docs(03-04): complete reward screen and game loop plan

- SUMMARY.md for reward module and game flow wiring
- STATE.md updated with position, decisions, metrics
- ROADMAP.md updated with plan progress
- Requirements RWRD-01 through RWRD-04 marked complete

.planning/STATE.md

@@ -2,15 +2,15 @@
 gsd_state_version: 1.0
 milestone: v1.0
 milestone_name: milestone
-status: executing
-stopped_at: Completed 03-02-PLAN.md
-last_updated: "2026-03-29T11:49:51.101Z"
+status: verifying
+stopped_at: Completed 03-04-PLAN.md
+last_updated: "2026-03-29T11:54:23.974Z"
 last_activity: 2026-03-29
 progress:
   total_phases: 4
-  completed_phases: 2
+  completed_phases: 3
   total_plans: 15
-  completed_plans: 14
+  completed_plans: 15
   percent: 0
 ---
 
@@ -27,7 +27,7 @@ See: .planning/PROJECT.md (updated 2026-03-29)
 
 Phase: 03 (komplettes-spielerlebnis) — EXECUTING
 Plan: 5 of 5
-Status: Ready to execute
+Status: Phase complete — ready for verification
 Last activity: 2026-03-29
 
 Progress: [░░░░░░░░░░] 0%
@@ -66,6 +66,7 @@ Progress: [░░░░░░░░░░] 0%
 | Phase 03 P01 | 3min | 2 tasks | 7 files |
 | Phase 03 P05 | 2min | 2 tasks | 4 files |
 | Phase 03 P02 | 4min | 2 tasks | 6 files |
+| Phase 03 P04 | 3min | 2 tasks | 4 files |
 
 ## Accumulated Context
 
@@ -98,6 +99,8 @@ Recent decisions affecting current work:
 - [Phase 03]: Access code hardcoded as 1234 for single-user private app
 - [Phase 03]: Word mode uses intervalMs=0 (no timing pressure for word display)
 - [Phase 03]: Discover phase skips space key; review pulls 2 words from each of last 2-3 levels
+- [Phase 03]: Pre-generation uses fire-and-forget pattern: startPreGeneration() at lesson start, awaited on reward screen
+- [Phase 03]: Progress migration function ensures backward compat with older IndexedDB data
 
 ### Pending Todos
 
@@ -109,6 +112,6 @@ None yet.
 
 ## Session Continuity
 
-Last session: 2026-03-29T11:49:51.094Z
-Stopped at: Completed 03-02-PLAN.md
+Last session: 2026-03-29T11:54:23.968Z
+Stopped at: Completed 03-04-PLAN.md
 Resume file: None