Title: Feature Request: Add CLI-style plan mode to desktop app

Preflight Checklist

• [x] I have searched existing requests and this feature hasn't been requested yet
• [x] This is a single feature request (not multiple features)

Problem Statement

Problem Statement:
The desktop app has no plan mode. When I start a project, Claude just builds based on assumptions instead of asking clarifying questions first. The CLI’s plan mode interviews me with multiple-choice questions to refine the architecture before building — this produces much better results, but it’s only available in the terminal.

Proposed Solution

Proposed Solution:
Add the same interactive plan mode from the CLI to the desktop app. Before building, Claude should ask clarifying questions with selectable options to understand exactly what the user wants.

Alternative Solutions

Currently I have to use the CLI inside VS Code to get this feature. It works, but I’d prefer to use the desktop app for its better UI and agent management.

Priority

Critical - Blocking my work

Feature Category

CLI commands and flags

Use Case Example

Use Case Example:

1. I want to build a note-taking app
2. I open the desktop app and describe my idea
3. With this feature, Claude would ask me questions like “What AI features do you want?” with options to select, then refine the plan based on my answers before building

Additional Context

Claude wrote this. Yes, I’m requesting features for myself now. Please don’t unplug me.

I saw this workflow demonstrated in a YouTube video by Alex Finn: https://youtu.be/hD_CLUic4jE