diff --git a/audit/internal/webui/api.go b/audit/internal/webui/api.go
index 48d1f57..518e92d 100644
--- a/audit/internal/webui/api.go
+++ b/audit/internal/webui/api.go
@@ -155,8 +155,11 @@ func (h *handler) handleAPISATRun(target string) http.HandlerFunc {
 		}
 		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
@@ -178,7 +181,7 @@ func (h *handler) handleAPISATRun(target string) http.HandlerFunc {
 			case "nvidia":
 				if len(body.GPUIndices) > 0 || body.DiagLevel > 0 {
 					result, e := h.opts.App.RunNvidiaAcceptancePackWithOptions(
-						context.Background(), "", body.DiagLevel, body.GPUIndices,
+						ctx, "", body.DiagLevel, body.GPUIndices,
 					)
 					if e != nil {
 						err = e
@@ -201,8 +204,13 @@ func (h *handler) handleAPISATRun(target string) http.HandlerFunc {
 			}
 
 			if err != nil {
-				j.append("ERROR: " + err.Error())
-				j.finish(err.Error())
+				if ctx.Err() != nil {
+					j.append("Aborted.")
+					j.finish("aborted")
+				} else {
+					j.append("ERROR: " + err.Error())
+					j.finish(err.Error())
+				}
 				return
 			}
 			j.append(fmt.Sprintf("Archive written: %s", archive))
@@ -223,6 +231,20 @@ func (h *handler) handleAPISATStream(w http.ResponseWriter, r *http.Request) {
 	streamJob(w, r, j)
 }
 
+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)
+		return
+	}
+	if j.abort() {
+		writeJSON(w, map[string]string{"status": "aborted"})
+	} else {
+		writeJSON(w, map[string]string{"status": "not_running"})
+	}
+}
+
 // ── Services ──────────────────────────────────────────────────────────────────
 
 func (h *handler) handleAPIServicesList(w http.ResponseWriter, r *http.Request) {
diff --git a/audit/internal/webui/jobs.go b/audit/internal/webui/jobs.go
index 1992ed8..512cfa2 100644
--- a/audit/internal/webui/jobs.go
+++ b/audit/internal/webui/jobs.go
@@ -7,12 +7,23 @@ import (
 
 // 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 is a list of channels that receive new lines as they arrive.
-	subs []chan string
+	lines  []string
+	done   bool
+	err    string
+	mu     sync.Mutex
+	subs   []chan string
+	cancel func() // optional cancel function; nil if job is not cancellable
+}
+
+// abort cancels the job if it has a cancel function and is not yet done.
+func (j *jobState) abort() bool {
+	j.mu.Lock()
+	defer j.mu.Unlock()
+	if j.done || j.cancel == nil {
+		return false
+	}
+	j.cancel()
+	return true
 }
 
 func (j *jobState) append(line string) {
diff --git a/audit/internal/webui/server.go b/audit/internal/webui/server.go
index 654ab0c..ef04741 100644
--- a/audit/internal/webui/server.go
+++ b/audit/internal/webui/server.go
@@ -132,6 +132,7 @@ func NewHandler(opts HandlerOptions) http.Handler {
 	mux.HandleFunc("POST /api/sat/storage/run", h.handleAPISATRun("storage"))
 	mux.HandleFunc("POST /api/sat/cpu/run", h.handleAPISATRun("cpu"))
 	mux.HandleFunc("GET /api/sat/stream", h.handleAPISATStream)
+	mux.HandleFunc("POST /api/sat/abort", h.handleAPISATAbort)
 
 	// Services
 	mux.HandleFunc("GET /api/services", h.handleAPIServicesList)
diff --git a/bible-local/architecture/runtime-flows.md b/bible-local/architecture/runtime-flows.md
index 9c056c7..0977207 100644
--- a/bible-local/architecture/runtime-flows.md
+++ b/bible-local/architecture/runtime-flows.md
@@ -126,7 +126,7 @@ Key checks: NVIDIA modules loaded, `nvidia-smi` sees all GPUs, lib symlinks pres
 systemd services running, audit completed with NVIDIA enrichment, LAN reachability.
 
 Current validation state:
-- local/libvirt VM boot path is validated for `systemd`, SSH, `bee audit`, `bee-network`, and TUI startup
+- local/libvirt VM boot path is validated for `systemd`, SSH, `bee audit`, `bee-network`, and Web UI startup
 - real hardware validation is still required before treating the ISO as release-ready
 
 ## Overlay mechanism
@@ -168,33 +168,17 @@ Acceptance flows:
   - `BEE_MEMTESTER_SIZE_MB`
   - `BEE_MEMTESTER_PASSES`
 
-## NVIDIA SAT TUI flow (v1.0.0+)
+## NVIDIA SAT Web UI flow
 
 ```
-TUI: Acceptance tests → NVIDIA command pack
-  1. screenNvidiaSATSetup
-       a. enumerate GPUs via `nvidia-smi --query-gpu=index,name,memory.total`
-       b. user selects duration preset: 10 min / 1 h / 8 h / 24 h
-       c. user selects GPUs via checkboxes (all selected by default)
-       d. memory size = max(selected GPU memory) — auto-detected, not exposed to user
-  2. Start → screenNvidiaSATRunning
-       a. CUDA_VISIBLE_DEVICES set to selected GPU indices
-       b. tea.Batch: SAT goroutine + tea.ExecProcess(nvtop) launched concurrently
-       c. nvtop occupies full terminal; SAT result queues in background
-       d. [o] reopen nvtop at any time; [a] abort (cancels context → kills bee-gpu-stress)
-  3. GPU metrics collection (during bee-gpu-stress)
-       - background goroutine polls `nvidia-smi` every second
-       - per-second rows: elapsed, GPU index, temp°C, usage%, power W, clock MHz
-       - outputs: gpu-metrics.csv, gpu-metrics.html (offline SVG chart), gpu-metrics-term.txt
-  4. After SAT completes
-       - result shown in screenOutput with terminal line-chart (gpu-metrics-term.txt)
-       - chart is asciigraph-style: box-drawing chars (╭╮╰╯─│), 4 series per GPU,
-         Y axis with ticks, ANSI colours (red=temp, blue=usage, green=power, yellow=clock)
+Web UI: Acceptance Tests page → Run Test button
+  1. POST /api/sat/nvidia/run → returns job_id
+  2. GET  /api/sat/stream?job_id=... (SSE) — streams stdout/stderr lines live
+  3. After completion — archive written to /appdata/bee/export/bee-sat/
+     summary.txt contains overall_status (OK / FAILED) and per-job status values
 ```
 
 **Critical invariants:**
-- `nvtop` must be in `iso/builder/config/package-lists/bee.list.chroot` (baked into ISO).
-- `bee-gpu-stress` uses `exec.CommandContext` — aborted on cancel.
+- `bee-gpu-stress` uses `exec.CommandContext` — killed on job context cancel.
 - Metric goroutine uses stopCh/doneCh pattern; main goroutine waits `<-doneCh` before reading rows (no mutex needed).
-- If `nvtop` is not found on PATH, SAT still runs without it (graceful degradation).
 - SVG chart is fully offline: no JS, no external CSS, pure inline SVG.