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, 0 insertions, 7 deletions

diff --git a/src/smoke.test.ts b/src/smoke.test.ts
deleted file mode 100644
index ae2b326..0000000
--- a/src/smoke.test.ts
+++ /dev/null
@@ -1,7 +0,0 @@
-import { describe, it, expect } from 'vitest';
-
-describe('smoke', () => {
-	it('math works', () => {
-		expect(1 + 1).toBe(2);
-	});
-});