You are given an existing mobile codebase and asked to implement a ChatGPT-style chat screen in about 40 minutes. Describe how you would read the project, choose between SwiftUI and UIKit if both are possible, build the UI, handle errors, and decide what to prioritize if login, networking, and polish cannot all fit. <details> <summary>Hint 1</summary> Start by naming the core entities, constraints, and success criteria. </details> <details> <summary>Hint 2</summary> Make the trade-offs explicit before going deep on implementation details. </details> ### Constraints & Assumptions - The codebase is unfamiliar. - A simple chat UI must compile and run by the end. - The interviewer values communication and prioritization. - Networking and login may be partially stubbed depending on time. ### Clarifying Questions to Ask - Which UI framework does the existing project already use? - Is there an existing API client or auth layer? - Is visual fidelity more important than end-to-end networking? - What minimum demo must work at the end? - Are tests expected during the interview? ### What a Strong Answer Covers ```premium-lock What a Strong Answer Covers ``` ### Follow-up Questions - What would you do if the API client is broken? - How would you add streaming later? - How would you test the view model? - What accessibility details would you add with more time?