fix(ci): run svelte-kit sync before lint to fix cache-hit tsconfig miss

When the node_modules cache hits, npm ci is skipped and the prepare
lifecycle (svelte-kit sync) never runs. frontend/tsconfig.json extends
.svelte-kit/tsconfig.json which only exists after svelte-kit sync —
so ESLint fails at tsconfig resolution on every cache-warm run.

Adding an unconditional svelte-kit sync step after Paraglide compile
and before Lint ensures .svelte-kit/tsconfig.json is always present
regardless of cache state.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.gitea/workflows/ci.yml

@@ -33,6 +33,10 @@ jobs:
         run: npx @inlang/paraglide-js compile --project ./project.inlang --outdir ./src/lib/paraglide
         working-directory: frontend
 
+      - name: Sync SvelteKit
+        run: npx svelte-kit sync
+        working-directory: frontend
+
       - name: Lint
         run: npm run lint
         working-directory: frontend