[General] I can't find anywhere to indicate the target branch of a worktree/PR.

**Mood:** 😔
**Category:** General

I can't find anywhere to indicate the target branch of a worktree/PR. Even when prompted, the agent/UI is dead set on using the default branch for the PR, showing literally thousands of diffed lines for a fix of only a few. If this is possible in the UI, the location of the setting is too obscure to find. If it isn't, it really should be added for those of us using GitFlow with multiple releases.

---
| Field | Value |
| --- | --- |
| App version | 1.0.2 |
| OS | EndeavourOS Rolling Release |
| Theme | GitHub |
| Path | /chat |
| Tenure | Day 2 (Week 1) |

Start by reproducing the worktree and pull-request flow at the /chat path using the reported app version and repository setup. Identify where the target branch is selected or omitted, then define a UI path for choosing it and verify that the resulting pull request compares against that branch rather than the default branch.

索引モデルが issue の本文から書いたものです。