feat(pilot): Phase 7 — polish (loading/empty states, shortcuts, responsive drawer)

- WhatWeKnow shows a "synthesizing" indicator + skeleton pulse while the
  chat cycle is in-flight; task-lane header mirrors the signal with a
  "thinking" pip so engineers know the AI is still working.
- Quiet-state hint when the lane is open (facts exist) but no open
  questions, checks, or active fix — keeps the surface from looking
  "finished" when the AI is about to follow up.
- Keyboard shortcuts: ⌘↵/Ctrl+↵ send in the composer (plain Enter still
  sends), ⌘G toggles the Script Generator panel for the active fix,
  `?` opens a new ShortcutsHelpOverlay listing all bindings. ⌘K palette
  was already wired in TopBar.
- Responsive: below 1200px the task lane collapses to a bottom drawer
  with a backdrop + a floating "Tasks ●" toggle button. TaskLane now
  takes a `variant: 'side' | 'drawer'` prop; drawer variant drops the
  resize handle and uses the shared slide-in-bottom animation.
- Build hygiene: fixed a pre-existing TS error in confirm-post error
  handling (duplicate `response` type keys) and an unused-import warning
  in TemplatizePrompt.

Verified: `npx tsc -b` and `npm run build` both clean against the dev
stack; Vite HMR applied each change without errors.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

docs/FlowAssist_Migration/FLOWPILOT-MIGRATION.md

@@ -2,7 +2,7 @@
 
 > **Target:** Transform `/assistant` (ResolutionAssist) into the new unified `/pilot` (FlowPilot) surface.
 > **Audience:** Claude Code (implementation) and Codex (review) reviewed by Michael (owner).
-> **Status:** Phases 0–6 implemented and verified end-to-end against the dev stack. Phase 7 (polish) next.
+> **Status:** Phases 0–7 implemented. Phase 7 delivered polish: fact-synthesis loading indicator in `WhatWeKnow`, "thinking" pip in the task-lane header, quiet-state hint when questions/checks/fix are all absent, keyboard shortcuts (`⌘K` palette already present, `⌘↵` send, `⌘G` toggle script panel, `?` help overlay), and responsive bottom-drawer lane on viewports <1200px with a floating "Tasks" toggle. `tsc -b` and `npm run build` both clean.
 > **Last updated:** April 22, 2026 (Phase 6 — post-resolve TemplatizePrompt — committed; draft accept → script_templates promotion with provenance verified live)
 
 ---