Enhance dashboard guild access with owner bypass functionality

- Introduced `resolveDashboardGuild` to handle guild resolution for both managed and owner-panel bypass scenarios.
- Updated `GuildLayout` and `WelcomePage` components to utilize the new guild resolution logic, improving access handling.
- Enhanced `DashboardShell` to display an informational banner for users accessing guilds via the owner-panel bypass.
- Added localization support for owner bypass messages in English and German.
- Updated authentication logic to allow owner-panel users to access guilds without Discord Manage Guild permission.

apps/webui/src/lib/owner-auth.ts

@@ -31,6 +31,14 @@ export async function isOwnerUser(userId: string): Promise<boolean> {
   return (await resolveOwnerRole(userId)) !== null;
 }
 
+/**
+ * Owner-panel team members (any role) may open every guild where the bot is
+ * installed — for support without needing Manage Guild on Discord.
+ */
+export async function hasOwnerGuildBypass(userId: string): Promise<boolean> {
+  return (await resolveOwnerRole(userId)) !== null;
+}
+
 export async function requireOwner(minimum: OwnerRole = 'VIEWER'): Promise<OwnerSession> {
   const session = await requireAuth();
   const role = await resolveOwnerRole(session.user.id);