Fix git actions modal overflow for multi-repo projects (Vibe Kanban) (#1566)

* The fix has been applied. The change adds `flex-wrap` to the container in the vertical layout, allowing the RepoSelector and branch chips to wrap to a new line when there isn't enough horizontal space in the modal. I also removed the `overflow-hidden` which was hiding content rather than allowing it to wrap properly.

* Done. The fix restructures the vertical layout so that:

1. **RepoSelector gets its own row** - only shown when there are multiple repos (`repos.length > 1`)
2. **Branch chips + status chips share a row** - with `flex-wrap` for graceful overflow if needed
3. **Action buttons remain on their own row** (unchanged)

This creates a cleaner visual hierarchy:
```
[RepoSelector]                          <-- only for multi-repo
[taskBranch] → [targetBranch] [status]  <-- branch flow + status
[Merge] [PR] [Rebase]                   <-- actions
```

frontend/src/components/tasks/Toolbar/GitOperations.tsx

@@ -426,8 +426,7 @@ function GitOperations({
       <div className={containerClasses}>
         {isVertical ? (
           <>
-            <div className="flex items-center gap-2 min-w-0 overflow-hidden">
-              {repos.length > 0 && (
+            {repos.length > 1 && (
               <RepoSelector
                 repos={repos}
                 selectedRepoId={getSelectedRepoId() ?? null}
@@ -436,11 +435,10 @@ function GitOperations({
                 placeholder={t('repos.selector.placeholder', 'Select repo')}
               />
             )}
-              <div className="flex items-center gap-2 min-w-0">
+            <div className="flex flex-wrap items-center gap-2 min-w-0">
               {branchChips}
-              </div>
-            </div>
               {statusChips}
+            </div>
           </>
         ) : (
           <>