Consolidate dist/ into cache/ and release/ subdirs

All intermediate build artifacts (binaries, live-build work dirs, overlay
stages, NVIDIA/NCCL/cuBLAS/john caches) now live under dist/cache/.
Final ISOs go to dist/release/ instead of scattered dist/easy-bee-v*/ and iso/out/.
dist/ is already gitignored, iso/out/ entry removed as redundant.

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

.gitignore

@@ -1,6 +1,5 @@
 .env
 .DS_Store
 dist/
-iso/out/
 build-cache/
 audit/bee

audit/internal/webui/api.go

@@ -1679,6 +1679,56 @@ func (h *handler) handleAPIBenchmarkResults(w http.ResponseWriter, r *http.Reque
 	fmt.Fprint(w, renderBenchmarkResultsCard(h.opts.ExportDir))
 }
 
+// ── Hardware summary / component detail ──────────────────────────────────────
+
+// handleAPIHardwareSummary returns the hardware summary card HTML fragment for
+// htmx polling (hx-get="/api/hardware-summary" hx-swap="outerHTML").
+func (h *handler) handleAPIHardwareSummary(w http.ResponseWriter, _ *http.Request) {
+	w.Header().Set("Content-Type", "text/html; charset=utf-8")
+	w.Header().Set("Cache-Control", "no-store")
+	fmt.Fprint(w, renderHardwareSummaryCard(h.opts))
+}
+
+// handleAPIComponentDetail returns an HTML fragment describing the current and
+// historical status for one component type (cpu, memory, storage, gpu, psu).
+func (h *handler) handleAPIComponentDetail(w http.ResponseWriter, r *http.Request) {
+	compType := r.PathValue("type")
+	var exact, prefixes []string
+	var title string
+	switch compType {
+	case "cpu":
+		title = "CPU"
+		exact = []string{"cpu:all"}
+	case "memory":
+		title = "Memory"
+		exact = []string{"memory:all"}
+		prefixes = []string{"memory:"}
+	case "storage":
+		title = "Storage"
+		exact = []string{"storage:all"}
+		prefixes = []string{"storage:"}
+	case "gpu":
+		title = "GPU"
+		prefixes = []string{"pcie:gpu:"}
+	case "psu":
+		title = "PSU"
+		prefixes = []string{"psu:"}
+	default:
+		http.NotFound(w, r)
+		return
+	}
+
+	var records []app.ComponentStatusRecord
+	if h.opts.App != nil && h.opts.App.StatusDB != nil {
+		all := h.opts.App.StatusDB.All()
+		records = matchedRecords(all, exact, prefixes)
+	}
+
+	w.Header().Set("Content-Type", "text/html; charset=utf-8")
+	w.Header().Set("Cache-Control", "no-store")
+	fmt.Fprint(w, renderComponentDetail(title, records))
+}
+
 func (h *handler) rollbackPendingNetworkChange() error {
 	h.pendingNetMu.Lock()
 	pnc := h.pendingNet

audit/internal/webui/health_poller.go

@@ -0,0 +1,76 @@
+package webui
+
+import (
+	"bytes"
+	"context"
+	"log/slog"
+	"os/exec"
+	"time"
+
+	"bee/audit/internal/app"
+	"bee/audit/internal/collector"
+)
+
+const healthPollInterval = 60 * time.Second
+const psuIPMITimeout = 15 * time.Second
+
+// healthPoller runs periodic health checks for hardware components that do not
+// emit kernel log events (e.g. PSU). Results are written to ComponentStatusDB.
+type healthPoller struct {
+	statusDB *app.ComponentStatusDB
+}
+
+func newHealthPoller(statusDB *app.ComponentStatusDB) *healthPoller {
+	return &healthPoller{statusDB: statusDB}
+}
+
+func (p *healthPoller) start() {
+	goRecoverLoop("health poller", 5*time.Second, p.run)
+}
+
+func (p *healthPoller) run() {
+	ticker := time.NewTicker(healthPollInterval)
+	defer ticker.Stop()
+	for range ticker.C {
+		p.pollPSU()
+	}
+}
+
+func (p *healthPoller) pollPSU() {
+	if p.statusDB == nil {
+		return
+	}
+	ctx, cancel := context.WithTimeout(context.Background(), psuIPMITimeout)
+	defer cancel()
+
+	cmd := exec.CommandContext(ctx, "ipmitool", "sdr")
+	var out bytes.Buffer
+	cmd.Stdout = &out
+	if err := cmd.Run(); err != nil {
+		// IPMI not available or not a server — skip silently.
+		slog.Debug("health poller: ipmitool sdr unavailable", "err", err)
+		return
+	}
+
+	slots := collector.PSUSlotsFromSDR(out.String())
+	if len(slots) == 0 {
+		return
+	}
+
+	const source = "watchdog:psu"
+	for slot, psu := range slots {
+		key := "psu:" + slot
+		status := psu.Status
+		if status == "" {
+			status = "Unknown"
+		}
+		detail := ""
+		switch status {
+		case "Critical":
+			detail = "PSU sensor reported non-OK state"
+		case "Warning":
+			detail = "PSU sensor in warning state"
+		}
+		p.statusDB.Record(key, source, status, detail)
+	}
+}

audit/internal/webui/kmsg_watcher.go

@@ -73,6 +73,9 @@ func (w *kmsgWatcher) run() {
 			w.mu.Lock()
 			if w.window != nil {
 				w.recordEvent(evt)
+			} else {
+				evtCopy := evt
+				goRecoverOnce("kmsg flush immediate", func() { w.flushImmediate(evtCopy) })
 			}
 			w.mu.Unlock()
 		}
@@ -180,6 +183,52 @@ func (w *kmsgWatcher) flushWindow(window *kmsgWindow) {
 	}
 }
 
+// flushImmediate writes a single kmsg event directly to the status DB without a SAT window.
+// Called when an error is detected outside of any SAT task (always-on watching).
+func (w *kmsgWatcher) flushImmediate(evt kmsgEvent) {
+	if w.statusDB == nil {
+		return
+	}
+	const source = "watchdog:kmsg"
+	detail := "kernel: " + truncate(evt.raw, 120)
+
+	var severity string
+	for _, p := range platform.HardwareErrorPatterns {
+		if p.Re.MatchString(evt.raw) {
+			if p.Severity == "critical" {
+				severity = "Critical"
+			} else {
+				severity = "Warning"
+			}
+			break
+		}
+	}
+	if severity == "" {
+		severity = "Warning"
+	}
+
+	if len(evt.ids) == 0 {
+		key := "cpu:all"
+		if evt.category == "memory" {
+			key = "memory:all"
+		}
+		w.statusDB.Record(key, source, severity, detail)
+		return
+	}
+	for _, id := range evt.ids {
+		var key string
+		switch evt.category {
+		case "gpu", "pcie":
+			key = "pcie:" + normalizeBDF(id)
+		case "storage":
+			key = "storage:" + id
+		default:
+			key = "pcie:" + normalizeBDF(id)
+		}
+		w.statusDB.Record(key, source, severity, detail)
+	}
+}
+
 // parseKmsgLine parses a single /dev/kmsg line and returns an event if it matches
 // any pattern in platform.HardwareErrorPatterns.
 // kmsg format: "<priority>,<sequence>,<timestamp_usec>,-;message text"

audit/internal/webui/pages.go

@@ -85,6 +85,7 @@ func renderPage(page string, opts HandlerOptions) string {
 		body +
 		`</div></div>` +
 		renderAuditModal() +
+		`<dialog id="component-detail-dialog" style="min-width:600px;max-width:900px;width:90vw;padding:0;border:1px solid var(--border);border-radius:8px;background:var(--surface)"><div id="component-detail-body" style="padding-bottom:20px"></div></dialog>` +
 		`<script>
 // Add copy button to every .terminal on the page
 document.querySelectorAll('.terminal').forEach(function(t){
@@ -184,13 +185,14 @@ func renderAudit() string {
 }
 
 func renderHardwareSummaryCard(opts HandlerOptions) string {
+	const cardAttrs = ` hx-get="/api/hardware-summary" hx-trigger="every 30s" hx-swap="outerHTML"`
 	data, err := loadSnapshot(opts.AuditPath)
 	if err != nil {
-		return `<div class="card"><div class="card-head card-head-actions"><span>Hardware Summary</span><div class="card-head-buttons"><button class="btn btn-primary btn-sm" onclick="auditModalRun()">Run audit</button></div></div><div class="card-body"></div></div>`
+		return `<div class="card"` + cardAttrs + `><div class="card-head card-head-actions"><span>Hardware Summary</span><div class="card-head-buttons"><button class="btn btn-primary btn-sm" onclick="auditModalRun()">Run audit</button></div></div><div class="card-body"></div></div>`
 	}
 	var ingest schema.HardwareIngestRequest
 	if err := json.Unmarshal(data, &ingest); err != nil {
-		return `<div class="card"><div class="card-head">Hardware Summary</div><div class="card-body"><span class="badge badge-err">Parse error</span></div></div>`
+		return `<div class="card"` + cardAttrs + `><div class="card-head">Hardware Summary</div><div class="card-body"><span class="badge badge-err">Parse error</span></div></div>`
 	}
 	hw := ingest.Hardware
 
@@ -200,7 +202,7 @@ func renderHardwareSummaryCard(opts HandlerOptions) string {
 	}
 
 	var b strings.Builder
-	b.WriteString(`<div class="card"><div class="card-head">Hardware Summary</div><div class="card-body">`)
+	b.WriteString(`<div class="card"` + cardAttrs + `><div class="card-head">Hardware Summary</div><div class="card-body">`)
 
 	// Server identity block above the component table.
 	{
@@ -229,22 +231,32 @@ func renderHardwareSummaryCard(opts HandlerOptions) string {
 	}
 
 	b.WriteString(`<table style="width:auto">`)
-	writeRow := func(label, value, badgeHTML string) {
-		b.WriteString(fmt.Sprintf(`<tr><td style="padding:6px 14px 6px 0;font-weight:700;white-space:nowrap">%s</td><td style="padding:6px 0;color:var(--muted);font-size:13px">%s</td><td style="padding:6px 0 6px 12px">%s</td></tr>`,
-			html.EscapeString(label), html.EscapeString(value), badgeHTML))
+	// writeRow renders one component row. compType is the URL path segment for the detail
+	// endpoint (e.g. "cpu"). Pass "" for rows that have no detail view.
+	writeRow := func(label, value, badgeHTML, compType string) {
+		var labelHTML string
+		if compType != "" {
+			labelHTML = fmt.Sprintf(
+				`<span style="cursor:pointer;text-decoration:underline dotted;text-underline-offset:3px" hx-get="/api/components/%s" hx-target="#component-detail-body" hx-swap="innerHTML" onclick="document.getElementById('component-detail-dialog').showModal()">%s</span>`,
+				compType, html.EscapeString(label))
+		} else {
+			labelHTML = html.EscapeString(label)
+		}
+		fmt.Fprintf(&b, `<tr><td style="padding:6px 14px 6px 0;font-weight:700;white-space:nowrap">%s</td><td style="padding:6px 0;color:var(--muted);font-size:13px">%s</td><td style="padding:6px 0 6px 12px">%s</td></tr>`,
+			labelHTML, html.EscapeString(value), badgeHTML)
 	}
 
 	writeRow("CPU", hwDescribeCPU(hw),
-		renderComponentChips(matchedRecords(records, []string{"cpu:all"}, nil)))
+		renderComponentChips(matchedRecords(records, []string{"cpu:all"}, nil)), "cpu")
 
 	writeRow("Memory", hwDescribeMemory(hw),
-		renderComponentChips(matchedRecords(records, []string{"memory:all"}, []string{"memory:"})))
+		renderComponentChips(matchedRecords(records, []string{"memory:all"}, []string{"memory:"})), "memory")
 
 	writeRow("Storage", hwDescribeStorage(hw),
-		renderComponentChips(matchedRecords(records, []string{"storage:all"}, []string{"storage:"})))
+		renderComponentChips(matchedRecords(records, []string{"storage:all"}, []string{"storage:"})), "storage")
 
 	writeRow("GPU", hwDescribeGPU(hw),
-		renderComponentChips(matchedRecords(records, nil, []string{"pcie:gpu:"})))
+		renderComponentChips(matchedRecords(records, nil, []string{"pcie:gpu:"})), "gpu")
 
 	psuMatched := matchedRecords(records, nil, []string{"psu:"})
 	if len(psuMatched) == 0 && len(hw.PowerSupplies) > 0 {
@@ -252,10 +264,10 @@ func renderHardwareSummaryCard(opts HandlerOptions) string {
 		psuStatus := hwPSUStatus(hw.PowerSupplies)
 		psuMatched = []app.ComponentStatusRecord{{ComponentKey: "psu:ipmi", Status: psuStatus}}
 	}
-	writeRow("PSU", hwDescribePSU(hw), renderComponentChips(psuMatched))
+	writeRow("PSU", hwDescribePSU(hw), renderComponentChips(psuMatched), "psu")
 
 	if nicDesc := hwDescribeNIC(hw); nicDesc != "" {
-		writeRow("Network", nicDesc, "")
+		writeRow("Network", nicDesc, "", "")
 	}
 
 	b.WriteString(`</table>`)
@@ -999,3 +1011,67 @@ func rowIssueHTML(issue string) string {
 	}
 	return html.EscapeString(issue)
 }
+
+// renderComponentDetail renders a modal content fragment for one component type.
+// Called by handleAPIComponentDetail and displayed inside #component-detail-dialog.
+func renderComponentDetail(title string, records []app.ComponentStatusRecord) string {
+	var b strings.Builder
+	fmt.Fprintf(&b, `<div style="padding:20px 24px 0">`)
+	fmt.Fprintf(&b, `<div style="display:flex;align-items:center;justify-content:space-between;margin-bottom:16px">`)
+	fmt.Fprintf(&b, `<span style="font-size:16px;font-weight:700">%s — Status Detail</span>`, html.EscapeString(title))
+	b.WriteString(`<button class="btn btn-sm btn-secondary" onclick="document.getElementById('component-detail-dialog').close()">Close</button>`)
+	b.WriteString(`</div>`)
+
+	if len(records) == 0 {
+		b.WriteString(`<p style="color:var(--muted)">No status data recorded yet for this component type.</p>`)
+		b.WriteString(`</div>`)
+		return b.String()
+	}
+
+	sort.Slice(records, func(i, j int) bool {
+		return records[i].ComponentKey < records[j].ComponentKey
+	})
+
+	for _, rec := range records {
+		letter, cls := chipLetterClass(rec.Status)
+		fmt.Fprintf(&b, `<div style="margin-bottom:20px">`)
+		fmt.Fprintf(&b, `<div style="display:flex;align-items:center;gap:8px;margin-bottom:8px">`)
+		fmt.Fprintf(&b, `<span class="chip %s">%s</span>`, cls, letter)
+		fmt.Fprintf(&b, `<span style="font-weight:700;font-size:13px">%s</span>`, html.EscapeString(rec.ComponentKey))
+		if !rec.LastCheckedAt.IsZero() {
+			fmt.Fprintf(&b, `<span style="color:var(--muted);font-size:12px">checked %s</span>`, rec.LastCheckedAt.Format("2006-01-02 15:04:05"))
+		}
+		b.WriteString(`</div>`)
+		if rec.ErrorSummary != "" {
+			fmt.Fprintf(&b, `<div style="font-size:12px;margin-bottom:8px;color:var(--muted)">%s</div>`, html.EscapeString(rec.ErrorSummary))
+		}
+
+		// History table — newest first, cap at 20 entries.
+		history := rec.History
+		if len(history) > 20 {
+			history = history[len(history)-20:]
+		}
+		b.WriteString(`<table style="width:100%;font-size:12px;border-collapse:collapse">`)
+		b.WriteString(`<tr style="color:var(--muted)"><th style="text-align:left;padding:2px 10px 2px 0;white-space:nowrap">Time</th><th style="text-align:left;padding:2px 10px 2px 0">Status</th><th style="text-align:left;padding:2px 10px 2px 0">Source</th><th style="text-align:left;padding:2px 0">Detail</th></tr>`)
+		for i := len(history) - 1; i >= 0; i-- {
+			e := history[i]
+			eLetter, eCls := chipLetterClass(e.Status)
+			detail := e.Detail
+			if detail == "" {
+				detail = "—"
+			}
+			fmt.Fprintf(&b,
+				`<tr><td style="padding:3px 10px 3px 0;white-space:nowrap;color:var(--muted)">%s</td><td style="padding:3px 10px 3px 0"><span class="chip %s" style="font-size:10px;width:16px;height:16px">%s</span></td><td style="padding:3px 10px 3px 0;white-space:nowrap">%s</td><td style="padding:3px 0;color:var(--muted)">%s</td></tr>`,
+				html.EscapeString(e.At.Format("2006-01-02 15:04:05")),
+				eCls, eLetter,
+				html.EscapeString(e.Source),
+				html.EscapeString(detail),
+			)
+		}
+		b.WriteString(`</table>`)
+		b.WriteString(`</div>`)
+	}
+
+	b.WriteString(`</div>`)
+	return b.String()
+}

audit/internal/webui/server.go

@@ -221,6 +221,11 @@ func NewHandler(opts HandlerOptions) http.Handler {
 		h.kmsg = newKmsgWatcher(opts.App.StatusDB)
 		h.kmsg.start()
 		globalQueue.kmsgWatcher = h.kmsg
+
+		// Start periodic health poller for components that don't emit kernel log events (e.g. PSU).
+		if opts.App.StatusDB != nil {
+			newHealthPoller(opts.App.StatusDB).start()
+		}
 	}
 
 	globalQueue.startWorker(&opts)
@@ -328,6 +333,10 @@ func NewHandler(opts HandlerOptions) http.Handler {
 	mux.HandleFunc("GET /api/install/disks", h.handleAPIInstallDisks)
 	mux.HandleFunc("POST /api/install/run", h.handleAPIInstallRun)
 
+	// Hardware component detail (fragment for modal in Hardware Summary card)
+	mux.HandleFunc("GET /api/hardware-summary", h.handleAPIHardwareSummary)
+	mux.HandleFunc("GET /api/components/{type}", h.handleAPIComponentDetail)
+
 	// Metrics — SSE stream of live sensor data + server-side SVG charts + CSV export
 	mux.HandleFunc("GET /api/metrics/stream", h.handleAPIMetricsStream)
 	mux.HandleFunc("GET /api/metrics/latest", h.handleAPIMetricsLatest)

iso/builder/build-in-container.sh

@@ -8,7 +8,7 @@ BUILDER_DIR="${REPO_ROOT}/iso/builder"
 CONTAINER_TOOL="${CONTAINER_TOOL:-docker}"
 IMAGE_TAG="${BEE_BUILDER_IMAGE:-bee-iso-builder}"
 BUILDER_PLATFORM="${BEE_BUILDER_PLATFORM:-linux/amd64}"
-CACHE_DIR="${BEE_BUILDER_CACHE_DIR:-${REPO_ROOT}/dist/container-cache}"
+CACHE_DIR="${BEE_BUILDER_CACHE_DIR:-${REPO_ROOT}/dist/cache}"
 AUTH_KEYS=""
 CLEAN_CACHE=0
 VARIANT="all"
@@ -54,14 +54,14 @@ if [ "$CLEAN_CACHE" = "1" ]; then
            "${CACHE_DIR:?}/bee" \
            "${CACHE_DIR:?}/lb-packages"
     echo "=== cleaning live-build work dirs ==="
-    rm -rf "${REPO_ROOT}/dist/live-build-work-nvidia"
-    rm -rf "${REPO_ROOT}/dist/live-build-work-nvidia-legacy"
-    rm -rf "${REPO_ROOT}/dist/live-build-work-amd"
-    rm -rf "${REPO_ROOT}/dist/live-build-work-nogpu"
-    rm -rf "${REPO_ROOT}/dist/overlay-stage-nvidia"
-    rm -rf "${REPO_ROOT}/dist/overlay-stage-nvidia-legacy"
-    rm -rf "${REPO_ROOT}/dist/overlay-stage-amd"
-    rm -rf "${REPO_ROOT}/dist/overlay-stage-nogpu"
+    rm -rf "${REPO_ROOT}/dist/cache/live-build-work-nvidia"
+    rm -rf "${REPO_ROOT}/dist/cache/live-build-work-nvidia-legacy"
+    rm -rf "${REPO_ROOT}/dist/cache/live-build-work-amd"
+    rm -rf "${REPO_ROOT}/dist/cache/live-build-work-nogpu"
+    rm -rf "${REPO_ROOT}/dist/cache/overlay-stage-nvidia"
+    rm -rf "${REPO_ROOT}/dist/cache/overlay-stage-nvidia-legacy"
+    rm -rf "${REPO_ROOT}/dist/cache/overlay-stage-amd"
+    rm -rf "${REPO_ROOT}/dist/cache/overlay-stage-nogpu"
     echo "=== caches cleared, proceeding with build ==="
 fi
 

iso/builder/build.sh

@@ -51,8 +51,8 @@ case "$BUILD_VARIANT" in
         ;;
 esac
 
-BUILD_WORK_DIR="${DIST_DIR}/live-build-work-${BUILD_VARIANT}"
-OVERLAY_STAGE_DIR="${DIST_DIR}/overlay-stage-${BUILD_VARIANT}"
+BUILD_WORK_DIR="${DIST_DIR}/cache/live-build-work-${BUILD_VARIANT}"
+OVERLAY_STAGE_DIR="${DIST_DIR}/cache/overlay-stage-${BUILD_VARIANT}"
 
 export BEE_GPU_VENDOR BEE_NVIDIA_MODULE_FLAVOR BUILD_VARIANT
 
@@ -63,7 +63,7 @@ export PATH="$PATH:/usr/local/go/bin"
 
 # Allow git to read the bind-mounted repo (different UID inside container).
 git config --global safe.directory "${REPO_ROOT}"
-mkdir -p "${DIST_DIR}"
+mkdir -p "${DIST_DIR}/cache" "${DIST_DIR}/release"
 mkdir -p "${CACHE_ROOT}"
 : "${GOCACHE:=${CACHE_ROOT}/go-build}"
 : "${GOMODCACHE:=${CACHE_ROOT}/go-mod}"
@@ -1105,7 +1105,7 @@ PROJECT_VERSION_EFFECTIVE="$(resolve_project_version)"
 SQUASHFS_FILENAME="filesystem-v${PROJECT_VERSION_EFFECTIVE}.squashfs"
 ISO_BASENAME="easy-bee-${BUILD_VARIANT}-v${PROJECT_VERSION_EFFECTIVE}-amd64"
 # Versioned output directory: dist/easy-bee-v4.1/ — all final artefacts live here.
-OUT_DIR="${DIST_DIR}/easy-bee-v${PROJECT_VERSION_EFFECTIVE}"
+OUT_DIR="${DIST_DIR}/release/easy-bee-v${PROJECT_VERSION_EFFECTIVE}"
 ISO_VERSION_LABEL_TOKEN="$(printf '%s' "${PROJECT_VERSION_EFFECTIVE}" | tr '[:lower:].-' '[:upper:]__')"
 mkdir -p "${OUT_DIR}"
 LOG_DIR="${OUT_DIR}/${ISO_BASENAME}.logs"
@@ -1290,7 +1290,7 @@ run_step "sync git submodules" "05-git-submodules" \
 
 # --- compile bee binary (static, Linux amd64) ---
 # Shared between variants — built once, reused on second pass.
-BEE_BIN="${DIST_DIR}/bee-linux-amd64"
+BEE_BIN="${DIST_DIR}/cache/bee-linux-amd64"
 NEED_BUILD=1
 if [ -f "$BEE_BIN" ]; then
     NEWEST_SRC=$(find "${REPO_ROOT}/audit" -name '*.go' -newer "$BEE_BIN" | head -1)
@@ -1321,16 +1321,16 @@ else
 fi
 
 # --- NVIDIA-only build steps ---
-GPU_BURN_WORKER_BIN="${DIST_DIR}/bee-gpu-burn-worker-linux-amd64"
+GPU_BURN_WORKER_BIN="${DIST_DIR}/cache/bee-gpu-burn-worker-linux-amd64"
 if [ "$BEE_GPU_VENDOR" = "nvidia" ]; then
     run_step "download cuBLAS/cuBLASLt/cudart ${NCCL_CUDA_VERSION} userspace" "20-cublas" \
         sh "${BUILDER_DIR}/build-cublas.sh" \
         "${CUBLAS_VERSION}" \
         "${CUDA_USERSPACE_VERSION}" \
         "${NCCL_CUDA_VERSION}" \
-        "${DIST_DIR}"
+        "${DIST_DIR}/cache"
 
-    CUBLAS_CACHE="${DIST_DIR}/cublas-${CUBLAS_VERSION}+cuda${NCCL_CUDA_VERSION}"
+    CUBLAS_CACHE="${DIST_DIR}/cache/cublas-${CUBLAS_VERSION}+cuda${NCCL_CUDA_VERSION}"
 
     echo "=== bee-gpu-burn FP4 header probe ==="
     fp4_type_match="$(grep -Rsnm 1 'CUDA_R_4F_E2M1' "${CUBLAS_CACHE}/include" 2>/dev/null || true)"
@@ -1456,7 +1456,7 @@ fi
 
 # --- copy bee binary into overlay ---
 mkdir -p "${OVERLAY_STAGE_DIR}/usr/local/bin"
-cp "${DIST_DIR}/bee-linux-amd64" "${OVERLAY_STAGE_DIR}/usr/local/bin/bee"
+cp "$BEE_BIN" "${OVERLAY_STAGE_DIR}/usr/local/bin/bee"
 chmod +x "${OVERLAY_STAGE_DIR}/usr/local/bin/bee"
 
 if [ "$BEE_GPU_VENDOR" = "nvidia" ] && [ -f "$GPU_BURN_WORKER_BIN" ]; then
@@ -1486,10 +1486,10 @@ done
 # --- NVIDIA kernel modules and userspace libs ---
 if [ "$BEE_GPU_VENDOR" = "nvidia" ]; then
     run_step "build NVIDIA ${NVIDIA_DRIVER_VERSION} modules" "40-nvidia-module" \
-        sh "${BUILDER_DIR}/build-nvidia-module.sh" "${NVIDIA_DRIVER_VERSION}" "${DIST_DIR}" "${DEBIAN_KERNEL_ABI}" "${BEE_NVIDIA_MODULE_FLAVOR}"
+        sh "${BUILDER_DIR}/build-nvidia-module.sh" "${NVIDIA_DRIVER_VERSION}" "${DIST_DIR}/cache" "${DEBIAN_KERNEL_ABI}" "${BEE_NVIDIA_MODULE_FLAVOR}"
 
     KVER="${DEBIAN_KERNEL_ABI}-amd64"
-    NVIDIA_CACHE="${DIST_DIR}/nvidia-${BEE_NVIDIA_MODULE_FLAVOR}-${NVIDIA_DRIVER_VERSION}-${KVER}"
+    NVIDIA_CACHE="${DIST_DIR}/cache/nvidia-${BEE_NVIDIA_MODULE_FLAVOR}-${NVIDIA_DRIVER_VERSION}-${KVER}"
 
     # Inject .ko files into overlay at /usr/local/lib/nvidia/
     OVERLAY_KMOD_DIR="${OVERLAY_STAGE_DIR}/usr/local/lib/nvidia"
@@ -1515,9 +1515,9 @@ if [ "$BEE_GPU_VENDOR" = "nvidia" ]; then
 
     # --- build / download NCCL ---
     run_step "download NCCL ${NCCL_VERSION}+cuda${NCCL_CUDA_VERSION}" "50-nccl" \
-        sh "${BUILDER_DIR}/build-nccl.sh" "${NCCL_VERSION}" "${NCCL_CUDA_VERSION}" "${DIST_DIR}" "${NCCL_SHA256:-}"
+        sh "${BUILDER_DIR}/build-nccl.sh" "${NCCL_VERSION}" "${NCCL_CUDA_VERSION}" "${DIST_DIR}/cache" "${NCCL_SHA256:-}"
 
-    NCCL_CACHE="${DIST_DIR}/nccl-${NCCL_VERSION}+cuda${NCCL_CUDA_VERSION}"
+    NCCL_CACHE="${DIST_DIR}/cache/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/"
@@ -1533,19 +1533,19 @@ if [ "$BEE_GPU_VENDOR" = "nvidia" ]; then
         "${NCCL_TESTS_VERSION}" \
         "${NCCL_VERSION}" \
         "${NCCL_CUDA_VERSION}" \
-        "${DIST_DIR}" \
+        "${DIST_DIR}/cache" \
         "${NVCC_VERSION}" \
         "${DEBIAN_VERSION}"
 
-    NCCL_TESTS_CACHE="${DIST_DIR}/nccl-tests-${NCCL_TESTS_VERSION}"
+    NCCL_TESTS_CACHE="${DIST_DIR}/cache/nccl-tests-${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 ==="
 
     run_step "build john jumbo ${JOHN_JUMBO_COMMIT}" "70-john" \
-        sh "${BUILDER_DIR}/build-john.sh" "${JOHN_JUMBO_COMMIT}" "${DIST_DIR}"
-    JOHN_CACHE="${DIST_DIR}/john-${JOHN_JUMBO_COMMIT}"
+        sh "${BUILDER_DIR}/build-john.sh" "${JOHN_JUMBO_COMMIT}" "${DIST_DIR}/cache"
+    JOHN_CACHE="${DIST_DIR}/cache/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"

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

@@ -16,6 +16,11 @@ menuentry "EASY-BEE v@VERSION@ -- no GUI / no X11" {
 }
 
 
+menuentry "*** WIPE ALL DISKS (irreversible!) ***" {
+    linux   @KERNEL_LIVE@ @APPEND_LIVE@ toram nomodeset bee.gui=off bee.wipe=all net.ifnames=0 biosdevname=0
+    initrd  @INITRD_LIVE@
+}
+
 if [ "${grub_platform}" = "efi" ]; then
     menuentry "Memory Test (memtest86+)" {
         chainloader /boot/memtest86+x64.efi

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

@@ -41,6 +41,12 @@ label live-@FLAVOUR@-failsafe
     initrd @INITRD@
     append @APPEND_LIVE@ nomodeset bee.nvidia.mode=gsp-off noapic noapm nodma nomce nolapic nosmp vga=normal net.ifnames=0 biosdevname=0
 
+label wipe-disks
+    menu label *** WIPE ALL DISKS (irreversible!) ***
+    linux @LINUX@
+    initrd @INITRD@
+    append @APPEND_LIVE@ toram nomodeset bee.gui=off bee.wipe=all net.ifnames=0 biosdevname=0
+
 label memtest
     menu label ^Memory Test (memtest86+)
     linux /boot/memtest86+x64.bin

iso/builder/config/hooks/normal/9012-wipe.hook.chroot

@@ -0,0 +1,57 @@
+#!/bin/sh
+# 9012-wipe.hook.chroot
+#
+# Adds bee-initramfs-wipe to the initramfs so that selecting the
+# "WIPE ALL DISKS" boot menu entry runs the wipe tool before squashfs
+# is mounted — i.e. it works even when live boot fails.
+#
+# Two files are installed inside the chroot:
+#   /etc/initramfs-tools/hooks/bee-wipe         — copies binaries into initrd
+#   /etc/initramfs-tools/scripts/local-premount/bee-wipe — runs at boot
+
+set -e
+
+HOOK_DIR="/etc/initramfs-tools/hooks"
+SCRIPT_DIR="/etc/initramfs-tools/scripts/local-premount"
+
+mkdir -p "${HOOK_DIR}" "${SCRIPT_DIR}"
+
+# ── initramfs hook: copy binaries ────────────────────────────────────────────
+cat > "${HOOK_DIR}/bee-wipe" << 'EOF'
+#!/bin/sh
+PREREQ=""
+prereqs() { echo "$PREREQ"; }
+case "$1" in prereqs) prereqs; exit 0 ;; esac
+
+. /usr/share/initramfs-tools/hook-functions
+
+for bin in lsblk blkid blkdiscard blockdev; do
+    b=$(command -v "$bin" 2>/dev/null) && copy_exec "$b" /bin
+done
+
+[ -x /usr/sbin/nvme ] && copy_exec /usr/sbin/nvme /sbin
+
+copy_exec /usr/local/bin/bee-initramfs-wipe /bin/bee-wipe
+EOF
+
+chmod +x "${HOOK_DIR}/bee-wipe"
+
+# ── initramfs premount script: trigger on bee.wipe=all ───────────────────────
+cat > "${SCRIPT_DIR}/bee-wipe" << 'EOF'
+#!/bin/sh
+PREREQ=""
+prereqs() { echo "$PREREQ"; }
+case "$1" in prereqs) prereqs; exit 0 ;; esac
+
+grep -qw 'bee.wipe=all' /proc/cmdline 2>/dev/null || exit 0
+exec /bin/bee-wipe
+EOF
+
+chmod +x "${SCRIPT_DIR}/bee-wipe"
+
+echo "9012-wipe: installed initramfs hook and premount script"
+
+KVER=$(ls /lib/modules | sort -V | tail -1)
+echo "9012-wipe: rebuilding initramfs for kernel ${KVER}"
+update-initramfs -u -k "${KVER}"
+echo "9012-wipe: done"

iso/overlay/usr/local/bin/bee-initramfs-wipe

@@ -0,0 +1,166 @@
+#!/bin/sh
+# bee-initramfs-wipe — interactive disk wipe running entirely in the initramfs.
+# Triggered by bee.wipe=all on the kernel cmdline (via local-premount hook).
+# Works before squashfs is mounted, so it runs even when live boot fails.
+
+RED='\033[1;31m'
+YEL='\033[1;33m'
+GRN='\033[1;32m'
+CYN='\033[1;36m'
+NC='\033[0m'
+
+p()  { printf '%b\n' "$*"; }
+pp() { printf '%b'   "$*"; }
+
+banner() {
+    p ""
+    p "${RED}╔══════════════════════════════════════════════════════════╗${NC}"
+    p "${RED}║            BEE DRIVE WIPE — initramfs stage              ║${NC}"
+    p "${RED}╚══════════════════════════════════════════════════════════╝${NC}"
+    p ""
+}
+
+# ── find boot device ─────────────────────────────────────────────────────────
+boot_dev() {
+    local label token
+    for token in $(cat /proc/cmdline 2>/dev/null); do
+        case "$token" in
+            live-media-label=*) label="${token#*=}" ;;
+        esac
+    done
+    [ -z "$label" ] && return
+
+    local dev
+    dev=$(blkid -L "$label" 2>/dev/null) || return
+    # strip partition suffix: /dev/sdb1 → /dev/sdb, /dev/nvme0n1p1 → /dev/nvme0n1
+    echo "$dev" | sed 's/p\?[0-9]\+$//'
+}
+
+# ── enumerate candidate disks ─────────────────────────────────────────────────
+list_disks() {
+    local boot
+    boot=$(boot_dev)
+
+    lsblk -d -n -o NAME,TYPE,SIZE,MODEL 2>/dev/null | while read -r name type size model; do
+        [ "$type" = "disk" ] || continue
+        [ "$size" = "0B"  ] && continue
+        local dev="/dev/$name"
+        [ "$dev" = "$boot" ] && continue
+        printf '%s\t%s\t%s\n' "$dev" "$size" "${model:-}"
+    done
+}
+
+# ── wipe one disk ─────────────────────────────────────────────────────────────
+wipe_one() {
+    local dev="$1"
+    p ""
+    p "=== ${YEL}${dev}${NC} ==="
+
+    if echo "$dev" | grep -q '^/dev/nvme'; then
+        if nvme format --ses=1 "$dev" 2>&1; then
+            p "  ${GRN}nvme format OK${NC}"
+            blockdev --flushbufs "$dev" 2>/dev/null || true
+            return
+        fi
+        p "  nvme format failed — falling back to blkdiscard"
+    fi
+
+    if blkdiscard -f "$dev" 2>&1; then
+        p "  ${GRN}blkdiscard OK${NC}"
+        blockdev --flushbufs "$dev" 2>/dev/null || true
+        return
+    fi
+
+    p "  blkdiscard not supported — zeroing partition tables (HDD fallback)"
+    local size_bytes mb32 skip
+    size_bytes=$(blockdev --getsize64 "$dev" 2>/dev/null || echo 0)
+    mb32=$(( 32 * 1024 * 1024 ))
+
+    dd if=/dev/zero of="$dev" bs=4M count=8 conv=fsync status=progress 2>&1 || true
+
+    if [ "$size_bytes" -gt $(( mb32 * 2 )) ]; then
+        skip=$(( (size_bytes - mb32) / (4 * 1024 * 1024) ))
+        dd if=/dev/zero of="$dev" bs=4M count=8 seek="$skip" conv=fsync status=progress 2>&1 || true
+    fi
+
+    blockdev --flushbufs "$dev" 2>/dev/null || true
+    p "  ${GRN}done (partition tables zeroed)${NC}"
+}
+
+# ── main ──────────────────────────────────────────────────────────────────────
+banner
+
+BOOT=$(boot_dev)
+[ -n "$BOOT" ] && p "Boot device (excluded): ${CYN}${BOOT}${NC}\n"
+
+# build indexed list
+i=0
+DEVS=""
+IFS='
+'
+for line in $(list_disks); do
+    i=$(( i + 1 ))
+    dev=$(echo "$line" | cut -f1)
+    size=$(echo "$line" | cut -f2)
+    model=$(echo "$line" | cut -f3)
+    DEVS="${DEVS}${i}:${dev}:${size}:${model}
+"
+    printf "  ${CYN}[%d]${NC}  %-16s %8s  %s\n" "$i" "$dev" "$size" "$model"
+done
+IFS='
+'
+
+if [ "$i" -eq 0 ]; then
+    p "\nNo physical disks found (boot device excluded)."
+    p "Dropping to shell — type 'exit' to continue boot."
+    exec /bin/sh
+fi
+
+p ""
+pp "Enter numbers to wipe (space-separated), ${YEL}all${NC} for all, ${YEL}q${NC} to abort: "
+read -r SELECTION
+
+case "$SELECTION" in
+    q|Q|'') p "\nAborted."; exec /bin/sh ;;
+esac
+
+# resolve selection → list of devs
+SELECTED=""
+if [ "$SELECTION" = "all" ] || [ "$SELECTION" = "ALL" ]; then
+    SELECTED=$(echo "$DEVS" | grep -v '^$' | cut -d: -f2 | tr '\n' ' ')
+else
+    for num in $SELECTION; do
+        match=$(echo "$DEVS" | grep "^${num}:" | cut -d: -f2)
+        if [ -z "$match" ]; then
+            p "${RED}Unknown index: ${num}${NC}"; exec /bin/sh
+        fi
+        SELECTED="${SELECTED}${match} "
+    done
+fi
+
+SELECTED=$(echo "$SELECTED" | tr -s ' ' | sed 's/ $//')
+
+p ""
+p "Selected for wipe: ${YEL}${SELECTED}${NC}"
+p "${RED}WARNING: This is IRREVERSIBLE. All data on the selected disks will be lost.${NC}"
+p ""
+pp "Type  YES  to confirm, anything else to abort: "
+read -r CONFIRM
+
+if [ "$CONFIRM" != "YES" ]; then
+    p "\nAborted — no disks were touched."
+    exec /bin/sh
+fi
+
+p "\nStarting wipe..."
+for dev in $SELECTED; do
+    wipe_one "$dev"
+done
+
+sync
+p ""
+p "${GRN}=== All selected disks wiped and flushed. ===${NC}"
+p ""
+pp "Press Enter to reboot..."
+read -r _
+reboot

iso/overlay/usr/local/bin/bee-wipe-disks

@@ -0,0 +1,132 @@
+#!/bin/bash
+# bee-wipe-disks — erase all physical disks (interactive, confirmation required)
+#
+# Triggered automatically when the kernel cmdline contains bee.wipe=all.
+# Can also be run manually from a root shell.
+#
+# Wipe strategy:
+#   NVMe  — nvme format (ATA-style secure erase, fast)
+#   Other — blkdiscard -f (TRIM/UNMAP, fast on SSDs)
+#           dd if=/dev/zero  (fallback for HDDs, zeros first+last 32 MB)
+
+set -euo pipefail
+
+RED=$'\033[1;31m'
+YEL=$'\033[1;33m'
+GRN=$'\033[1;32m'
+NC=$'\033[0m'
+
+banner() {
+    echo ""
+    echo "${RED}╔══════════════════════════════════════════════════════════╗${NC}"
+    echo "${RED}║      BEE DISK WIPE — ALL DATA WILL BE DESTROYED          ║${NC}"
+    echo "${RED}╚══════════════════════════════════════════════════════════╝${NC}"
+    echo ""
+}
+
+# ── find boot device to skip ──────────────────────────────────────────────────
+live_dev() {
+    local src
+    src=$(findmnt -n -o SOURCE /run/live/medium 2>/dev/null || true)
+    [ -z "$src" ] && return
+    # Strip partition suffix: /dev/sdb1 → /dev/sdb, /dev/nvme0n1p1 → /dev/nvme0n1
+    echo "$src" | sed 's/p\?[0-9]\+$//'
+}
+
+# ── enumerate target disks ────────────────────────────────────────────────────
+find_disks() {
+    local boot_dev
+    boot_dev=$(live_dev)
+
+    lsblk -d -n -o NAME,TYPE,SIZE,MODEL | while read -r name type size model; do
+        [ "$type" = "disk" ] || continue
+        [ "$size" = "0B"  ] && continue           # empty virtual media
+
+        local dev="/dev/$name"
+        [ "$dev" = "$boot_dev" ] && continue      # skip boot device
+
+        printf '%s\t%s\t%s\n' "$dev" "$size" "$model"
+    done
+}
+
+# ── wipe one disk ─────────────────────────────────────────────────────────────
+wipe_disk() {
+    local dev="$1"
+    echo ""
+    echo "=== ${YEL}${dev}${NC} ==="
+
+    if echo "$dev" | grep -q '^/dev/nvme'; then
+        # NVMe format (ses=1 = user data erase)
+        if nvme format --ses=1 "$dev" 2>&1; then
+            echo "  ${GRN}nvme format OK${NC}"
+            return
+        fi
+        echo "  nvme format failed, falling back to blkdiscard"
+    fi
+
+    if blkdiscard -f "$dev" 2>&1; then
+        echo "  ${GRN}blkdiscard OK${NC}"
+        return
+    fi
+
+    echo "  blkdiscard not supported — zeroing partition tables (HDD fallback)"
+    local size_bytes
+    size_bytes=$(blockdev --getsize64 "$dev")
+    local mb32=$(( 32 * 1024 * 1024 ))
+
+    # Zero first 32 MB (MBR, GPT, filesystem superblocks)
+    dd if=/dev/zero of="$dev" bs=4M count=8 conv=fsync status=progress 2>&1 || true
+
+    # Zero last 32 MB (backup GPT)
+    if [ "$size_bytes" -gt $(( mb32 * 2 )) ]; then
+        local skip=$(( (size_bytes - mb32) / (4 * 1024 * 1024) ))
+        dd if=/dev/zero of="$dev" bs=4M count=8 seek="$skip" conv=fsync status=progress 2>&1 || true
+    fi
+
+    echo "  ${GRN}done (partition tables zeroed)${NC}"
+}
+
+# ── main ──────────────────────────────────────────────────────────────────────
+banner
+
+mapfile -t DISKS < <(find_disks | awk '{print $1}')
+
+if [ ${#DISKS[@]} -eq 0 ]; then
+    echo "No physical disks found (boot device excluded)."
+    echo "Nothing to wipe."
+    exit 0
+fi
+
+echo "Disks to be ${RED}COMPLETELY ERASED${NC}:"
+echo ""
+find_disks | while IFS=$'\t' read -r dev size model; do
+    printf "  ${YEL}%-16s${NC} %8s  %s\n" "$dev" "$size" "$model"
+done
+echo ""
+echo "${RED}WARNING: This is IRREVERSIBLE. All data on the listed disks will be lost.${NC}"
+echo ""
+printf "Type  YES  to confirm wipe, anything else to abort: "
+read -r CONFIRM
+
+if [ "$CONFIRM" != "YES" ]; then
+    echo ""
+    echo "Aborted — no disks were touched."
+    exit 0
+fi
+
+echo ""
+echo "Starting wipe..."
+
+for dev in "${DISKS[@]}"; do
+    wipe_disk "$dev"
+done
+
+echo ""
+echo "${GRN}=== All disks wiped. ===${NC}"
+echo ""
+printf "Reboot now to return to the boot menu? [Y/n] "
+read -r REBOOT
+case "${REBOOT:-Y}" in
+    [Nn]*) echo "You can reboot manually when ready." ;;
+    *)     echo "Rebooting..."; sleep 2; reboot ;;
+esac

scripts/build.sh

@@ -0,0 +1,125 @@
+#!/bin/sh
+# build.sh -- single entry point for ISO builds.
+#
+# Local build (default):
+#   sh scripts/build.sh
+#   sh scripts/build.sh --variant nvidia
+#   sh scripts/build.sh --clean-build
+#
+# Remote build (set BUILDER_HOST + BUILDER_USER in .env):
+#   sh scripts/build.sh
+#   sh scripts/build.sh --authorized-keys ~/.ssh/authorized_keys
+#
+# All flags are forwarded to build-in-container.sh.
+
+set -e
+
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+REPO_ROOT="$(cd "${SCRIPT_DIR}/.." && pwd)"
+
+ENV_FILE="${REPO_ROOT}/.env"
+if [ -f "$ENV_FILE" ]; then
+    # shellcheck disable=SC1090
+    . "$ENV_FILE"
+fi
+
+BUILDER_HOST="${BUILDER_HOST:-}"
+BUILDER_USER="${BUILDER_USER:-}"
+
+# Cache lives inside the repo under dist/ (gitignored).
+CACHE_DIR="${REPO_ROOT}/dist/cache"
+
+# Forward all arguments as-is to the underlying build script.
+EXTRA_ARGS="$*"
+
+# ── Remote build ────────────────────────────────────────────────────────────
+if [ -n "$BUILDER_HOST" ]; then
+    if [ -z "$BUILDER_USER" ]; then
+        echo "ERROR: BUILDER_USER not set. Set it in .env."
+        exit 1
+    fi
+
+    echo "=== bee builder (remote: ${BUILDER_USER}@${BUILDER_HOST}) ==="
+    echo ""
+
+    cd "${REPO_ROOT}"
+    git fetch --quiet origin main
+    LOCAL=$(git rev-parse HEAD)
+    REMOTE=$(git rev-parse origin/main)
+    if [ "$LOCAL" != "$REMOTE" ]; then
+        echo "ERROR: local repo is not in sync with remote."
+        echo "  local:  $LOCAL"
+        echo "  remote: $REMOTE"
+        echo ""
+        echo "Push or pull before building:"
+        echo "  git push   -- if you have unpushed commits"
+        echo "  git pull   -- if remote is ahead"
+        exit 1
+    fi
+    echo "repo: in sync with remote ($LOCAL)"
+    echo ""
+
+    ssh -o StrictHostKeyChecking=no "${BUILDER_USER}@${BUILDER_HOST}" /bin/sh <<ENDSSH
+set -e
+REPO="/home/${BUILDER_USER}/bee"
+LOG=/tmp/bee-build.log
+
+if [ ! -d "\$REPO/.git" ]; then
+    echo "--- cloning bee repo ---"
+    git clone https://git.mchus.pro/reanimator/bee.git "\$REPO"
+fi
+
+cd "\$REPO"
+echo "--- pulling latest ---"
+sudo git checkout -- .
+git pull --ff-only
+chmod +x iso/overlay/usr/local/bin/* 2>/dev/null || true
+
+screen -S bee-build -X quit 2>/dev/null || true
+
+echo "--- starting build in screen session (survives SSH disconnect) ---"
+echo "--- log: \$LOG ---"
+screen -dmS bee-build sh -c "sh iso/builder/build-in-container.sh --cache-dir \$REPO/dist/cache ${EXTRA_ARGS} > \$LOG 2>&1; echo \$? > /tmp/bee-build-exit"
+
+echo "--- streaming build log (Ctrl+C safe -- build continues on VM) ---"
+tail -n +1 -f "\$LOG" 2>/dev/null &
+TAIL_PID=\$!
+while screen -list 2>/dev/null | grep -q bee-build; do
+    sleep 2
+done
+sleep 1
+kill \$TAIL_PID 2>/dev/null || true
+
+tail -n 20 "\$LOG" 2>/dev/null || true
+
+EXIT_CODE=\$(cat /tmp/bee-build-exit 2>/dev/null || echo 1)
+exit \$EXIT_CODE
+ENDSSH
+
+    echo ""
+    echo "=== downloading ISO ==="
+    LOCAL_ISO_DIR="${REPO_ROOT}/dist/release"
+    mkdir -p "${LOCAL_ISO_DIR}"
+    if command -v rsync >/dev/null 2>&1 && ssh -o StrictHostKeyChecking=no "${BUILDER_USER}@${BUILDER_HOST}" command -v rsync >/dev/null 2>&1; then
+        rsync -az --progress \
+            -e "ssh -o StrictHostKeyChecking=no" \
+            "${BUILDER_USER}@${BUILDER_HOST}:/home/${BUILDER_USER}/bee/dist/*.iso" \
+            "${LOCAL_ISO_DIR}/"
+    else
+        scp -o StrictHostKeyChecking=no \
+            "${BUILDER_USER}@${BUILDER_HOST}:/home/${BUILDER_USER}/bee/dist/*.iso" \
+            "${LOCAL_ISO_DIR}/"
+    fi
+    echo ""
+    echo "=== build complete ==="
+    echo "ISO saved to: ${LOCAL_ISO_DIR}/"
+    ls -lh "${LOCAL_ISO_DIR}/"*.iso 2>/dev/null || true
+    exit 0
+fi
+
+# ── Local build ─────────────────────────────────────────────────────────────
+echo "=== bee builder (local) ==="
+echo "cache: ${CACHE_DIR}"
+echo ""
+# shellcheck disable=SC2086
+exec sh "${REPO_ROOT}/iso/builder/build-in-container.sh" --cache-dir "${CACHE_DIR}" $EXTRA_ARGS