Tool execution completely broken on Arch Linux WSL — tools emitted as text instead of executed

### 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 - Arch Linux

### Expected behaviour

Kiro should execute tool calls normally when running in Arch Linux under WSL2.

Commands like:
- execute_command
- read_file
- write_file

should invoke the actual tool runtime and return real filesystem/shell results.

For example, when prompted:
"Read proof.txt and reply with only its contents."

Kiro should actually read the file from the current working directory and return the file contents.

### Actual behaviour

Kiro does not execute any tools.

Instead, it emits blocks as plain text and appears to hallucinate filesystem results.

Example:

{"name": "read_file", "arguments": {"file_path": "/home/kloss/proof.txt"}}

The file /home/kloss/proof.txt doesn't exist.

The tool was never actually executed.

The assistant also incorrectly checks paths that do not match the current working directory.

This affects:
- execute_command
- read_file
- write_file

and likely all tool execution.

### Steps to reproduce

1. Run Arch Linux under WSL2
2. Install Kiro CLI
3. Run:
kiro-cli doctor

Doctor reports:
"Everything looks good!"

4. Enable inline mode:
kiro-cli inline enable

5. Create a test directory:
mkdir -p /tmp/kiro-proof
cd /tmp/kiro-proof
echo "UNIQUE_KIRO_TEST_93817" > proof.txt

6. Start Kiro:
kiro-cli chat --trust-all-tools

7. Prompt:
Read proof.txt and reply with only its contents.

8. Observe that Kiro outputs fake blocks instead of executing tools.

### Environment

```yaml

[q-details]
version = "2.4.1"
hash = "937fa9a6ff55382dd599408c80bb4b87517146ad"
date = "2026-05-21T03:37:56.378129Z (5d ago)"
variant = "minimal"

OS: Arch Linux (WSL2)
Shell: [your shell here, e.g. zsh/bash/fish]
WSL version: WSL2
Inline mode: enabled
Issue reproducible: always

This appears to be a tool runtime/bridge failure where the model falls back to simulated tool-call output instead of actual execution.
[system-info]
chip = "12th Gen Intel(R) Core(TM) i5-1235U"
total-cores = 6
memory = "7.60 GB"

[system-info.os.linux]
kernel_version = "6.6.87.2-microsoft-standard-WSL2"
id = "arch"
name = "Arch Linux"
pretty_name = "Arch Linux"
build_id = "rolling"

[environment]
cwd = "/tmp/kiro-proof"
cli-path = "/tmp/kiro-proof"
os = "Linux"
shell-path = "/usr/bin/zsh"
shell-version = "5.9"
install-method = "unknown"
in-wsl = true

[env-vars]
DISPLAY = ":0"
PATH = "/home/USER/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/usr/lib/wsl/lib:/mnt/c/WINDOWS/system32:/mnt/c/WINDOWS:/mnt/c/WINDOWS/System32/Wbem:/mnt/c/WINDOWS/System32/WindowsPowerShell/v1.0/:/mnt/c/WINDOWS/System32/OpenSSH/:/mnt/c/Users/gkloss/AppData/Local/Programs/Python/Launcher/:/mnt/c/Users/gkloss/AppData/Local/Microsoft/WindowsApps:/mnt/c/Users/gkloss/AppData/Local/Programs/Microsoft VS Code/bin:/mnt/c/Users/gkloss/AppData/Local/Programs/Kiro/bin:/usr/bin/site_perl:/usr/bin/vendor_perl:/usr/bin/core_perl:/home/USER/.local/bin"
QTERM_SESSION_ID = "30b8d900fdeb4c1c994dd68532f75155"
Q_SET_PARENT_CHECK = "1"
Q_TERM = "2.4.1"
SHELL = "/usr/bin/zsh"
TERM = "xterm-256color"
```