feat: implement modular capability system with automatic discovery

- Move release management to capabilities/release-management/ with complete Makefile
- Create automatic capability discovery system in scripts/capability_discovery.mk
- Add capability-manager subagent for managing modular architecture
- Implement target delegation system enabling capability-name-target patterns
- Create Makefiles for markitect-content, markitect-utils, and issue-facade capabilities
- Remove legacy release management code and documentation from main project
- Update main Makefile to use capability discovery and delegation
- Add comprehensive capability status, help, and management targets

The capability system provides:
- Automatic discovery of capabilities with Makefiles
- Clean target delegation without conflicts
- Modular architecture following established patterns
- Comprehensive help and status reporting
- Zero-conflict capability integration

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

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

capabilities/release-management/src/release_management/__init__.py

@@ -0,0 +1,65 @@
+"""
+Release Management Capability
+
+A comprehensive release management system for Python projects providing:
+- Automatic version management with setuptools-scm
+- Package building and distribution
+- Multi-platform publishing (Gitea, PyPI, etc.)
+- Git tag-based release workflows
+- CLI tools for release automation
+
+Main Components:
+- ReleaseManager: Orchestrates complete release workflows
+- PackageBuilder: Handles package generation and building
+- PublishManager: Manages package publication to registries
+- GitManager: Git operations for releases
+- Registry Support: Gitea, PyPI, and extensible registry system
+
+Quick Start:
+    from release_management import ReleaseManager
+
+    manager = ReleaseManager()
+    success = manager.publish_release("1.0.0")
+
+CLI Usage:
+    release status
+    release publish --version 1.0.0
+    release upload --registry gitea
+"""
+
+from .core.manager import ReleaseManager
+from .core.builder import PackageBuilder
+from .core.publisher import PublishManager
+from .git.manager import GitManager
+from .registries.factory import RegistryFactory
+from .registries.gitea.registry import GiteaRegistry
+from .utils.version import VersionManager
+from .utils.validation import ReleaseValidator
+
+# Version is managed in pyproject.toml
+__version__ = "0.1.0"
+
+__all__ = [
+    # Core classes
+    "ReleaseManager",
+    "PackageBuilder",
+    "PublishManager",
+    "GitManager",
+
+    # Registry support
+    "RegistryFactory",
+    "GiteaRegistry",
+
+    # Utilities
+    "VersionManager",
+    "ReleaseValidator",
+
+    # Version
+    "__version__",
+]
+
+# Package metadata
+__title__ = "release-management"
+__description__ = "Comprehensive release management capability for Python projects"
+__author__ = "MarkiTect Project"
+__license__ = "MIT"