feat: structure meal planning taxonomy and favorites

server/db.js

@@ -1482,6 +1482,34 @@ const MIGRATIONS = [
       `);
     },
   },
+  {
+    version: 41,
+    description: 'Structured meal taxonomy and leftover links',
+    up(database) {
+      const columns = (table) => new Set(database.prepare(`PRAGMA table_info(${table})`).all().map((row) => row.name));
+      const addColumn = (table, name, definition) => {
+        if (!columns(table).has(name)) database.exec(`ALTER TABLE ${table} ADD COLUMN ${name} ${definition}`);
+      };
+
+      addColumn('recipes', 'meal_category', "TEXT");
+      addColumn('recipes', 'protein', "TEXT");
+      addColumn('recipes', 'style', "TEXT");
+      addColumn('recipes', 'tags_json', "TEXT");
+
+      addColumn('meals', 'meal_category', "TEXT");
+      addColumn('meals', 'protein', "TEXT");
+      addColumn('meals', 'style', "TEXT");
+      addColumn('meals', 'leftover_from_meal_id', "INTEGER REFERENCES meals(id) ON DELETE SET NULL");
+      addColumn('meals', 'source_plan_id', "TEXT");
+
+      database.exec(`
+        CREATE INDEX IF NOT EXISTS idx_recipes_meal_taxonomy ON recipes(meal_category, protein, style);
+        CREATE INDEX IF NOT EXISTS idx_meals_meal_taxonomy ON meals(meal_category, protein, style);
+        CREATE INDEX IF NOT EXISTS idx_meals_leftover_from ON meals(leftover_from_meal_id);
+        CREATE INDEX IF NOT EXISTS idx_meals_source_plan ON meals(source_plan_id);
+      `);
+    },
+  },
 ];
 
 /**