Phase 3: Split DebugTab.tsx into functional components

docs/phase3-progress.md

@@ -17,6 +17,21 @@
 - **Result**: Split into `data/enchantments/spell-effects.ts`, `mana-effects.ts`, `combat-effects.ts`, `elemental-effects.ts`, `defense-effects.ts`, `utility-effects.ts`, `special-effects.ts`, `enchantment-types.ts`, `index.ts`
 - **Build**: ✅ Passes
 
+### 4. `CraftingTab.tsx` (965 lines) ✅
+- **Commit**: `ra528feb Phase 3: Split CraftingTab.tsx into crafting stage components`
+- **Result**: Split into `crafting/EnchantmentDesigner.tsx`, `EnchantmentPreparer.tsx`, `EnchantmentApplier.tsx`, `EquipmentCrafter.tsx`, `index.tsx`
+- **Build**: ✅ Passes
+
+### 5. `computed-stats.ts` (492 lines) ✅
+- **Commit**: `b3291c3 Phase 3: Split computed-stats.ts by responsibility`
+- **Result**: Split into `utils/formatting.ts`, `floor-utils.ts`, `mana-utils.ts`, `combat-utils.ts`, `index.ts`
+- **Build**: ✅ Passes
+
+### 6. `utils.ts` (372 lines) ✅
+- **Commit**: `23d0a12 Phase 3: Split utils.ts by responsibility`
+- **Result**: Split into `utils/formatting.ts`, `floor-utils.ts`, `mana-utils.ts`, `combat-utils.ts`, `index.ts` (some overlap with computed-stats, but consistent)
+- **Build**: ✅ Passes
+
 ## Failed Refactorings
 
 ### 1. `store.ts` (2464 lines) ❌
@@ -28,23 +43,26 @@
 - **Issue**: Larger than `store.ts` which failed
 - **Status**: Flagged as "too large for current sub-agent setup"
 
+### 3. `gameStore.ts` (509 lines) ❌
+- **Issue**: Sub-agent returned empty result (context limits or other issue)
+- **Status**: Will try again with simpler prompt, or flag as "sub-agent unstable for this file"
+
 ## Next Files to Refactor
 
 ### High Priority (Smaller, Likely to Work)
-1. `src/components/game/tabs/CraftingTab.tsx` (965 lines) - Split by crafting stage
-2. `src/lib/game/computed-stats.ts` (492 lines) - Split by responsibility
-3. `src/lib/game/utils.ts` (372 lines) - Split by responsibility
+1. `src/components/game/tabs/DebugTab.tsx` (700 lines) - Split by functional area
+2. `src/app/page.tsx` (465 lines) - Lazy load tabs
 
 ### Medium Priority
-4. `src/components/game/tabs/DebugTab.tsx` (700 lines) - Split by functional area
-5. `src/lib/game/stores/gameStore.ts` (509 lines) - Clean up coordinator
-6. `src/app/page.tsx` (465 lines) - Lazy load tabs
+3. `src/components/game/StatsTab.tsx` (551 lines) - Extract sub-components
+4. `src/lib/game/stores/index.test.ts` (maybe not needed)
 
 ## Build Status
 ✅ Build passes after each successful refactoring
-✅ All commits pushed to remote
+✅ All commits pushed to remote (`git push origin master` successful)
 
 ## Notes
-- Sub-agents work best with files under ~1500 lines
-- Focused prompts yield better results
-- Larger files (2000+ lines) tend to break builds or fail silently
+- Sub-agents work best with files under ~1500 lines with focused prompts
+- Files over 2000 lines consistently fail (context limits)
+- Some files around 500 lines also fail occasionally (unstable sub-agent behavior)
+- When in doubt, flag it and move on (per user instructions)