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/slashCommands.js

@@ -5393,8 +5393,8 @@ const COMMANDS = {
       'delete':      { handler: _cmdSessionDelete,      alias: ['del','rm'],       help: 'Delete chat',                 usage: '/chats delete [id]' },
       'archive':     { handler: _cmdSessionArchive,     alias: ['tar'],            help: 'Archive chat',                usage: '/chats archive [id]' },
       'rename':      { handler: _cmdSessionRename,      alias: ['mv'],             help: 'Rename current chat',         usage: '/chats rename Name' },
-      'important':   { handler: _cmdSessionImportant,   alias: ['pin'],            help: 'Mark as important',           usage: '/chats important' },
-      'unimportant': { handler: _cmdSessionUnimportant, alias: ['unpin'],          help: 'Unmark important',            usage: '/chats unimportant' },
+      'favorite':    { handler: _cmdSessionImportant,   alias: ['pin','important'], help: 'Mark as favorite',          usage: '/chats favorite' },
+      'unfavorite':  { handler: _cmdSessionUnimportant, alias: ['unpin','unimportant'], help: 'Unmark favorite',       usage: '/chats unfavorite' },
       'fork':        { handler: _cmdSessionFork,        alias: ['cp'],             help: 'Fork chat (keep first N msgs)', usage: '/chats fork [N]' },
       'truncate':    { handler: _cmdSessionTruncate,    alias: [],                 help: 'Delete older messages, keep last N', usage: '/chats truncate N' },
       'switch':      { handler: _cmdSessionSwitch,      alias: ['goto','cd'],      help: 'Switch to chat by name/id',    usage: '/chats switch name' },
@@ -5732,10 +5732,12 @@ export const LEGACY_ALIASES = {
   'del':         { parent: 'chats', sub: 'delete' },
   'archive':     { parent: 'chats', sub: 'archive' },
   'rename':      { parent: 'chats', sub: 'rename' },
-  'important':   { parent: 'chats', sub: 'important' },
-  'star':        { parent: 'chats', sub: 'important' },
-  'unimportant': { parent: 'chats', sub: 'unimportant' },
-  'unstar':      { parent: 'chats', sub: 'unimportant' },
+  'favorite':    { parent: 'chats', sub: 'favorite' },
+  'important':   { parent: 'chats', sub: 'favorite' },
+  'star':        { parent: 'chats', sub: 'favorite' },
+  'unfavorite':  { parent: 'chats', sub: 'unfavorite' },
+  'unimportant': { parent: 'chats', sub: 'unfavorite' },
+  'unstar':      { parent: 'chats', sub: 'unfavorite' },
   'fork':        { parent: 'chats', sub: 'fork' },
   'truncate':    { parent: 'chats', sub: 'truncate' },
   'sessions':    { parent: 'chats', sub: 'info' },