feat: slim meal_diary — derive name and nutrition from dish/recipe

Remove denormalized columns (name, calories, protein_g, fat_g, carbs_g)
from meal_diary. Name is now resolved via JOIN with dishes/dish_translations;
macros are computed as recipe.*_per_serving * portions at query time.

- Add dish.Repository.FindOrCreateRecipe: finds or creates a minimal recipe
  stub seeded with AI-estimated macros
- recognition/handler: resolve recipe_id synchronously per candidate;
  simplify enrichDishInBackground to translations-only
- diary/handler: accept dish_id OR name; always resolve recipe_id via
  FindOrCreateRecipe before INSERT
- diary/entity: DishID is now non-nullable string; CreateRequest drops macros
- diary/repository: ListByDate and Create use JOIN to return computed macros
- ai/types: add RecipeID field to DishCandidate
- Update tests and wire_gen accordingly

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

client/lib/features/home/home_screen.dart

@@ -89,7 +89,7 @@ class HomeScreen extends ConsumerWidget {
                     _ExpiringBanner(items: expiringSoon),
                   ],
                   const SizedBox(height: 16),
-                  _QuickActionsRow(date: dateString),
+                  _QuickActionsRow(),
                   if (recommendations.isNotEmpty) ...[
                     const SizedBox(height: 20),
                     _SectionTitle('Рекомендуем приготовить'),
@@ -988,8 +988,7 @@ class _ExpiringBanner extends StatelessWidget {
 // ── Quick actions ─────────────────────────────────────────────
 
 class _QuickActionsRow extends StatelessWidget {
-  final String date;
-  const _QuickActionsRow({required this.date});
+  const _QuickActionsRow();
 
   @override
   Widget build(BuildContext context) {
@@ -1010,14 +1009,6 @@ class _QuickActionsRow extends StatelessWidget {
             onTap: () => context.push('/menu'),
           ),
         ),
-        const SizedBox(width: 8),
-        Expanded(
-          child: _ActionButton(
-            icon: Icons.book_outlined,
-            label: 'Дневник',
-            onTap: () => context.push('/menu/diary', extra: date),
-          ),
-        ),
       ],
     );
   }

client/lib/features/menu/menu_screen.dart

@@ -150,20 +150,6 @@ class _MenuContent extends StatelessWidget {
             label: const Text('Список покупок'),
           ),
         ),
-        const SizedBox(height: 8),
-        Padding(
-          padding: const EdgeInsets.symmetric(horizontal: 16),
-          child: OutlinedButton.icon(
-            onPressed: () {
-              final today = DateTime.now();
-              final dateStr =
-                  '${today.year}-${today.month.toString().padLeft(2, '0')}-${today.day.toString().padLeft(2, '0')}';
-              context.push('/menu/diary', extra: dateStr);
-            },
-            icon: const Icon(Icons.book_outlined),
-            label: const Text('Дневник питания'),
-          ),
-        ),
       ],
     );
   }

client/lib/features/scan/dish_result_screen.dart

@@ -106,6 +106,7 @@ class _DishResultSheetState extends ConsumerState<DishResultSheet> {
         'carbs_g': scaledCarbs,
         'portion_g': _portionGrams,
         'source': 'recognition',
+        if (_selected.dishId != null) 'dish_id': _selected.dishId,
       });
       if (mounted) widget.onAdded();
     } catch (addError) {

client/lib/features/scan/recognition_service.dart

@@ -65,6 +65,7 @@ class ReceiptResult {
 
 /// A single dish recognition candidate with estimated nutrition for the portion in the photo.
 class DishCandidate {
+  final String? dishId;
   final String dishName;
   final int weightGrams;
   final double calories;
@@ -74,6 +75,7 @@ class DishCandidate {
   final double confidence;
 
   const DishCandidate({
+    this.dishId,
     required this.dishName,
     required this.weightGrams,
     required this.calories,
@@ -85,6 +87,7 @@ class DishCandidate {
 
   factory DishCandidate.fromJson(Map<String, dynamic> json) {
     return DishCandidate(
+      dishId: json['dish_id'] as String?,
       dishName: json['dish_name'] as String? ?? '',
       weightGrams: json['weight_grams'] as int? ?? 0,
       calories: (json['calories'] as num?)?.toDouble() ?? 0,