refactor: services layer, valibot validation, shared CSS utilities, aria labels, and drizzle migrate

- Extract groceries/categories/references services with db injection
- Add valibot for form validation and safe numeric id parsing
- Fix category delete FK behavior with onDelete: set null + migration
- Replace custom migrate.js with drizzle-orm/libsql/migrator
- Add shared CSS utility classes in app.css (forms, lists, buttons)
- Add aria-pressed and aria-label on interactive elements
- Remove redundant app.css imports and unused /stores import
- Add integration tests for all services using drizzle migrate helper
- Remove smoke test; add db:migrate and db:studio scripts

1 files changed, 172 insertions, 0 deletions

diff --git a/drizzle/meta/0001_snapshot.json b/drizzle/meta/0001_snapshot.json
new file mode 100644
index 0000000..fc1a462
--- /dev/null
+++ b/drizzle/meta/0001_snapshot.json
@@ -0,0 +1,172 @@
+{
+	"version": "6",
+	"dialect": "sqlite",
+	"id": "ac842614-304d-4599-8104-88b6efe0ed33",
+	"prevId": "be05d3e6-4ab4-4a59-a592-6459b19b440f",
+	"tables": {
+		"categories": {
+			"name": "categories",
+			"columns": {
+				"id": {
+					"name": "id",
+					"type": "integer",
+					"primaryKey": true,
+					"notNull": true,
+					"autoincrement": true
+				},
+				"name": {
+					"name": "name",
+					"type": "text",
+					"primaryKey": false,
+					"notNull": true,
+					"autoincrement": false
+				}
+			},
+			"indexes": {
+				"categories_name_unique": {
+					"name": "categories_name_unique",
+					"columns": ["name"],
+					"isUnique": true
+				}
+			},
+			"foreignKeys": {},
+			"compositePrimaryKeys": {},
+			"uniqueConstraints": {},
+			"checkConstraints": {}
+		},
+		"groceries": {
+			"name": "groceries",
+			"columns": {
+				"id": {
+					"name": "id",
+					"type": "integer",
+					"primaryKey": true,
+					"notNull": true,
+					"autoincrement": true
+				},
+				"name": {
+					"name": "name",
+					"type": "text",
+					"primaryKey": false,
+					"notNull": true,
+					"autoincrement": false
+				},
+				"checked": {
+					"name": "checked",
+					"type": "integer",
+					"primaryKey": false,
+					"notNull": true,
+					"autoincrement": false,
+					"default": false
+				},
+				"created_at": {
+					"name": "created_at",
+					"type": "text",
+					"primaryKey": false,
+					"notNull": true,
+					"autoincrement": false
+				},
+				"category_id": {
+					"name": "category_id",
+					"type": "integer",
+					"primaryKey": false,
+					"notNull": false,
+					"autoincrement": false
+				}
+			},
+			"indexes": {
+				"groceries_name_unique": {
+					"name": "groceries_name_unique",
+					"columns": ["name"],
+					"isUnique": true
+				}
+			},
+			"foreignKeys": {
+				"groceries_category_id_categories_id_fk": {
+					"name": "groceries_category_id_categories_id_fk",
+					"tableFrom": "groceries",
+					"tableTo": "categories",
+					"columnsFrom": ["category_id"],
+					"columnsTo": ["id"],
+					"onDelete": "set null",
+					"onUpdate": "no action"
+				}
+			},
+			"compositePrimaryKeys": {},
+			"uniqueConstraints": {},
+			"checkConstraints": {}
+		},
+		"references": {
+			"name": "references",
+			"columns": {
+				"id": {
+					"name": "id",
+					"type": "integer",
+					"primaryKey": true,
+					"notNull": true,
+					"autoincrement": true
+				},
+				"grocery_id": {
+					"name": "grocery_id",
+					"type": "integer",
+					"primaryKey": false,
+					"notNull": true,
+					"autoincrement": false
+				},
+				"reference": {
+					"name": "reference",
+					"type": "text",
+					"primaryKey": false,
+					"notNull": true,
+					"autoincrement": false
+				},
+				"price": {
+					"name": "price",
+					"type": "real",
+					"primaryKey": false,
+					"notNull": false,
+					"autoincrement": false
+				},
+				"unit": {
+					"name": "unit",
+					"type": "text",
+					"primaryKey": false,
+					"notNull": false,
+					"autoincrement": false
+				},
+				"quality_score": {
+					"name": "quality_score",
+					"type": "integer",
+					"primaryKey": false,
+					"notNull": false,
+					"autoincrement": false
+				}
+			},
+			"indexes": {},
+			"foreignKeys": {
+				"references_grocery_id_groceries_id_fk": {
+					"name": "references_grocery_id_groceries_id_fk",
+					"tableFrom": "references",
+					"tableTo": "groceries",
+					"columnsFrom": ["grocery_id"],
+					"columnsTo": ["id"],
+					"onDelete": "cascade",
+					"onUpdate": "no action"
+				}
+			},
+			"compositePrimaryKeys": {},
+			"uniqueConstraints": {},
+			"checkConstraints": {}
+		}
+	},
+	"views": {},
+	"enums": {},
+	"_meta": {
+		"schemas": {},
+		"tables": {},
+		"columns": {}
+	},
+	"internal": {
+		"indexes": {}
+	}
+}