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/contract-validator/commands/cv-setup.md

@@ -2,7 +2,7 @@
 description: Interactive setup wizard for contract-validator plugin
 ---
 
-# /initial-setup - Contract-Validator Setup Wizard
+# /cv-setup - Contract Validator Setup Wizard
 
 ## Skills to Load
 - skills/visual-output.md