- Fix 7px → 11px font-size on section headers in RecipePicker
- Extract shared slotActions.ts with UUID validation for planId/slotId/recipeId
- Load full recipe list in planner page load (was placeholder current-week slots)
- Update planner/+page.svelte to pass data.recipes as allRecipes to RecipePicker
- Update planner and recipes page.server.ts to use shared slot action helpers
- Fix planner page.server tests: add recipes mock for parallel GET load
- Update action tests to use valid UUIDs (were 'plan-1'/'r1' style strings)
- Add validation-path tests for blank/invalid input on all slot actions
- Add tests for recipes/+server.ts GET endpoint (DayPicker week navigation)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>