- Add max_total_min to RecipeRequest schema and TypeScript interface
- Add _within_time() helper to recipe_engine using parse_time_effort()
with graceful degradation (empty directions or no signals -> pass)
- Wire max_total_min filter into suggest() loop after max_time_min
- Add time_first_layout to allowed settings keys
- Add timeFirstLayout ref to settings store (preserves sensoryPreferences)
- Add maxTotalMin ref to recipes store, wired into _buildRequest()
- Add time bucket selector UI (15/30/45/60/90 min) in RecipesView
Find tab, gated by timeFirstLayout != 'normal'
- Add time-first layout selector section in SettingsView
- Add 5 _within_time unit tests and 2 settings key tests