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+# Phase 1 Audit Report - Mana-Loop Game
+
+## Overview
+Audit completed on: 2024-04-24
+Scope: `/home/user/repos/Mana-Loop/src/` directory
+Initial build status: ✅ Passing (Next.js 16.2.4 build succeeds)
+
+---
+
+## 1. Files Over 300 Lines (Splitting Candidates)
+
+| File Path | Line Count | Purpose | Split Candidate |
+|-----------|------------|---------|-----------------|
+| `src/lib/game/store.ts` | 2464 | Monolithic legacy game store | **YES (HIGH PRIORITY)** |
+| `src/lib/game/skill-evolution.ts` | 2312 | All skill talent trees | **YES (HIGH PRIORITY)** |
+| `src/lib/game/constants.ts` | 1436 | Mixed game constants | **YES (HIGH PRIORITY)** |
+| `src/lib/game/data/enchantment-effects.ts` | 846 | Enchantment effect definitions | **YES (MEDIUM PRIORITY)** |
+| `src/components/game/tabs/CraftingTab.tsx` | 965 | Crafting UI (4 stages) | **YES (MEDIUM PRIORITY)** |
+| `src/components/game/tabs/DebugTab.tsx` | 700 | Debug/development UI | **YES (LOW PRIORITY)** |
+| `src/lib/game/types.ts` | 516 | Central type definitions | **YES (MEDIUM PRIORITY)** |
+| `src/lib/game/computed-stats.ts` | 492 | Mixed utility/stat functions | **YES (MEDIUM PRIORITY)** |
+| `src/app/page.tsx` | 465 | Main game page component | **YES (LOW PRIORITY)** |
+| `src/components/game/GameContext.tsx` | 405 | Unified store context | **YES (LOW PRIORITY)** |
+| `src/lib/game/utils.ts` | 372 | Mixed utility functions | **YES (MEDIUM PRIORITY)** |
+
+**Key Observation**: Project is mid-refactor from legacy `store.ts` to slice-based architecture (`lib/game/stores/`). Priority should be completing this migration.
+
+---
+
+## 2. Unused Exports (207 Total)
+
+### Game Components (Never Imported)
+- `src/components/game/ComboMeter.tsx` - `ComboMeter`
+- `src/components/game/GrimoireTab.tsx` - `GrimoireTab`
+- `src/components/game/layout/GameFooter.tsx` - `GameFooter`
+- `src/components/game/layout/GameHeader.tsx` - `GameHeader`
+- `src/components/game/layout/GameSidebar.tsx` - `GameSidebar`
+- `src/components/game/shared/GameOverScreen.tsx` - `GameOverScreen`
+
+### Tab Component Props (Unused Type Exports)
+- All `Tabs/*TabProps` types in `src/components/game/tabs/` (12 total)
+
+### Library Files (Unused Exports)
+- `src/lib/game/attunements.ts` - 8 unused exports
+- `src/lib/game/constants.ts` - 15+ unused exports
+- `src/lib/game/computed-stats.ts` - 5 unused exports
+- `src/lib/game/effects.ts` - 5 unused exports
+- `src/lib/game/store.ts` - 7 unused exports
+- `src/lib/game/types.ts` - 20+ unused type exports
+- `src/lib/game/upgrade-effects.ts` - 6 unused exports
+- `src/lib/game/utils.ts` - 2 unused exports
+
+### UI Components (shadcn/ui - Never Imported)
+28 unused shadcn/ui components in `src/components/ui/` (accordion, alert, calendar, chart, etc.)
+
+---
+
+## 3. Dead Imports (56 Total)
+
+### Top-Level Components
+- `src/app/page.tsx`: 5 dead imports (`fmtDec`, `getDamageBreakdown`, `SKILL_EVOLUTION_PATHS`, etc.)
+- `src/components/game/SkillsTab.tsx`: 4 dead imports
+- `src/components/game/SpellsTab.tsx`: 4 dead imports
+- `src/components/game/StatsTab.tsx`: 5 dead imports
+
+### Library Files
+- `src/lib/game/store.ts`: 1 dead import
+- `src/lib/game/store/combatSlice.ts`: 3 dead imports
+- `src/lib/game/store/computed.ts`: 4 dead imports
+- `src/lib/game/store/skillSlice.ts`: 3 dead imports
+
+---
+
+## 4. Unreferenced Files (57 Total)
+
+### Game Components (Never Imported)
+- 7 game components including `ComboMeter.tsx`, `GameFooter.tsx`, etc.
+
+### UI Components
+- 28 unused shadcn/ui components
+
+### Library Files
+- Old store architecture: `src/lib/game/store/*.ts` (10 files)
+- Old stores: `src/lib/game/stores/*.ts` (8 files)
+- Test files: `src/lib/game/*test.ts` (4 files)
+- `src/lib/db.ts` (Prisma client, may be runtime-used)
+
+---
+
+## 5. TODO/FIXME Comments
+✅ **None found** in source code (only "Temp" substring matches from temporal/tempest references)
+
+---
+
+## 6. Unimplemented Stubs & Unused Effects
+
+### Critical Issues
+1. **`EXECUTIONER` effect used but not defined** (HIGH SEVERITY)
+   - Referenced in `store.ts:1085`, `combatSlice.ts:102`, `gameStore.ts:265`
+   - Missing from `SPECIAL_EFFECTS` in `upgrade-effects.ts`
+   - **Will cause runtime errors**
+
+### Unused Effects
+2. **51/59 `SPECIAL_EFFECTS` constants unused** (Medium severity)
+   - Only 8/59 effects are actually checked via `hasSpecial()`
+   - Examples: `FLOW_SURGE`, `MANA_OVERFLOW`, `FIRST_STRIKE`, etc.
+
+3. **5 unused enchantment `specialId` values**
+   - `spellEcho10`, `fireBlade`, `frostBlade`, `lightningBlade`, `voidBlade`
+   - Defined in `enchantment-effects.ts` but never checked in game logic
+
+4. **~200+ `specialId` values in `skill-evolution.ts` never checked**
+   - Most `specialId` values added to `specials` Set but no corresponding `hasSpecial()` check
+
+### Empty Functions
+✅ **None found** - no empty function stubs detected
+
+---
+
+## 7. Summary of Priority Actions
+
+### Phase 2 (Safe Deletions) - Recommended Deletions
+1. Remove 28 unused shadcn/ui components from `src/components/ui/`
+2. Remove dead imports (56 total) across all files
+3. Remove old store architecture files if confirmed unused:
+   - `src/lib/game/store/*.ts`
+   - `src/lib/game/stores/*.ts`
+4. Remove unused game components if not needed:
+   - `ComboMeter.tsx`, `GameFooter.tsx`, `GameHeader.tsx`, etc.
+
+### Phase 3 (Refactor Large Files) - Recommended Splits
+1. **HIGH PRIORITY**: Split `src/lib/game/store.ts` (2464 lines) - complete migration to slice architecture
+2. Split `src/lib/game/skill-evolution.ts` (2312 lines) by skill category
+3. Split `src/lib/game/constants.ts` (1436 lines) into domain-specific files
+4. Split `src/components/game/tabs/CraftingTab.tsx` (965 lines) by crafting stage
+
+### Phase 4 (Implement Missing Effects) - Critical Fixes
+1. **CRITICAL**: Add `EXECUTIONER: 'executioner'` to `SPECIAL_EFFECTS` in `upgrade-effects.ts`
+2. Either implement or remove 51 unused `SPECIAL_EFFECTS` constants
+3. Either implement or remove 5 unused enchantment `specialId` values
+4. Audit ~200 `specialId` values in `skill-evolution.ts`
+
+---
+
+## Verification
+- Initial build: ✅ Passing
+- No TODO/FIXME comments found
+- No empty function stubs found
+- Runtime error identified: Missing `EXECUTIONER` effect definition