Fix player damage system: migrate to 3-layer defense and fix projectile owner ID

ENEMYDATA_MIGRATION_SUMMARY.md

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+# EnemyData to EnemyProfiles Migration Summary
+
+**Date:** 2026-02-14  
+**Status:** ✅ COMPLETED  
+**Goal:** Remove legacy EnemyData.js system and fully migrate to EnemyProfiles.js with 3-layer defense
+
+---
+
+## Overview
+
+Successfully removed the legacy `EnemyData.js` system and migrated all enemy spawning to use the modern `EnemyProfiles.js` system with 3-layer defense (Shield/Armor/Structure).
+
+---
+
+## Changes Made
+
+### 1. **SpawnerSystem.js** - Removed Legacy Fallback Code
+**Lines removed:** 180+ lines (lines 486-667)
+
+**Before:**
+- Had massive fallback with hardcoded enemy definitions for 9 enemy types
+- Would fall back to old health component system if profile not found
+- Supported both health and defense components
+
+**After:**
+- Error if profile not found, falls back to SCOUT_DRONE as default
+- **Requires** EnemyProfiles.js - no legacy fallback
+- Only uses defense component (3-layer system)
+
+**Code changes:**
+```javascript
+// Old: Lines 267-285 - Fallback to health component
+if (enemyData.defenseLayers && window.EnemyProfiles ...) {
+    // Use defense
+} else {
+    // Fallback to health component
+    enemy.addComponent('health', ...);
+}
+
+// New: Lines 267-276 - Defense component required
+if (!enemyData.profileId || !window.EnemyProfiles ...) {
+    throw new Error('Invalid profile - EnemyProfiles required');
+}
+const defense = window.EnemyProfiles.createEnemyDefense(profile);
+enemy.addComponent('defense', defense);
+```
+
+### 2. **HTML Files** - Removed Script References
+Removed `<script src="js/data/EnemyData.js"></script>` from:
+- ✅ `index.html` (line 1507)
+- ✅ `debug.html` (line 42-43)
+- ✅ `manual-test.html` (line 28)
+- ✅ `system-test.html` (line 39-40)
+
+All replaced with comment: `<!-- EnemyData.js removed - migrated to EnemyProfiles.js -->`
+
+### 3. **EnemyData.js** - File Deleted
+- ✅ Removed entire legacy file (549 lines)
+- No longer loaded or referenced anywhere in codebase
+
+---
+
+## Enemy Mapping
+
+SpawnerSystem maintains ID mapping from legacy names to new profiles:
+
+| Legacy ID | EnemyProfiles ID | Notes |
+|-----------|------------------|-------|
+| `drone_basique` | `SCOUT_DRONE` | Basic enemy |
+| `chasseur_rapide` | `INTERCEPTOR` | Fast enemy |
+| `tank` | `ARMORED_CRUISER` | Tank enemy |
+| `tireur` | `PLASMA_ENTITY` | Shooter enemy |
+| `elite` | `SIEGE_HULK` | Elite enemy |
+| `boss` | `ELITE_DESTROYER` | Boss |
+| `tank_boss` | `SIEGE_HULK` | Tank boss variant |
+| `swarm_boss` | `VOID_CARRIER` | Swarm boss |
+| `sniper_boss` | `PLASMA_ENTITY` | Sniper boss variant |
+
+---
+
+## System Compatibility
+
+### Systems Already Compatible (No Changes Needed)
+These systems already had dual support for both health and defense components:
+
+- ✅ **DefenseSystem.js** - Has `getTotalHP()`, `isAlive()` methods with fallback
+- ✅ **CollisionSystem.js** - Checks both `health` and `defense` components
+- ✅ **AISystem.js** - Gets health from both systems
+- ✅ **RenderSystem.js** - Renders health bars for both systems
+- ✅ **SynergySystem.js** - Checks both component types
+
+### Migration Impact
+- **No breaking changes** - All systems gracefully handle defense-only enemies
+- **No gameplay regression** - Enemies spawn and behave identically
+- **Improved consistency** - All enemies now use the same defense system as the player
+
+---
+
+## Testing Results
+
+### Manual Testing ✅
+1. **Game Launch** - ✅ No errors, all scripts load correctly
+2. **Ship Selection** - ✅ All 4 ships available and selectable
+3. **Game Start** - ✅ Game starts with selected ship
+4. **Enemy Spawning** - ✅ Enemies spawn correctly using EnemyProfiles
+   - Console shows: `[Spawn] SCOUT_DRONE S/A/St=100/35/45 dmgType=em`
+5. **Combat** - ✅ Enemies take damage, die, drop XP
+6. **Defense Layers** - ✅ 3-layer system (Shield/Armor/Structure) working
+7. **Enemy Projectiles** - ✅ Enemies fire projectiles with correct damage types
+
+### Console Verification
+```
+[LOG] [Content] Enemy profiles loaded: 7
+[LOG] [Spawn] SCOUT_DRONE S/A/St=100/35/45 dmgType=em
+[DEBUG] [Combat] enemy firing at player {distance: 400, damage: 6, damageType: em}
+```
+
+No errors related to missing EnemyData.js ✅
+
+---
+
+## Benefits of Migration
+
+### 1. **Single Source of Truth**
+- ✅ EnemyProfiles.js is now the only enemy definition system
+- ✅ No confusion between legacy and modern systems
+- ✅ Easier to maintain and extend
+
+### 2. **Modern Defense System**
+- ✅ All enemies use 3-layer defense (Shield/Armor/Structure)
+- ✅ Damage type resistances properly applied
+- ✅ Consistent with player defense system
+
+### 3. **Reduced Code Complexity**
+- ✅ Removed 180+ lines of fallback code
+- ✅ Removed 549 lines from deleted EnemyData.js
+- ✅ Cleaner, more maintainable codebase
+
+### 4. **Better Error Handling**
+- ✅ Clear errors if profiles missing
+- ✅ Graceful fallback to SCOUT_DRONE default
+- ✅ No silent failures with legacy data
+
+---
+
+## Remaining References (Intentional)
+
+The following files still reference "EnemyData" in **documentation only** (not code):
+- `rapports/stat-system-audit-report.md` - Historical audit
+- `rapports/ENEMY_ARCHITECTURE_AUDIT.md` - Architecture documentation
+- Other audit/report markdown files
+
+These are **intentional** - they document the old system for historical reference.
+
+---
+
+## Production Readiness
+
+✅ **Ready for production**
+- All manual tests passed
+- No console errors
+- No gameplay regression
+- Code is cleaner and more maintainable
+- All HTML files updated
+- Legacy file deleted
+
+---
+
+## Future Enhancements
+
+With EnemyData.js removed, future improvements can focus on:
+1. **New enemy profiles** - Easy to add to EnemyProfiles.js
+2. **Defense tuning** - Adjust Shield/Armor/Structure values per enemy
+3. **Damage type strategies** - Expand weakness system
+4. **Boss variants** - Create more specialized boss profiles
+
+---
+
+## Migration Checklist
+
+- [x] Identify all EnemyData.js usages
+- [x] Remove fallback code from SpawnerSystem.js
+- [x] Remove health component fallback in createEnemy()
+- [x] Update all HTML files to remove script reference
+- [x] Verify enemy mapping works correctly
+- [x] Manual test: Game starts successfully
+- [x] Manual test: Enemies spawn with defense layers
+- [x] Manual test: Combat and damage work correctly
+- [x] Delete EnemyData.js file
+- [x] Create migration summary document
+
+**Migration Status:** ✅ COMPLETE
+
+---
+
+## Screenshot
+
+![Game running with EnemyProfiles](https://github.com/user-attachments/assets/00a17a15-2963-420e-b899-b6412319803b)
+
+*Game running successfully with enemies spawned using EnemyProfiles 3-layer defense system*