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/claude-md-integration.md

@@ -11,7 +11,7 @@ This project uses the **projman** plugin for sprint planning and project managem
 | `/sprint-status` | Check current sprint progress and identify blockers |
 | `/sprint-close` | Complete sprint and capture lessons learned to Gitea Wiki |
 | `/labels-sync` | Synchronize label taxonomy from Gitea |
-| `/initial-setup` | Run initial setup for projman plugin |
+| `/pm-setup` | Run initial setup for projman plugin |
 | `/rfc create` | Create new RFC from conversation or clarified spec |
 | `/rfc list` | List all RFCs grouped by status |
 | `/rfc review` | Submit Draft RFC for review |