strengthen app reliability and test coverage

.github/workflows/ci.yml

@@ -0,0 +1,54 @@
+name: CI
+
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+
+permissions:
+  contents: read
+
+jobs:
+  validate:
+    runs-on: ubuntu-latest
+    timeout-minutes: 20
+
+    steps:
+      - name: Check out repository
+        uses: actions/checkout@v4
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 22
+          cache: npm
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Typecheck application
+        run: npm run typecheck
+
+      - name: Lint
+        run: npm run lint
+
+      - name: Test
+        run: npm test
+
+      - name: Build
+        run: npm run build
+
+      - name: Set up Deno
+        uses: denoland/setup-deno@v2
+        with:
+          deno-version: v2.x
+
+      - name: Typecheck Supabase Edge Functions
+        run: |
+          deno check supabase/functions/ai-tutor/index.ts
+          deno check supabase/functions/extract-material-text/index.ts
+          deno check supabase/functions/generate-quiz/index.ts
+          deno check supabase/functions/parse-academic-calendar/index.ts
+          deno check supabase/functions/parse-schedule-screenshot/index.ts
+          deno check supabase/functions/parse-syllabus/index.ts

.gitignore

@@ -28,4 +28,5 @@ dist-ssr
 .env.*
 !.env.example
 .claude/
+.codex/
 supabase/.temp/