docs: Sprint 11 — wire the dead "Generate Meal Plan" CTA across all 6 running docs

Sprint 11 (commit 41154e9) wires the previously-dead
"Generate Meal Plan" empty-state CTA on the Dashboard to two
existing endpoints (POST /api/meals + POST /api/meals/{id}/fill-
empty-slots). No backend changes; no new dependencies. The
handler lives on the client for now; future F8 (Spoonacular) +
F9 (Ollama) will swap the fillEmptySlots call for an LLM call
without changing the DOM. F8 + F9 remain in the §Future backlog.

This commit updates the 6 running docs that track the sprint:

- .agent/plan.md — Sprint 11 section (S11.1-S11.3) added.
- .agent/context.md — Sprint 11 (D1-D6, Q1-Q3) added; file:line
  references; key takeaways.
- Review/sprint11-verification.md — new file: 4-step browser
  smoke + race test + 2 API curls + a11y check + risks + future
  work section.
- Review/ui-nielsen-audit.md — Sprint 11 status block (T5.1-T5.3)
  at the top, after the Sprint 10 block.
- fix-ui-audit.md — Sprint 11 section (T5.1-T5.5) added after the
  Sprint 10 section.
- Review/handoff-ui-audit.md — Batch G added to the deploy
  instructions; Sprint 11 section added after Sprint 10; TL;DR
  table row 11 added; Last-updated footer updated.
- docs/HANDOFF.md — Sprint 11 section added after the Sprint 10
  section, with a path-forward paragraph for F8/F9.

All 6 docs now reflect Sprint 11. §Future backlog remaining: F8
(Spoonacular) + F9 (Ollama) proposals, both full backend work.

Review/ui-nielsen-audit.md

@@ -117,6 +117,12 @@ The app looks polished on the surface (Tailwind palette, clean cards, working to
 > - **T4.6** `Recipes.tsx` overlay. Card has `position: relative`; button is `opacity-0 group-hover:opacity-100 focus:opacity-100`. `e.preventDefault()` + `e.stopPropagation()` — doesn't navigate.
 > - **T4.7** `RecipeDetail.tsx` top bar. New "Deny forever" button group to the left of "Add to Plan".
 > - **Verification log:** `Review/sprint10-verification.md`. Deploy is `git pull` + `docker compose up -d --build backend frontend` (no migration; the `NeverSuggest` table already exists).
+>
+> **Sprint 11 status (committed 2026-06-05, awaiting deploy):** Wire the dead "Generate Meal Plan" empty-state CTA on the Dashboard. The button has been rendered with `onClick: () => {}` since Sprint 1; clicking it did nothing. Sprint 11 wires it to two existing endpoints (`POST /api/meals` to create a plan + `POST /api/meals/{id}/fill-empty-slots` to fill it from the recipe library). The handler lives on the client for now; future F8 (Spoonacular) + F9 (Ollama) will swap the `fillEmptySlots` call for an LLM call without changing the DOM. F8 + F9 are separate full backend proposals and remain in the §Future backlog.
+> - **T5.1** New `handleGenerateFirstPlan` in `Dashboard.tsx:400-449`. Tracks `generatingFirstPlan` state; swaps the button label to "Generating…" and disables it while in-flight. Handles the "already exists" race (another tab created the plan first) by falling through to `getPlanned(weekStart)` + `fillEmptySlots`.
+> - **T5.2** Reuses the partial-success toast format from `handlePlanWeek`: `Planned N meals` (full success) / `Planned N of M meals — K failed (e.g. <reason>)` (partial) / `Plan created — no recipes to add yet` (empty library).
+> - **T5.3** `EmptyState.action.disabled?: boolean` — optional new prop on `EmptyState.tsx`. Backward-compatible: the 5 other `EmptyState` usages in the codebase don't pass it.
+> - **Verification log:** `Review/sprint11-verification.md` (4-step browser smoke + race test + 2 API curls). Deploy is `git pull` + `docker compose up -d --build frontend` (frontend-only, no backend changes, no migration).
 > - **No new dependencies. No migration. Admin path unchanged.**
 >
 > **Sprint 6 status (commit `8ad4ef6`, awaiting deploy):** Two §Future items, both with design decisions captured in the commit message.