feat: add rematch functionality for recipe ingredients and enhance inventory management

- Added a new API path for rematching recipe ingredients in `api_paths.dart`.
- Implemented a manual product creation dialog in `inventory_screen.dart` to allow users to create new products directly.
- Integrated the rematch functionality in `recipe_repository.dart` to handle rematching of recipe ingredients.
- Updated the recipe detail screen to include a button for triggering the rematch process.
- Introduced a new `RecipeMatchingService` in the backend to handle ingredient matching logic.
- Added database migration to include `aiEngineEnabled` column in the User table.

Co-authored-by: Copilot <copilot@github.com>

backend/dist/recipes/recipes.controller.js

@@ -49,6 +49,9 @@ let RecipesController = class RecipesController {
     getRecipeAnalysis(id, user) {
         return this.recipeAnalysisService.analyzeRecipeIngredients(id, user.userId);
     }
+    rematchRecipeIngredients(id, user) {
+        return this.recipeAnalysisService.rematchRecipeIngredients(id, user.userId);
+    }
     findOne(id, user) {
         return this.recipesService.findOne(id, user.userId);
     }
@@ -115,6 +118,14 @@ __decorate([
     __metadata("design:paramtypes", [Number, Object]),
     __metadata("design:returntype", void 0)
 ], RecipesController.prototype, "getRecipeAnalysis", null);
+__decorate([
+    (0, common_1.Post)(':id/rematch'),
+    __param(0, (0, common_1.Param)('id', common_1.ParseIntPipe)),
+    __param(1, (0, current_user_decorator_1.CurrentUser)()),
+    __metadata("design:type", Function),
+    __metadata("design:paramtypes", [Number, Object]),
+    __metadata("design:returntype", void 0)
+], RecipesController.prototype, "rematchRecipeIngredients", null);
 __decorate([
     (0, common_1.Get)(':id'),
     __param(0, (0, common_1.Param)('id', common_1.ParseIntPipe)),