feat: v2.1.0 - Selective saving, cleanup command, and SessionEnd hook

New features:
- /learn:analyze now uses signal detection to save only valuable lessons
  - Explicit commands: "ține minte", "remember", "memorează"
  - Stated preferences: "întotdeauna", "always", "never"
  - Repeated corrections (2+ times)
  - Historical references: "cum am discutat", "as we discussed"
- New /learn:cleanup command for memory hygiene
  - Scoring system for entry quality
  - Conservative mode with confirmation
  - Upgrade option to rewrite entries
- SessionEnd hook shows reminder on /exit, /clear, Ctrl+D
- Metadata tracking: source, confidence, reinforced, trigger

Changes:
- analyze.md: Added Pas 3.5 for signal detection
- cleanup.md: New command for reviewing/deleting entries
- hooks.json: Changed from Stop to SessionEnd
- scripts/session-end-reminder.sh: New reminder script
- Templates updated with metadata fields
- Documentation updated for v2.1.0

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

plugins/learn/.claude-plugin/plugin.json

@@ -1,7 +1,7 @@
 {
   "name": "learn",
-  "description": "Claude Learn: Session analysis for patterns and gotchas with domain-based memory",
-  "version": "2.0.0",
+  "description": "Claude Learn: Session analysis for patterns and gotchas with domain-based memory, selective saving, and memory hygiene",
+  "version": "2.1.0",
   "author": {
     "name": "Romfast Team"
   }