feat(ui): close 6 P1 audit findings + 1 bonus mobile fix (Sprint 2)

- Dashboard MealCard: title truncate -> line-clamp-2, image shrinks to
  40x40 on <md to give the title room (B6).
- MealDetail: hero reworked to normal flow with stronger gradient;
  description runs through new cleanDescription() helper that strips
  14 spoonacular SEO patterns and trims to the last full sentence.
  Raw description moved to a 'Notes from source' disclosure (B7).
- Pantry: free-text aisle/unit replaced with <Select> populated from
  the new PANTRY_AISLES canonical enum; ingredient name field marked
  required. New PANTRY_AISLES export + PantryAisle type in types (B8).
- backend: alembic 0015_normalize_pantry_aisles maps free-text
  ingredient.aisle and grocery_item.aisle to canonical labels in a
  single transaction; downgrade raises (restore from snapshot).
  backend/scripts/dry_run_aisle_migration.sql is the read-only
  preview helper.
- ShoppingList: human-readable AISLE_LABEL map replaces raw snake_case
  aisle keys; 3-col stat grid with compact mobile sizing (B9 + S3.3).
- Pantry table: role/aria-label region and a right-edge white
  gradient hint at mobile horizontal overflow (B10).
- Recipes: pending/applied filter split, Apply and Reset buttons,
  active-count chip on the Filters button, role=region + aria-label
  on the panel (B11).
- Review/sprint2-verification.md and fix-ui-audit.md updated.

Build: npm run build (tsc + vite) green. tsc emits 0 errors.

Co-located audit + plan docs kept in sync: Review/ui-nielsen-audit.md
gains a Sprint 2 status block; fix-ui-audit.md has implementation
notes for each Sprint 2 task.

Review/sprint2-verification.md

@@ -0,0 +1,52 @@
+# Sprint 2 — Verification Log
+
+**Date:** 2026-06-02
+**Scope:** Six P1s from `Review/ui-nielsen-audit.md` plus the S3.3 mobile stat-grid fix.
+**Build:** `cd frontend && npm run build` → green (0 tsc errors, 0 eslint warnings, dist emitted).
+
+## Files changed
+
+| File | Change |
+|---|---|
+| `frontend/src/pages/Dashboard.tsx` | B6: meal-card title `truncate` → `line-clamp-2`; image 56→40 on mobile. |
+| `frontend/src/pages/MealDetail.tsx` | B7: hero rework (relative flow, gradient `from-black/80`, `line-clamp-2` description via `cleanDescription`); new "Notes from source" disclosure. |
+| `frontend/src/lib/utils.ts` | B7: `cleanDescription(input, maxLen=280)` strips 14 spoonacular boilerplate patterns and trims to last sentence. |
+| `frontend/src/pages/Pantry.tsx` | B8: aisle/unit → `<Select>` from canonical lists; ingredient name marked `*`; B10: scroll-hint gradient + `role="region"`. |
+| `frontend/src/types/index.ts` | B8: `PANTRY_AISLES` enum + `PantryAisle` type. |
+| `backend/alembic/versions/0015_normalize_pantry_aisles.py` | B8: migration — `CASE LOWER` mapping, temp-table backup, downgrade raises. |
+| `backend/scripts/dry_run_aisle_migration.sql` | B8: read-only dry-run (counts rows that *would* change). |
+| `frontend/src/pages/ShoppingList.tsx` | B9: `AISLE_LABEL` map + `aisleDisplay()`; S3.3: 3-col grid on all viewports with compact mobile sizing. |
+| `frontend/src/pages/Recipes.tsx` | B11: `applied`/`pending` filter state, Apply/Reset buttons, active-count chip on Filters button, `role="region"`. |
+
+## How to verify on the deployment host
+
+```bash
+cd /path/to/MealPlanner
+git pull
+
+# 1. Backend migration (one-off, dry-run first)
+psql "$DATABASE_URL" -f backend/scripts/dry_run_aisle_migration.sql
+docker compose exec backend alembic upgrade head
+
+# 2. Frontend rebuild + restart
+docker compose -f docker-compose.yml up -d --build frontend
+
+# 3. Smoke-check the live site
+curl -s -o /dev/null -w "%{http_code}\n" http://100.108.208.56:8082/
+# Expect: 200
+```
+
+## Manual smoke checks
+
+- `/` (mobile 390 px): Generate button visible on every empty slot; new meal title clamps to 2 lines without `B..`.
+- `/meals/<id>`: title is readable, description is 1-2 lines, "Notes from source" disclosure shows the raw text.
+- `/pantry` (add form): Unit and Aisle are dropdowns; ingredient name shows `*`.
+- `/shopping-list`: section headers read "Meat & Seafood", "Produce", "Pantry", "Dairy & Eggs". On mobile, the 3 stat cards are side-by-side in one row.
+- `/recipes`: open Filters, set 2, collapse — Filters button shows `Filters (2)`. Reset clears, chip disappears.
+- `/pantry` (mobile 390 px): right-edge gradient hints that the table scrolls horizontally.
+
+## Migration safety
+
+- Run dry-run first to count affected rows per table.
+- Migration runs in a single `upgrade()` call; temp backup tables persist for the session lifetime. To preserve backups beyond session, alter the migration to use real tables.
+- `downgrade()` is intentionally `NotImplementedError`. Restore from a pre-migration snapshot if rollback is needed.