feat: prioritize main/master branch selection (#7520)

bootstrap/helpers/shared.php

@@ -301,6 +301,24 @@ function generate_application_name(string $git_repository, string $git_branch, ?
     return Str::kebab("$git_repository:$git_branch-$cuid");
 }
 
+/**
+ * Sort branches by priority: main first, master second, then alphabetically.
+ *
+ * @param  Collection  $branches  Collection of branch objects with 'name' key
+ */
+function sortBranchesByPriority(Collection $branches): Collection
+{
+    return $branches->sortBy(function ($branch) {
+        $name = data_get($branch, 'name');
+
+        return match ($name) {
+            'main' => '0_main',
+            'master' => '1_master',
+            default => '2_'.$name,
+        };
+    })->values();
+}
+
 function base_ip(): string
 {
     if (isDev()) {