docs: sync all documentation with v2.3.0 changes

Updates missed in initial implementation:
- projman/README.md: add /test-gen command documentation and update architecture
- CLAUDE.md: bump to v2.3.0, add doc-guardian and code-sentinel to plugin table,
  update projman version, update command count to 9, update repository structure
- docs/CANONICAL-PATHS.md: add doc-guardian and code-sentinel plugin paths

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

docs/CANONICAL-PATHS.md

@@ -29,8 +29,21 @@ support-claude-mktplace/
 │   │   ├── agents/
 │   │   ├── skills/
 │   │   └── claude-md-integration.md  # CLAUDE.md integration snippet
+│   ├── doc-guardian/           # Documentation drift detection
+│   │   ├── .claude-plugin/
+│   │   ├── hooks/              # PostToolUse, Stop hooks
+│   │   ├── commands/
+│   │   ├── agents/
+│   │   ├── skills/
+│   │   └── claude-md-integration.md
+│   ├── code-sentinel/          # Security scanning & refactoring
+│   │   ├── .claude-plugin/
+│   │   ├── hooks/              # PreToolUse hook
+│   │   ├── commands/
+│   │   ├── agents/
+│   │   ├── skills/
+│   │   └── claude-md-integration.md
 │   ├── projman-pmo/
-│   ├── project-hygiene/
 │   ├── cmdb-assistant/
 │   │   ├── .claude-plugin/
 │   │   ├── mcp-servers/        # MCP servers bundled IN plugin