Cookbook UI: Ollama browser, advanced serve fold, API tokens form, diagnosis toolbar, polish

Surface a lot of accumulated cookbook + UI work as a single non-agent
commit so the agent rework lands cleanly.

Highlights:
- Ollama as a first-class backend in the Cookbook:
  * Download input accepts ollama-style names (name:tag) → backend=ollama
  * /api/cookbook/ollama/library (cached scrape of ollama.com + curated
    fallback so classic models like qwen2.5 stay reachable)
  * "Browse Ollama library" toggle below Download with size chips
  * Engine=Ollama in hwfit toolbar merges the Ollama library into the
    main scan list as per-tag rows with the same Fit/Param/Quant/VRAM
    columns; click → fills Download input
- API Tokens form added to Integrations panel (matching wired
  loadTokens()/initTokenForm() that had no HTML)
- Serve panel polish: Advanced fold tightening (-8px nudges on vLLM
  checks, Extra args, Spec row), n_cpu_moe + Split Mode controls
  pulled up 8px to align with the row's checkboxes, GGUF File dropdown
  exposed for Ollama backend, GPU re-render on Edit serve restore,
  _forceBackend flag so saved serveState wins over backend detection,
  cookbook:servers-changed CustomEvent so panels don't need refresh
- Models page redesign: Add Models row (URL + hidden API key reveal +
  Type select + Scan/Ollama/Key/Test/Add icon buttons), Probe All +
  Clear-offline buttons in Added Models toolbar, offline-pill removed
  (opacity already conveys state), Engine dropdown gains Ollama option
- _ping_endpoint probes /v1/models then base, accepts 4xx as
  reachable (vLLM returns 404 on bare /v1, fully working endpoints
  were showing offline)
- Diagnosis card: × dismiss + Copy bundle buttons restored on the
  serve error feedback card
- Orphan tmux sweep re-enabled behind a 60s rate-limit + background
  Thread (off the main event loop) so dead serves get discovered
- cookbook_routes auto-register watchdog: drops the endpoint if the
  serve session exits non-zero within the first ~3min
- ollama-rocm sidecar awareness in download wrapper (`docker exec
  ollama-rocm ollama pull` when host ollama isn't installed)
- Skill extractor sets initial_status="published" when
  auto_approve_skills pref is on (audit demotes later)
- Skill list / model list / cookbook scan misc polish

static/js/chatRenderer.js

@@ -2118,6 +2118,28 @@ export function addMessage(role, content, modelName, metadata) {
       return lastWrap;
     }
 
+    // --- Wake-task / supervisor system check-in ---
+    // The self-wake mechanism injects "Did you finish?" as a user message
+    // (or persisted history shows a "[Task] Self-check: <id>" envelope)
+    // so the agent loop re-enters and re-checks status. Render as a
+    // normal user-style bubble — same chrome as a real user message,
+    // just with role "Supervisor" and a short summary body — instead of
+    // a slim system chip. Matches chat style and integrates cleanly
+    // into the conversation flow.
+    let _isWakeCheck = !!(metadata?.wake_check_in || metadata?.hidden_from_user_view);
+    if (!_isWakeCheck && typeof textRaw === 'string') {
+      // Also catch historical messages persisted as "[Task] Self-check: <sid>"
+      // (older wake tasks that didn't set wake_check_in metadata).
+      if (/^\s*\[Task\]\s+Self-check:/i.test(textRaw)) {
+        _isWakeCheck = true;
+      }
+    }
+    if (_isWakeCheck) {
+      // Supervisor self-check messages are an internal control signal —
+      // skip rendering entirely so they don't show up in the conversation.
+      return null;
+    }
+
     // --- Standard single-bubble message ---
     const wrap = document.createElement('div');
     wrap.className = 'msg ' + (role === 'user' ? 'msg-user' : 'msg-ai');