docs(03-02): complete UI atom components plan

- SUMMARY.md for BackendCard, PasswordField, FieldRenderer, AzureAuthToggle
- STATE.md updated with progress (77%), decisions, metrics
- ROADMAP.md updated (phase 3: 2/5 plans complete)

.planning/STATE.md

@@ -3,14 +3,14 @@ gsd_state_version: 1.0
 milestone: v1.0
 milestone_name: milestone
 status: executing
-stopped_at: Completed 03-wizard-ui-03-01-PLAN.md
-last_updated: "2026-03-27T08:27:26.136Z"
+stopped_at: Completed 03-wizard-ui-03-02-PLAN.md
+last_updated: "2026-03-27T08:30:44.348Z"
 last_activity: 2026-03-26 — Completed plan 01-02 (Backend Schema Registry)
 progress:
   total_phases: 4
   completed_phases: 2
   total_plans: 13
-  completed_plans: 9
+  completed_plans: 10
   percent: 50
 ---
 
@@ -56,6 +56,7 @@ Progress: [█████░░░░░] 50%
 | Phase 02-generators P04 | 5min | 1 tasks | 1 files |
 | Phase 02-generators P03 | resumed | 2 tasks | 3 files |
 | Phase 03-wizard-ui P01 | 1min | 2 tasks | 5 files |
+| Phase 03-wizard-ui P02 | 2min | 2 tasks | 4 files |
 
 ## Accumulated Context
 
@@ -89,6 +90,8 @@ Recent decisions affecting current work:
 - [Phase 03-wizard-ui]: jsdom environment added to vite.config.ts test block — no triple-slash vitest reference needed with vitest ^4.x
 - [Phase 03-wizard-ui]: Wave 0 stubs use expect.fail('not yet implemented') for named RED failures rather than relying on import errors
 - [Phase 03-wizard-ui]: Requirement IDs embedded in describe block names (WIZD-01, BACK-02, etc.) for direct test-to-requirement traceability
+- [Phase 03-wizard-ui]: AzureAuthToggle uses CSS hidden class (not conditional rendering) to preserve both sas_url and key in react-hook-form state when toggling
+- [Phase 03-wizard-ui]: FieldRenderer hides provider field for single-option selects and auto-registers via hidden input
 
 ### Pending Todos
 
@@ -102,6 +105,6 @@ None yet.
 
 ## Session Continuity
 
-Last session: 2026-03-27T08:27:26.134Z
-Stopped at: Completed 03-wizard-ui-03-01-PLAN.md
+Last session: 2026-03-27T08:30:44.343Z
+Stopped at: Completed 03-wizard-ui-03-02-PLAN.md
 Resume file: None