refactor: update internal command references in all plugin files

Updated:
- projman: 4 commands + 4 skills + integration snippet
- git-flow: 4 commands + 3 skills + integration snippet
- pr-review: 1 command cross-reference
- cmdb-assistant: 1 command + 1 skill
- data-platform: 8 commands + integration snippet
- viz-platform: 11 commands + integration snippet
- contract-validator: 1 command + 1 skill + 1 agent

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

plugins/projman/commands/pm-review.md

@@ -3,7 +3,7 @@ description: Pre-sprint-close code quality review
 agent: code-reviewer
 ---
 
-# Code Review for Sprint Close
+# PM Review - Code Review for Sprint Close
 
 ## Skills Required
 
@@ -16,7 +16,7 @@ Review recent code changes for quality issues before closing the sprint.
 
 ## Invocation
 
-Run `/review` before `/sprint-close` to catch issues.
+Run `/pm-review` before `/sprint-close` to catch issues.
 
 ## Workflow