docs: create milestone v0.2 roadmap (4 phases, 40 requirements)

Phases 8–11: stack upgrade + backend decomposition, admin panel
rearchitecture, UX & interaction, visual design + responsive layout.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.planning/REQUIREMENTS.md

@@ -2,7 +2,7 @@
 
 **Milestone:** v0.2 — UI Overhaul and Optimization
 **Created:** 2026-06-07
-**Total requirements:** 36
+**Total requirements:** 40
 
 ---
 
@@ -106,8 +106,45 @@ Every line of code written or modified in v0.2 must be:
 
 ## Traceability
 
-*Filled by roadmapper after phases are defined.*
-
 | REQ-ID | Phase | Plan |
 |--------|-------|------|
-| — | — | — |
+| PERF-01 | Phase 8 | Pending |
+| CODE-01 | Phase 8 | Pending |
+| CODE-02 | Phase 8 | Pending |
+| CODE-03 | Phase 8 | Pending |
+| CODE-04 | Phase 8 | Pending |
+| CODE-08 | Phase 8 | Pending |
+| ADMIN-08 | Phase 9 | Pending |
+| ADMIN-09 | Phase 9 | Pending |
+| ADMIN-10 | Phase 9 | Pending |
+| ADMIN-11 | Phase 9 | Pending |
+| ADMIN-12 | Phase 9 | Pending |
+| CODE-06 | Phase 9 | Pending |
+| CODE-09 | Phase 9 | Pending |
+| UX-01 | Phase 10 | Pending |
+| UX-02 | Phase 10 | Pending |
+| UX-03 | Phase 10 | Pending |
+| UX-04 | Phase 10 | Pending |
+| UX-05 | Phase 10 | Pending |
+| UX-06 | Phase 10 | Pending |
+| UX-07 | Phase 10 | Pending |
+| UX-08 | Phase 10 | Pending |
+| UX-09 | Phase 10 | Pending |
+| UX-10 | Phase 10 | Pending |
+| UX-11 | Phase 10 | Pending |
+| UX-12 | Phase 10 | Pending |
+| UX-13 | Phase 10 | Pending |
+| UX-14 | Phase 10 | Pending |
+| CODE-05 | Phase 10 | Pending |
+| VISUAL-01 | Phase 11 | Pending |
+| VISUAL-02 | Phase 11 | Pending |
+| VISUAL-03 | Phase 11 | Pending |
+| VISUAL-04 | Phase 11 | Pending |
+| RESP-01 | Phase 11 | Pending |
+| RESP-02 | Phase 11 | Pending |
+| RESP-03 | Phase 11 | Pending |
+| RESP-04 | Phase 11 | Pending |
+| RESP-05 | Phase 11 | Pending |
+| CODE-07 | Phase 11 | Pending |
+| PERF-02 | Phase 11 | Pending |
+| PERF-03 | Phase 11 | Pending |