feat(webui): add POST /api/sat/abort + update bible-local runtime-flows

- jobState now has optional cancel func; abort() calls it if job is running
- handleAPISATRun passes cancellable context to RunNvidiaAcceptancePackWithOptions
- POST /api/sat/abort?job_id=... cancels the running SAT job
- bible-local/runtime-flows.md: replace TUI SAT flow with Web UI flow

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

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.