Rewrite MealPlanSyncManager.performSync() (renamed from performInitialSync) to
discover _mealPlanAssignment metadata from all server recipes, not just locally-
known ones. On first sync all recipes are checked; on subsequent syncs only
recipes modified since lastMealPlanSyncDate are fetched (max 5 concurrent).
Trigger meal plan sync from pull-to-refresh on both the recipe and meal plan
tabs, and from the "Refresh all" toolbar button.
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
Add user-facing appearance setting (System/Light/Dark) wired via
preferredColorScheme at the app root. Replace hardcoded .black tints
and foreground styles with .primary so toolbar buttons and text remain
visible in dark mode. Remove profile picture from settings and
SwiftSoup from acknowledgements.
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
