## Why

The Ansible `unarchive` module in `roles/trojan/tasks/main.yml` line 23 fails because its `dest: /tmp/trojan-go-extract/` directory does not exist on the remote host. The `unarchive` module requires the destination directory to be present before extraction, but no preceding task creates it. This blocks the entire trojan-go deployment playbook.

## What Changes

- Add a `file` task to create `/tmp/trojan-go-extract/` directory before the unarchive step in `roles/trojan/tasks/main.yml`

## Capabilities

### New Capabilities
<!-- none needed - this is a bug fix -->

### Modified Capabilities
<!-- none -->

## Impact

- `roles/trojan/tasks/main.yml`: one new task inserted before line 23