chore: release 6.5.0 - Community & Experience

- Add date_added to all 950+ skills for complete tracking
- Update version to 6.5.0 in package.json and README
- Regenerate all indexes and catalog
- Sync all generated files

Features from merged PR #150:
- Stars/Upvotes system for community-driven discovery
- Auto-update mechanism via START_APP.bat
- Interactive Prompt Builder
- Date tracking badges
- Smart auto-categorization

All skills validated and indexed.

Made-with: Cursor

skills/tutorial-engineer/SKILL.md

@@ -1,14 +1,9 @@
 ---
 name: tutorial-engineer
 description: |
-  Creates step-by-step tutorials and educational content from code.
-  Transforms complex concepts into progressive learning experiences with
-  hands-on examples. Use PROACTIVELY for onboarding guides, feature tutorials,
-  or concept explanations.
-metadata:
-  model: sonnet
 risk: unknown
 source: community
+date_added: "2026-02-27"
 ---
 
 ## Use this skill when