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/pr-review/commands/project-init.md

@@ -17,13 +17,13 @@ Display header: `PR-REVIEW - Project Setup`
 
 Fast setup when system-level config already exists.
 
-**Use when:** Already ran `/initial-setup`, starting new project
+**Use when:** Already ran `/pr-setup`, starting new project
 
 ## Workflow
 
 ### Pre-Flight Check
 
-Verify `~/.config/claude/gitea.env` exists. If missing: redirect to `/initial-setup`
+Verify `~/.config/claude/gitea.env` exists. If missing: redirect to `/pr-setup`
 
 ### Project Setup