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/git-flow/skills/sync-workflow.md

@@ -6,8 +6,8 @@ Defines push/pull patterns, rebase strategies, upstream tracking, and stale bran
 
 ## When to Use
 
-- Pushing commits in `/commit-push`
-- Full sync operations in `/commit-sync`
+- Pushing commits in `/git-commit-push`
+- Full sync operations in `/git-commit-sync`
 - Detecting and reporting stale branches
 
 ## Push Workflow