feat: comprehensive fixes for 16 issues (security, performance, architecture, code quality)

[korsan34]

Summary

This PR addresses 16 issues identified during comprehensive codebase analysis:

Critical (3)

1. Missing CreateSceneResource - Added on both Unity (C#) and Node (TypeScript) sides
2. Missing GetSceneInfoResource - Added on both Unity (C#) and Node (TypeScript) sides
3. Error response format mismatch - Standardized to include success: false, message, and error object for Node compatibility

High (6)

4. GetServerPath returns error string - Now returns null on failure (prevents silent bugs)
5. RunNpmCommand shell injection - Added EscapeForCmd() / EscapeForShell() helpers
6. ConsoleLogsService reflection fragility - Cached reflection + retry logic + graceful fallback
7. Port race condition - Node now retries settings file for 30s with 1s intervals
8. CommandQueue 100 limit - Increased to 1000 + 80% capacity warning
9. Logger sync I/O blocking - Async queue with setImmediate for non-blocking file writes

Medium (4)

10. GameObjectTools DRY violation - Extracted validateGameObjectIdentifier() helper
11. GetGameObjectResource list TODO - Implemented with 5s TTL cache
12. TypeScript any usage - Added z.infer<typeof paramsSchema> types (createSceneTool example)
13. Version mismatch - Synced to 1.4.0 (Unity + Node)

Low (3)

14. BatchExecute atomic limitation - Documented Unity Editor-only behavior
15. TestRunnerService callback leak - Added IDisposable + Dispose() + finalizer
16. McpBackgroundTick static state - Added ResetForTesting() for test isolation

Verification

• Tests: 123/123 passed (12 suites)
• Build: TypeScript compilation successful
• No breaking changes - All fixes are backward compatible

Files Changed (18)

• Editor/UnityBridge/McpUnitySettings.cs
• Editor/UnityBridge/McpUnitySocketHandler.cs
• Editor/Services/ConsoleLogsService.cs
• Editor/Services/TestRunnerService.cs
• Editor/Tools/BatchExecuteTool.cs
• Editor/Utils/McpBackgroundTick.cs
• Editor/Utils/McpUtils.cs
• Editor/Resources/CreateSceneResource.cs (new)
• Editor/Resources/GetSceneInfoResource.cs (new)
• Server~/src/resources/createSceneResource.ts (new)
• Server~/src/resources/getSceneInfoResource.ts (new)
• Server~/src/resources/getGameObjectResource.ts
• Server~/src/tools/createSceneTool.ts
• Server~/src/tools/gameObjectTools.ts
• Server~/src/unity/commandQueue.ts
• Server~/src/unity/unityConnectionConfig.ts
• Server~/src/utils/logger.ts
• Server~/src/tests/commandQueue.test.ts
• Server~/src/tests/unityConnectionConfig.test.ts