q update failure

### 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 15.7.0 (24G222)

### Expected behaviour

q update success

### Actual behaviour

➜ ~ q update
██████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████ 100/100Failed to swap files: failed to update: `Failed to swap app bundle due to permission denied. Try restarting the app.`
██████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████ 100/100error: failed to update: ``

If this is unexpected, try running q doctor and then try again.

➜ ~ q doctor

✘ Amazon Q terminal integrations: This terminal is not running with the latest integration, please restart your terminal

Q_TERM=1.17.1

✘ Doctor found errors. Please fix them and try again.

If you are not sure how to fix it, please open an issue with q issue to let us know!

### Steps to reproduce

run "q update" in iterm2 with macos

### Environment

```yaml

[q-details]
version = "1.12.4"
hash = "c20df6ad252618bed22508b33914316ea204af26"
date = "2025-07-09T01:16:37.713672Z (90d ago)"
variant = "full"

[system-info]
os = "macOS 15.7.0 (24G222)"
chip = "Apple M3 Pro"
total-cores = 12
memory = "36.00 GB"

[environment]
cwd = "/Users/USER"
cli-path = "/Users/USER"
os = "Mac"
shell-path = "/Users/USER/.toolbox/tools/toolbox/1.1.2210.0/toolbox-exec"
shell-version = "5.9"
terminal = "iTerm 2"
install-method = "toolbox"

[env-vars]
PATH = "/opt/homebrew/opt/ruby/bin:/Users/USER/.toolbox/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/Library/Application Support/JetBrains/Toolbox/scripts"
QTERM_SESSION_ID = "7ab5cac11d024aa8b641a1319978ffe3"
Q_SET_PARENT_CHECK = "1"
Q_TERM = "1.17.1"
SHELL = "/bin/zsh"
TERM = "xterm-256color"
__CFBundleIdentifier = "com.googlecode.iterm2"
```

Start by reproducing q update on macOS 15.7 in iTerm2 and compare the q doctor output, especially the terminal integration warning. Investigate the updater path responsible for swapping the app bundle; done means q update completes without the permission-denied error and q doctor reports no related error.

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