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## Summary Refactored the `AgentChatMessageUIToolCallPart` output structure to flatten the nested result object, simplifying the data model and improving code clarity. ## Key Changes - **Flattened output structure**: Moved `success`, `message`, and `result` fields from `output.result` directly to `output`, eliminating unnecessary nesting - **Removed `toolName` field**: Deleted the unused `toolName` property from the output object - **Made fields optional**: Changed `error` and `result` to optional fields to better represent cases where they may not be present - **Updated hook logic**: Modified `useProcessUIToolCallMessage` to access the flattened structure: - Changed `toolExecutionPart.output.result.success` to `toolExecutionPart.output.success` - Changed `toolExecutionPart.output.result.result` to `toolExecutionPart.output.result` - Added null check for `navigateAppOutput` to handle cases where result is undefined ## Implementation Details The refactoring maintains backward compatibility in functionality while simplifying the data structure. The optional `result` field now properly reflects that navigation output may not always be present, with an explicit guard clause added to handle this case gracefully. https://claude.ai/code/session_01EnYKwVaCJyhgNPsi7p3YSq Co-authored-by: Claude <noreply@anthropic.com>