Refactor routing and proxy components for improved structure and compatibility

- Removed deprecated route utility functions in favor of direct matcher usage.
- Updated imports to reflect new module structure for routing utilities.
- Consolidated route manager functionality into SharedRouteManager for better consistency.
- Eliminated legacy routing methods and interfaces, streamlining the HttpProxy and associated components.
- Enhanced WebSocket and HTTP request handling to utilize the new unified HttpRouter.
- Updated route matching logic to leverage matcher classes for domain, path, and header checks.
- Cleaned up legacy compatibility code across various modules, ensuring a more maintainable codebase.

readme.delete.md

@@ -93,7 +93,30 @@ This document tracks all code paths that can be deleted as part of the routing u
   - ✓ Added routeReqLegacy() method for backward compatibility
   - ✓ DELETED: `/ts/routing/router/proxy-router.ts` (437 lines)
   - ✓ DELETED: `/ts/routing/router/route-router.ts` (482 lines)
-- [ ] Phase 4: Utility cleanup
+- [x] Phase 4: Architecture cleanup (COMPLETED)
+  - ✓ Updated route-utils.ts to use unified matchers directly 
+  - ✓ Removed deprecated methods from SharedRouteManager
+  - ✓ Fixed HeaderMatcher.matchMultiple → matchAll method name
+  - ✓ Fixed findMatchingRoute return type handling (IRouteMatchResult)
+  - ✓ Fixed header type conversion for RegExp patterns
+  - ✓ DELETED: Duplicate RouteManager class from http-proxy/models/types.ts (~200 lines)
+  - ✓ Updated all imports to use SharedRouteManager from core/utils
+  - ✓ Fixed PathMatcher exact match behavior (added $ anchor for non-wildcard patterns)
+  - ✓ Updated test expectations to match unified matcher behavior
+  - ✓ All TypeScript errors resolved and build successful
+- [x] Phase 5: Remove all backward compatibility code (COMPLETED)
+  - ✓ Removed routeReqLegacy() method from HttpRouter
+  - ✓ Removed all legacy compatibility methods from HttpRouter (~130 lines)
+  - ✓ Removed LegacyRouterResult interface
+  - ✓ Removed ProxyRouter and RouteRouter aliases
+  - ✓ Updated RequestHandler to remove legacyRouter parameter and legacy routing fallback (~80 lines)
+  - ✓ Updated WebSocketHandler to remove legacyRouter parameter and legacy routing fallback
+  - ✓ Updated HttpProxy to use only unified HttpRouter
+  - ✓ Removed IReverseProxyConfig interface (deprecated legacy interface)
+  - ✓ Removed useExternalPort80Handler deprecated option
+  - ✓ Removed backward compatibility exports from index.ts
+  - ✓ Removed all deprecated functions from route-utils.ts (~50 lines)
+  - ✓ Clean build with no legacy code
 
 ### Files Updated
 1. `ts/core/utils/route-utils.ts` - Replaced all matching logic with unified matchers
@@ -107,6 +130,12 @@ This document tracks all code paths that can be deleted as part of the routing u
 9. `ts/proxies/http-proxy/request-handler.ts` - Updated to use routeReqLegacy()
 10. `ts/proxies/http-proxy/websocket-handler.ts` - Updated to use routeReqLegacy()
 11. `ts/routing/router/index.ts` - Export unified HttpRouter with aliases
+12. `ts/proxies/smart-proxy/utils/route-utils.ts` - Updated to use unified matchers directly
+13. `ts/proxies/http-proxy/request-handler.ts` - Fixed findMatchingRoute usage
+14. `ts/proxies/http-proxy/models/types.ts` - Removed duplicate RouteManager class
+15. `ts/index.ts` - Updated exports to use SharedRouteManager aliases
+16. `ts/proxies/index.ts` - Updated exports to use SharedRouteManager aliases
+17. `test/test.acme-route-creation.ts` - Fixed getAllRoutes → getRoutes method call
 
 ### Files Created
 1. `ts/core/routing/matchers/domain.ts` - Unified domain matcher
@@ -121,10 +150,25 @@ This document tracks all code paths that can be deleted as part of the routing u
 
 ### Lines of Code Removed
 - Target: ~1,500 lines
-- Actual: ~1,672 lines (Target exceeded!)
+- Actual: ~2,332 lines (Target exceeded by 55%!)
   - Phase 1: ~200 lines (matching logic)
   - Phase 2: 553 lines (SmartProxy RouteManager)
   - Phase 3: 919 lines (ProxyRouter + RouteRouter)
+  - Phase 4: ~200 lines (Duplicate RouteManager from http-proxy)
+  - Phase 5: ~460 lines (Legacy compatibility code)
+
+## Unified Routing Architecture Summary
+
+The routing unification effort has successfully:
+1. **Created unified matchers** - Consistent matching logic across all route types
+   - DomainMatcher: Wildcard domain matching with specificity calculation
+   - PathMatcher: Path pattern matching with parameter extraction
+   - IpMatcher: IP address and CIDR notation matching
+   - HeaderMatcher: HTTP header matching with regex support
+2. **Consolidated route managers** - Single SharedRouteManager for all proxies
+3. **Unified routers** - Single HttpRouter for all HTTP routing needs
+4. **Removed ~2,332 lines of code** - Exceeded target by 55%
+5. **Clean modern architecture** - No legacy code, no backward compatibility layers
 
 ## Safety Checklist Before Deletion