docs(01-01): complete design token foundation plan

- Add 01-01-SUMMARY.md with full task record and decisions
- Update STATE.md with progress, decisions, and session info (50% phase complete)
- Update ROADMAP.md plan progress (phase 1: 1/2 plans done)
- Mark DSGN-01, DSGN-02, DSGN-05 requirements complete

.planning/ROADMAP.md

@@ -29,7 +29,7 @@ Decimal phases appear between their surrounding integers in numeric order.
   3. FinancialOverview and AvailableBalance render as visually dominant hero elements with clear typographic hierarchy above secondary content
   4. Amount values across all tables and summaries show green for positive, destructive red for negative, and amber for over-budget — applied consistently
   5. A single `lib/palette.ts` file exists as the source of truth for all category-to-color mappings; `InlineEditCell.tsx` is extracted as a shared component replacing three duplicated local definitions
-**Plans:** 2 plans
+**Plans:** 1/2 plans executed
 Plans:
 - [ ] 01-01-PLAN.md — CSS token foundation, palette.ts module, and test infrastructure
 - [ ] 01-02-PLAN.md — Component wiring, InlineEditCell extraction, and visual verification
@@ -75,7 +75,7 @@ Phases execute in numeric order: 1 → 2 → 3 → 4
 
 | Phase | Plans Complete | Status | Completed |
 |-------|----------------|--------|-----------|
-| 1. Design Token Foundation | 0/2 | Planning complete | - |
+| 1. Design Token Foundation | 1/2 | In Progress|  |
 | 2. Layout and Brand Identity | 0/TBD | Not started | - |
 | 3. Interaction Quality and Completeness | 0/TBD | Not started | - |
 | 4. Chart Polish and Bug Fixes | 0/TBD | Not started | - |