feat(validation): make hostname validation case-insensitive and expand allowed characters

- Normalize hostnames to lowercase for RFC 1123 compliance while accepting uppercase input
- Expand NAME_PATTERN to allow parentheses, hash, comma, colon, and plus characters
- Add fallback to random name generation when application name doesn't meet minimum requirements
- Add comprehensive test coverage for validation patterns and edge cases

bootstrap/helpers/shared.php

@@ -341,7 +341,16 @@ function generate_application_name(string $git_repository, string $git_branch, ?
 
     $repo_name = str_contains($git_repository, '/') ? last(explode('/', $git_repository)) : $git_repository;
 
-    return Str::kebab("$repo_name:$git_branch-$cuid");
+    $name = Str::kebab("$repo_name:$git_branch-$cuid");
+
+    // Strip characters not allowed by NAME_PATTERN
+    $name = preg_replace('/[^\p{L}\p{M}\p{N}\s\-_.@\/&()#,:+]+/u', '', $name);
+
+    if (empty($name) || mb_strlen($name) < 3) {
+        return generate_random_name($cuid);
+    }
+
+    return $name;
 }
 
 /**