ci: add GitHub Actions workflow for pytest (CCC2)

Author: clean6378-max-it

.github/workflows/ci.yml

@@ -0,0 +1,27 @@
+name: CI
+
+on:
+  push:
+  pull_request:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  pytest:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.12"
+          cache: pip
+          cache-dependency-path: requirements.txt
+
+      - name: Install dependencies
+        run: pip install -r requirements.txt
+
+      - name: Run tests
+        run: pytest --tb=short -q

README.md

@@ -107,6 +107,10 @@ claude-code-chat-browser/
 └── tests/
 ```
 
+## Continuous integration
+
+Every push and pull request runs **`pytest`** on **Ubuntu** (Python 3.12) via [`.github/workflows/ci.yml`](.github/workflows/ci.yml).
+
 ## Exported Markdown Format
 
 Each exported session includes: