feat: add CI/CD workflows and EAS build config (Sprint 5)

.gitea/workflows/build.yml

@@ -0,0 +1,37 @@
+name: Build (EAS)
+
+# Triggered on push to main branch.
+# IMPORTANT: Set EXPO_TOKEN as a Gitea Actions secret before running this workflow.
+#   Go to: Repo → Settings → Actions → Secrets → Add secret: EXPO_TOKEN
+#   Get your token at: https://expo.dev/accounts/[username]/settings/access-tokens
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  eas-build:
+    name: EAS Build (Android Preview APK)
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js 20
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+          cache: 'npm'
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Install EAS CLI
+        run: npm install -g eas-cli
+
+      - name: Build Android APK (preview)
+        run: eas build --platform android --profile preview --non-interactive
+        env:
+          EXPO_TOKEN: ${{ secrets.EXPO_TOKEN }}

.gitea/workflows/ci.yml

@@ -0,0 +1,31 @@
+name: CI
+
+on:
+  push:
+    branches:
+      - dev
+      - 'sprint/**'
+
+jobs:
+  lint-and-typecheck:
+    name: Lint & TypeScript Check
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js 20
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+          cache: 'npm'
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Run ESLint
+        run: npx eslint . --ext .ts,.tsx --max-warnings 0
+
+      - name: Run TypeScript check
+        run: npx tsc --noEmit