docs(02-01): complete config loader & Gemini API client plan

- SUMMARY.md with 18 tests, 6 files, 3min execution
- STATE.md advanced to plan 2/5, 70% progress
- ROADMAP.md updated with plan progress
- Requirements GAPI-01, GAPI-02, GAPI-03, GAPI-06 marked complete

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.planning/STATE.md

@@ -3,14 +3,14 @@ gsd_state_version: 1.0
 milestone: v1.0
 milestone_name: milestone
 status: executing
-stopped_at: Completed 02-02-PLAN.md
-last_updated: "2026-03-29T09:56:04.201Z"
+stopped_at: Completed 02-01-PLAN.md
+last_updated: "2026-03-29T09:57:41.199Z"
 last_activity: 2026-03-29
 progress:
   total_phases: 4
   completed_phases: 1
   total_plans: 10
-  completed_plans: 6
+  completed_plans: 7
   percent: 0
 ---
 
@@ -26,7 +26,7 @@ See: .planning/PROJECT.md (updated 2026-03-29)
 ## Current Position
 
 Phase: 02 (gemini-integration-asset-pipeline) — EXECUTING
-Plan: 2 of 5
+Plan: 3 of 5
 Status: Ready to execute
 Last activity: 2026-03-29
 
@@ -58,6 +58,7 @@ Progress: [░░░░░░░░░░] 0%
 | Phase 01 P04 | 2min | 2 tasks | 6 files |
 | Phase 01 P05 | 2min | 2 tasks | 4 files |
 | Phase 02 P02 | 2min | 2 tasks | 8 files |
+| Phase 02 P01 | 3min | 1 tasks | 6 files |
 
 ## Accumulated Context
 
@@ -77,6 +78,9 @@ Recent decisions affecting current work:
 - [Phase 01]: Forest screen re-initializes on every navigation to reflect updated progress
 - [Phase 02]: Fallback texts use ue/oe/ae transliteration for umlauts, consistent with existing codebase convention
 - [Phase 02]: SVGs use gradient-based rendering under 2KB each for watercolor feel
+- [Phase 02]: Rate limiting stored in Settings singleton, no new IndexedDB store
+- [Phase 02]: Image generation no retry (expensive), text retries 3x exponential backoff
+- [Phase 02]: Config loader caches after first fetch, resetConfigCache() for testing
 
 ### Pending Todos
 
@@ -88,6 +92,6 @@ None yet.
 
 ## Session Continuity
 
-Last session: 2026-03-29T09:56:04.194Z
-Stopped at: Completed 02-02-PLAN.md
+Last session: 2026-03-29T09:57:41.192Z
+Stopped at: Completed 02-01-PLAN.md
 Resume file: None