Remove deprecated entries from Makefile and update documentation

🗑️ Removed:
- Legacy Support section with deprecated targets (k8s-deploy, k8s-undeploy, deploy, undeploy)
- 18 lines of deprecated makefile targets and warnings

📚 Documentation Updates:
- README.md: Updated Kubernetes deployment commands and project structure
- KUSTOMIZE_MIGRATION.md: Replaced deprecated commands with current ones
- k8s-kustomize/README.md: Updated deployment command references
- APP_NAME_CONFIGURATION.md: Updated deployment example command
- config/README.md: Replaced migration script references with config generation
- ARCHITECTURE_MIGRATION.md: Updated to reflect completed migration status
- PROJECT_STRUCTURE.md: Updated services structure to show unified database service
- IMPLEMENTATION_SUMMARY.md: Updated legacy compatibility notes

✨ Improvements:
- Clean Makefile with only current, supported targets
- Consistent documentation referring to current command structure
- Removed all references to deleted CouchDB service files
- Updated project structure diagrams to reflect current architecture

🧪 Verification:
- All 292 unit tests passing
- Integration tests passing
- Makefile help command displays cleanly
- No deprecated command references remain in documentation

docs/ARCHITECTURE_MIGRATION.md

@@ -7,7 +7,7 @@ This document outlines the major architectural improvements implemented to elimi
 ### 1. **Consolidated Database Services** ✅
 
 - **Before**: Duplicate `CouchDBService` implementations in `couchdb.ts` and `couchdb.production.ts` (~800 lines of duplicated code)
-- **After**: Single `DatabaseService` with strategy pattern switching between `MockDatabaseStrategy` and `ProductionDatabaseStrategy`
+- **After**: Single `DatabaseService` with strategy pattern switching between `MockDatabaseStrategy` and `ProductionDatabaseStrategy` (COMPLETED)
 - **Benefits**: Eliminates duplication, easier testing, consistent interface
 
 ### 2. **Centralized Configuration** ✅
@@ -35,10 +35,10 @@ This document outlines the major architectural improvements implemented to elimi
 #### Old Pattern (Deprecated)
 
 ```typescript
-import { dbService } from '../services/couchdb.factory';
+import { databaseService } from '../services/database';
 
 // Direct usage
-const user = await dbService.getUserById(userId);
+const user = await databaseService.getUserById(userId);
 ```
 
 #### New Pattern (Recommended)
@@ -52,7 +52,7 @@ const user = await databaseService.getUserById(userId);
 
 #### Legacy Compatibility
 
-The old `couchdb.factory.ts` still works but shows a deprecation warning. Migrate when convenient.
+The old CouchDB files have been removed. Use the new unified database service.
 
 ### Configuration Migration
 
@@ -106,20 +106,17 @@ log.error('Critical error', 'STARTUP', { config }, error);
 
 ```
 services/
-├── database/                    # 🆕 Consolidated database layer
+├── database/                    # ✅ Consolidated database layer
 │   ├── index.ts                # Main exports
 │   ├── types.ts                # Interfaces and types
 │   ├── DatabaseService.ts      # Main service with strategy pattern
 │   ├── MockDatabaseStrategy.ts # Development/test implementation
 │   └── ProductionDatabaseStrategy.ts # Production CouchDB implementation
-├── logging/                     # 🆕 Centralized logging
+├── logging/                     # ✅ Centralized logging
 │   ├── index.ts                # Main exports
 │   └── Logger.ts               # Logger implementation
-├── couchdb.factory.ts          # ⚠️ Legacy compatibility (deprecated)
-├── couchdb.ts                  # ⚠️ Will be removed in future version
-└── couchdb.production.ts       # ⚠️ Will be removed in future version
 
-config/                          # 🆕 Centralized configuration
+config/                          # ✅ Centralized configuration
 └── app.config.ts               # Main configuration with validation
 ```
 
@@ -227,8 +224,8 @@ The application now validates configuration on startup and provides clear error
 
 ### Planned for Next Version
 
-1. **Complete Legacy Removal**: Remove deprecated `couchdb.ts` and `couchdb.production.ts`
-2. **Enhanced Monitoring**: Structured metrics and health checks
+1. **Enhanced Monitoring**: Structured metrics and health checks (legacy files removed ✅)
+2. **Performance Optimization**: Connection pooling and caching strategies
 3. **Configuration Hot Reload**: Runtime configuration updates
 4. **Advanced Logging**: Log aggregation and remote logging support
 
@@ -242,7 +239,7 @@ The application now validates configuration on startup and provides clear error
 
 ### Q: Do I need to update my existing code immediately?
 
-**A**: No, the legacy `couchdb.factory.ts` still works with a deprecation warning. Migrate when convenient.
+**A**: The legacy files have been removed. Use the new unified database service: `import { databaseService } from './services/database'`.
 
 ### Q: Will my environment variables still work?