Add unit tests for CLI modules and fix ESLint issues

- Add comprehensive unit tests for all CLI-related modules:
  - CliContextManager
  - CliVersionManager
  - cliDetector
  - CliInstaller
- Fix ESLint issues by replacing @ts-ignore with @ts-expect-error
- Fix any type issues in test files
- Add tests for diff-manager functionality
- Improve loading messages random selection stability

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

packages/vscode-ide-companion/src/acp/acpSessionManager.ts

@@ -10,12 +10,12 @@
  * Responsible for managing ACP protocol session operations, including initialization, authentication, session creation, and switching
  */
 
-import { JSONRPC_VERSION } from '../shared/acpTypes.js';
+import { JSONRPC_VERSION } from '../constants/acpTypes.js';
 import type {
   AcpRequest,
   AcpNotification,
   AcpResponse,
-} from '../shared/acpTypes.js';
+} from '../constants/acpTypes.js';
 import { AGENT_METHODS, CUSTOM_METHODS } from './schema.js';
 import type { PendingRequest } from './connectionTypes.js';
 import type { ChildProcess } from 'child_process';