chore: harden admin and add CI

docs/ci/github-actions.yml

@@ -0,0 +1,33 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+
+jobs:
+  sanity:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.11"
+
+      - name: Python syntax
+        run: python -m compileall admin-web pcatelegram_web-bot
+
+      - name: JavaScript syntax
+        run: node --check admin-web/static/app.js
+
+      - name: Shell syntax
+        run: bash -n bootstrap.sh install.sh install_pcatelegram_web_bot.sh lib/*.sh lib/lang/*.sh
+
+      - name: JSON syntax
+        run: |
+          python -m json.tool templates_catalog.json >/dev/null
+          python -m json.tool pcatelegram_web-bot/lang/en.json >/dev/null
+          python -m json.tool pcatelegram_web-bot/lang/ru.json >/dev/null