ci: replace template validation with proper test workflow

.github/workflows/ci.yml

@@ -1,43 +1,55 @@
-name: Template Validation
+name: CI
 
 on:
   push:
-    branches: [ main ]
+    branches: [main]
   pull_request:
-    branches: [ main ]
+    branches: [main]
 
 jobs:
+  test:
+    name: Test Python ${{ matrix.python-version }}
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ['3.9', '3.10', '3.11', '3.12', '3.13']
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v5
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install -e ".[dev]"
+
+      - name: Run linting
+        run: ruff check src/ tests/
+
+      - name: Run type checking
+        run: mypy src/
+
+      - name: Run tests
+        run: pytest --cov=src/aiproxyguard --cov-report=term-missing
+
   validate:
-    name: Validate Template Files
+    name: Validate Files
     runs-on: ubuntu-latest
 
     steps:
-    - name: Checkout code
-      uses: actions/checkout@v6
-
-    - name: Check required files exist
-      run: |
-        test -f LICENSE
-        test -f README.md
-        test -f CONTRIBUTING.md
-        test -f SECURITY.md
-        test -f CODE_OF_CONDUCT.md
-        test -f .clabot
-        echo "All required template files present"
-
-    - name: Validate markdown files
-      uses: DavidAnson/markdownlint-cli2-action@v23
-      with:
-        globs: '**/*.md'
-        config: |
-          {
-            "default": true,
-            "MD013": false,
-            "MD033": false,
-            "MD041": false
-          }
-      continue-on-error: true
-
-    - name: Check for placeholder text
-      run: |
-        echo "Note: Remember to replace [Project Name] and other placeholders when using this template"
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Check required files exist
+        run: |
+          test -f LICENSE
+          test -f README.md
+          test -f CONTRIBUTING.md
+          test -f SECURITY.md
+          test -f CODE_OF_CONDUCT.md
+          echo "All required files present"