Fix z-index, conditions auth, and meal combining (#62, #63, #64)

Bug fixes:
- #62: Increase FAB button z-index from z-40 to z-50
- #63: Combine multiple meals per date+mealType in Meals tab
- #64: Make /conditions route public (no auth required)

Changes:
- FAB button now z-50 (same as modals, appears on top when scrolling)
- Meals tab groups meals by date+mealType, joins recipe names with " + "
- Conditions page moved outside protected routes group

DESIGN.md updates:
- Updated z-index hierarchy table
- Added Meals View section
- Noted conditions page is public

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

1 files changed, 62 insertions, 1 deletions

diff --git a/internal/handlers/handlers.go b/internal/handlers/handlers.go
index 1c2eb18..9fe1b2c 100644
--- a/internal/handlers/handlers.go
+++ b/internal/handlers/handlers.go
@@ -1139,6 +1139,14 @@ func (h *Handler) HandleTabPlanning(w http.ResponseWriter, r *http.Request) {
 	HTMLResponse(w, h.templates, "planning-tab", data)
 }
 
+// CombinedMeal represents multiple meals combined for same date+mealType
+type CombinedMeal struct {
+	RecipeNames []string
+	Date        time.Time
+	MealType    string
+	RecipeURL   string // URL of first meal
+}
+
 // HandleTabMeals renders the Meals tab (PlanToEat)
 func (h *Handler) HandleTabMeals(w http.ResponseWriter, r *http.Request) {
 	startDate := config.Now()
@@ -1150,7 +1158,60 @@ func (h *Handler) HandleTabMeals(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	HTMLResponse(w, h.templates, "meals-tab", struct{ Meals []models.Meal }{meals})
+	// Group meals by date+mealType
+	type mealKey struct {
+		date     string
+		mealType string
+	}
+	mealGroups := make(map[mealKey][]models.Meal)
+	for _, meal := range meals {
+		key := mealKey{
+			date:     meal.Date.Format("2006-01-02"),
+			mealType: meal.MealType,
+		}
+		mealGroups[key] = append(mealGroups[key], meal)
+	}
+
+	// Convert to combined meals
+	var combined []CombinedMeal
+	for _, group := range mealGroups {
+		if len(group) == 0 {
+			continue
+		}
+		cm := CombinedMeal{
+			Date:      group[0].Date,
+			MealType:  group[0].MealType,
+			RecipeURL: group[0].RecipeURL,
+		}
+		for _, m := range group {
+			cm.RecipeNames = append(cm.RecipeNames, m.RecipeName)
+		}
+		combined = append(combined, cm)
+	}
+
+	// Sort by date then meal type order
+	sort.Slice(combined, func(i, j int) bool {
+		if !combined[i].Date.Equal(combined[j].Date) {
+			return combined[i].Date.Before(combined[j].Date)
+		}
+		return mealTypeOrder(combined[i].MealType) < mealTypeOrder(combined[j].MealType)
+	})
+
+	HTMLResponse(w, h.templates, "meals-tab", struct{ Meals []CombinedMeal }{combined})
+}
+
+// mealTypeOrder returns sort order for meal types
+func mealTypeOrder(mealType string) int {
+	switch mealType {
+	case "breakfast":
+		return 0
+	case "lunch":
+		return 1
+	case "dinner":
+		return 2
+	default:
+		return 3
+	}
 }
 
 // HandleTabShopping renders the Shopping tab (Trello Shopping board + PlanToEat + User items)