Simplify CloudService callbacks

[jr]

This is incremental, but slightly reduces the surface area between the core extension and cloud.

• Remove AuthService callbacks, add user-info event
• Store userInfo on AuthService and fetch it when sessions go active
• Simplify CloudService callbacks to just stateChanged
• Add cloudUserInfo to state and remove authenticatedUser message

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Important

Simplifies CloudService callbacks and updates user info handling across components and state management.

• Behavior:
  • Simplifies CloudService callbacks to only use stateChanged in CloudService.ts.
  • Removes userChanged and settingsChanged callbacks from types.ts.
  • Adds user-info event to AuthServiceEvents in AuthService.ts.
  • Stores userInfo in AuthService and fetches it when sessions activate.
  • Removes authenticatedUser message handling in webviewMessageHandler.ts.
• State Management:
  • Adds cloudUserInfo to ExtensionState in ExtensionMessage.ts and ExtensionStateContext.tsx.
  • Updates ClineProvider.ts to include cloudUserInfo in state management.
• UI Components:
  • Updates App.tsx to use cloudUserInfo for AccountView.
  • Removes userInfo state from App.tsx.
• Tests:
  • Updates tests in CloudService.test.ts and ClineProvider.test.ts to reflect callback changes.
  • Adds tests for cloudUserInfo in ExtensionStateContext.test.tsx.

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[cte]

Nice cleanup - looks great!