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/data-platform/commands/data-lineage.md

@@ -1,4 +1,4 @@
-# /lineage - Data Lineage Visualization
+# /data-lineage - Data Lineage Visualization
 
 ## Skills to Load
 - skills/lineage-analysis.md
@@ -12,7 +12,7 @@ Display header: `DATA-PLATFORM - Lineage`
 ## Usage
 
 ```
-/lineage <model_name> [--depth N]
+/data-lineage <model_name> [--depth N]
 ```
 
 ## Workflow
@@ -25,8 +25,8 @@ Display header: `DATA-PLATFORM - Lineage`
 ## Examples
 
 ```
-/lineage dim_customers
-/lineage fct_orders --depth 3
+/data-lineage dim_customers
+/data-lineage fct_orders --depth 3
 ```
 
 ## Required MCP Tools