fix(frontend): generate API types before svelte-check

schema.ts is gitignored and generated by `generate:types`, which only
`dev` and `build` ran as a prestep — not `check`. The deploy runs
`npm run check` before `npm run build`, so on a clean checkout (where
schema.ts is absent) check fails with "Cannot find module './schema'"
before build ever regenerates it. Give check (and check:watch) the same
generate:types prestep so it stands on its own.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

frontend/package.json

@@ -9,8 +9,8 @@
 		"build": "npm run generate:types && vite build",
 		"preview": "vite preview",
 		"prepare": "svelte-kit sync || echo ''",
-		"check": "svelte-kit sync && svelte-check --tsconfig ./tsconfig.json",
-		"check:watch": "svelte-kit sync && svelte-check --tsconfig ./tsconfig.json --watch",
+		"check": "npm run generate:types && svelte-kit sync && svelte-check --tsconfig ./tsconfig.json",
+		"check:watch": "npm run generate:types && svelte-kit sync && svelte-check --tsconfig ./tsconfig.json --watch",
 		"format": "prettier --write .",
 		"format:check": "prettier --check ."
 	},