## Problem
When workflow runs for branches fail due to stuck tasks, they can sit
idle indefinitely. Users are unaware that they need to make a new commit
to retrigger the workflow — leading to confusion, wasted time, and
silent failures going unnoticed.
## Solution
Provide a button that allows users to retrigger a workflow when it is
not being removed.
## How to test
- Create a branch
- Wait for its row to appear on the branch management page
- Click the _View logs_ button
- You should see a _Retrigger_ button
- Clicking it should make a new row appear in those logs
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **New Features**
* Retrigger previously executed workflows directly from branch preview
actions.
* Confirmation dialog added for retrigger actions.
* **Improvements**
* Toast-style error notifications when retriggering fails.
* Workflow run list layout updated for a more flexible horizontal
display.
* After retriggering, workflow and action lists refresh so updates
appear promptly.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Gildas Garcia
375cbcf4a2