chore: complete v1.0 Member Notes System milestone

Archive roadmap and requirements to milestones/v1.0-*.
Evolve PROJECT.md with validated requirements and decisions.
Reorganize ROADMAP.md with milestone grouping.
Delete REQUIREMENTS.md (fresh for next milestone).

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Co-Authored-By: Claude <noreply@anthropic.com>
Co-Authored-By: Happy <yesreply@happy.engineering>

.planning/milestones/v1.0-REQUIREMENTS.md

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+# Requirements Archive: v1.0 Member Notes System
+
+**Archived:** 2026-02-13
+**Status:** SHIPPED
+
+---
+
+## v1 Requirements — All Shipped
+
+### Note Creation
+
+- [x] **NOTE-01**: Admin can add a text note to any member inline from the member list — Phase 2
+- [x] **NOTE-02**: Each note stores text content, author (current user), and creation datetime — Phase 1
+- [x] **NOTE-03**: Note submission uses AJAX (Axios) with CSRF protection — no page reload — Phase 2
+
+### Note Display
+
+- [x] **DISP-01**: Each member row shows a note count badge indicating number of notes — Phase 2
+- [x] **DISP-02**: Clicking the badge expands an inline panel showing full note history (newest first) — Phase 3
+- [x] **DISP-03**: Each note displays author name and formatted datetime — Phase 3
+- [x] **DISP-04**: Notes can be filtered/searched by text content within a member's note history — Phase 3
+
+### Data Layer
+
+- [x] **DATA-01**: Notes use polymorphic relationship (`notable_type`/`notable_id`) — Phase 1
+- [x] **DATA-02**: Migration includes proper indexes for member lookups and chronological ordering — Phase 1
+- [x] **DATA-03**: Member list uses eager loading (`withCount('notes')`) to prevent N+1 queries — Phase 1
+
+### Access & Audit
+
+- [x] **ACCS-01**: All admin roles can view and write notes (reuses existing `admin` middleware) — Phase 1
+- [x] **ACCS-02**: Note creation is logged via `AuditLogger::log()` — Phase 1
+- [x] **ACCS-03**: Dark mode fully supported on all note UI elements — Phase 2
+
+### UI/UX
+
+- [x] **UI-01**: All UI text in Traditional Chinese — Phase 2
+- [x] **UI-02**: Note quick-add works correctly across paginated member list pages — Phase 2
+- [x] **UI-03**: Alpine.js manages inline state (expand/collapse, form submission, loading states) — Phase 3
+
+## Traceability
+
+| Requirement | Phase | Status |
+|-------------|-------|--------|
+| NOTE-01 | Phase 2 | ✓ Shipped |
+| NOTE-02 | Phase 1 | ✓ Shipped |
+| NOTE-03 | Phase 2 | ✓ Shipped |
+| DISP-01 | Phase 2 | ✓ Shipped |
+| DISP-02 | Phase 3 | ✓ Shipped |
+| DISP-03 | Phase 3 | ✓ Shipped |
+| DISP-04 | Phase 3 | ✓ Shipped |
+| DATA-01 | Phase 1 | ✓ Shipped |
+| DATA-02 | Phase 1 | ✓ Shipped |
+| DATA-03 | Phase 1 | ✓ Shipped |
+| ACCS-01 | Phase 1 | ✓ Shipped |
+| ACCS-02 | Phase 1 | ✓ Shipped |
+| ACCS-03 | Phase 2 | ✓ Shipped |
+| UI-01 | Phase 2 | ✓ Shipped |
+| UI-02 | Phase 2 | ✓ Shipped |
+| UI-03 | Phase 3 | ✓ Shipped |
+
+**Coverage:** 16/16 requirements shipped (100%)
+
+---
+*Archived: 2026-02-13*