Refactor: Remove Copilot tools and related utilities

- Deleted RunCommandTool, SearchWorkspaceTool, WriteFileTool, and their associated interfaces and implementations.
- Removed Tool, ToolRegistry, and AgentLogger classes, along with their dependencies.
- Eliminated utility functions for workspace path management and secret sanitization.
- Cleaned up TypeScript configuration and example environment variables related to Copilot.
- Updated Docker Compose files to remove references to Copilot services.

.vscode/launch.json

@@ -19,20 +19,6 @@
         }
     ],
     "configurations": [
-        {
-            "address": "127.0.0.1",
-            "localRoot": "${workspaceFolder}/TestServer",
-            "name": "Copilot: Debug with Docker",
-            "port": 9985,
-            "remoteRoot": "/usr/src/app",
-            "request": "attach",
-            "skipFiles": [
-                "<node_internals>/**"
-            ],
-            "type": "node",
-            "restart": true,
-            "autoAttachChildProcesses": true
-        },
         {
             "name": "Debug Infrastructure Agent",
             "type": "go",