crash q

### 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

i queired with below prompt
> eventbridge 에서 매시간 5~10, 30~40분 사이 시작되는 이벤트 목록을 알려줘.

### Actual behaviour

The application panicked (crashed).
Message: byte index 133333 is not a char boundary; it is inside '면' (bytes 133332..133335) of `{
"Rules": [
{
"Name": "AutoScalingManagedRule",
"Arn": "arn:aws:events:ap-northeast-2:971334356194:rule/AutoScalingManagedRule",
"EventPattern": "{\"source\":[\"aws.ec2\"],\"detail-type\":[\"EC2 Instance Reb`[...]

### Steps to reproduce

_No response_

### Environment

```yaml

[q-details]
version = "1.12.7"
hash = "ed77799a52644ba49a3ed76b15c25cd9334c4b8d"
date = "2025-07-22T17:41:04.597455Z (1d ago)"
variant = "full"

[system-info]
os = "macOS 15.5.0 (24F74)"
chip = "Apple M1 Pro"
total-cores = 10
memory = "32.00 GB"

[environment]
cwd = "/Users/USER/oy_awstools"
cli-path = "/Users/USER/oy_awstools"
os = "Mac"
shell-path = "/bin/zsh"
shell-version = "5.9"
terminal = "iTerm 2"
install-method = "brew"

[env-vars]
PATH = "/opt/homebrew/bin:/Users/USER/.nvm/versions/node/v20.9.0/bin:/opt/homebrew/opt/openjdk@11/bin:/opt/homebrew/bin:/opt/homebrew/bin:/opt/homebrew/sbin:/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:/Applications/iTerm.app/Contents/Resources/utilities:/Users/USER/.local/bin:/Users/USER/.lmstudio/bin"
QTERM_SESSION_ID = "1b08a48fc5a74566ba142a0974898625"
Q_SET_PARENT_CHECK = "1"
Q_TERM = "1.12.7"
SHELL = "/bin/zsh"
TERM = "xterm-256color"
__CFBundleIdentifier = "com.googlecode.iterm2"
```