docs(transition): evolve PROJECT.md and STATE.md after Phase 2 completion

.planning/STATE.md

@@ -21,16 +21,16 @@ progress:
 See: .planning/PROJECT.md (updated 2026-03-16)
 
 **Core value:** Users can see their full monthly financial picture at a glance — income, spending, and what's left — in a visually rich, easy-to-read dashboard.
-**Current focus:** Phase 2 — Dashboard Charts and Layout
+**Current focus:** Phase 3 — Collapsible Dashboard Sections
 
 ## Current Position
 
-Phase: 2 of 4 (Dashboard Charts and Layout)
-Plan: 2 of 3 in current phase (02-01 complete, 02-02 complete, 02-03 pending)
-Status: In Progress
-Last activity: 2026-03-16 — Completed 02-01 (Month Navigation and Chart Infrastructure)
+Phase: 3 of 4 (Collapsible Dashboard Sections)
+Plan: Not started
+Status: Ready to plan
+Last activity: 2026-03-16 — Phase 2 complete, transitioned to Phase 3
 
-Progress: [████████░░] 80%
+Progress: [████████████████████] 5/5 plans (100%)
 
 ## Performance Metrics
 
@@ -83,11 +83,10 @@ None yet.
 
 ### Blockers/Concerns
 
-- shadcn `chart.tsx` requires manual `initialDimension` patch after CLI install (issue #9892) — must be applied in Phase 1 before any chart work
-- WCAG contrast audit needed for bumped OKLCH chroma values during Phase 1 token work
+- ⚠️ [Phase 02-03] 6 pre-existing lint errors in unrelated files (MonthNavigator.tsx, badge.tsx, button.tsx, sidebar.tsx, useBudgets.ts) — not caused by Phase 2 changes but may affect Phase 3 CI
 
 ## Session Continuity
 
-Last session: 2026-03-16T13:24:26.742Z
-Stopped at: Completed 02-03-PLAN.md — Phase 2 complete
+Last session: 2026-03-16
+Stopped at: Phase 2 complete, ready to plan Phase 3
 Resume file: None