refactor: move Gitea integration tests to release-management capability

Moved 35 Gitea API integration tests from main markitect test suite to the
release-management capability where the Gitea functionality now resides.

Changes:
- Moved: tests/test_l6_integration_gitea_api.py
  -> capabilities/release-management/tests/test_gitea_integration.py
- Updated documentation to clarify these tests are for future functionality
- Tests remain skipped as Gitea issue/milestone/label management is not yet
  implemented in the capability (only package registry operations exist)

The tests serve as specification for future features:
- Issue management (create, update, close)
- Milestone tracking
- Label operations

Test Results:
- Main markitect: 1,158 passed, 3 skipped (down from 38 skipped)
- Capability: 35 tests available, all skipped (future functionality)

This separation improves test organization by keeping tests with the code
they're intended to test, even if that functionality isn't implemented yet.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

capabilities/release-management/tests/test_gitea_integration.py

@@ -1,21 +1,38 @@
 """
-Comprehensive tests for the Gitea facade/integration layer.
+Tests for Gitea Issue/Milestone/Label Management (Future Functionality)
 
-This test suite covers all Gitea API operations through the facade pattern,
-ensuring the gitea.client module provides reliable, well-tested functionality
-for the rest of the application.
+IMPORTANT: These tests are for Gitea issue tracker integration functionality
+that is NOT YET IMPLEMENTED in the release-management capability.
 
-NOTE: This test suite needs to be updated for the new capability-based architecture
-where Gitea functionality has been moved to capabilities/release-management.
-Skipping for now until the test can be restructured or moved to the appropriate capability.
+The current release-management capability focuses on:
+- Package registry operations (GiteaRegistry)
+- Version management and tagging
+- Package building and publishing
+
+This test suite covers future Gitea API operations for:
+- Issue management (create, update, close issues)
+- Milestone tracking
+- Label operations
+
+These tests serve as:
+1. Specification for future issue management features
+2. Documentation of expected API behavior
+3. Placeholder for when issue tracking integration is added
+
+Current Status: SKIPPED - Functionality not implemented
+Related: capabilities/release-management/src/release_management/registries/gitea/
 """
 
 import pytest
 from unittest.mock import Mock, MagicMock, patch
 from datetime import datetime
 
-# Skip all tests in this file until gitea tests are moved to release-management capability
-pytestmark = pytest.mark.skip(reason="Gitea functionality moved to release-management capability - tests need restructuring")
+# Skip all tests - this functionality doesn't exist in the capability yet
+# Remove this skip marker when implementing Gitea issue management features
+pytestmark = pytest.mark.skip(
+    reason="Gitea issue/milestone/label management not yet implemented in release-management capability. "
+    "Current capability only supports package registry operations."
+)
 
 
 class TestGiteaConfig: