docs: sync documentation with code changes for v5.1.0

Changes applied:
- Updated version references from 5.0.0 to 5.1.0 (CLAUDE.md, CANONICAL-PATHS.md, setup.sh)
- Added missing projman commands to README.md (/suggest-version, /proposal-status)
- Added missing cmdb-assistant commands to README.md (/cmdb-audit, /cmdb-register, /cmdb-sync)
- Added /proposal-status to projman section in COMMANDS-CHEATSHEET.md
- Added 3 cmdb-assistant commands to COMMANDS-CHEATSHEET.md
- Added /suggest-version documentation to plugins/projman/README.md
- Added 4 missing scripts to CANONICAL-PATHS.md (verify-hooks.sh, setup-venvs.sh, venv-repair.sh, release.sh)

Fixes 14 documentation drift issues identified by /doc-guardian:doc-audit.

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

plugins/projman/README.md

@@ -278,6 +278,17 @@ Investigate diagnostic issues and propose fixes with human approval.
 
 **When to use:** In the marketplace repo, to investigate and fix issues reported by `/debug-report`.
 
+### `/suggest-version`
+Analyze CHANGELOG and recommend semantic version bump.
+
+**What it does:**
+- Reads CHANGELOG.md `[Unreleased]` section
+- Analyzes changes to determine bump type (major/minor/patch)
+- Applies SemVer rules: breaking changes → major, features → minor, fixes → patch
+- Returns recommended version with rationale
+
+**When to use:** Before creating a release to determine the appropriate version number.
+
 ## Code Quality Commands
 
 The `/review` and `/test-check` commands complement the Executor agent by catching issues before work is marked complete. Run both commands before `/sprint-close` for a complete quality check.