sync: malware page, security alerts, review diagnostics, skill detail improvements

- Add malware security advisory page and SecurityAlertBanner component
- Add review diagnostics API and reviewed stats page
- Improve skill detail page with better scoring display and metadata
- Update review API endpoints with enhanced filtering and stats
- Add skill file serving improvements and cache enhancements
- Remove legacy curation scripts (moved to internal tooling)
- Update CLI search with score filtering support

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

apps/cli/package.json

@@ -1,6 +1,6 @@
 {
   "name": "skillhub",
-  "version": "0.2.9",
+  "version": "0.2.11",
   "description": "CLI tool for managing AI Agent skills - search, install, and update skills for Claude, Codex, Copilot, and more",
   "author": "SkillHub Contributors",
   "license": "MIT",