Add project reports section and fix mobile overflow issues

- Add project-wide reporting table with scope selector (all rounds / per round)
- Fix horizontal overflow on mobile (body, admin sidebar, logo truncation)
- Make members header and reports tabs responsive with flex-wrap

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/components/layouts/admin-sidebar.tsx

@@ -167,8 +167,8 @@ export function AdminSidebar({ user }: AdminSidebarProps) {
   return (
     <>
       {/* Mobile menu button */}
-      <div className="fixed top-0 left-0 right-0 z-40 flex h-16 items-center justify-between border-b bg-card px-4 lg:hidden">
-        <Logo showText textSuffix="Admin" />
+      <div className="fixed top-0 left-0 right-0 z-40 flex h-16 items-center justify-between border-b bg-card px-4 lg:hidden overflow-x-hidden">
+        <Logo showText textSuffix="Admin" className="min-w-0" />
         <div className="flex items-center gap-2">
           <NotificationBell />
           <Button