feat: add feature/bun-executable to branch selector

Add feature/bun-executable to the allowed branches list in the Version Channel selector, enabling users to switch to this branch from the settings UI.

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Co-Authored-By: Alex Newman <thedotmack@users.noreply.github.com>

src/services/worker/http/routes/SettingsRoutes.ts

@@ -211,7 +211,7 @@ export class SettingsRoutes extends BaseRouteHandler {
     }
 
     // Validate branch name
-    const allowedBranches = ['main', 'beta/7.0'];
+    const allowedBranches = ['main', 'beta/7.0', 'feature/bun-executable'];
     if (!allowedBranches.includes(branch)) {
       res.status(400).json({
         success: false,