## 1. Server detail deployment action

- [x] 1.1 Add an explicit Deploy / Retry deploy handler that invokes the existing fenced API with current config version and operation feedback.
- [x] 1.2 Render the action only for deployable draft or failed instances and prevent duplicate submission while pending.

## 2. Verification

- [x] 2.1 Extend focused server-detail tests to cover the deploy trigger and its state guards.
- [x] 2.2 Run frontend tests, the structure check, and strict OpenSpec validation.