Kiro close after start

### Checks

- [x] I have searched [github.com/aws/amazon-q-developer-cli/issues](https://github.com/aws/amazon-q-developer-cli/issues?q=) and there are no duplicates of my issue
- [x] I have run `q doctor` in the affected terminal session
- [x] I have run `q restart` and replicated the issue again

### Operating system

Linux 5.14.0-611.55.1.el9_7.x86_64 - Rocky Linux 9.7 (Blue Onyx)

### Expected behaviour

Run kiro-cli and enter tui interface

### Actual behaviour

Get back to terminal

### Steps to reproduce

kiro-cli

### Environment

```yaml

[q-details]
version = "2.4.1"
hash = "937fa9a6ff55382dd599408c80bb4b87517146ad"
date = "2026-05-21T03:37:56.378129Z (3d ago)"
variant = "minimal"

[system-info]
chip = "Intel(R) Core(TM) i7-2670QM CPU @ 2.20GHz"
total-cores = 4
memory = "15.31 GB"

[system-info.os.linux]
kernel_version = "5.14.0-611.55.1.el9_7.x86_64"
id = "rocky"
name = "Rocky Linux"
pretty_name = "Rocky Linux 9.7 (Blue Onyx)"
version_id = "9.7"
version = "9.7 (Blue Onyx)"

[environment]
cwd = "/home/USER"
cli-path = "/home/USER"
os = "Linux"
shell-path = "/usr/bin/bash"
shell-version = "5.1.8"
terminal = "Gnome Terminal"
install-method = "unknown"

[env-vars]
DISPLAY = ":0"
PATH = "/home/USER/.local/bin:/home/USER/bin:/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/home/USER/.local/bin"
QTERM_SESSION_ID = "741ae4cce2714656a48c0b3d85a212db"
QT_IM_MODULE = "ibus"
Q_SET_PARENT_CHECK = "1"
Q_TERM = "2.4.1"
SHELL = "/bin/bash"
TERM = "xterm-256color"
XDG_CURRENT_DESKTOP = "GNOME"
XDG_SESSION_DESKTOP = "gnome"
XDG_SESSION_TYPE = "wayland"
XMODIFIERS = "@im=ibus"
```

Inizia riproducendo `kiro-cli` su Rocky Linux 9.7 con la versione 2.4.1, quindi esegui `q doctor` e `q restart` come riportato. Traccia il percorso di avvio della CLI per determinare perché torna al terminale invece di entrare nella TUI; il lavoro è completato quando la TUI si apre correttamente nell’ambiente indicato e la regressione è coperta da un test.

Scritto dal modello di indicizzazione a partire dal testo della issue.