fix: resolve test failures and remove unavailable dependency

- Remove gitea-mcp-server from dependencies (not yet on PyPI)
- Add starlette to dependencies (needed for middleware)
- Fix HealthCheckBypassMiddleware to actually bypass auth via request.state flag
- Fix test_required_fields to not require gitea_repo (optional for PMO mode)
- Update pytest testpaths to correct location

All 30 tests now pass.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

pyproject.toml

@@ -29,7 +29,9 @@ dependencies = [
     "pydantic>=2.0.0",
     "pydantic-settings>=2.0.0",
     "python-dotenv>=1.0.0",
-    "gitea-mcp-server>=0.1.0",
+    "starlette>=0.36.0",
+    # gitea-mcp-server - installed separately (not on PyPI yet)
+    # See: https://gitea.hotserv.cloud/personal-projects/leo-claude-mktplace
 ]
 
 [project.optional-dependencies]
@@ -53,7 +55,7 @@ where = ["src"]
 
 [tool.pytest.ini_options]
 asyncio_mode = "auto"
-testpaths = ["tests"]
+testpaths = ["src/gitea_http_wrapper/tests"]
 python_files = ["test_*.py"]
 python_classes = ["Test*"]
 python_functions = ["test_*"]