[BUG] 2.1.268 moved the IDE/selection indicator from the status line into the prompt input; no way to move it back

### Preflight Checklist

- [x] I have searched existing issues and this hasn't been reported yet
- [x] This is a single bug report
- [x] I checked the latest version (2.1.270 changelog): the behavior is unchanged since 2.1.268

### What's Wrong?

Since 2.1.268 the IDE indicator ("PyCharm connected", "N lines selected", the selected file/location) is drawn inside the prompt input area, on the left, instead of in the status/footer line at the bottom right.

The changelog entry for 2.1.268 says: "Improved the prompt footer: an editor or `/diff` selection now shows inside the prompt input".

The new placement takes a big part of the prompt width. In a normal-width terminal the text I type gets squeezed next to the IDE text, and it shifts every time the selection changes. There is no setting, env var, or `/config` toggle to move it back to the footer or hide it.

Because of this I pinned Claude Code to 2.1.267 with the autoupdater off, so I am also missing every fix since then.

### What Should Happen?

One of:

- Keep the IDE/selection info in the footer/status line as in 2.1.267, or
- Add a setting (e.g. in `/config` or `settings.json`) to choose footer vs. prompt input, or to hide it.

### Error Messages/Logs

None. This is a layout change, not an error.

### Steps to Reproduce

1. Install Claude Code 2.1.268 or newer (native install).
2. Open a project in PyCharm with the Claude Code JetBrains plugin, so the IDE is connected.
3. Start `claude` in a terminal (WezTerm here) in the same project.
4. Select a few lines in the PyCharm editor.
5. Look at the prompt area: the IDE/selection text sits inside the prompt input on the left and shrinks the typing area.
6. Run the same steps on 2.1.267: the text is in the bottom status line and the prompt input is full width.

### Claude Model

Not relevant (UI only).

### Is this a regression?

Yes, this worked in a previous version.

### Last Working Version

2.1.267

### Claude Code Version

2.1.268 (also 2.1.269, 2.1.270 by changelog). Pinned back to 2.1.267 (Claude Code).

### Platform

Anthropic API (Claude.ai subscription login)

### Operating System

Ubuntu/Debian Linux (Kubuntu 26.04)

### Terminal/Shell

Other (WezTerm 20260912, bash)

### Additional Information

- Install method: native (`~/.local/share/claude/versions/`), `DISABLE_AUTOUPDATER=1`, `autoUpdates: false`.
- IDE: PyCharm 2026.2 with the Claude Code JetBrains plugin (`ideName: "PyCharm"`, ws transport).
- Not using fullscreen mode. A custom status line command is configured (`statusLine` in settings), which is another reason I want the IDE info to stay on that line and not in the prompt.

Start by reproducing the prompt layout with a PyCharm selection on 2.1.270, then compare it with 2.1.267 and review the 2.1.268 changelog entry. Check the `/config` options and `settings.json`, including the custom `statusLine`; done means the IDE/selection indicator can remain in the footer or be hidden without shrinking the prompt input.

Written by the indexing model from the issue text.