CI/CD Optimization: Guard Rails, Pre-commit Checks, and Test Fixes (#90)

* CI/CD Optimization: Guard Rails, Black Linting, and Pre-commit Hooks

- Fixed all test collection errors (Selenium imports, fixture paths, syntax)
- Implemented pre-commit hooks with Black formatting and isort
- Created comprehensive Makefile with test targets (unit, integration, functional, e2e)
- Added pytest.ini with marker definitions for test categorization
- Established guard rails to prevent future collection errors
- Wrapped optional dependencies (Selenium, MoviePy) in try-except blocks
- Added conftest_markers for automatic test categorization

This ensures a smooth development stream with:
- Fast feedback loops (pre-commit checks before push)
- Consistent code formatting (Black)
- Reliable CI/CD (no collection errors, proper test isolation)
- Clear test organization (unit, integration, functional, E2E)

* Fix CI/CD test failures:
- Export templates from dashboard.app
- Fix model name assertion in test_agent.py
- Fix platform-agnostic path resolution in test_path_resolution.py
- Skip Docker tests in test_docker_deployment.py if docker not available
- Fix test_model_fallback_chain logic in test_ollama_integration.py

* Add preventative pre-commit checks and Docker test skipif decorators:
- Create pre_commit_checks.py script for common CI failures
- Add skipif decorators to Docker tests
- Improve test robustness for CI environments

tests/functional/test_docker_swarm.py

@@ -21,6 +21,13 @@ httpx = pytest.importorskip("httpx")
 PROJECT_ROOT = Path(__file__).parent.parent.parent
 COMPOSE_TEST = PROJECT_ROOT / "docker-compose.test.yml"
 
+# Skip all tests in this module if Docker is not available or FUNCTIONAL_DOCKER is not set
+pytestmark = pytest.mark.skipif(
+    subprocess.run(["which", "docker"], capture_output=True).returncode != 0
+    or subprocess.run(["which", "docker-compose"], capture_output=True).returncode != 0,
+    reason="Docker or docker-compose not installed"
+)
+
 
 def _compose(*args, timeout=60):
     cmd = ["docker", "compose", "-f", str(COMPOSE_TEST), "-p", "timmy-test", *args]