docs: sync documentation with codebase

- CLAUDE.md: Update version 3.0.1 → 3.1.2, projman 3.0.0 → 3.1.0, command count 12 → 13
- README.md: Add debug-report/debug-review to projman commands, add DEBUGGING-CHECKLIST.md to docs table
- CANONICAL-PATHS.md: Update version, remove non-existent docs/workflows/, add COMMANDS-CHEATSHEET.md
- projman/README.md: Fix "Three-Agent" → "Four-Agent", update architecture to show symlink
- pr-review/README.md: Add missing setup commands (initial-setup, project-init, project-sync)
- cmdb-assistant/README.md: Add initial-setup.md to architecture
- project-hygiene/README.md: Fix invalid hook event name (task-completed → PostToolUse)
- doc-guardian/plugin.json: Add missing commands field
- code-sentinel/plugin.json: Add missing commands field

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

plugins/project-hygiene/README.md

@@ -20,7 +20,7 @@ claude plugin install project-hygiene
 
 ## How It Works
 
-The plugin registers a `task-completed` hook that runs after Claude completes any task. It:
+The plugin registers a `PostToolUse` hook (on Write and Edit tools) that runs after Claude modifies files. It:
 
 1. Scans for and deletes known temporary file patterns
 2. Removes temporary directories (`__pycache__`, `.pytest_cache`, etc.)