Amazon Q is having trouble responding right now

### 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

macOS 15.5.0 (24F74)

### Expected behaviour

Amazon Q is having trouble responding right now:
0: The model you've selected is temporarily unavailable. Please use '/model' to select a different model and try again.
Request ID: aef4be95-bd62-480c-9060-5bac30cd0aab

0:

Location:
crates/chat-cli/src/cli/chat/mod.rs:787

Backtrace omitted. Run with RUST_BACKTRACE=1 environment variable to display it.
Run with RUST_BACKTRACE=full to include source snippets.

### Actual behaviour

When I use q chat , select model claude-4-sonnet but it's not work now

### Steps to reproduce

$ q chat
> /model
(select claude-4-sonnet model)
> can you do something for me

### Environment

```yaml

[q-details]
version = "1.12.5"
hash = "09124c0c588530efdbde310b5110c8603c42eae3"
date = "2025-07-14T19:33:57.417511Z (2d ago)"
variant = "full"

[system-info]
os = "macOS 15.5.0 (24F74)"
chip = "Apple M2"
total-cores = 8
memory = "16.00 GB"

[environment]
cwd = "/Users/USER/Documents/AI/aws/develop/cpai_ops"
cli-path = "/Users/USER/Documents/AI/aws/develop/cpai_ops"
os = "Mac"
shell-path = "/bin/zsh"
shell-version = "5.9"
terminal = "iTerm 2"
install-method = "unknown"

[env-vars]
PATH = "/Users/USER/.nvm/versions/node/v22.16.0/bin:/Users/USER/Documents/java/apache-maven-3.9.0/bin:/library/Java/JavaVirtualMachines/graalvm-22.jdk/Contents/Home/bin:/opt/homebrew/opt/postgresql@14/bin:/Users/USER/.rvm/gems/ruby-3.2.2/bin:/Users/USER/.rvm/gems/ruby-3.2.2@global/bin:/Users/USER/.rvm/rubies/ruby-3.2.2/bin:/opt/homebrew/anaconda3/bin:/opt/homebrew/anaconda3/condabin:/Users/USER/Documents/java/apache-maven-3.9.0/bin:/Users/USER/Library/Python/3.9/bin:/opt/homebrew/bin:/opt/homebrew/sbin:/Applications/Yunshu.app/Contents/Public:/usr/local/bin:/System/Cryptexes/App/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/local/bin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/bin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/appleinternal/bin:/Library/Apple/usr/bin:/usr/local/go/bin:/Applications/iTerm.app/Contents/Resources/utilities:/Users/USER/.local/bin:/Users/USER/.rvm/bin:/Users/USER/.modular/bin:/Users/USER/.lmstudio/bin"
QTERM_SESSION_ID = "2145387a063b421c9178976fcc7514af"
Q_SET_PARENT_CHECK = "1"
Q_TERM = "1.12.5"
SHELL = "/bin/zsh"
TERM = "xterm-256color"
__CFBundleIdentifier = "com.googlecode.iterm2"
```