Enhance test infrastructure and add comprehensive WebSocket and security mocking

- Updated test suite with more robust mocking for WebSocket and security modules
- Expanded test coverage for performance monitoring and optimization utilities
- Added detailed type definitions for WebSocket and test response interfaces
- Improved error handling and type safety in test scenarios
- Updated package dependencies to include WebSocket and security-related libraries

coverage/lcov.info

@@ -435,6 +435,107 @@ BRF:22
 BRH:0
 end_of_record
 TN:
+SF:src/security/index.ts
+FN:57,(anonymous_0)
+FN:67,(anonymous_1)
+FN:84,(anonymous_2)
+FN:103,(anonymous_3)
+FN:131,validateRequest
+FN:158,sanitizeInput
+FN:169,errorHandler
+FNF:7
+FNH:0
+FNDA:0,(anonymous_0)
+FNDA:0,(anonymous_1)
+FNDA:0,(anonymous_2)
+FNDA:0,(anonymous_3)
+FNDA:0,validateRequest
+FNDA:0,sanitizeInput
+FNDA:0,errorHandler
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+LF:56
+LH:0
+BRDA:26,0,0,0
+BRDA:26,0,1,0
+BRDA:104,1,0,0
+BRDA:108,2,0,0
+BRDA:118,3,0,0
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+BRDA:159,12,1,0
+BRDA:173,13,0,0
+BRDA:173,13,1,0
+BRF:22
+BRH:0
+end_of_record
+TN:
 SF:src/websocket/client.ts
 FN:13,(anonymous_0)
 FN:27,(anonymous_1)