
+    if (requested_bytes < MIN_PROFILE_BUDGET_BYTES) {
+        requested_bytes = MIN_PROFILE_BUDGET_BYTES;
     }
-    if (bytes > (size_t)1024u * 1024u * 1024u) {
-        bytes = (size_t)1024u * 1024u * 1024u;
+    size_t total_bytes = clamp_budget_to_free_memory(api, requested_bytes);
+    if (total_bytes < MIN_PROFILE_BUDGET_BYTES) {
+        total_bytes = MIN_PROFILE_BUDGET_BYTES;
     }
-    words = (uint32_t)(bytes / sizeof(uint32_t));
+    report->buffer_mb = (int)(total_bytes / (1024u * 1024u));
 
-    if (!check_rc(api, "cuMemAlloc", api->cuMemAlloc(&device_mem, bytes))) {
-        api->cuCtxDestroy(ctx);
-        return 0;
+    if (query_multiprocessor_count(api, dev, &mp_count) &&
+        api->cuStreamCreate &&
+        api->cuStreamDestroy) {
+        stream_count = choose_stream_count(mp_count, 1, total_bytes, 1);
     }
-    if (!check_rc(api, "cuMemsetD8", api->cuMemsetD8(device_mem, 0, bytes))) {
-        api->cuMemFree(device_mem);
-        api->cuCtxDestroy(ctx);
-        return 0;
+    if (stream_count > 1) {
+        int created = 0;
+        for (; created < stream_count; created++) {
+            if (!check_rc(api, "cuStreamCreate", api->cuStreamCreate(&streams[created], 0))) {
+                destroy_streams(api, streams, created);
+                stream_count = 1;
+                break;
+            }
+        }
     }
+    report->stream_count = stream_count;
+
+    for (int lane = 0; lane < stream_count; lane++) {
+        size_t slice = total_bytes / (size_t)stream_count;
+        if (lane == stream_count - 1) {
+            slice = total_bytes - ((size_t)lane * (total_bytes / (size_t)stream_count));
+        }
+        slice = round_down_size(slice, sizeof(uint32_t));
+        if (slice < MIN_PROFILE_BUDGET_BYTES) {
+            slice = MIN_PROFILE_BUDGET_BYTES;
+        }
+        bytes_per_stream[lane] = slice;
+        words[lane] = (uint32_t)(slice / sizeof(uint32_t));
+
+        if (!check_rc(api, "cuMemAlloc", api->cuMemAlloc(&device_mem[lane], slice))) {
+            goto fail;
+        }
+        if (!check_rc(api, "cuMemsetD8", api->cuMemsetD8(device_mem[lane], 0, slice))) {
+            goto fail;
+        }
+        rounds[lane] = 2048;
+        params[lane][0] = &device_mem[lane];
+        params[lane][1] = &words[lane];
+        params[lane][2] = &rounds[lane];
+    }
+
     if (!check_rc(api,
                   "cuModuleLoadDataEx",
                   api->cuModuleLoadDataEx(&module, ptx_source, 0, NULL, NULL))) {
-        api->cuMemFree(device_mem);
-        api->cuCtxDestroy(ctx);
-        return 0;
+        goto fail;
     }
     if (!check_rc(api, "cuModuleGetFunction", api->cuModuleGetFunction(&kernel, module, "burn"))) {
-        api->cuMemFree(device_mem);
-        api->cuCtxDestroy(ctx);
-        return 0;
+        goto fail;
     }
 
     unsigned int threads = 256;
-    unsigned int blocks = (unsigned int)((words + threads - 1) / threads);
-    uint32_t rounds = 1024;
-    void *params[] = {&device_mem, &words, &rounds};
 
     double start = now_seconds();
     double deadline = start + (double)seconds;
     while (now_seconds() < deadline) {
-        if (!check_rc(api,
-                      "cuLaunchKernel",
-                      api->cuLaunchKernel(kernel, blocks, 1, 1, threads, 1, 1, 0, NULL, params, NULL))) {
-            api->cuMemFree(device_mem);
-            api->cuCtxDestroy(ctx);
-            return 0;
+        launches_per_wave = 0;
+        for (int depth = 0; depth < STRESS_LAUNCH_DEPTH && now_seconds() < deadline; depth++) {
+            int launched_this_batch = 0;
+            for (int lane = 0; lane < stream_count; lane++) {
+                unsigned int blocks = (unsigned int)((words[lane] + threads - 1) / threads);
+                if (!check_rc(api,
+                              "cuLaunchKernel",
+                              api->cuLaunchKernel(kernel,
+                                                  blocks,
+                                                  1,
+                                                  1,
+                                                  threads,
+                                                  1,
+                                                  1,
+                                                  0,
+                                                  streams[lane],
+                                                  params[lane],
+                                                  NULL))) {
+                    goto fail;
+                }
+                launches_per_wave++;
+                launched_this_batch++;
+            }
+            if (launched_this_batch <= 0) {
+                break;
+            }
         }
-        iterations++;
+        if (launches_per_wave <= 0) {
+            goto fail;
+        }
+        if (!check_rc(api, "cuCtxSynchronize", api->cuCtxSynchronize())) {
+            goto fail;
+        }
+        iterations += (unsigned long)launches_per_wave;
     }
 
-    if (!check_rc(api, "cuCtxSynchronize", api->cuCtxSynchronize())) {
-        api->cuMemFree(device_mem);
-        api->cuCtxDestroy(ctx);
-        return 0;
-    }
-    if (!check_rc(api, "cuMemcpyDtoH", api->cuMemcpyDtoH(sample, device_mem, sizeof(sample)))) {
-        api->cuMemFree(device_mem);
-        api->cuCtxDestroy(ctx);
-        return 0;
+    if (!check_rc(api, "cuMemcpyDtoH", api->cuMemcpyDtoH(sample, device_mem[0], sizeof(sample)))) {
+        goto fail;
     }
 
     for (size_t i = 0; i < sizeof(sample) / sizeof(sample[0]); i++) {
@@ -326,12 +468,34 @@ static int run_ptx_fallback(struct cuda_api *api,
     report->iterations = iterations;
     snprintf(report->details,
              sizeof(report->details),
-             "profile_int32_fallback=OK iterations=%lu\n",
+             "fallback_int32=OK requested_mb=%d actual_mb=%d streams=%d queue_depth=%d per_stream_mb=%zu iterations=%lu\n",
+             size_mb,
+             report->buffer_mb,
+             report->stream_count,
+             STRESS_LAUNCH_DEPTH,
+             bytes_per_stream[0] / (1024u * 1024u),
              iterations);
 
-    api->cuMemFree(device_mem);
+    for (int lane = 0; lane < stream_count; lane++) {
+        if (device_mem[lane]) {
+            api->cuMemFree(device_mem[lane]);
+        }
+    }
+    destroy_streams(api, streams, stream_count);
     api->cuCtxDestroy(ctx);
     return 1;
+
+fail:
+    for (int lane = 0; lane < MAX_STRESS_STREAMS; lane++) {
+        if (device_mem[lane]) {
+            api->cuMemFree(device_mem[lane]);
+        }
+    }
+    destroy_streams(api, streams, MAX_STRESS_STREAMS);
+    if (ctx) {
+        api->cuCtxDestroy(ctx);
+    }
+    return 0;
 }
 
 #if HAVE_CUBLASLT_HEADERS
@@ -418,6 +582,7 @@ struct profile_desc {
 
 struct prepared_profile {
     struct profile_desc desc;
+    CUstream stream;
     cublasLtMatmulDesc_t op_desc;
     cublasLtMatrixLayout_t a_layout;
     cublasLtMatrixLayout_t b_layout;
@@ -617,8 +782,8 @@ static uint64_t choose_square_dim(size_t budget_bytes, size_t bytes_per_cell, in
     if (dim < (uint64_t)multiple) {
         dim = (uint64_t)multiple;
     }
-    if (dim > 8192u) {
-        dim = 8192u;
+    if (dim > 65536u) {
+        dim = 65536u;
     }
     return dim;
 }
@@ -704,10 +869,12 @@ static int prepare_profile(struct cublaslt_api *cublas,
                            cublasLtHandle_t handle,
                            struct cuda_api *cuda,
                            const struct profile_desc *desc,
+                           CUstream stream,
                            size_t profile_budget_bytes,
                            struct prepared_profile *out) {
     memset(out, 0, sizeof(*out));
     out->desc = *desc;
+    out->stream = stream;
 
     size_t bytes_per_cell = 0;
     bytes_per_cell += bytes_for_elements(desc->a_type, 1);
@@ -935,7 +1102,7 @@ static int run_cublas_profile(cublasLtHandle_t handle,
                                                &profile->heuristic.algo,
                                                (void *)(uintptr_t)profile->workspace_dev,
                                                profile->workspace_size,
-                                               (cudaStream_t)0));
+                                               profile->stream));
 }
 
 static int run_cublaslt_stress(struct cuda_api *cuda,
@@ -947,13 +1114,22 @@ static int run_cublaslt_stress(struct cuda_api *cuda,
                                int size_mb,
                                struct stress_report *report) {
     struct cublaslt_api cublas;
-    struct prepared_profile prepared[sizeof(k_profiles) / sizeof(k_profiles[0])];
+    struct prepared_profile prepared[MAX_STRESS_STREAMS * MAX_CUBLAS_PROFILES];
     cublasLtHandle_t handle = NULL;
     CUcontext ctx = NULL;
+    CUstream streams[MAX_STRESS_STREAMS] = {0};
     uint16_t sample[256];
     int cc = cc_major * 10 + cc_minor;
     int planned = 0;
     int active = 0;
+    int mp_count = 0;
+    int stream_count = 1;
+    int profile_count = (int)(sizeof(k_profiles) / sizeof(k_profiles[0]));
+    int prepared_count = 0;
+    int wave_launches = 0;
+    size_t requested_budget = 0;
+    size_t total_budget = 0;
+    size_t per_profile_budget = 0;
 
     memset(report, 0, sizeof(*report));
     snprintf(report->backend, sizeof(report->backend), "cublasLt");
@@ -986,16 +1162,46 @@ static int run_cublaslt_stress(struct cuda_api *cuda,
         return 0;
     }
 
-    size_t total_budget = (size_t)size_mb * 1024u * 1024u;
-    if (total_budget < (size_t)planned * 4u * 1024u * 1024u) {
-        total_budget = (size_t)planned * 4u * 1024u * 1024u;
+    requested_budget = (size_t)size_mb * 1024u * 1024u;
+    if (requested_budget < (size_t)planned * MIN_PROFILE_BUDGET_BYTES) {
+        requested_budget = (size_t)planned * MIN_PROFILE_BUDGET_BYTES;
     }
-    size_t per_profile_budget = total_budget / (size_t)planned;
-    if (per_profile_budget < 4u * 1024u * 1024u) {
-        per_profile_budget = 4u * 1024u * 1024u;
+    total_budget = clamp_budget_to_free_memory(cuda, requested_budget);
+    if (total_budget < (size_t)planned * MIN_PROFILE_BUDGET_BYTES) {
+        total_budget = (size_t)planned * MIN_PROFILE_BUDGET_BYTES;
     }
+    if (query_multiprocessor_count(cuda, dev, &mp_count) &&
+        cuda->cuStreamCreate &&
+        cuda->cuStreamDestroy) {
+        stream_count = choose_stream_count(mp_count, planned, total_budget, 1);
+    }
+    if (stream_count > 1) {
+        int created = 0;
+        for (; created < stream_count; created++) {
+            if (!check_rc(cuda, "cuStreamCreate", cuda->cuStreamCreate(&streams[created], 0))) {
+                destroy_streams(cuda, streams, created);
+                stream_count = 1;
+                break;
+            }
+        }
+    }
+    report->stream_count = stream_count;
+    per_profile_budget = total_budget / ((size_t)planned * (size_t)stream_count);
+    if (per_profile_budget < MIN_PROFILE_BUDGET_BYTES) {
+        per_profile_budget = MIN_PROFILE_BUDGET_BYTES;
+    }
+    report->buffer_mb = (int)(total_budget / (1024u * 1024u));
+    append_detail(report->details,
+                  sizeof(report->details),
+                  "requested_mb=%d actual_mb=%d streams=%d queue_depth=%d mp_count=%d per_worker_mb=%zu\n",
+                  size_mb,
+                  report->buffer_mb,
+                  report->stream_count,
+                  STRESS_LAUNCH_DEPTH,
+                  mp_count,
+                  per_profile_budget / (1024u * 1024u));
 
-    for (size_t i = 0; i < sizeof(k_profiles) / sizeof(k_profiles[0]); i++) {
+    for (int i = 0; i < profile_count; i++) {
         const struct profile_desc *desc = &k_profiles[i];
         if (!(desc->enabled && cc >= desc->min_cc)) {
             append_detail(report->details,
@@ -1005,63 +1211,87 @@ static int run_cublaslt_stress(struct cuda_api *cuda,
                           desc->min_cc);
             continue;
         }
-        if (prepare_profile(&cublas, handle, cuda, desc, per_profile_budget, &prepared[i])) {
-            active++;
-            append_detail(report->details,
-                          sizeof(report->details),
-                          "%s=READY dim=%llux%llux%llu block=%s\n",
-                          desc->name,
-                          (unsigned long long)prepared[i].m,
-                          (unsigned long long)prepared[i].n,
-                          (unsigned long long)prepared[i].k,
-                          desc->block_label);
-        } else {
-            append_detail(report->details, sizeof(report->details), "%s=SKIPPED unsupported\n", desc->name);
+        for (int lane = 0; lane < stream_count; lane++) {
+            CUstream stream = streams[lane];
+            if (prepared_count >= (int)(sizeof(prepared) / sizeof(prepared[0]))) {
+                break;
+            }
+            if (prepare_profile(&cublas, handle, cuda, desc, stream, per_profile_budget, &prepared[prepared_count])) {
+                active++;
+                append_detail(report->details,
+                              sizeof(report->details),
+                              "%s[%d]=READY dim=%llux%llux%llu block=%s stream=%d\n",
+                              desc->name,
+                              lane,
+                              (unsigned long long)prepared[prepared_count].m,
+                              (unsigned long long)prepared[prepared_count].n,
+                              (unsigned long long)prepared[prepared_count].k,
+                              desc->block_label,
+                              lane);
+                prepared_count++;
+            } else {
+                append_detail(report->details,
+                              sizeof(report->details),
+                              "%s[%d]=SKIPPED unsupported\n",
+                              desc->name,
+                              lane);
+            }
         }
     }
 
     if (active <= 0) {
         cublas.cublasLtDestroy(handle);
+        destroy_streams(cuda, streams, stream_count);
         cuda->cuCtxDestroy(ctx);
         return 0;
     }
 
     double deadline = now_seconds() + (double)seconds;
     while (now_seconds() < deadline) {
-        for (size_t i = 0; i < sizeof(prepared) / sizeof(prepared[0]); i++) {
-            if (!prepared[i].ready) {
-                continue;
-            }
-            if (!run_cublas_profile(handle, &cublas, &prepared[i])) {
-                append_detail(report->details,
-                              sizeof(report->details),
-                              "%s=FAILED runtime\n",
-                              prepared[i].desc.name);
-                for (size_t j = 0; j < sizeof(prepared) / sizeof(prepared[0]); j++) {
-                    destroy_profile(&cublas, cuda, &prepared[j]);
+        wave_launches = 0;
+        for (int depth = 0; depth < STRESS_LAUNCH_DEPTH && now_seconds() < deadline; depth++) {
+            int launched_this_batch = 0;
+            for (int i = 0; i < prepared_count; i++) {
+                if (!prepared[i].ready) {
+                    continue;
                 }
-                cublas.cublasLtDestroy(handle);
-                cuda->cuCtxDestroy(ctx);
-                return 0;
+                if (!run_cublas_profile(handle, &cublas, &prepared[i])) {
+                    append_detail(report->details,
+                                  sizeof(report->details),
+                                  "%s=FAILED runtime\n",
+                                  prepared[i].desc.name);
+                    for (int j = 0; j < prepared_count; j++) {
+                        destroy_profile(&cublas, cuda, &prepared[j]);
+                    }
+                    cublas.cublasLtDestroy(handle);
+                    destroy_streams(cuda, streams, stream_count);
+                    cuda->cuCtxDestroy(ctx);
+                    return 0;
+                }
+                prepared[i].iterations++;
+                report->iterations++;
+                wave_launches++;
+                launched_this_batch++;
             }
-            prepared[i].iterations++;
-            report->iterations++;
-            if (now_seconds() >= deadline) {
+            if (launched_this_batch <= 0) {
                 break;
             }
         }
-    }
-
-    if (!check_rc(cuda, "cuCtxSynchronize", cuda->cuCtxSynchronize())) {
-        for (size_t i = 0; i < sizeof(prepared) / sizeof(prepared[0]); i++) {
-            destroy_profile(&cublas, cuda, &prepared[i]);
+        if (wave_launches <= 0) {
+            break;
+        }
+        if (!check_rc(cuda, "cuCtxSynchronize", cuda->cuCtxSynchronize())) {
+            for (int i = 0; i < prepared_count; i++) {
+                destroy_profile(&cublas, cuda, &prepared[i]);
+            }
+            cublas.cublasLtDestroy(handle);
+            destroy_streams(cuda, streams, stream_count);
+            cuda->cuCtxDestroy(ctx);
+            return 0;
         }
-        cublas.cublasLtDestroy(handle);
-        cuda->cuCtxDestroy(ctx);
-        return 0;
     }
 
-    for (size_t i = 0; i < sizeof(prepared) / sizeof(prepared[0]); i++) {
+    for (int i = 0; i < prepared_count; i++) {
         if (!prepared[i].ready) {
             continue;
         }
@@ -1072,7 +1302,7 @@ static int run_cublaslt_stress(struct cuda_api *cuda,
                       prepared[i].iterations);
     }
 
-    for (size_t i = 0; i < sizeof(prepared) / sizeof(prepared[0]); i++) {
+    for (int i = 0; i < prepared_count; i++) {
         if (prepared[i].ready) {
             if (check_rc(cuda, "cuMemcpyDtoH", cuda->cuMemcpyDtoH(sample, prepared[i].d_dev, sizeof(sample)))) {
                 for (size_t j = 0; j < sizeof(sample) / sizeof(sample[0]); j++) {
@@ -1083,10 +1313,11 @@ static int run_cublaslt_stress(struct cuda_api *cuda,
         }
     }
 
-    for (size_t i = 0; i < sizeof(prepared) / sizeof(prepared[0]); i++) {
+    for (int i = 0; i < prepared_count; i++) {
         destroy_profile(&cublas, cuda, &prepared[i]);
     }
     cublas.cublasLtDestroy(handle);
+    destroy_streams(cuda, streams, stream_count);
     cuda->cuCtxDestroy(ctx);
     return 1;
 }
@@ -1095,13 +1326,16 @@ static int run_cublaslt_stress(struct cuda_api *cuda,
 int main(int argc, char **argv) {
     int seconds = 5;
     int size_mb = 64;
+    int device_index = 0;
     for (int i = 1; i < argc; i++) {
         if ((strcmp(argv[i], "--seconds") == 0 || strcmp(argv[i], "-t") == 0) && i + 1 < argc) {
             seconds = atoi(argv[++i]);
         } else if ((strcmp(argv[i], "--size-mb") == 0 || strcmp(argv[i], "-m") == 0) && i + 1 < argc) {
             size_mb = atoi(argv[++i]);
+        } else if ((strcmp(argv[i], "--device") == 0 || strcmp(argv[i], "-d") == 0) && i + 1 < argc) {
+            device_index = atoi(argv[++i]);
         } else {
-            fprintf(stderr, "usage: %s [--seconds N] [--size-mb N]\n", argv[0]);
+            fprintf(stderr, "usage: %s [--seconds N] [--size-mb N] [--device N]\n", argv[0]);
             return 2;
         }
     }
@@ -1111,6 +1345,9 @@ int main(int argc, char **argv) {
     if (size_mb <= 0) {
         size_mb = 64;
     }
+    if (device_index < 0) {
+        device_index = 0;
+    }
 
     struct cuda_api cuda;
     if (!load_cuda(&cuda)) {
@@ -1133,8 +1370,13 @@ int main(int argc, char **argv) {
         return 1;
     }
 
+    if (device_index >= count) {
+        fprintf(stderr, "device index %d out of range (found %d CUDA device(s))\n", device_index, count);
+        return 1;
+    }
+
     CUdevice dev = 0;
-    if (!check_rc(&cuda, "cuDeviceGet", cuda.cuDeviceGet(&dev, 0))) {
+    if (!check_rc(&cuda, "cuDeviceGet", cuda.cuDeviceGet(&dev, device_index))) {
         return 1;
     }
 
@@ -1162,10 +1404,12 @@ int main(int argc, char **argv) {
     }
 
     printf("device=%s\n", report.device);
+    printf("device_index=%d\n", device_index);
     printf("compute_capability=%d.%d\n", report.cc_major, report.cc_minor);
     printf("backend=%s\n", report.backend);
     printf("duration_s=%d\n", seconds);
     printf("buffer_mb=%d\n", report.buffer_mb);
+    printf("streams=%d\n", report.stream_count);
     printf("iterations=%lu\n", report.iterations);
     printf("checksum=%llu\n", (unsigned long long)report.checksum);
     if (report.details[0] != '\0') {

iso/builder/build-cublas.sh

@@ -1,9 +1,9 @@
 #!/bin/sh
-# build-cublas.sh — download cuBLASLt/cuBLAS/cudart runtime + headers for bee-gpu-stress.
+# build-cublas.sh — download cuBLASLt/cuBLAS/cudart runtime + headers for bee-gpu-burn worker.
 #
 # Downloads .deb packages from NVIDIA's CUDA apt repository (Debian 12, x86_64),
 # verifies them against Packages.gz, and extracts the small subset we need:
-#   - headers for compiling bee-gpu-stress against cuBLASLt
+#   - headers for compiling bee-gpu-burn worker against cuBLASLt
 #   - runtime libs for libcublas, libcublasLt, libcudart inside the ISO
 
 set -e

iso/builder/build-in-container.sh

@@ -12,6 +12,7 @@ CACHE_DIR="${BEE_BUILDER_CACHE_DIR:-${REPO_ROOT}/dist/container-cache}"
 AUTH_KEYS=""
 REBUILD_IMAGE=0
 CLEAN_CACHE=0
+VARIANT="all"
 
 . "${BUILDER_DIR}/VERSIONS"
 
@@ -34,14 +35,23 @@ while [ $# -gt 0 ]; do
             REBUILD_IMAGE=1
             shift
             ;;
+        --variant)
+            VARIANT="$2"
+            shift 2
+            ;;
         *)
             echo "unknown arg: $1" >&2
-            echo "usage: $0 [--cache-dir /path] [--rebuild-image] [--clean-build] [--authorized-keys /path/to/authorized_keys]" >&2
+            echo "usage: $0 [--cache-dir /path] [--rebuild-image] [--clean-build] [--authorized-keys /path/to/authorized_keys] [--variant nvidia|amd|all]" >&2
             exit 1
             ;;
     esac
 done
 
+case "$VARIANT" in
+    nvidia|amd|nogpu|all) ;;
+    *) echo "unknown variant: $VARIANT (expected nvidia, amd, nogpu, or all)" >&2; exit 1 ;;
+esac
+
 if [ "$CLEAN_CACHE" = "1" ]; then
     echo "=== cleaning build cache: ${CACHE_DIR} ==="
     rm -rf "${CACHE_DIR:?}/go-build" \
@@ -49,8 +59,10 @@ if [ "$CLEAN_CACHE" = "1" ]; then
            "${CACHE_DIR:?}/tmp" \
            "${CACHE_DIR:?}/bee" \
            "${CACHE_DIR:?}/lb-packages"
-    echo "=== cleaning live-build work dir: ${REPO_ROOT}/dist/live-build-work ==="
-    rm -rf "${REPO_ROOT}/dist/live-build-work"
+    echo "=== cleaning live-build work dirs ==="
+    rm -rf "${REPO_ROOT}/dist/live-build-work-nvidia"
+    rm -rf "${REPO_ROOT}/dist/live-build-work-amd"
+    rm -rf "${REPO_ROOT}/dist/live-build-work-nogpu"
     echo "=== caches cleared, proceeding with build ==="
 fi
 
@@ -108,34 +120,75 @@ else
     echo "=== using existing builder image ${IMAGE_REF} (${BUILDER_PLATFORM}) ==="
 fi
 
-set -- \
-    run --rm --privileged \
-    --platform "${BUILDER_PLATFORM}" \
-    -v "${REPO_ROOT}:/work" \
-    -v "${CACHE_DIR}:/cache" \
-    -e BEE_CONTAINER_BUILD=1 \
-    -e GOCACHE=/cache/go-build \
-    -e GOMODCACHE=/cache/go-mod \
-    -e TMPDIR=/cache/tmp \
-    -e BEE_CACHE_DIR=/cache/bee \
-    -w /work \
-    "${IMAGE_REF}" \
-    sh /work/iso/builder/build.sh
-
-if [ -n "$AUTH_KEYS" ]; then
-    set -- run --rm --privileged \
-        --platform "${BUILDER_PLATFORM}" \
-        -v "${REPO_ROOT}:/work" \
-        -v "${CACHE_DIR}:/cache" \
-        -v "${AUTH_KEYS_DIR}:/tmp/bee-authkeys:ro" \
+# Build base docker run args (without --authorized-keys)
+build_run_args() {
+    _variant="$1"
+    _auth_arg=""
+    if [ -n "$AUTH_KEYS" ]; then
+        _auth_arg="--authorized-keys /tmp/bee-authkeys/${AUTH_KEYS_BASE}"
+    fi
+    echo "run --rm --privileged \
+        --platform ${BUILDER_PLATFORM} \
+        -v ${REPO_ROOT}:/work \
+        -v ${CACHE_DIR}:/cache \
+        ${AUTH_KEYS:+-v ${AUTH_KEYS_DIR}:/tmp/bee-authkeys:ro} \
         -e BEE_CONTAINER_BUILD=1 \
         -e GOCACHE=/cache/go-build \
         -e GOMODCACHE=/cache/go-mod \
         -e TMPDIR=/cache/tmp \
         -e BEE_CACHE_DIR=/cache/bee \
         -w /work \
-        "${IMAGE_REF}" \
-        sh /work/iso/builder/build.sh --authorized-keys "/tmp/bee-authkeys/${AUTH_KEYS_BASE}"
-fi
+        ${IMAGE_REF} \
+        sh /work/iso/builder/build.sh --variant ${_variant} ${_auth_arg}"
+}
 
-"$CONTAINER_TOOL" "$@"
+run_variant() {
+    _v="$1"
+    echo "=== building variant: ${_v} ==="
+    if [ -n "$AUTH_KEYS" ]; then
+        "$CONTAINER_TOOL" run --rm --privileged \
+            --platform "${BUILDER_PLATFORM}" \
+            -v "${REPO_ROOT}:/work" \
+            -v "${CACHE_DIR}:/cache" \
+            -v "${AUTH_KEYS_DIR}:/tmp/bee-authkeys:ro" \
+            -e BEE_CONTAINER_BUILD=1 \
+            -e GOCACHE=/cache/go-build \
+            -e GOMODCACHE=/cache/go-mod \
+            -e TMPDIR=/cache/tmp \
+            -e BEE_CACHE_DIR=/cache/bee \
+            -w /work \
+            "${IMAGE_REF}" \
+            sh /work/iso/builder/build.sh --variant "${_v}" \
+                --authorized-keys "/tmp/bee-authkeys/${AUTH_KEYS_BASE}"
+    else
+        "$CONTAINER_TOOL" run --rm --privileged \
+            --platform "${BUILDER_PLATFORM}" \
+            -v "${REPO_ROOT}:/work" \
+            -v "${CACHE_DIR}:/cache" \
+            -e BEE_CONTAINER_BUILD=1 \
+            -e GOCACHE=/cache/go-build \
+            -e GOMODCACHE=/cache/go-mod \
+            -e TMPDIR=/cache/tmp \
+            -e BEE_CACHE_DIR=/cache/bee \
+            -w /work \
+            "${IMAGE_REF}" \
+            sh /work/iso/builder/build.sh --variant "${_v}"
+    fi
+}
+
+case "$VARIANT" in
+    nvidia)
+        run_variant nvidia
+        ;;
+    amd)
+        run_variant amd
+        ;;
+    nogpu)
+        run_variant nogpu
+        ;;
+    all)
+        run_variant nvidia
+        run_variant amd
+        run_variant nogpu
+        ;;
+esac

iso/builder/build-john.sh

@@ -0,0 +1,55 @@
+#!/bin/sh
+# build-john.sh — build John the Ripper jumbo with OpenCL support for the LiveCD.
+#
+# Downloads a pinned source snapshot from the official openwall/john repository,
+# builds it inside the builder container, and caches the resulting run/ tree.
+
+set -e
+
+JOHN_COMMIT="$1"
+DIST_DIR="$2"
+
+[ -n "$JOHN_COMMIT" ] || { echo "usage: $0 <john-commit> <dist-dir>"; exit 1; }
+[ -n "$DIST_DIR" ] || { echo "usage: $0 <john-commit> <dist-dir>"; exit 1; }
+
+echo "=== John the Ripper jumbo ${JOHN_COMMIT} ==="
+
+CACHE_DIR="${DIST_DIR}/john-${JOHN_COMMIT}"
+CACHE_ROOT="${BEE_CACHE_DIR:-${DIST_DIR}/cache}"
+DOWNLOAD_CACHE_DIR="${CACHE_ROOT}/john-downloads"
+SRC_TAR="${DOWNLOAD_CACHE_DIR}/john-${JOHN_COMMIT}.tar.gz"
+SRC_URL="https://github.com/openwall/john/archive/${JOHN_COMMIT}.tar.gz"
+
+if [ -x "${CACHE_DIR}/run/john" ] && [ -f "${CACHE_DIR}/run/john.conf" ]; then
+    echo "=== john cached, skipping build ==="
+    echo "run dir: ${CACHE_DIR}/run"
+    exit 0
+fi
+
+mkdir -p "${DOWNLOAD_CACHE_DIR}"
+if [ ! -f "${SRC_TAR}" ]; then
+    echo "=== downloading john source snapshot ==="
+    wget --show-progress -O "${SRC_TAR}" "${SRC_URL}"
+fi
+
+BUILD_TMP=$(mktemp -d)
+trap 'rm -rf "${BUILD_TMP}"' EXIT INT TERM
+
+cd "${BUILD_TMP}"
+tar xf "${SRC_TAR}"
+SRC_DIR=$(find . -maxdepth 1 -type d -name 'john-*' | head -1)
+[ -n "${SRC_DIR}" ] || { echo "ERROR: john source directory not found"; exit 1; }
+
+cd "${SRC_DIR}/src"
+echo "=== configuring john ==="
+./configure
+echo "=== building john ==="
+make clean >/dev/null 2>&1 || true
+make -j"$(nproc)"
+
+mkdir -p "${CACHE_DIR}"
+cp -a "../run" "${CACHE_DIR}/run"
+chmod +x "${CACHE_DIR}/run/john"
+
+echo "=== john build complete ==="
+echo "run dir: ${CACHE_DIR}/run"

iso/builder/build-nccl-tests.sh

@@ -9,6 +9,7 @@
 #
 # Output layout:
 #   $CACHE_DIR/bin/all_reduce_perf
+#   $CACHE_DIR/lib/libcudart.so* copied from the nvcc toolchain used to build nccl-tests
 
 set -e
 
@@ -30,7 +31,7 @@ CACHE_DIR="${DIST_DIR}/nccl-tests-${NCCL_TESTS_VERSION}"
 CACHE_ROOT="${BEE_CACHE_DIR:-${DIST_DIR}/cache}"
 DOWNLOAD_CACHE_DIR="${CACHE_ROOT}/nccl-tests-downloads"
 
-if [ -f "${CACHE_DIR}/bin/all_reduce_perf" ]; then
+if [ -f "${CACHE_DIR}/bin/all_reduce_perf" ] && [ "$(find "${CACHE_DIR}/lib" -maxdepth 1 -name 'libcudart.so*' 2>/dev/null | wc -l)" -gt 0 ]; then
     echo "=== nccl-tests cached, skipping build ==="
     echo "binary: ${CACHE_DIR}/bin/all_reduce_perf"
     exit 0
@@ -52,6 +53,23 @@ echo "nvcc: $NVCC"
 CUDA_HOME="$(dirname "$(dirname "$NVCC")")"
 echo "CUDA_HOME: $CUDA_HOME"
 
+find_cudart_dir() {
+    for dir in \
+        "${CUDA_HOME}/targets/x86_64-linux/lib" \
+        "${CUDA_HOME}/targets/x86_64-linux/lib/stubs" \
+        "${CUDA_HOME}/lib64" \
+        "${CUDA_HOME}/lib"; do
+        if [ -d "$dir" ] && find "$dir" -maxdepth 1 -name 'libcudart.so*' -type f | grep -q .; then
+            printf '%s\n' "$dir"
+            return 0
+        fi
+    done
+    return 1
+}
+
+CUDART_DIR="$(find_cudart_dir)" || { echo "ERROR: libcudart.so* not found under ${CUDA_HOME}"; exit 1; }
+echo "cudart dir: $CUDART_DIR"
+
 # Download libnccl-dev for nccl.h
 REPO_BASE="https://developer.download.nvidia.com/compute/cuda/repos/debian${DEBIAN_VERSION}/x86_64"
 DEV_PKG="libnccl-dev_${NCCL_VERSION}+cuda${NCCL_CUDA_VERSION}_amd64.deb"
@@ -136,6 +154,11 @@ mkdir -p "${CACHE_DIR}/bin"
 cp "./build/all_reduce_perf" "${CACHE_DIR}/bin/all_reduce_perf"
 chmod +x "${CACHE_DIR}/bin/all_reduce_perf"
 
+mkdir -p "${CACHE_DIR}/lib"
+find "${CUDART_DIR}" -maxdepth 1 -name 'libcudart.so*' -type f -exec cp -a {} "${CACHE_DIR}/lib/" \;
+[ "$(find "${CACHE_DIR}/lib" -maxdepth 1 -name 'libcudart.so*' -type f | wc -l)" -gt 0 ] || { echo "ERROR: libcudart runtime copy failed"; exit 1; }
+
 echo "=== nccl-tests build complete ==="
 echo "binary: ${CACHE_DIR}/bin/all_reduce_perf"
 ls -lh "${CACHE_DIR}/bin/all_reduce_perf"
+ls -lh "${CACHE_DIR}/lib/"libcudart.so* 2>/dev/null || true

iso/builder/build-nvidia-module.sh

@@ -10,7 +10,7 @@
 # Output layout:
 #   $CACHE_DIR/modules/   — nvidia*.ko files
 #   $CACHE_DIR/bin/       — nvidia-smi, nvidia-debugdump
-#   $CACHE_DIR/lib/       — libnvidia-ml.so*, libcuda.so* (for nvidia-smi)
+#   $CACHE_DIR/lib/       — libnvidia-ml.so*, libcuda.so*, OpenCL-related libs
 
 set -e
 
@@ -133,7 +133,14 @@ fi
 # Copy ALL userspace library files.
 # libnvidia-ptxjitcompiler is required by libcuda for PTX JIT compilation
 # (cuModuleLoadDataEx with PTX source) — without it CUDA_ERROR_JIT_COMPILER_NOT_FOUND.
-for lib in libnvidia-ml libcuda libnvidia-ptxjitcompiler; do
+for lib in \
+    libnvidia-ml \
+    libcuda \
+    libnvidia-ptxjitcompiler \
+    libnvidia-opencl \
+    libnvidia-compiler \
+    libnvidia-nvvm \
+    libnvidia-fatbinaryloader; do
     count=0
     for f in $(find "$EXTRACT_DIR" -maxdepth 1 -name "${lib}.so.*" 2>/dev/null); do
         cp "$f" "$CACHE_DIR/lib/" && count=$((count+1))
@@ -150,7 +157,14 @@ ko_count=$(ls "$CACHE_DIR/modules/"*.ko 2>/dev/null | wc -l)
 [ "$ko_count" -gt 0 ] || { echo "ERROR: no .ko files built in $CACHE_DIR/modules/"; exit 1; }
 
 # Create soname symlinks: use [0-9][0-9]* to avoid circular symlink (.so.1 has single digit)
-for lib in libnvidia-ml libcuda libnvidia-ptxjitcompiler; do
+for lib in \
+    libnvidia-ml \
+    libcuda \
+    libnvidia-ptxjitcompiler \
+    libnvidia-opencl \
+    libnvidia-compiler \
+    libnvidia-nvvm \
+    libnvidia-fatbinaryloader; do
     versioned=$(ls "$CACHE_DIR/lib/${lib}.so."[0-9][0-9]* 2>/dev/null | head -1)
     [ -n "$versioned" ] || continue
     base=$(basename "$versioned")

iso/builder/build.sh

@@ -13,19 +13,29 @@ BUILDER_DIR="${REPO_ROOT}/iso/builder"
 OVERLAY_DIR="${REPO_ROOT}/iso/overlay"
 DIST_DIR="${REPO_ROOT}/dist"
 VENDOR_DIR="${REPO_ROOT}/iso/vendor"
-BUILD_WORK_DIR="${DIST_DIR}/live-build-work"
-OVERLAY_STAGE_DIR="${DIST_DIR}/overlay-stage"
 CACHE_ROOT="${BEE_CACHE_DIR:-${DIST_DIR}/cache}"
 AUTH_KEYS=""
+BEE_GPU_VENDOR="nvidia"
 
 # parse args
 while [ $# -gt 0 ]; do
     case "$1" in
         --authorized-keys) AUTH_KEYS="$2"; shift 2 ;;
+        --variant) BEE_GPU_VENDOR="$2"; shift 2 ;;
         *) echo "unknown arg: $1"; exit 1 ;;
     esac
 done
 
+case "$BEE_GPU_VENDOR" in
+    nvidia|amd|nogpu) ;;
+    *) echo "unknown variant: $BEE_GPU_VENDOR (expected nvidia, amd, or nogpu)" >&2; exit 1 ;;
+esac
+
+BUILD_WORK_DIR="${DIST_DIR}/live-build-work-${BEE_GPU_VENDOR}"
+OVERLAY_STAGE_DIR="${DIST_DIR}/overlay-stage-${BEE_GPU_VENDOR}"
+
+export BEE_GPU_VENDOR
+
 . "${BUILDER_DIR}/VERSIONS"
 export PATH="$PATH:/usr/local/go/bin"
 
@@ -101,8 +111,231 @@ resolve_iso_version() {
     resolve_audit_version
 }
 
+iso_list_files() {
+    iso_path="$1"
+
+    if command -v bsdtar >/dev/null 2>&1; then
+        bsdtar -tf "$iso_path"
+        return $?
+    fi
+
+    if command -v xorriso >/dev/null 2>&1; then
+        xorriso -indev "$iso_path" -find / -type f -print 2>/dev/null | sed 's#^/##'
+        return $?
+    fi
+
+    return 127
+}
+
+iso_extract_file() {
+    iso_path="$1"
+    iso_member="$2"
+
+    if command -v bsdtar >/dev/null 2>&1; then
+        bsdtar -xOf "$iso_path" "$iso_member"
+        return $?
+    fi
+
+    if command -v xorriso >/dev/null 2>&1; then
+        xorriso -osirrox on -indev "$iso_path" -cat "/$iso_member" 2>/dev/null
+        return $?
+    fi
+
+    return 127
+}
+
+require_iso_reader() {
+    command -v bsdtar >/dev/null 2>&1 && return 0
+    command -v xorriso >/dev/null 2>&1 && return 0
+    memtest_fail "ISO reader is required for validation/debug (expected bsdtar or xorriso)" "${1:-}"
+}
+
+dump_memtest_debug() {
+    phase="$1"
+    lb_dir="${2:-}"
+    iso_path="${3:-}"
+    phase_slug="$(printf '%s' "${phase}" | tr ' /' '__')"
+    memtest_log="${LOG_DIR:-}/memtest-${phase_slug}.log"
+
+    (
+        echo "=== memtest debug: ${phase} ==="
+
+        echo "-- auto/config --"
+        if [ -f "${BUILDER_DIR}/auto/config" ]; then
+            grep -n -- '--memtest' "${BUILDER_DIR}/auto/config" || echo "  (no --memtest line found)"
+        else
+            echo "  (missing ${BUILDER_DIR}/auto/config)"
+        fi
+
+        echo "-- source bootloader templates --"
+        for cfg in \
+            "${BUILDER_DIR}/config/bootloaders/grub-pc/grub.cfg" \
+            "${BUILDER_DIR}/config/bootloaders/isolinux/live.cfg.in"; do
+            if [ -f "$cfg" ]; then
+                echo "  file: $cfg"
+                grep -n 'Memory Test\|memtest' "$cfg" || echo "    (no memtest lines)"
+            fi
+        done
+
+        if [ -n "$lb_dir" ] && [ -d "$lb_dir" ]; then
+            echo "-- live-build workdir package lists --"
+            for pkg in \
+                "$lb_dir/config/package-lists/bee.list.chroot" \
+                "$lb_dir/config/package-lists/bee-gpu.list.chroot" \
+                "$lb_dir/config/package-lists/bee-nvidia.list.chroot"; do
+                if [ -f "$pkg" ]; then
+                    echo "  file: $pkg"
+                    grep -n 'memtest' "$pkg" || echo "    (no memtest lines)"
+                fi
+            done
+
+            echo "-- live-build chroot/boot --"
+            if [ -d "$lb_dir/chroot/boot" ]; then
+                find "$lb_dir/chroot/boot" -maxdepth 1 -name 'memtest*' -print | sed 's/^/  /' || true
+            else
+                echo "  (missing $lb_dir/chroot/boot)"
+            fi
+
+            echo "-- live-build binary/boot --"
+            if [ -d "$lb_dir/binary/boot" ]; then
+                find "$lb_dir/binary/boot" -maxdepth 1 -name 'memtest*' -print | sed 's/^/  /' || true
+            else
+                echo "  (missing $lb_dir/binary/boot)"
+            fi
+
+            echo "-- live-build package cache --"
+            if [ -d "$lb_dir/cache/packages.chroot" ]; then
+                find "$lb_dir/cache/packages.chroot" -maxdepth 1 -name 'memtest86+*.deb' -print | sed 's/^/  /' || true
+            else
+                echo "  (missing $lb_dir/cache/packages.chroot)"
+            fi
+        fi
+
+        if [ -n "$iso_path" ] && [ -f "$iso_path" ]; then
+            echo "-- ISO memtest files --"
+            iso_list_files "$iso_path" | grep 'memtest' | sed 's/^/  /' || echo "  (no memtest files in ISO)"
+
+            echo "-- ISO GRUB memtest lines --"
+            iso_extract_file "$iso_path" boot/grub/grub.cfg 2>/dev/null | grep -n 'Memory Test\|memtest' || echo "  (no memtest lines in boot/grub/grub.cfg)"
+
+            echo "-- ISO isolinux memtest lines --"
+            iso_extract_file "$iso_path" isolinux/live.cfg 2>/dev/null | grep -n 'Memory Test\|memtest' || echo "  (no memtest lines in isolinux/live.cfg)"
+        fi
+
+        echo "=== end memtest debug: ${phase} ==="
+    ) | {
+        if [ -n "${LOG_DIR:-}" ] && [ -d "${LOG_DIR}" ]; then
+            tee "${memtest_log}"
+        else
+            cat
+        fi
+    }
+}
+
+memtest_fail() {
+    msg="$1"
+    iso_path="${2:-}"
+    echo "ERROR: ${msg}" >&2
+    dump_memtest_debug "failure" "${LB_DIR:-}" "$iso_path" >&2
+    exit 1
+}
+
+validate_iso_memtest() {
+    iso_path="$1"
+    echo "=== validating memtest in ISO ==="
+
+    [ -f "$iso_path" ] || memtest_fail "ISO not found for validation: $iso_path" "$iso_path"
+    require_iso_reader "$iso_path"
+
+    iso_list_files "$iso_path" | grep -q '^boot/memtest86+x64\.bin$' || {
+        memtest_fail "memtest BIOS binary missing in ISO: boot/memtest86+x64.bin" "$iso_path"
+    }
+    iso_list_files "$iso_path" | grep -q '^boot/memtest86+x64\.efi$' || {
+        memtest_fail "memtest EFI binary missing in ISO: boot/memtest86+x64.efi" "$iso_path"
+    }
+
+    grub_cfg="$(mktemp)"
+    isolinux_cfg="$(mktemp)"
+
+    iso_extract_file "$iso_path" boot/grub/grub.cfg > "$grub_cfg" || memtest_fail "failed to extract boot/grub/grub.cfg from ISO" "$iso_path"
+    iso_extract_file "$iso_path" isolinux/live.cfg > "$isolinux_cfg" || memtest_fail "failed to extract isolinux/live.cfg from ISO" "$iso_path"
+
+    grep -q 'Memory Test (memtest86+)' "$grub_cfg" || {
+        memtest_fail "GRUB menu entry for memtest is missing" "$iso_path"
+    }
+    grep -q '/boot/memtest86+x64\.efi' "$grub_cfg" || {
+        memtest_fail "GRUB memtest EFI path is missing" "$iso_path"
+    }
+    grep -q '/boot/memtest86+x64\.bin' "$grub_cfg" || {
+        memtest_fail "GRUB memtest BIOS path is missing" "$iso_path"
+    }
+    grep -q 'Memory Test (memtest86+)' "$isolinux_cfg" || {
+        memtest_fail "isolinux menu entry for memtest is missing" "$iso_path"
+    }
+    grep -q '/boot/memtest86+x64\.bin' "$isolinux_cfg" || {
+        memtest_fail "isolinux memtest path is missing" "$iso_path"
+    }
+
+    rm -f "$grub_cfg" "$isolinux_cfg"
+    echo "=== memtest validation OK ==="
+}
+
 AUDIT_VERSION_EFFECTIVE="$(resolve_audit_version)"
 ISO_VERSION_EFFECTIVE="$(resolve_iso_version)"
+ISO_BASENAME="easy-bee-${BEE_GPU_VENDOR}-v${ISO_VERSION_EFFECTIVE}-amd64"
+LOG_DIR="${DIST_DIR}/${ISO_BASENAME}.logs"
+LOG_ARCHIVE="${DIST_DIR}/${ISO_BASENAME}.logs.tar.gz"
+ISO_OUT="${DIST_DIR}/${ISO_BASENAME}.iso"
+LOG_OUT="${LOG_DIR}/build.log"
+
+cleanup_build_log() {
+    status="${1:-$?}"
+    trap - EXIT INT TERM HUP
+
+    if [ "${BUILD_LOG_ACTIVE:-0}" = "1" ]; then
+        BUILD_LOG_ACTIVE=0
+        exec 1>&3 2>&4
+        exec 3>&- 4>&-
+        if [ -n "${BUILD_TEE_PID:-}" ]; then
+            wait "${BUILD_TEE_PID}" 2>/dev/null || true
+        fi
+        rm -f "${BUILD_LOG_PIPE}"
+    fi
+
+    if [ -n "${LOG_DIR:-}" ] && [ -d "${LOG_DIR}" ] && command -v tar >/dev/null 2>&1; then
+        rm -f "${LOG_ARCHIVE}"
+        tar -czf "${LOG_ARCHIVE}" -C "${DIST_DIR}" "$(basename "${LOG_DIR}")" 2>/dev/null || true
+    fi
+
+    exit "${status}"
+}
+
+start_build_log() {
+    command -v tee >/dev/null 2>&1 || {
+        echo "ERROR: tee is required for build logging" >&2
+        exit 1
+    }
+
+    rm -rf "${LOG_DIR}"
+    rm -f "${LOG_ARCHIVE}"
+    mkdir -p "${LOG_DIR}"
+    BUILD_LOG_PIPE="$(mktemp -u "${TMPDIR:-/tmp}/bee-build-log.XXXXXX")"
+    mkfifo "${BUILD_LOG_PIPE}"
+
+    exec 3>&1 4>&2
+    tee "${LOG_OUT}" < "${BUILD_LOG_PIPE}" &
+    BUILD_TEE_PID=$!
+    exec > "${BUILD_LOG_PIPE}" 2>&1
+    BUILD_LOG_ACTIVE=1
+
+    trap 'cleanup_build_log "$?"' EXIT INT TERM HUP
+
+    echo "=== build log dir: ${LOG_DIR} ==="
+    echo "=== build log: ${LOG_OUT} ==="
+    echo "=== build log archive: ${LOG_ARCHIVE} ==="
+}
+
+start_build_log
 
 # Auto-detect kernel ABI: refresh apt index, then query current linux-image-amd64 dependency.
 # If headers for the detected ABI are not yet installed (kernel updated since image build),
@@ -132,7 +365,7 @@ if [ ! -d "/usr/src/linux-headers-${KVER}" ]; then
     apt-get install -y "linux-headers-${KVER}"
 fi
 
-echo "=== bee ISO build ==="
+echo "=== bee ISO build (variant: ${BEE_GPU_VENDOR}) ==="
 echo "Debian: ${DEBIAN_VERSION}, Kernel ABI: ${DEBIAN_KERNEL_ABI}, Go: ${GO_VERSION}"
 echo "Audit version: ${AUDIT_VERSION_EFFECTIVE}, ISO version: ${ISO_VERSION_EFFECTIVE}"
 echo ""
@@ -141,8 +374,8 @@ echo "=== syncing git submodules ==="
 git -C "${REPO_ROOT}" submodule update --init --recursive
 
 # --- compile bee binary (static, Linux amd64) ---
+# Shared between variants — built once, reused on second pass.
 BEE_BIN="${DIST_DIR}/bee-linux-amd64"
-GPU_STRESS_BIN="${DIST_DIR}/bee-gpu-stress-linux-amd64"
 NEED_BUILD=1
 if [ -f "$BEE_BIN" ]; then
     NEWEST_SRC=$(find "${REPO_ROOT}/audit" -name '*.go' -newer "$BEE_BIN" | head -1)
@@ -172,37 +405,41 @@ else
     echo "=== bee binary up to date, skipping build ==="
 fi
 
-echo ""
-echo "=== downloading cuBLAS/cuBLASLt/cudart ${NCCL_CUDA_VERSION} userspace ==="
-sh "${BUILDER_DIR}/build-cublas.sh" \
-    "${CUBLAS_VERSION}" \
-    "${CUDA_USERSPACE_VERSION}" \
-    "${NCCL_CUDA_VERSION}" \
-    "${DIST_DIR}"
+# --- NVIDIA-only build steps ---
+GPU_BURN_WORKER_BIN="${DIST_DIR}/bee-gpu-burn-worker-linux-amd64"
+if [ "$BEE_GPU_VENDOR" = "nvidia" ]; then
+    echo ""
+    echo "=== downloading cuBLAS/cuBLASLt/cudart ${NCCL_CUDA_VERSION} userspace ==="
+    sh "${BUILDER_DIR}/build-cublas.sh" \
+        "${CUBLAS_VERSION}" \
+        "${CUDA_USERSPACE_VERSION}" \
+        "${NCCL_CUDA_VERSION}" \
+        "${DIST_DIR}"
 
-CUBLAS_CACHE="${DIST_DIR}/cublas-${CUBLAS_VERSION}+cuda${NCCL_CUDA_VERSION}"
+    CUBLAS_CACHE="${DIST_DIR}/cublas-${CUBLAS_VERSION}+cuda${NCCL_CUDA_VERSION}"
 
-GPU_STRESS_NEED_BUILD=1
-if [ -f "$GPU_STRESS_BIN" ] && [ "${BUILDER_DIR}/bee-gpu-stress.c" -ot "$GPU_STRESS_BIN" ]; then
-    GPU_STRESS_NEED_BUILD=0
+    GPU_STRESS_NEED_BUILD=1
+    if [ -f "$GPU_BURN_WORKER_BIN" ] && [ "${BUILDER_DIR}/bee-gpu-stress.c" -ot "$GPU_BURN_WORKER_BIN" ]; then
+        GPU_STRESS_NEED_BUILD=0
+    fi
+
+    if [ "$GPU_STRESS_NEED_BUILD" = "1" ]; then
+        echo "=== building bee-gpu-burn worker ==="
+        gcc -O2 -s -Wall -Wextra \
+            -I"${CUBLAS_CACHE}/include" \
+            -o "$GPU_BURN_WORKER_BIN" \
+            "${BUILDER_DIR}/bee-gpu-stress.c" \
+            -ldl -lm
+        echo "binary: $GPU_BURN_WORKER_BIN"
+    else
+        echo "=== bee-gpu-burn worker up to date, skipping build ==="
+    fi
 fi
 
-if [ "$GPU_STRESS_NEED_BUILD" = "1" ]; then
-    echo "=== building bee-gpu-stress ==="
-    gcc -O2 -s -Wall -Wextra \
-        -I"${CUBLAS_CACHE}/include" \
-        -o "$GPU_STRESS_BIN" \
-        "${BUILDER_DIR}/bee-gpu-stress.c" \
-        -ldl -lm
-    echo "binary: $GPU_STRESS_BIN"
-else
-    echo "=== bee-gpu-stress up to date, skipping build ==="
-fi
-
-echo "=== preparing staged overlay ==="
-# Sync builder config into work dir, preserving lb cache (chroot + packages).
-# We do NOT rm -rf BUILD_WORK_DIR so lb can reuse its chroot on repeat builds.
+echo "=== preparing staged overlay (${BEE_GPU_VENDOR}) ==="
 mkdir -p "${BUILD_WORK_DIR}" "${OVERLAY_STAGE_DIR}"
+
+# Sync builder config into variant work dir, preserving lb cache.
 rsync -a --delete \
     --exclude='cache/' \
     --exclude='chroot/' \
@@ -212,7 +449,10 @@ rsync -a --delete \
     --exclude='*.contents' \
     --exclude='*.files' \
     "${BUILDER_DIR}/" "${BUILD_WORK_DIR}/"
-# Also persist package cache to CACHE_ROOT so it survives a manual wipe of BUILD_WORK_DIR.
+
+# Share deb package cache across variants.
+# Restore: populate work dir cache from shared cache before build.
+# Persist: sync back after build (done after lb build below).
 LB_PKG_CACHE="${CACHE_ROOT}/lb-packages"
 mkdir -p "${LB_PKG_CACHE}"
 if [ -d "${BUILD_WORK_DIR}/cache/packages.chroot" ]; then
@@ -221,15 +461,26 @@ elif [ -d "${LB_PKG_CACHE}" ] && [ "$(ls -A "${LB_PKG_CACHE}" 2>/dev/null)" ]; t
     mkdir -p "${BUILD_WORK_DIR}/cache/packages.chroot"
     rsync -a "${LB_PKG_CACHE}/" "${BUILD_WORK_DIR}/cache/packages.chroot/"
 fi
+
 rsync -a "${OVERLAY_DIR}/" "${OVERLAY_STAGE_DIR}/"
 rm -f \
     "${OVERLAY_STAGE_DIR}/etc/bee-ssh-password-fallback" \
     "${OVERLAY_STAGE_DIR}/etc/bee-release" \
     "${OVERLAY_STAGE_DIR}/root/.ssh/authorized_keys" \
     "${OVERLAY_STAGE_DIR}/usr/local/bin/bee" \
-    "${OVERLAY_STAGE_DIR}/usr/local/bin/bee-gpu-stress" \
+    "${OVERLAY_STAGE_DIR}/usr/local/bin/bee-nccl-gpu-stress" \
+    "${OVERLAY_STAGE_DIR}/usr/local/bin/john" \
+    "${OVERLAY_STAGE_DIR}/usr/local/lib/bee/bee-gpu-burn-worker" \
     "${OVERLAY_STAGE_DIR}/usr/local/bin/bee-smoketest" \
     "${OVERLAY_STAGE_DIR}/usr/local/bin/all_reduce_perf"
+rm -rf \
+    "${OVERLAY_STAGE_DIR}/usr/local/lib/bee/john"
+
+# Remove NVIDIA-specific overlay files for non-nvidia variants
+if [ "$BEE_GPU_VENDOR" != "nvidia" ]; then
+    rm -f "${OVERLAY_STAGE_DIR}/usr/local/bin/bee-nvidia-load"
+    rm -f "${OVERLAY_STAGE_DIR}/etc/systemd/system/bee-nvidia.service"
+fi
 
 # --- inject authorized_keys for SSH access ---
 AUTHORIZED_KEYS_FILE="${OVERLAY_STAGE_DIR}/root/.ssh/authorized_keys"
@@ -268,8 +519,15 @@ fi
 mkdir -p "${OVERLAY_STAGE_DIR}/usr/local/bin"
 cp "${DIST_DIR}/bee-linux-amd64" "${OVERLAY_STAGE_DIR}/usr/local/bin/bee"
 chmod +x "${OVERLAY_STAGE_DIR}/usr/local/bin/bee"
-cp "${GPU_STRESS_BIN}" "${OVERLAY_STAGE_DIR}/usr/local/bin/bee-gpu-stress"
-chmod +x "${OVERLAY_STAGE_DIR}/usr/local/bin/bee-gpu-stress"
+
+if [ "$BEE_GPU_VENDOR" = "nvidia" ] && [ -f "$GPU_BURN_WORKER_BIN" ]; then
+    mkdir -p "${OVERLAY_STAGE_DIR}/usr/local/lib/bee" "${OVERLAY_STAGE_DIR}/usr/local/bin"
+    cp "${GPU_BURN_WORKER_BIN}" "${OVERLAY_STAGE_DIR}/usr/local/lib/bee/bee-gpu-burn-worker"
+    chmod +x "${OVERLAY_STAGE_DIR}/usr/local/lib/bee/bee-gpu-burn-worker"
+    chmod +x "${OVERLAY_STAGE_DIR}/usr/local/bin/bee-gpu-burn" 2>/dev/null || true
+    chmod +x "${OVERLAY_STAGE_DIR}/usr/local/bin/bee-john-gpu-stress" 2>/dev/null || true
+    chmod +x "${OVERLAY_STAGE_DIR}/usr/local/bin/bee-nccl-gpu-stress" 2>/dev/null || true
+fi
 
 # --- inject smoketest into overlay so it runs directly on the live CD ---
 cp "${BUILDER_DIR}/smoketest.sh" "${OVERLAY_STAGE_DIR}/usr/local/bin/bee-smoketest"
@@ -286,100 +544,170 @@ for tool in storcli64 sas2ircu sas3ircu arcconf ssacli; do
     fi
 done
 
-# --- build NVIDIA kernel modules ---
-echo ""
-echo "=== building NVIDIA ${NVIDIA_DRIVER_VERSION} modules ==="
-sh "${BUILDER_DIR}/build-nvidia-module.sh" "${NVIDIA_DRIVER_VERSION}" "${DIST_DIR}" "${DEBIAN_KERNEL_ABI}"
+# --- NVIDIA kernel modules and userspace libs ---
+if [ "$BEE_GPU_VENDOR" = "nvidia" ]; then
+    echo ""
+    echo "=== building NVIDIA ${NVIDIA_DRIVER_VERSION} modules ==="
+    sh "${BUILDER_DIR}/build-nvidia-module.sh" "${NVIDIA_DRIVER_VERSION}" "${DIST_DIR}" "${DEBIAN_KERNEL_ABI}"
 
-KVER="${DEBIAN_KERNEL_ABI}-amd64"
-NVIDIA_CACHE="${DIST_DIR}/nvidia-${NVIDIA_DRIVER_VERSION}-${KVER}"
+    KVER="${DEBIAN_KERNEL_ABI}-amd64"
+    NVIDIA_CACHE="${DIST_DIR}/nvidia-${NVIDIA_DRIVER_VERSION}-${KVER}"
 
-# Inject .ko files into overlay at /usr/local/lib/nvidia/
-OVERLAY_KMOD_DIR="${OVERLAY_DIR}/usr/local/lib/nvidia"
-OVERLAY_KMOD_DIR="${OVERLAY_STAGE_DIR}/usr/local/lib/nvidia"
-mkdir -p "${OVERLAY_KMOD_DIR}"
-cp "${NVIDIA_CACHE}/modules/"*.ko "${OVERLAY_KMOD_DIR}/"
+    # Inject .ko files into overlay at /usr/local/lib/nvidia/
+    OVERLAY_KMOD_DIR="${OVERLAY_STAGE_DIR}/usr/local/lib/nvidia"
+    mkdir -p "${OVERLAY_KMOD_DIR}"
+    cp "${NVIDIA_CACHE}/modules/"*.ko "${OVERLAY_KMOD_DIR}/"
 
-# Inject nvidia-smi and libnvidia-ml
-mkdir -p "${OVERLAY_STAGE_DIR}/usr/local/bin" "${OVERLAY_STAGE_DIR}/usr/lib"
-cp "${NVIDIA_CACHE}/bin/nvidia-smi" "${OVERLAY_STAGE_DIR}/usr/local/bin/"
-chmod +x "${OVERLAY_STAGE_DIR}/usr/local/bin/nvidia-smi"
-cp "${NVIDIA_CACHE}/bin/nvidia-bug-report.sh" "${OVERLAY_STAGE_DIR}/usr/local/bin/" 2>/dev/null || true
-chmod +x "${OVERLAY_STAGE_DIR}/usr/local/bin/nvidia-bug-report.sh" 2>/dev/null || true
-cp "${NVIDIA_CACHE}/lib/"* "${OVERLAY_STAGE_DIR}/usr/lib/" 2>/dev/null || true
+    # Inject nvidia-smi and libnvidia-ml
+    mkdir -p "${OVERLAY_STAGE_DIR}/usr/local/bin" "${OVERLAY_STAGE_DIR}/usr/lib"
+    cp "${NVIDIA_CACHE}/bin/nvidia-smi" "${OVERLAY_STAGE_DIR}/usr/local/bin/"
+    chmod +x "${OVERLAY_STAGE_DIR}/usr/local/bin/nvidia-smi"
+    cp "${NVIDIA_CACHE}/bin/nvidia-bug-report.sh" "${OVERLAY_STAGE_DIR}/usr/local/bin/" 2>/dev/null || true
+    chmod +x "${OVERLAY_STAGE_DIR}/usr/local/bin/nvidia-bug-report.sh" 2>/dev/null || true
+    cp "${NVIDIA_CACHE}/lib/"* "${OVERLAY_STAGE_DIR}/usr/lib/" 2>/dev/null || true
+    mkdir -p "${OVERLAY_STAGE_DIR}/etc/OpenCL/vendors"
+    printf 'libnvidia-opencl.so.1\n' > "${OVERLAY_STAGE_DIR}/etc/OpenCL/vendors/nvidia.icd"
 
-# Inject GSP firmware into /lib/firmware/nvidia/<version>/
-if [ -d "${NVIDIA_CACHE}/firmware" ] && [ "$(ls -A "${NVIDIA_CACHE}/firmware" 2>/dev/null)" ]; then
-    mkdir -p "${OVERLAY_STAGE_DIR}/lib/firmware/nvidia/${NVIDIA_DRIVER_VERSION}"
-    cp "${NVIDIA_CACHE}/firmware/"* "${OVERLAY_STAGE_DIR}/lib/firmware/nvidia/${NVIDIA_DRIVER_VERSION}/"
-    echo "=== firmware: $(ls "${OVERLAY_STAGE_DIR}/lib/firmware/nvidia/${NVIDIA_DRIVER_VERSION}/" | wc -l) files injected ==="
+    # Inject GSP firmware into /lib/firmware/nvidia/<version>/
+    if [ -d "${NVIDIA_CACHE}/firmware" ] && [ "$(ls -A "${NVIDIA_CACHE}/firmware" 2>/dev/null)" ]; then
+        mkdir -p "${OVERLAY_STAGE_DIR}/lib/firmware/nvidia/${NVIDIA_DRIVER_VERSION}"
+        cp "${NVIDIA_CACHE}/firmware/"* "${OVERLAY_STAGE_DIR}/lib/firmware/nvidia/${NVIDIA_DRIVER_VERSION}/"
+        echo "=== firmware: $(ls "${OVERLAY_STAGE_DIR}/lib/firmware/nvidia/${NVIDIA_DRIVER_VERSION}/" | wc -l) files injected ==="
+    fi
+
+    # --- build / download NCCL ---
+    echo ""
+    echo "=== downloading NCCL ${NCCL_VERSION}+cuda${NCCL_CUDA_VERSION} ==="
+    sh "${BUILDER_DIR}/build-nccl.sh" "${NCCL_VERSION}" "${NCCL_CUDA_VERSION}" "${DIST_DIR}" "${NCCL_SHA256:-}"
+
+    NCCL_CACHE="${DIST_DIR}/nccl-${NCCL_VERSION}+cuda${NCCL_CUDA_VERSION}"
+
+    # Inject libnccl.so.* into overlay alongside other NVIDIA userspace libs
+    cp "${NCCL_CACHE}/lib/"* "${OVERLAY_STAGE_DIR}/usr/lib/"
+    echo "=== NCCL: $(ls "${NCCL_CACHE}/lib/" | wc -l) files injected into /usr/lib/ ==="
+
+    # Inject cuBLAS/cuBLASLt/cudart runtime libs used by the bee-gpu-burn worker tensor-core GEMM path
+    cp "${CUBLAS_CACHE}/lib/"* "${OVERLAY_STAGE_DIR}/usr/lib/"
+    echo "=== cuBLAS: $(ls "${CUBLAS_CACHE}/lib/" | wc -l) files injected into /usr/lib/ ==="
+
+    # --- build nccl-tests ---
+    echo ""
+    echo "=== building nccl-tests ${NCCL_TESTS_VERSION} ==="
+    sh "${BUILDER_DIR}/build-nccl-tests.sh" \
+        "${NCCL_TESTS_VERSION}" \
+        "${NCCL_VERSION}" \
+        "${NCCL_CUDA_VERSION}" \
+        "${DIST_DIR}" \
+        "${NVCC_VERSION}" \
+        "${DEBIAN_VERSION}"
+
+    NCCL_TESTS_CACHE="${DIST_DIR}/nccl-tests-${NCCL_TESTS_VERSION}"
+    cp "${NCCL_TESTS_CACHE}/bin/all_reduce_perf" "${OVERLAY_STAGE_DIR}/usr/local/bin/all_reduce_perf"
+    chmod +x "${OVERLAY_STAGE_DIR}/usr/local/bin/all_reduce_perf"
+    cp "${NCCL_TESTS_CACHE}/lib/"* "${OVERLAY_STAGE_DIR}/usr/lib/" 2>/dev/null || true
+    echo "=== all_reduce_perf injected ==="
+
+    echo ""
+    echo "=== building john jumbo ${JOHN_JUMBO_COMMIT} ==="
+    sh "${BUILDER_DIR}/build-john.sh" "${JOHN_JUMBO_COMMIT}" "${DIST_DIR}"
+    JOHN_CACHE="${DIST_DIR}/john-${JOHN_JUMBO_COMMIT}"
+    mkdir -p "${OVERLAY_STAGE_DIR}/usr/local/lib/bee/john"
+    rsync -a --delete "${JOHN_CACHE}/run/" "${OVERLAY_STAGE_DIR}/usr/local/lib/bee/john/run/"
+    ln -sfn ../lib/bee/john/run/john "${OVERLAY_STAGE_DIR}/usr/local/bin/john"
+    chmod +x "${OVERLAY_STAGE_DIR}/usr/local/lib/bee/john/run/john"
+    echo "=== john injected ==="
 fi
 
-# --- build / download NCCL ---
-echo ""
-echo "=== downloading NCCL ${NCCL_VERSION}+cuda${NCCL_CUDA_VERSION} ==="
-sh "${BUILDER_DIR}/build-nccl.sh" "${NCCL_VERSION}" "${NCCL_CUDA_VERSION}" "${DIST_DIR}" "${NCCL_SHA256:-}"
-
-NCCL_CACHE="${DIST_DIR}/nccl-${NCCL_VERSION}+cuda${NCCL_CUDA_VERSION}"
-
-# Inject libnccl.so.* into overlay alongside other NVIDIA userspace libs
-cp "${NCCL_CACHE}/lib/"* "${OVERLAY_STAGE_DIR}/usr/lib/"
-echo "=== NCCL: $(ls "${NCCL_CACHE}/lib/" | wc -l) files injected into /usr/lib/ ==="
-
-# Inject cuBLAS/cuBLASLt/cudart runtime libs used by bee-gpu-stress tensor-core GEMM path
-cp "${CUBLAS_CACHE}/lib/"* "${OVERLAY_STAGE_DIR}/usr/lib/"
-echo "=== cuBLAS: $(ls "${CUBLAS_CACHE}/lib/" | wc -l) files injected into /usr/lib/ ==="
-
-# --- build nccl-tests ---
-echo ""
-echo "=== building nccl-tests ${NCCL_TESTS_VERSION} ==="
-sh "${BUILDER_DIR}/build-nccl-tests.sh" \
-    "${NCCL_TESTS_VERSION}" \
-    "${NCCL_VERSION}" \
-    "${NCCL_CUDA_VERSION}" \
-    "${DIST_DIR}" \
-    "${NVCC_VERSION}" \
-    "${DEBIAN_VERSION}"
-
-NCCL_TESTS_CACHE="${DIST_DIR}/nccl-tests-${NCCL_TESTS_VERSION}"
-cp "${NCCL_TESTS_CACHE}/bin/all_reduce_perf" "${OVERLAY_STAGE_DIR}/usr/local/bin/all_reduce_perf"
-chmod +x "${OVERLAY_STAGE_DIR}/usr/local/bin/all_reduce_perf"
-echo "=== all_reduce_perf injected ==="
-
 # --- embed build metadata ---
 mkdir -p "${OVERLAY_STAGE_DIR}/etc"
 BUILD_DATE="$(date +%Y-%m-%d)"
 GIT_COMMIT="$(git -C "${REPO_ROOT}" rev-parse --short HEAD 2>/dev/null || echo unknown)"
-cat > "${OVERLAY_STAGE_DIR}/etc/bee-release" <<EOF
-BEE_ISO_VERSION=${ISO_VERSION_EFFECTIVE}
-BEE_AUDIT_VERSION=${AUDIT_VERSION_EFFECTIVE}
-BUILD_DATE=${BUILD_DATE}
-GIT_COMMIT=${GIT_COMMIT}
-DEBIAN_VERSION=${DEBIAN_VERSION}
-DEBIAN_KERNEL_ABI=${DEBIAN_KERNEL_ABI}
-NVIDIA_DRIVER_VERSION=${NVIDIA_DRIVER_VERSION}
+
+if [ "$BEE_GPU_VENDOR" = "nvidia" ]; then
+    GPU_VERSION_LINE="NVIDIA_DRIVER_VERSION=${NVIDIA_DRIVER_VERSION}
 NCCL_VERSION=${NCCL_VERSION}
 NCCL_CUDA_VERSION=${NCCL_CUDA_VERSION}
 CUBLAS_VERSION=${CUBLAS_VERSION}
 CUDA_USERSPACE_VERSION=${CUDA_USERSPACE_VERSION}
 NCCL_TESTS_VERSION=${NCCL_TESTS_VERSION}
+JOHN_JUMBO_COMMIT=${JOHN_JUMBO_COMMIT}"
+    GPU_BUILD_INFO="nvidia:${NVIDIA_DRIVER_VERSION}"
+elif [ "$BEE_GPU_VENDOR" = "amd" ]; then
+    GPU_VERSION_LINE="ROCM_VERSION=${ROCM_VERSION}"
+    GPU_BUILD_INFO="rocm:${ROCM_VERSION}"
+else
+    GPU_VERSION_LINE=""
+    GPU_BUILD_INFO="nogpu"
+fi
+
+cat > "${OVERLAY_STAGE_DIR}/etc/bee-release" <<EOF
+BEE_ISO_VERSION=${ISO_VERSION_EFFECTIVE}
+BEE_AUDIT_VERSION=${AUDIT_VERSION_EFFECTIVE}
+BEE_GPU_VENDOR=${BEE_GPU_VENDOR}
+BUILD_DATE=${BUILD_DATE}
+GIT_COMMIT=${GIT_COMMIT}
+DEBIAN_VERSION=${DEBIAN_VERSION}
+DEBIAN_KERNEL_ABI=${DEBIAN_KERNEL_ABI}
+${GPU_VERSION_LINE}
 EOF
 
+# Write GPU vendor marker for hooks
+echo "${BEE_GPU_VENDOR}" > "${OVERLAY_STAGE_DIR}/etc/bee-gpu-vendor"
+
 # Patch motd with build info
-BEE_BUILD_INFO="${BUILD_DATE} git:${GIT_COMMIT} debian:${DEBIAN_VERSION} nvidia:${NVIDIA_DRIVER_VERSION}"
+BEE_BUILD_INFO="${BUILD_DATE} git:${GIT_COMMIT} debian:${DEBIAN_VERSION} ${GPU_BUILD_INFO}"
 if [ -f "${OVERLAY_STAGE_DIR}/etc/motd" ]; then
     sed "s/%%BUILD_INFO%%/${BEE_BUILD_INFO}/" "${OVERLAY_STAGE_DIR}/etc/motd" \
         > "${OVERLAY_STAGE_DIR}/etc/motd.patched"
     mv "${OVERLAY_STAGE_DIR}/etc/motd.patched" "${OVERLAY_STAGE_DIR}/etc/motd"
 fi
 
-# --- substitute version placeholders in package list ---
-sed -i \
-    -e "s/%%DCGM_VERSION%%/${DCGM_VERSION}/g" \
-    -e "s/%%ROCM_VERSION%%/${ROCM_VERSION}/g" \
-    -e "s/%%ROCM_SMI_VERSION%%/${ROCM_SMI_VERSION}/g" \
-    "${BUILD_WORK_DIR}/config/package-lists/bee.list.chroot" \
-    "${BUILD_WORK_DIR}/config/archives/rocm.list.chroot"
+# --- copy variant-specific package list, remove all other variant lists ---
+# live-build picks up ALL .list.chroot files — delete other variants to avoid conflicts.
+cp "${BUILD_WORK_DIR}/config/package-lists/bee-${BEE_GPU_VENDOR}.list.chroot" \
+   "${BUILD_WORK_DIR}/config/package-lists/bee-gpu.list.chroot"
+rm -f "${BUILD_WORK_DIR}/config/package-lists/bee-nvidia.list.chroot" \
+      "${BUILD_WORK_DIR}/config/package-lists/bee-amd.list.chroot" \
+      "${BUILD_WORK_DIR}/config/package-lists/bee-nogpu.list.chroot"
+
+# --- remove archives for the other vendor(s) ---
+if [ "$BEE_GPU_VENDOR" = "nvidia" ]; then
+    rm -f "${BUILD_WORK_DIR}/config/archives/rocm.list.chroot" \
+          "${BUILD_WORK_DIR}/config/archives/rocm.key.chroot"
+elif [ "$BEE_GPU_VENDOR" = "amd" ]; then
+    rm -f "${BUILD_WORK_DIR}/config/archives/nvidia-cuda.list.chroot" \
+          "${BUILD_WORK_DIR}/config/archives/nvidia-cuda.key.chroot"
+else
+    # nogpu: remove both
+    rm -f "${BUILD_WORK_DIR}/config/archives/rocm.list.chroot" \
+          "${BUILD_WORK_DIR}/config/archives/rocm.key.chroot" \
+          "${BUILD_WORK_DIR}/config/archives/nvidia-cuda.list.chroot" \
+          "${BUILD_WORK_DIR}/config/archives/nvidia-cuda.key.chroot"
+fi
+
+# --- substitute version placeholders in package list and archive ---
+if [ "$BEE_GPU_VENDOR" = "nvidia" ]; then
+    sed -i \
+        -e "s/%%DCGM_VERSION%%/${DCGM_VERSION}/g" \
+        "${BUILD_WORK_DIR}/config/package-lists/bee-gpu.list.chroot"
+elif [ "$BEE_GPU_VENDOR" = "amd" ]; then
+    sed -i \
+        -e "s/%%ROCM_VERSION%%/${ROCM_VERSION}/g" \
+        -e "s/%%ROCM_SMI_VERSION%%/${ROCM_SMI_VERSION}/g" \
+        -e "s/%%ROCM_BANDWIDTH_TEST_VERSION%%/${ROCM_BANDWIDTH_TEST_VERSION}/g" \
+        -e "s/%%ROCM_VALIDATION_SUITE_VERSION%%/${ROCM_VALIDATION_SUITE_VERSION}/g" \
+        -e "s/%%ROCBLAS_VERSION%%/${ROCBLAS_VERSION}/g" \
+        -e "s/%%ROCRAND_VERSION%%/${ROCRAND_VERSION}/g" \
+        -e "s/%%HIP_RUNTIME_AMD_VERSION%%/${HIP_RUNTIME_AMD_VERSION}/g" \
+        -e "s/%%HIPBLASLT_VERSION%%/${HIPBLASLT_VERSION}/g" \
+        -e "s/%%COMGR_VERSION%%/${COMGR_VERSION}/g" \
+        "${BUILD_WORK_DIR}/config/package-lists/bee-gpu.list.chroot"
+    if [ -f "${BUILD_WORK_DIR}/config/archives/rocm.list.chroot" ]; then
+        sed -i \
+            -e "s/%%ROCM_VERSION%%/${ROCM_VERSION}/g" \
+            "${BUILD_WORK_DIR}/config/archives/rocm.list.chroot"
+    fi
+fi
 
 # --- sync overlay into live-build includes.chroot ---
 LB_DIR="${BUILD_WORK_DIR}"
@@ -395,20 +723,33 @@ fi
 
 # --- build ISO using live-build ---
 echo ""
-echo "=== building ISO (live-build) ==="
+echo "=== building ISO (live-build, variant: ${BEE_GPU_VENDOR}) ==="
+
+# Export for auto/config
+BEE_GPU_VENDOR_UPPER="$(echo "${BEE_GPU_VENDOR}" | tr 'a-z' 'A-Z')"
+export BEE_GPU_VENDOR_UPPER
 
 cd "${LB_DIR}"
 lb clean 2>&1 | tail -3
 lb config 2>&1 | tail -5
+dump_memtest_debug "pre-build" "${LB_DIR}"
 lb build 2>&1
 
+# --- persist deb package cache back to shared location ---
+# This allows the second variant to reuse all downloaded packages.
+if [ -d "${BUILD_WORK_DIR}/cache/packages.chroot" ]; then
+    rsync -a "${BUILD_WORK_DIR}/cache/packages.chroot/" "${LB_PKG_CACHE}/"
+    echo "=== package cache synced to ${LB_PKG_CACHE} ==="
+fi
+
 # live-build outputs live-image-amd64.hybrid.iso in LB_DIR
 ISO_RAW="${LB_DIR}/live-image-amd64.hybrid.iso"
-ISO_OUT="${DIST_DIR}/bee-debian${DEBIAN_VERSION}-v${ISO_VERSION_EFFECTIVE}-amd64.iso"
 if [ -f "$ISO_RAW" ]; then
+    dump_memtest_debug "post-build" "${LB_DIR}" "$ISO_RAW"
+    validate_iso_memtest "$ISO_RAW"
     cp "$ISO_RAW" "$ISO_OUT"
     echo ""
-    echo "=== done ==="
+    echo "=== done (${BEE_GPU_VENDOR}) ==="
     echo "ISO: $ISO_OUT"
     if command -v stat >/dev/null 2>&1; then
         ISO_SIZE_BYTES="$(stat -c '%s' "$ISO_OUT" 2>/dev/null || stat -f '%z' "$ISO_OUT")"

iso/builder/config/bootloaders/grub-pc/grub.cfg

@@ -10,25 +10,35 @@ echo "  ╚══════╝╚═╝  ╚═╝╚══════╝
 echo ""
 
 menuentry "EASY-BEE" {
-    linux   @KERNEL_LIVE@ @APPEND_LIVE@ bee.nvidia.mode=normal
+    linux   @KERNEL_LIVE@ @APPEND_LIVE@ nomodeset bee.nvidia.mode=normal net.ifnames=0 biosdevname=0 mitigations=off transparent_hugepage=always numa_balancing=disable nowatchdog nosoftlockup
     initrd  @INITRD_LIVE@
 }
 
 menuentry "EASY-BEE (load to RAM)" {
-    linux   @KERNEL_LIVE@ @APPEND_LIVE@ toram bee.nvidia.mode=normal
+    linux   @KERNEL_LIVE@ @APPEND_LIVE@ toram nomodeset bee.nvidia.mode=normal net.ifnames=0 biosdevname=0 mitigations=off transparent_hugepage=always numa_balancing=disable nowatchdog nosoftlockup
     initrd  @INITRD_LIVE@
 }
 
 menuentry "EASY-BEE (NVIDIA GSP=off)" {
-    linux   @KERNEL_LIVE@ @APPEND_LIVE@ bee.nvidia.mode=gsp-off
+    linux   @KERNEL_LIVE@ @APPEND_LIVE@ nomodeset bee.nvidia.mode=gsp-off net.ifnames=0 biosdevname=0 mitigations=off transparent_hugepage=always numa_balancing=disable nowatchdog nosoftlockup
     initrd  @INITRD_LIVE@
 }
 
 menuentry "EASY-BEE (fail-safe)" {
-    linux   @KERNEL_LIVE@ @APPEND_LIVE@ bee.nvidia.mode=gsp-off memtest noapic noapm nodma nomce nolapic nosmp vga=normal
+    linux   @KERNEL_LIVE@ @APPEND_LIVE@ bee.nvidia.mode=gsp-off memtest noapic noapm nodma nomce nolapic nosmp vga=normal net.ifnames=0 biosdevname=0
     initrd  @INITRD_LIVE@
 }
 
+if [ "${grub_platform}" = "efi" ]; then
+    menuentry "Memory Test (memtest86+)" {
+        chainloader /boot/memtest86+x64.efi
+    }
+else
+    menuentry "Memory Test (memtest86+)" {
+        linux16 /boot/memtest86+x64.bin
+    }
+fi
+
 if [ "${grub_platform}" = "efi" ]; then
     menuentry "UEFI Firmware Settings" {
         fwsetup

iso/builder/config/bootloaders/isolinux/live.cfg.in

@@ -15,10 +15,14 @@ label live-@FLAVOUR@-gsp-off
     menu label EASY-BEE (^NVIDIA GSP=off)
     linux @LINUX@
     initrd @INITRD@
-    append @APPEND_LIVE@ bee.nvidia.mode=gsp-off
+    append @APPEND_LIVE@ nomodeset bee.nvidia.mode=gsp-off
 
 label live-@FLAVOUR@-failsafe
     menu label EASY-BEE (^fail-safe)
     linux @LINUX@
     initrd @INITRD@
     append @APPEND_LIVE@ bee.nvidia.mode=gsp-off memtest noapic noapm nodma nomce nolapic nosmp vga=normal
+
+label memtest
+    menu label ^Memory Test (memtest86+)
+    linux /boot/memtest86+x64.bin

iso/builder/config/hooks/normal/9000-bee-setup.hook.chroot

@@ -5,25 +5,27 @@ set -e
 
 echo "=== bee chroot setup ==="
 
+GPU_VENDOR=$(cat /etc/bee-gpu-vendor 2>/dev/null || echo nvidia)
+echo "=== GPU vendor: ${GPU_VENDOR} ==="
+
 ensure_bee_console_user() {
     if id bee >/dev/null 2>&1; then
-        usermod -d /home/bee -s /bin/sh bee 2>/dev/null || true
+        usermod -d /home/bee -s /bin/bash bee 2>/dev/null || true
     else
-        useradd -d /home/bee -m -s /bin/sh -U bee
+        useradd -d /home/bee -m -s /bin/bash -U bee
     fi
 
     mkdir -p /home/bee
     chown -R bee:bee /home/bee
     echo "bee:eeb" | chpasswd
-    usermod -aG sudo,video,input bee 2>/dev/null || true
+    groupadd -f ipmi 2>/dev/null || true
+    usermod -aG sudo,video,input,render,ipmi bee 2>/dev/null || true
 }
 
 ensure_bee_console_user
 
-# Enable bee services
-systemctl enable nvidia-dcgm.service 2>/dev/null || true
+# Enable common bee services
 systemctl enable bee-network.service
-systemctl enable bee-nvidia.service
 systemctl enable bee-preflight.service
 systemctl enable bee-audit.service
 systemctl enable bee-web.service
@@ -35,23 +37,37 @@ systemctl enable serial-getty@ttyS0.service 2>/dev/null || true
 systemctl enable serial-getty@ttyS1.service 2>/dev/null || true
 systemctl enable bee-journal-mirror@ttyS1.service 2>/dev/null || true
 
+# Enable GPU-vendor specific services
+if [ "$GPU_VENDOR" = "nvidia" ]; then
+    systemctl enable nvidia-dcgm.service 2>/dev/null || true
+    systemctl enable bee-nvidia.service
+elif [ "$GPU_VENDOR" = "amd" ]; then
+    # ROCm symlinks (packages install to /opt/rocm-*/bin/)
+    for tool in rocm-smi rocm-bandwidth-test rvs; do
+        if [ ! -e /usr/local/bin/${tool} ]; then
+            bin_path="$(find /opt -path "*/bin/${tool}" -type f 2>/dev/null | sort | tail -1)"
+            [ -n "${bin_path}" ] && ln -sf "${bin_path}" /usr/local/bin/${tool}
+        fi
+    done
+fi
+# nogpu: no GPU services needed
+
 # Ensure scripts are executable
 chmod +x /usr/local/bin/bee-network.sh  2>/dev/null || true
-chmod +x /usr/local/bin/bee-nvidia-load 2>/dev/null || true
 chmod +x /usr/local/bin/bee-sshsetup   2>/dev/null || true
 chmod +x /usr/local/bin/bee-smoketest  2>/dev/null || true
 chmod +x /usr/local/bin/bee            2>/dev/null || true
 chmod +x /usr/local/bin/bee-log-run    2>/dev/null || true
+if [ "$GPU_VENDOR" = "nvidia" ]; then
+    chmod +x /usr/local/bin/bee-nvidia-load 2>/dev/null || true
+    chmod +x /usr/local/bin/bee-gpu-burn 2>/dev/null || true
+    chmod +x /usr/local/bin/bee-john-gpu-stress 2>/dev/null || true
+    chmod +x /usr/local/bin/bee-nccl-gpu-stress 2>/dev/null || true
+fi
 
 # Reload udev rules
 udevadm control --reload-rules 2>/dev/null || true
 
-# rocm-smi symlink (package installs to /opt/rocm-*/bin/rocm-smi)
-if [ ! -e /usr/local/bin/rocm-smi ]; then
-    smi_path="$(find /opt -path '*/bin/rocm-smi' -type f 2>/dev/null | sort | tail -1)"
-    [ -n "${smi_path}" ] && ln -sf "${smi_path}" /usr/local/bin/rocm-smi
-fi
-
 # Create export directory
 mkdir -p /appdata/bee/export
 
@@ -59,4 +75,4 @@ if [ -f /etc/sudoers.d/bee ]; then
     chmod 0440 /etc/sudoers.d/bee
 fi
 
-echo "=== bee chroot setup complete ==="
+echo "=== bee chroot setup complete (${GPU_VENDOR}) ==="

iso/builder/config/package-lists/bee-amd.list.chroot

@@ -0,0 +1,9 @@
+# AMD ROCm — GPU monitoring, bandwidth test, and compute stress (RVS GST)
+rocm-smi-lib=%%ROCM_SMI_VERSION%%
+rocm-bandwidth-test=%%ROCM_BANDWIDTH_TEST_VERSION%%
+rocm-validation-suite=%%ROCM_VALIDATION_SUITE_VERSION%%
+rocblas=%%ROCBLAS_VERSION%%
+rocrand=%%ROCRAND_VERSION%%
+hip-runtime-amd=%%HIP_RUNTIME_AMD_VERSION%%
+hipblaslt=%%HIPBLASLT_VERSION%%
+comgr=%%COMGR_VERSION%%

iso/builder/config/package-lists/bee-nogpu.list.chroot

@@ -0,0 +1 @@
+# No GPU variant — no NVIDIA, no AMD/ROCm packages

iso/builder/config/package-lists/bee-nvidia.list.chroot

@@ -0,0 +1,8 @@
+# NVIDIA DCGM (Data Center GPU Manager) — dcgmi diag for acceptance testing.
+# DCGM 4 is packaged per CUDA major. The image ships NVIDIA driver 590 with CUDA 13 userspace,
+# so install the CUDA 13 build plus proprietary diagnostic components explicitly.
+datacenter-gpu-manager-4-cuda13=1:%%DCGM_VERSION%%
+datacenter-gpu-manager-4-proprietary=1:%%DCGM_VERSION%%
+datacenter-gpu-manager-4-proprietary-cuda13=1:%%DCGM_VERSION%%
+ocl-icd-libopencl1
+clinfo

iso/builder/config/package-lists/bee.list.chroot

@@ -21,8 +21,15 @@ openssh-server
 # Disk installer
 squashfs-tools
 parted
+# Keep GRUB install tools without selecting a single active platform package.
+# grub-pc and grub-efi-amd64 conflict with each other, but grub2-common
+# provides grub-install/update-grub and the *-bin packages provide BIOS/UEFI modules.
+grub2-common
 grub-pc-bin
 grub-efi-amd64-bin
+grub-efi-amd64-signed
+shim-signed
+efibootmgr
 
 # Filesystem support for USB export targets
 exfatprogs
@@ -39,11 +46,13 @@ vim-tiny
 mc
 htop
 nvtop
+btop
 sudo
 zstd
 mstflint
 memtester
 stress-ng
+stressapptest
 
 # QR codes (for displaying audit results)
 qrencode
@@ -70,11 +79,5 @@ firmware-bnx2x
 firmware-cavium
 firmware-qlogic
 
-# NVIDIA DCGM (Data Center GPU Manager) — dcgmi diag for acceptance testing
-datacenter-gpu-manager=1:%%DCGM_VERSION%%
-
-# AMD ROCm SMI — GPU monitoring for Instinct cards (repo: rocm/apt/6.3.4 jammy)
-rocm-smi-lib=%%ROCM_SMI_VERSION%%
-
 # glibc compat helpers (for any external binaries that need it)
 libc6

iso/builder/smoketest.sh

@@ -39,7 +39,7 @@ info "nvidia boot mode: ${NVIDIA_BOOT_MODE}"
 # --- PATH & binaries ---
 echo "-- PATH & binaries --"
 for tool in dmidecode smartctl nvme ipmitool lspci bee; do
-    if p=$(PATH="/usr/local/bin:$PATH" command -v "$tool" 2>/dev/null); then
+    if p=$(PATH="/usr/local/bin:/usr/sbin:/sbin:$PATH" command -v "$tool" 2>/dev/null); then
         ok "$tool found: $p"
     else
         fail "$tool: NOT FOUND"

iso/overlay/etc/modules-load.d/bee-ipmi.conf

@@ -0,0 +1,3 @@
+# Load IPMI modules for fan/sensor/power monitoring via ipmitool
+ipmi_si
+ipmi_devintf

iso/overlay/etc/profile.d/bee.sh

@@ -1,4 +1,4 @@
-export PATH="$PATH:/usr/local/bin:/opt/rocm/bin:/opt/rocm/sbin"
+export PATH="$PATH:/usr/local/bin:/usr/sbin:/sbin:/opt/rocm/bin:/opt/rocm/sbin"
 
 # Print web UI URLs on the local console at login.
 if [ -z "${SSH_CONNECTION:-}" ] \

iso/overlay/etc/systemd/system/bee-audit.service

@@ -1,14 +1,9 @@
 [Unit]
-Description=Bee: run hardware audit
-After=bee-network.service bee-nvidia.service bee-preflight.service
-Before=bee-web.service
+Description=Bee: on-demand hardware audit (not started automatically)
 
 [Service]
 Type=oneshot
-ExecStart=/usr/local/bin/bee-log-run /appdata/bee/export/bee-audit.log /bin/sh -c '/usr/local/bin/bee audit --runtime livecd --output file:/appdata/bee/export/bee-audit.json; rc=$?; if [ "$rc" -ne 0 ]; then echo "[bee-audit] WARN: audit exited with rc=$rc"; fi; exit 0'
+RemainAfterExit=yes
+ExecStart=/bin/sh -c 'curl -sf -X POST http://localhost/api/audit/run >/dev/null'
 StandardOutput=journal
 StandardError=journal
-RemainAfterExit=yes
-
-[Install]
-WantedBy=multi-user.target

iso/overlay/etc/systemd/system/bee-web.service

@@ -1,7 +1,5 @@
 [Unit]
 Description=Bee: hardware audit web viewer
-After=bee-network.service bee-audit.service
-Wants=bee-audit.service
 
 [Service]
 Type=simple
@@ -10,6 +8,10 @@ Restart=always
 RestartSec=2
 StandardOutput=journal
 StandardError=journal
+LimitMEMLOCK=infinity
+# Keep the web server responsive during GPU/CPU stress (children inherit nice+10
+# via Setpriority in runCmdJob, but the bee-web parent stays at 0).
+Nice=0
 
 [Install]
 WantedBy=multi-user.target

iso/overlay/etc/systemd/system/lightdm.service.d/bee-limits.conf

@@ -4,3 +4,6 @@
 RestartSec=10
 StartLimitIntervalSec=60
 StartLimitBurst=3
+# Raise scheduling priority of the X server so the graphical console (KVM/IPMI)
+# stays responsive during GPU/CPU stress tests running at nice+10.
+Nice=-5

iso/overlay/etc/udev/rules.d/99-ipmi.rules

@@ -0,0 +1,2 @@
+# Allow ipmi group to access IPMI device without root
+KERNEL=="ipmi[0-9]*", GROUP="ipmi", MODE="0660"

iso/overlay/usr/local/bin/bee-gpu-burn

@@ -0,0 +1,93 @@
+#!/bin/sh
+set -eu
+
+SECONDS=5
+SIZE_MB=64
+DEVICES=""
+EXCLUDE=""
+WORKER="/usr/local/lib/bee/bee-gpu-burn-worker"
+
+usage() {
+    echo "usage: $0 [--seconds N] [--size-mb N] [--devices 0,1] [--exclude 2,3]" >&2
+    exit 2
+}
+
+normalize_list() {
+    echo "${1:-}" | tr ',' '\n' | sed 's/[[:space:]]//g' | awk 'NF' | sort -n | uniq | paste -sd, -
+}
+
+contains_csv() {
+    needle="$1"
+    haystack="${2:-}"
+    echo ",${haystack}," | grep -q ",${needle},"
+}
+
+while [ "$#" -gt 0 ]; do
+    case "$1" in
+        --seconds|-t) [ "$#" -ge 2 ] || usage; SECONDS="$2"; shift 2 ;;
+        --size-mb|-m) [ "$#" -ge 2 ] || usage; SIZE_MB="$2"; shift 2 ;;
+        --devices) [ "$#" -ge 2 ] || usage; DEVICES="$2"; shift 2 ;;
+        --exclude) [ "$#" -ge 2 ] || usage; EXCLUDE="$2"; shift 2 ;;
+        *) usage ;;
+    esac
+done
+
+[ -x "${WORKER}" ] || { echo "bee-gpu-burn worker not found: ${WORKER}" >&2; exit 1; }
+
+ALL_DEVICES=$(nvidia-smi --query-gpu=index --format=csv,noheader,nounits 2>/dev/null | sed 's/[[:space:]]//g' | awk 'NF' | paste -sd, -)
+[ -n "${ALL_DEVICES}" ] || { echo "nvidia-smi found no NVIDIA GPUs" >&2; exit 1; }
+
+DEVICES=$(normalize_list "${DEVICES}")
+EXCLUDE=$(normalize_list "${EXCLUDE}")
+SELECTED="${DEVICES}"
+if [ -z "${SELECTED}" ]; then
+    SELECTED="${ALL_DEVICES}"
+fi
+
+FINAL=""
+for id in $(echo "${SELECTED}" | tr ',' ' '); do
+    [ -n "${id}" ] || continue
+    if contains_csv "${id}" "${EXCLUDE}"; then
+        continue
+    fi
+    if [ -z "${FINAL}" ]; then
+        FINAL="${id}"
+    else
+        FINAL="${FINAL},${id}"
+    fi
+done
+
+[ -n "${FINAL}" ] || { echo "no NVIDIA GPUs selected after filters" >&2; exit 1; }
+
+echo "loader=bee-gpu-burn"
+echo "selected_gpus=${FINAL}"
+
+TMP_DIR=$(mktemp -d)
+trap 'rm -rf "${TMP_DIR}"' EXIT INT TERM
+
+WORKERS=""
+for id in $(echo "${FINAL}" | tr ',' ' '); do
+    log="${TMP_DIR}/gpu-${id}.log"
+    echo "starting gpu ${id}"
+    "${WORKER}" --device "${id}" --seconds "${SECONDS}" --size-mb "${SIZE_MB}" >"${log}" 2>&1 &
+    pid=$!
+    WORKERS="${WORKERS} ${pid}:${id}:${log}"
+done
+
+status=0
+for spec in ${WORKERS}; do
+    pid=${spec%%:*}
+    rest=${spec#*:}
+    id=${rest%%:*}
+    log=${rest#*:}
+    if wait "${pid}"; then
+        echo "gpu ${id} finished: OK"
+    else
+        rc=$?
+        echo "gpu ${id} finished: FAILED rc=${rc}"
+        status=1
+    fi
+    sed "s/^/[gpu ${id}] /" "${log}" || true
+done
+
+exit "${status}"

iso/overlay/usr/local/bin/bee-install

@@ -12,17 +12,55 @@
 
 set -euo pipefail
 
+usage() {
+    cat >&2 <<'EOF'
+Usage: bee-install <device> [logfile]
+
+  Installs the live system to a local disk (WIPES the target).
+
+  device   Target block device, e.g. /dev/sda or /dev/nvme0n1
+           Must be a hard disk or NVMe — NOT a CD-ROM (/dev/sr*)
+  logfile  Optional path for progress log (default: /tmp/bee-install.log)
+
+Examples:
+  bee-install /dev/sda
+  bee-install /dev/nvme0n1
+  bee-install /dev/sdb /tmp/my-install.log
+
+WARNING: ALL DATA ON <device> WILL BE ERASED.
+
+Layout (UEFI):  GPT — partition 1: EFI 512MB vfat, partition 2: root ext4
+Layout (BIOS):  MBR — partition 1: root ext4
+EOF
+    exit 1
+}
+
 DEVICE="${1:-}"
 LOGFILE="${2:-/tmp/bee-install.log}"
 
-if [ -z "$DEVICE" ]; then
-    echo "Usage: bee-install <device> [logfile]" >&2
-    exit 1
+if [ -z "$DEVICE" ] || [ "$DEVICE" = "--help" ] || [ "$DEVICE" = "-h" ]; then
+    usage
 fi
 if [ ! -b "$DEVICE" ]; then
     echo "ERROR: $DEVICE is not a block device" >&2
+    echo "Run 'lsblk' to list available disks." >&2
     exit 1
 fi
+# Block CD-ROM devices
+case "$DEVICE" in
+    /dev/sr*|/dev/scd*)
+        echo "ERROR: $DEVICE is a CD-ROM/optical device — cannot install to it." >&2
+        echo "Run 'lsblk' to find the target disk (e.g. /dev/sda, /dev/nvme0n1)." >&2
+        exit 1
+        ;;
+esac
+# Check required tools
+for tool in parted mkfs.vfat mkfs.ext4 unsquashfs grub-install update-grub; do
+    if ! command -v "$tool" >/dev/null 2>&1; then
+        echo "ERROR: required tool not found: $tool" >&2
+        exit 1
+    fi
+done
 
 SQUASHFS="/run/live/medium/live/filesystem.squashfs"
 if [ ! -f "$SQUASHFS" ]; then
@@ -158,20 +196,56 @@ mount --bind /sys  "${MOUNT_ROOT}/sys"
 
 # ------------------------------------------------------------------
 log "--- Step 7/7: Installing GRUB bootloader ---"
+
+# Helper: run a chroot command, log all output, return its exit code.
+# Needed because "cmd | while" pipelines hide the exit code of cmd.
+chroot_log() {
+    local rc=0
+    local out
+    out=$(chroot "$MOUNT_ROOT" "$@" 2>&1) || rc=$?
+    echo "$out" | while IFS= read -r line; do log "  $line"; done
+    return $rc
+}
+
 if [ "$UEFI" = "1" ]; then
-    chroot "$MOUNT_ROOT" grub-install \
-        --target=x86_64-efi \
-        --efi-directory=/boot/efi \
-        --bootloader-id=bee \
-        --recheck 2>&1 | while read -r line; do log "  $line"; done || true
+    # Primary attempt: write EFI NVRAM entry (requires writable efivars)
+    if ! chroot_log grub-install \
+            --target=x86_64-efi \
+            --efi-directory=/boot/efi \
+            --bootloader-id=bee \
+            --recheck; then
+        log "  WARNING: grub-install (with NVRAM) failed — retrying with --no-nvram"
+        # --no-nvram: write grubx64.efi but skip EFI variable update.
+        # Needed on headless servers where efivars is read-only or unavailable.
+        chroot_log grub-install \
+            --target=x86_64-efi \
+            --efi-directory=/boot/efi \
+            --bootloader-id=bee \
+            --no-nvram \
+            --recheck || log "  WARNING: grub-install --no-nvram also failed — check logs"
+    fi
+
+    # Always install the UEFI fallback path EFI/BOOT/BOOTX64.EFI.
+    # Many UEFI implementations (especially server BMCs and some firmware)
+    # ignore the NVRAM boot entry and only look for this path.
+    GRUB_EFI="${MOUNT_ROOT}/boot/efi/EFI/bee/grubx64.efi"
+    FALLBACK_DIR="${MOUNT_ROOT}/boot/efi/EFI/BOOT"
+    if [ -f "$GRUB_EFI" ]; then
+        mkdir -p "$FALLBACK_DIR"
+        cp "$GRUB_EFI" "${FALLBACK_DIR}/BOOTX64.EFI"
+        log "  Fallback EFI binary installed: EFI/BOOT/BOOTX64.EFI"
+    else
+        log "  WARNING: grubx64.efi not found at $GRUB_EFI — UEFI fallback path not set"
+    fi
 else
-    chroot "$MOUNT_ROOT" grub-install \
+    chroot_log grub-install \
         --target=i386-pc \
         --recheck \
-        "$DEVICE" 2>&1 | while read -r line; do log "  $line"; done || true
+        "$DEVICE" || log "  WARNING: grub-install (BIOS) failed — check logs"
 fi
-chroot "$MOUNT_ROOT" update-grub 2>&1 | while read -r line; do log "  $line"; done || true
-log "  GRUB installed."
+
+chroot_log update-grub || log "  WARNING: update-grub failed — check logs"
+log "  GRUB step complete."
 
 # ------------------------------------------------------------------
 # Cleanup

iso/overlay/usr/local/bin/bee-john-gpu-stress

@@ -0,0 +1,193 @@
+#!/bin/sh
+set -eu
+
+SECONDS=300
+DEVICES=""
+EXCLUDE=""
+FORMAT=""
+JOHN_DIR="/usr/local/lib/bee/john/run"
+JOHN_BIN="${JOHN_DIR}/john"
+export OCL_ICD_VENDORS="/etc/OpenCL/vendors"
+export LD_LIBRARY_PATH="/usr/lib:/usr/local/lib${LD_LIBRARY_PATH:+:${LD_LIBRARY_PATH}}"
+
+usage() {
+    echo "usage: $0 [--seconds N] [--devices 0,1] [--exclude 2,3] [--format name]" >&2
+    exit 2
+}
+
+normalize_list() {
+    echo "${1:-}" | tr ',' '\n' | sed 's/[[:space:]]//g' | awk 'NF' | sort -n | uniq | paste -sd, -
+}
+
+contains_csv() {
+    needle="$1"
+    haystack="${2:-}"
+    echo ",${haystack}," | grep -q ",${needle},"
+}
+
+show_opencl_diagnostics() {
+    echo "-- OpenCL ICD vendors --" >&2
+    if [ -d /etc/OpenCL/vendors ]; then
+        ls -l /etc/OpenCL/vendors >&2 || true
+        for icd in /etc/OpenCL/vendors/*.icd; do
+            [ -f "${icd}" ] || continue
+            echo "  file: ${icd}" >&2
+            sed 's/^/    /' "${icd}" >&2 || true
+        done
+    else
+        echo "  /etc/OpenCL/vendors is missing" >&2
+    fi
+    echo "-- NVIDIA device nodes --" >&2
+    ls -l /dev/nvidia* >&2 || true
+    echo "-- ldconfig OpenCL/NVIDIA --" >&2
+    ldconfig -p 2>/dev/null | grep 'libOpenCL\|libcuda\|libnvidia-opencl' >&2 || true
+    if command -v clinfo >/dev/null 2>&1; then
+        echo "-- clinfo -l --" >&2
+        clinfo -l >&2 || true
+    fi
+    echo "-- john --list=opencl-devices --" >&2
+    ./john --list=opencl-devices >&2 || true
+}
+
+refresh_nvidia_runtime() {
+    if [ "$(id -u)" != "0" ]; then
+        return 1
+    fi
+    if command -v bee-nvidia-load >/dev/null 2>&1; then
+        bee-nvidia-load >/dev/null 2>&1 || true
+    fi
+    ldconfig >/dev/null 2>&1 || true
+    return 0
+}
+
+ensure_nvidia_uvm() {
+    if lsmod 2>/dev/null | grep -q '^nvidia_uvm '; then
+        return 0
+    fi
+    if [ "$(id -u)" != "0" ]; then
+        return 1
+    fi
+
+    ko="/usr/local/lib/nvidia/nvidia-uvm.ko"
+    [ -f "${ko}" ] || return 1
+
+    if ! insmod "${ko}" >/dev/null 2>&1; then
+        return 1
+    fi
+
+    uvm_major=$(grep -m1 ' nvidia-uvm$' /proc/devices | awk '{print $1}')
+    if [ -n "${uvm_major}" ]; then
+        mknod -m 666 /dev/nvidia-uvm c "${uvm_major}" 0 2>/dev/null || true
+        mknod -m 666 /dev/nvidia-uvm-tools c "${uvm_major}" 1 2>/dev/null || true
+    fi
+    return 0
+}
+
+ensure_opencl_ready() {
+    out=$(./john --list=opencl-devices 2>&1 || true)
+    if echo "${out}" | grep -q "Device #"; then
+        return 0
+    fi
+
+    if refresh_nvidia_runtime; then
+        out=$(./john --list=opencl-devices 2>&1 || true)
+        if echo "${out}" | grep -q "Device #"; then
+            return 0
+        fi
+    fi
+
+    if ensure_nvidia_uvm; then
+        out=$(./john --list=opencl-devices 2>&1 || true)
+        if echo "${out}" | grep -q "Device #"; then
+            return 0
+        fi
+    fi
+
+    echo "OpenCL devices are not available for John." >&2
+    if ! lsmod 2>/dev/null | grep -q '^nvidia_uvm '; then
+        echo "nvidia_uvm is not loaded." >&2
+    fi
+    if [ ! -e /dev/nvidia-uvm ]; then
+        echo "/dev/nvidia-uvm is missing." >&2
+    fi
+    show_opencl_diagnostics
+    return 1
+}
+
+while [ "$#" -gt 0 ]; do
+    case "$1" in
+        --seconds|-t) [ "$#" -ge 2 ] || usage; SECONDS="$2"; shift 2 ;;
+        --devices) [ "$#" -ge 2 ] || usage; DEVICES="$2"; shift 2 ;;
+        --exclude) [ "$#" -ge 2 ] || usage; EXCLUDE="$2"; shift 2 ;;
+        --format) [ "$#" -ge 2 ] || usage; FORMAT="$2"; shift 2 ;;
+        *) usage ;;
+    esac
+done
+
+[ -x "${JOHN_BIN}" ] || { echo "john binary not found: ${JOHN_BIN}" >&2; exit 1; }
+
+ALL_DEVICES=$(nvidia-smi --query-gpu=index --format=csv,noheader,nounits 2>/dev/null | sed 's/[[:space:]]//g' | awk 'NF' | paste -sd, -)
+[ -n "${ALL_DEVICES}" ] || { echo "nvidia-smi found no NVIDIA GPUs" >&2; exit 1; }
+
+DEVICES=$(normalize_list "${DEVICES}")
+EXCLUDE=$(normalize_list "${EXCLUDE}")
+SELECTED="${DEVICES}"
+if [ -z "${SELECTED}" ]; then
+    SELECTED="${ALL_DEVICES}"
+fi
+
+FINAL=""
+for id in $(echo "${SELECTED}" | tr ',' ' '); do
+    [ -n "${id}" ] || continue
+    if contains_csv "${id}" "${EXCLUDE}"; then
+        continue
+    fi
+    if [ -z "${FINAL}" ]; then
+        FINAL="${id}"
+    else
+        FINAL="${FINAL},${id}"
+    fi
+done
+
+[ -n "${FINAL}" ] || { echo "no NVIDIA GPUs selected after filters" >&2; exit 1; }
+
+JOHN_DEVICES=""
+for id in $(echo "${FINAL}" | tr ',' ' '); do
+    opencl_id=$((id + 1))
+    if [ -z "${JOHN_DEVICES}" ]; then
+        JOHN_DEVICES="${opencl_id}"
+    else
+        JOHN_DEVICES="${JOHN_DEVICES},${opencl_id}"
+    fi
+done
+
+echo "loader=john"
+echo "selected_gpus=${FINAL}"
+echo "john_devices=${JOHN_DEVICES}"
+
+cd "${JOHN_DIR}"
+
+ensure_opencl_ready || exit 1
+
+choose_format() {
+    if [ -n "${FORMAT}" ]; then
+        echo "${FORMAT}"
+        return 0
+    fi
+    for candidate in sha512crypt-opencl pbkdf2-hmac-sha512-opencl 7z-opencl sha256crypt-opencl md5crypt-opencl; do
+        if ./john --test=1 --format="${candidate}" --devices="${JOHN_DEVICES}" >/dev/null 2>&1; then
+            echo "${candidate}"
+            return 0
+        fi
+    done
+    return 1
+}
+
+CHOSEN_FORMAT=$(choose_format) || {
+    echo "no suitable john OpenCL format found" >&2
+    ./john --list=opencl-devices >&2 || true
+    exit 1
+}
+
+echo "format=${CHOSEN_FORMAT}"
+exec ./john --test="${SECONDS}" --format="${CHOSEN_FORMAT}" --devices="${JOHN_DEVICES}"

iso/overlay/usr/local/bin/bee-log-run

@@ -17,7 +17,7 @@ mkdir -p "$(dirname "$log_file")"
 serial_sink() {
     local tty="$1"
     if [ -w "$tty" ]; then
-        cat > "$tty"
+        cat > "$tty" 2>/dev/null || true
     else
         cat > /dev/null
     fi

iso/overlay/usr/local/bin/bee-nccl-gpu-stress

@@ -0,0 +1,91 @@
+#!/bin/sh
+set -eu
+
+SECONDS=300
+DEVICES=""
+EXCLUDE=""
+MIN_BYTES="512M"
+MAX_BYTES="4G"
+FACTOR="2"
+ITERS="20"
+ALL_REDUCE_BIN="/usr/local/bin/all_reduce_perf"
+
+usage() {
+    echo "usage: $0 [--seconds N] [--devices 0,1] [--exclude 2,3]" >&2
+    exit 2
+}
+
+normalize_list() {
+    echo "${1:-}" | tr ',' '\n' | sed 's/[[:space:]]//g' | awk 'NF' | sort -n | uniq | paste -sd, -
+}
+
+contains_csv() {
+    needle="$1"
+    haystack="${2:-}"
+    echo ",${haystack}," | grep -q ",${needle},"
+}
+
+while [ "$#" -gt 0 ]; do
+    case "$1" in
+        --seconds|-t) [ "$#" -ge 2 ] || usage; SECONDS="$2"; shift 2 ;;
+        --devices) [ "$#" -ge 2 ] || usage; DEVICES="$2"; shift 2 ;;
+        --exclude) [ "$#" -ge 2 ] || usage; EXCLUDE="$2"; shift 2 ;;
+        *) usage ;;
+    esac
+done
+
+[ -x "${ALL_REDUCE_BIN}" ] || { echo "all_reduce_perf not found: ${ALL_REDUCE_BIN}" >&2; exit 1; }
+
+ALL_DEVICES=$(nvidia-smi --query-gpu=index --format=csv,noheader,nounits 2>/dev/null | sed 's/[[:space:]]//g' | awk 'NF' | paste -sd, -)
+[ -n "${ALL_DEVICES}" ] || { echo "nvidia-smi found no NVIDIA GPUs" >&2; exit 1; }
+
+DEVICES=$(normalize_list "${DEVICES}")
+EXCLUDE=$(normalize_list "${EXCLUDE}")
+SELECTED="${DEVICES}"
+if [ -z "${SELECTED}" ]; then
+    SELECTED="${ALL_DEVICES}"
+fi
+
+FINAL=""
+for id in $(echo "${SELECTED}" | tr ',' ' '); do
+    [ -n "${id}" ] || continue
+    if contains_csv "${id}" "${EXCLUDE}"; then
+        continue
+    fi
+    if [ -z "${FINAL}" ]; then
+        FINAL="${id}"
+    else
+        FINAL="${FINAL},${id}"
+    fi
+done
+
+[ -n "${FINAL}" ] || { echo "no NVIDIA GPUs selected after filters" >&2; exit 1; }
+
+GPU_COUNT=$(echo "${FINAL}" | tr ',' '\n' | awk 'NF' | wc -l | awk '{print $1}')
+[ "${GPU_COUNT}" -gt 0 ] || { echo "selected GPU count is zero" >&2; exit 1; }
+
+echo "loader=nccl"
+echo "selected_gpus=${FINAL}"
+echo "gpu_count=${GPU_COUNT}"
+echo "range=${MIN_BYTES}..${MAX_BYTES}"
+echo "iters=${ITERS}"
+
+deadline=$(( $(date +%s) + SECONDS ))
+round=0
+
+while :; do
+    now=$(date +%s)
+    if [ "${now}" -ge "${deadline}" ]; then
+        break
+    fi
+    round=$((round + 1))
+    remaining=$((deadline - now))
+    echo "round=${round} remaining_sec=${remaining}"
+    CUDA_VISIBLE_DEVICES="${FINAL}" \
+        "${ALL_REDUCE_BIN}" \
+        -b "${MIN_BYTES}" \
+        -e "${MAX_BYTES}" \
+        -f "${FACTOR}" \
+        -g "${GPU_COUNT}" \
+        --iters "${ITERS}"
+done

iso/overlay/usr/local/bin/bee-nvidia-load

@@ -59,15 +59,28 @@ load_module() {
     return 1
 }
 
+load_host_module() {
+    mod="$1"
+    if modprobe "$mod" >/dev/null 2>&1; then
+        log "host module loaded: $mod"
+        return 0
+    fi
+    return 1
+}
+
 case "$nvidia_mode" in
     normal|full)
         if ! load_module nvidia; then
             exit 1
         fi
+        # nvidia-modeset on some server kernels needs ACPI video helper symbols
+        # exported by the generic "video" module. Best-effort only; compute paths
+        # remain functional even if display-related modules stay absent.
+        load_host_module video || true
         load_module nvidia-modeset || true
         load_module nvidia-uvm || true
         ;;
-    gsp-off|safe|*)
+    gsp-off|safe)
         # NVIDIA documents that GSP firmware is enabled by default on newer GPUs and can
         # be disabled via NVreg_EnableGpuFirmware=0. Safe mode keeps the live ISO on the
         # conservative path for platforms where full boot-time GSP init is unstable.
@@ -76,6 +89,15 @@ case "$nvidia_mode" in
         fi
         log "GSP-off mode: skipping nvidia-modeset and nvidia-uvm during boot"
         ;;
+    nomsi|*)
+        # nomsi: disable MSI-X/MSI interrupts — use when RmInitAdapter fails with
+        # "Failed to enable MSI-X" on one or more GPUs (IOMMU group interrupt limits).
+        # NVreg_EnableMSI=0 forces legacy INTx interrupts for all GPUs.
+        if ! load_module nvidia NVreg_EnableGpuFirmware=0 NVreg_EnableMSI=0; then
+            exit 1
+        fi
+        log "nomsi mode: MSI-X disabled (NVreg_EnableMSI=0), skipping nvidia-modeset and nvidia-uvm"
+        ;;
 esac
 
 # Create /dev/nvidia* device nodes (udev rules absent since we use .run installer)
@@ -105,4 +127,19 @@ fi
 ldconfig 2>/dev/null || true
 log "ldconfig refreshed"
 
+# Start DCGM host engine so dcgmi can discover GPUs.
+# nv-hostengine must run before any dcgmi command — without it, dcgmi reports
+# "group is empty" even when GPUs and modules are present.
+# Skip if already running (e.g. started by a dcgm systemd service or prior boot).
+if command -v nv-hostengine >/dev/null 2>&1; then
+    if pgrep -x nv-hostengine >/dev/null 2>&1; then
+        log "nv-hostengine already running — skipping"
+    else
+        nv-hostengine
+        log "nv-hostengine started"
+    fi
+else
+    log "WARN: nv-hostengine not found — dcgmi diagnostics will not work"
+fi
+
 log "done"

iso/overlay/usr/local/bin/bee-openbox-session

@@ -2,23 +2,29 @@
 # openbox session: launch tint2 taskbar + chromium, then openbox as WM.
 # This file is used as an xinitrc by bee-desktop.
 
-# Wait for bee-web to be accepting connections (up to 15 seconds)
+# Disable screensaver and DPMS
+xset s off
+xset -dpms
+xset s noblank
+
+tint2 &
+
+# Wait up to 120s for bee-web to bind. The web server starts immediately now
+# (audit is deferred), so this should succeed in a few seconds on most hardware.
 i=0
-while [ $i -lt 15 ]; do
-    if curl -sf http://localhost/healthz >/dev/null 2>&1; then
-        break
-    fi
+while [ $i -lt 120 ]; do
+    if curl -sf http://localhost/healthz >/dev/null 2>&1; then break; fi
     sleep 1
     i=$((i+1))
 done
 
-tint2 &
 chromium \
     --disable-infobars \
     --disable-translate \
     --no-first-run \
     --disable-session-crashed-bubble \
     --disable-features=TranslateUI \
+    --start-fullscreen \
     http://localhost/ &
 
 exec openbox