feat: implement optimization #4 - version-tag consistency check

Add version-tag consistency validation to prevent mismatched releases:

- Integrate validate_changelog_version() into create_tag() workflow
  to ensure CHANGELOG has version section before creating git tag
- Add check_version_consistency() method to ReleaseManager for
  manual consistency verification
- Add 'release check-consistency --version X.Y.Z' CLI command to
  verify CHANGELOG and git tag alignment
- Prevent tag creation if CHANGELOG missing version section
- Provide helpful tips when validation fails

This ensures git tags and CHANGELOG versions stay synchronized,
preventing incomplete or inconsistent releases.

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

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

capabilities/release-management/src/release_management/cli/main.py

@@ -261,5 +261,30 @@ def version_info(ctx, suggest: bool):
                 print(f"  {key.replace('_', ' ').title()}: {value}")
 
 
+@main.command('check-consistency')
+@click.option('--version', required=True, help='Version to check (e.g., 0.10.0)')
+@click.pass_context
+def check_consistency(ctx, version: str):
+    """Check consistency between CHANGELOG version and git tags."""
+    manager = ReleaseManager(
+        project_root=ctx.obj['project_root'],
+        dry_run=ctx.obj['dry_run'],
+        force=ctx.obj['force']
+    )
+
+    is_consistent, issues = manager.check_version_consistency(version)
+
+    if is_consistent:
+        print(f"✅ Version {version} is consistent:")
+        print(f"  - CHANGELOG has section for {version}")
+        print(f"  - Git tag v{version} exists")
+        print(f"  - [Unreleased] section present")
+    else:
+        print(f"❌ Version {version} has consistency issues:")
+        for issue in issues:
+            print(f"  - {issue}")
+        sys.exit(1)
+
+
 if __name__ == '__main__':
     main()