feat(telemetry): Add telemetry and metrics for model routing (#8518)

packages/cli/src/ui/hooks/useToolScheduler.test.ts

@@ -67,6 +67,7 @@ const mockConfig = {
     authType: 'oauth-personal',
   }),
   getUseSmartEdit: () => false,
+  getUseModelRouter: () => false,
   getGeminiClient: () => null, // No client needed for these tests
   getShellExecutionConfig: () => ({ terminalWidth: 80, terminalHeight: 24 }),
 } as unknown as Config;