docs: Confirm Phase 2.3 completion

Phase 2.3 - JWT Authentication is COMPLETE.

All requirements implemented and tested.

Documentation:
- PHASE-2-3-COMPLETION-REPORT.md - Detailed analysis
- PHASE-2-3-SUMMARY.md - Quick summary
- STATUS.md - Updated project status

Phase 2.3: ✅ COMPLETE
Phase 2.4: 🚧 67% Complete

PHASE-2-3-SUMMARY.md

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+# Phase 2.3 Status: ✅ COMPLETE
+
+**Date**: 2026-02-15 20:45:00 UTC
+
+---
+
+## Quick Summary
+
+**Phase 2.3 - JWT Authentication is COMPLETE.**
+
+All requirements implemented:
+- ✅ JWT token system (access + refresh)
+- ✅ Token rotation and revocation
+- ✅ Authentication endpoints (register, login, refresh, logout)
+- ✅ PBKDF2 password hashing
+- ✅ Protected route middleware
+- ✅ Public/Protected route separation
+
+**No pending items from Phase 2.3.**
+
+---
+
+## What's Next?
+
+**Continue with Phase 2.4** or **start Phase 2.5**.
+
+Phase 2.4 is 67% complete (password recovery ✅, profile management ✅, email verification pending).
+
+---
+
+**Status**: ✅ Production Ready