fix: improve error handling in admin pages to show user-friendly error messages

- Add error display to help questions new/edit pages
- Improve error visibility in admin-badges, admin-applications, admin-logs, admin-users pages
- Update createHelpQuestion action to properly handle and display unique name collisions and database errors
- Add user-friendly error messages to admin error handling
- Enhances admin page error reporting for better user experience

src/components/navbar-color-picker.tsx

@@ -70,12 +70,13 @@ export function NavbarColorPicker() {
         </svg>
       </button>
 
-      {mounted && open && (
-        <div
-          className="glass-dropdown absolute right-0 top-full mt-0.5 min-w-[200px] rounded-xl z-50 py-3 px-2"
-        >
-          <div className="text-xs font-semibold uppercase tracking-wider mb-2 px-2" style={{ color: "var(--color-text-muted)" }}>Navbar kleur</div>
-          <div className="grid grid-cols-5 gap-1.5">
+       {mounted && open && (
+         <div
+           className="dropdown-menu absolute right-0 top-full mt-0.5 min-w-[200px] rounded-xl z-50 py-3 px-2"
+         >
+           <div className="text-xs font-semibold uppercase tracking-wider mb-2 px-2" style={{ color: "var(--color-text-muted)" }}>Navbar kleur</div>
+           <div className="grid grid-cols-5 gap-1.5">
+
             {COLORS.map((c, i) => (
               <button
                 key={c.name}