Cookbook: scoring fixes, UI polish, false-finished + stale-state bug fixes

Backend (services/hwfit + routes):
- rank_models picks visible set by REQUESTED column, not always score —
  sorting by Param now shows highest-param models PERIOD (incl. too_tight).
- New fit_only param. Multi-GPU rigs filter GGUF Q*/IQ quants (vLLM/SGLang
  cannot serve them); default non-prequantized to BF16 on 2+ GPUs.
- AWQ / GPTQ-8bit get a -1.0 quality penalty (was 0.0, tied with FP8), so
  FP8 wins when both fit.
- Version-aware tiebreaker (parse Mn.n / Vn) — MiniMax-M2.7 ranks above
  M2.5 on equal composite score; >=100B integers not misread as versions.
- /api/cookbook/hf-latest no longer drops models without an "NB" pattern in
  the repo id (MiniMax-M2.7, DeepSeek-V4-Pro etc. were silently filtered).
- Cached-model scan: atexit flushes models JSON even if the script is
  killed mid-walk; each scan_dir wrapped in try/except; timeout 60s -> 180s.
- KB granularity for sub-MB sizes (was "0 MB" for 12 KB shells). New
  "stalled" status for shells <1 MB with no .incomplete files.
- /api/cookbook/state POST guard: rejects "done" download tasks lacking
  DOWNLOAD_OK / DOWNLOAD_FAILED / /snapshots/ when the last-mentioned
  shard is N<total — stops stale tabs from poisoning persisted state.
- hf_models.json: add zai-org/GLM-5.1; flip zai-org/GLM-5 quantization
  Q4_K_M -> BF16 (it is the native base, not a quant).

Frontend (static/js):
- Scan/Download toolbar: quant defaults to All; ctx slider (8k/16k/32k/
  50k/128k/Max) ported from origin/main with sort=fit on drag, sort=score
  on Max. GPU toggle commits _activeCount to maxGpu on initial render. Fit
  column header tagged with active budget (RAM / GPU / N GPU).
- Foldable Download admin-card: the Download h2 is the chevron trigger;
  state persists in localStorage.
- Download card surfaces destination dir (Dir: <path>). Same dir on running
  task row, font/color matched to uptime (9px Fira Code muted, opacity .4).
- Serve panel ctx text input always resets to model max on open. Sub-MB
  cached models show with red "download stalled" badge.
- Bulk-select Cancel + Delete reset the Select button label on exit.
- Cookbook running: false-finished bug fixed — DOWNLOAD_OK or /snapshots/
  required; bare "Download complete" no longer marks the task done after
  the first config file. Clear button now sends tmux kill-session too.
  True overall % for multi-shard downloads: ((N-1)+frac)/total instead of
  hf_transfer per-shard aggregate.
- Diagnosis card simplified: removed fold toggle, copy button, dismiss X.
  Suggestion font matches message body (12px).
- HF token field flashes green check + "Saved" on save.
- Cached scan no longer counts stalled rows as downloaded in Scan/Download.

CSS:
- dep Install button width pinned to 76px to match Installed split.
- task-sub row +1px; task-status badge gets margin-right 8px.
- Ctx slider styled like gallery editor sliders (thin pill rail, red thumb).
- Bulk-select cancel button top -3px -> -5px.

static/js/tasks.js

@@ -349,10 +349,23 @@ function _taskIcon(task) {
   return `<svg width="13" height="13" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" style="opacity:0.4;flex-shrink:0;position:relative;top:-4px;">${path}</svg>`;
 }
 
+const _MODEL_BACKED_ACTIONS = new Set([
+  'summarize_emails',
+  'draft_email_replies',
+  'extract_email_events',
+  'classify_events',
+  'mark_email_boundaries',
+  'learn_sender_signatures',
+  'check_email_urgency',
+  'test_skills',
+  'audit_skills',
+  'consolidate_memory',
+]);
+
 function _taskAiMark(task) {
   const kind = task?.task_type || task?.kind || '';
   const action = task?.action || '';
-  const aiAction = /(^|_)(ai|summarize|summary|draft|reply|classify|triage|audit|research|brief|skills?)($|_)/i.test(action);
+  const aiAction = _MODEL_BACKED_ACTIONS.has(action);
   if (!(kind === 'llm' || kind === 'research' || task?.model || task?.endpointUrl || aiAction)) return '';
   return '<svg class="task-ai-mark" width="10" height="10" viewBox="0 0 24 24" fill="currentColor" aria-label="Uses model" title="Uses model"><path d="M12 0L14.59 8.41L23 12L14.59 15.59L12 24L9.41 15.59L1 12L9.41 8.41Z"/></svg>';
 }
@@ -708,7 +721,7 @@ function _renderList() {
       const runBtn = document.createElement('button');
       runBtn.className = 'task-status-badge task-run-now-badge task-card-run-btn';
       runBtn.title = 'Run now';
-      runBtn.style.cssText = 'position:relative;top:4px;margin-right:4px;';
+      runBtn.style.cssText = 'position:relative;top:1px;margin-right:4px;';
       runBtn.innerHTML = '<svg width="11" height="11" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.2" stroke-linecap="round" stroke-linejoin="round"><polyline points="13 2 3 14 12 14 11 22 21 10 12 10 13 2"/></svg><span>Run</span>';
       runBtn.addEventListener('click', (e) => { e.stopPropagation(); _doRunNow(task.id); });
       actionsWrap.insertBefore(runBtn, menuBtn);