refactor(version): separate version and release commands

`markitect version` now prints a clean version string (Unix style),
with -v for commit/branch/dirty. `markitect release` shows detailed
development status: commits since tag, local changes, upstream
divergence. No overlap between the two commands.

Replaces get_version_info()/get_release_info() with get_version()
and get_release_status(). Drops yaml output format from release
(json + text sufficient).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

markitect/clean_document_manager.py

@@ -184,15 +184,12 @@ class CleanDocumentManager:
 
     def _get_version_info(self) -> dict:
         """Get repository name and version information."""
-        from .__version__ import get_version_info
+        from .__version__ import get_version
 
-        version_info = get_version_info()
-
-        # Transform to the format expected by the editor
         return {
             'repo_name': 'Markitect',
-            'version': version_info['full_version'],
-            'git_info': ''  # Already included in full_version
+            'version': get_version(),
+            'git_info': '',
         }
 
     def _get_template_css(self, template: str = None, image_max_width: str = '12cm', image_max_height: str = '20cm') -> str: