[Feature]: Name the worktree (with AI) before creating it

[tyteen4a03]

Before submitting

• I searched existing issues and did not find a duplicate.
• I am describing a concrete problem or use case, not just a vague idea.

Area

apps/web

Problem or use case

Right now, T3 code defaults all worktrees to have the format t3code/<sha>. While this is fine within T3 code, I use an external Git client to manage worktrees and have difficulty linking threads to their worktrees.

Proposed solution

Provide an option to name the worktree manually or with AI, before creating it.

Why this matters

This will make worktrees more identifiable for other clients.

Smallest useful scope

Provide an option to name the worktree manually, before creating it.

Alternatives considered

No response

Risks or tradeoffs

No response

Examples or references

No response

Contribution

• I would be open to helping implement this.