Implements the six previously-unscoped feature ideas plus a mobile
layout fix reported via screenshot:
- Mobile: Recipes/Collections/Pantry/Meal Plan/Shopping Lists headers
now stack and wrap instead of clipping buttons on narrow viewports.
- Recipe diff/compare view: word/list diff against any past version,
next to Restore in version history.
- Shared meal plans & shopping lists: new shoppingListMembers/
mealPlanMembers tables (viewer/editor roles, mirrors
collectionMembers), share dialogs, membership-checked routes.
- PDF cookbook export: /print/collection/[id] renders a whole
collection with page breaks, using the existing print-CSS pattern
instead of adding a PDF rendering dependency.
- Grocery delivery handoff: shopping lists can copy-as-text (works
today) or send to Instacart once INSTACART_API_KEY is configured
(stub adapter — real API needs a partner agreement).
- Personalized "For You" feed tab: ranks public recipes by tag/
dietary overlap with the user's favorited/highly-rated history.
- PWA: added manifest.json + icons on top of the existing service
worker so the app is installable; cook-mode pages were already
cached for offline use.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Follow/unfollow users. Recipe favorites. Threaded comments with emoji reactions.
Collections (public/private) with shared member invite. Activity feed.
Public profile pages at /u/[username].
Arnaud