After updating to version 2.0.0, kiro-cli no longer transitions to chat input.

### 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 6.8.0-106-generic - Ubuntu 24.04.4 LTS

### Expected behaviour

$ kiro-cli
Open Chat window

### Actual behaviour

$ kiro-cli
$

$ kiro-cli chat "hello"
$

### Steps to reproduce

_No response_

### Environment

```yaml
fbtokiwa@Gimlet-Ubn:~$ kiro-cli diagnostic

[q-details]
version = "2.0.0"
hash = "0026b0505ef7bc2b10780c7bdb57813e5d949747"
date = "2026-04-13T09:03:52.798806Z (2d ago)"
variant = "minimal"

[system-info]
chip = "Intel(R) Core(TM) i7-14700K"
total-cores = 4
memory = "15.62 GB"

[system-info.os.linux]
kernel_version = "6.8.0-106-generic"
id = "ubuntu"
name = "Ubuntu"
pretty_name = "Ubuntu 24.04.4 LTS"
version_id = "24.04"
version = "24.04.4 LTS (Noble Numbat)"

[environment]
cwd = "/home/USER"
cli-path = "/home/USER"
os = "Linux"
shell-path = "/usr/bin/bash"
install-method = "unknown"
in-ssh = true

[env-vars]
DISPLAY = ":0.0"
PATH = "Cannot be published"
Q_SET_PARENT_CHECK = "1"
SHELL = "/bin/bash"
TERM = "xterm"
XDG_SESSION_TYPE = "tty"
```

Beginne damit, das Verhalten mit `kiro-cli` und `kiro-cli chat "hello"` in der gemeldeten Umgebung Ubuntu 24.04.4 LTS zu reproduzieren, und vergleiche es anschließend mit dem erwarteten Übergang zur Chat-Eingabe. Verwende während der Untersuchung `q doctor`, `q restart` und `kiro-cli diagnostic`; abgeschlossen ist die Untersuchung, wenn beide Befehle wie erwartet die Chat-Eingabe öffnen oder zu ihr wechseln.

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