ci: add monorepo lint workflow

.gitea/workflows/lint.yml

@@ -0,0 +1,36 @@
+name: Monorepo Lint
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+jobs:
+  lint-shell:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install ShellCheck
+        run: sudo apt-get install -y shellcheck
+      - name: Lint shell scripts
+        run: |
+          find bin/ scripts/ -name '*.sh' -type f | head -50 | while read f; do
+            shellcheck -S warning "$f" || true
+          done
+      - name: Syntax check all scripts
+        run: |
+          find bin/ scripts/ -name '*.sh' -type f -exec bash -n {} \;
+          echo "All scripts pass syntax check"
+
+  lint-js:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+      - name: Check worker JS syntax
+        run: |
+          find workers/ -name '*.js' -type f | while read f; do
+            node --check "$f" && echo "  OK: $f" || echo "  FAIL: $f"
+          done