mcp.json not able to load; kiro-cli doctor and dashboard not able to run

### 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 6.6.87.2-microsoft-standard-WSL2 - Ubuntu 20.04.6 LTS

### Expected behaviour

I expect the mcp.json in my ~/.kiro/settings get loaded when opening with kiro-cli. It was working but all of the sudden it stopped working and others in my group do not have the issue.

### Actual behaviour

Initial issue is my mcp.json will no longer load when starting kiro-cli. No changes made to it. Works fine from kiro IDE. I tried kiro-cli dashboard and doctor and getting issues on both:

root$ kiro-cli dashboard
error: Launching the dashboard is not supported in minimal mode
root$ kiro-cli doctor

✘ Qterm Socket Check: Failed to validate socket permissions: No such file or directory (os error 2)

Socket path: "/run/user/1000/kirorun/t/63bacaa15a1542e9a32dd23d0e8319a7.sock"

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

### Steps to reproduce

Start a Ubuntu WSL terminal on windows 11 and run kiro-cli. Kiro cli starts but shows this message: "failed to retrieve MCP settings — MCP disabled"

### Environment

```yaml

[q-details]
version = "2.6.1"
hash = "979b991de95e75ddf2318f67c6d196532502cad9"
date = "2026-06-08T21:13:22.883685Z (2d ago)"
variant = "minimal"

[system-info]
chip = "Intel(R) Core(TM) Ultra 7 265U"
total-cores = 7
memory = "15.35 GB"

[system-info.os.linux]
kernel_version = "6.6.87.2-microsoft-standard-WSL2"
id = "ubuntu"
name = "Ubuntu"
pretty_name = "Ubuntu 20.04.6 LTS"
version_id = "20.04"
version = "20.04.6 LTS (Focal Fossa)"

[environment]
cwd = "/root"
cli-path = "/root"
os = "Linux"
shell-path = "/usr/bin/bash"
shell-version = "5.0.17"
install-method = "unknown"
in-wsl = true

[env-vars]
DISPLAY = ":0"
PATH = "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin:/home/USER/.local/bin"
QTERM_SESSION_ID = "63bacaa15a1542e9a32dd23d0e8319a7"
Q_SET_PARENT_CHECK = "1"
Q_TERM = "2.6.1"
SHELL = "/bin/bash"
TERM = "xterm-256color"
XDG_SESSION_TYPE = "tty"
```