Refactor: Zentralisiertes Admin-Login im Top-Menü

- Admin-Login aus 3 Plugins (Soundboard, Streaming, Game Library) entfernt
- Zentraler 🔒/🔓 Button im Header mit Login-Modal
- isAdmin wird als Prop an alle Plugins weitergegeben
- Settings-Buttons (Gear-Icons) nur sichtbar wenn eingeloggt
- Alle Plugins nutzen weiterhin den shared admin-Cookie für Operationen
- Login/Logout-Formulare und Buttons aus Plugin-Panels entfernt

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

web/src/plugins/soundboard/SoundboardTab.tsx

@@ -186,25 +186,6 @@ async function apiGetVolume(guildId: string): Promise<number> {
   return typeof data?.volume === 'number' ? data.volume : 1;
 }
 
-async function apiAdminStatus(): Promise<boolean> {
-  const res = await fetch(`${API_BASE}/admin/status`, { credentials: 'include' });
-  if (!res.ok) return false;
-  const data = await res.json();
-  return !!data?.authenticated;
-}
-
-async function apiAdminLogin(password: string): Promise<boolean> {
-  const res = await fetch(`${API_BASE}/admin/login`, {
-    method: 'POST', headers: { 'Content-Type': 'application/json' }, credentials: 'include',
-    body: JSON.stringify({ password })
-  });
-  return res.ok;
-}
-
-async function apiAdminLogout(): Promise<void> {
-  await fetch(`${API_BASE}/admin/logout`, { method: 'POST', credentials: 'include' });
-}
-
 async function apiAdminDelete(paths: string[]): Promise<void> {
   const res = await fetch(`${API_BASE}/admin/sounds/delete`, {
     method: 'POST', headers: { 'Content-Type': 'application/json' }, credentials: 'include',
@@ -324,13 +305,14 @@ interface VoiceStats {
 
 interface SoundboardTabProps {
   data: any;
+  isAdmin?: boolean;
 }
 
 /* ══════════════════════════════════════════════════════════════════
    COMPONENT
    ══════════════════════════════════════════════════════════════════ */
 
-export default function SoundboardTab({ data }: SoundboardTabProps) {
+export default function SoundboardTab({ data, isAdmin: isAdminProp }: SoundboardTabProps) {
   /* ── Data ── */
   const [sounds, setSounds] = useState<Sound[]>([]);
   const [total, setTotal] = useState(0);
@@ -378,9 +360,8 @@ export default function SoundboardTab({ data }: SoundboardTabProps) {
   const volDebounceRef = useRef<ReturnType<typeof setTimeout>>(undefined);
 
   /* ── Admin ── */
-  const [isAdmin, setIsAdmin] = useState(false);
+  const isAdmin = isAdminProp ?? false;
   const [showAdmin, setShowAdmin] = useState(false);
-  const [adminPwd, setAdminPwd] = useState('');
   const [adminSounds, setAdminSounds] = useState<Sound[]>([]);
   const [adminLoading, setAdminLoading] = useState(false);
   const [adminQuery, setAdminQuery] = useState('');
@@ -521,7 +502,6 @@ export default function SoundboardTab({ data }: SoundboardTabProps) {
           setSelected(match ? `${g}:${serverCid}` : `${ch[0].guildId}:${ch[0].channelId}`);
         }
       } catch (e: any) { notify(e?.message || 'Channel-Fehler', 'error'); }
-      try { setIsAdmin(await apiAdminStatus()); } catch { }
       try { const c = await fetchCategories(); setCategories(c.categories || []); } catch { }
     })();
   // eslint-disable-next-line react-hooks/exhaustive-deps
@@ -879,28 +859,6 @@ export default function SoundboardTab({ data }: SoundboardTabProps) {
     }
   }
 
-  async function handleAdminLogin() {
-    try {
-      const ok = await apiAdminLogin(adminPwd);
-      if (ok) {
-        setIsAdmin(true);
-        setAdminPwd('');
-        notify('Admin eingeloggt');
-      }
-      else notify('Falsches Passwort', 'error');
-    } catch { notify('Login fehlgeschlagen', 'error'); }
-  }
-
-  async function handleAdminLogout() {
-    try {
-      await apiAdminLogout();
-      setIsAdmin(false);
-      setAdminSelection({});
-      cancelRename();
-      notify('Ausgeloggt');
-    } catch { }
-  }
-
   /* ── Computed ── */
   const displaySounds = useMemo(() => {
     if (activeTab === 'favorites') return sounds.filter(s => favs[s.relativePath ?? s.fileName]);
@@ -1040,13 +998,15 @@ export default function SoundboardTab({ data }: SoundboardTabProps) {
               )}
             </div>
           )}
-          <button
-            className={`admin-btn-icon ${isAdmin ? 'active' : ''}`}
-            onClick={() => setShowAdmin(true)}
-            title="Admin"
-          >
-            <span className="material-icons">settings</span>
-          </button>
+          {isAdmin && (
+            <button
+              className="admin-btn-icon active"
+              onClick={() => setShowAdmin(true)}
+              title="Admin"
+            >
+              <span className="material-icons">settings</span>
+            </button>
+          )}
         </div>
       </header>
 
@@ -1447,21 +1407,6 @@ export default function SoundboardTab({ data }: SoundboardTabProps) {
                 <span className="material-icons" style={{ fontSize: 18 }}>close</span>
               </button>
             </h3>
-            {!isAdmin ? (
-              <div>
-                <div className="admin-field">
-                  <label>Passwort</label>
-                  <input
-                    type="password"
-                    value={adminPwd}
-                    onChange={e => setAdminPwd(e.target.value)}
-                    onKeyDown={e => e.key === 'Enter' && handleAdminLogin()}
-                    placeholder="Admin-Passwort..."
-                  />
-                </div>
-                <button className="admin-btn-action primary" onClick={handleAdminLogin}>Login</button>
-              </div>
-            ) : (
               <div className="admin-shell">
                 <div className="admin-header-row">
                   <p className="admin-status">Eingeloggt als Admin</p>
@@ -1473,7 +1418,6 @@ export default function SoundboardTab({ data }: SoundboardTabProps) {
                     >
                       Aktualisieren
                     </button>
-                    <button className="admin-btn-action outline" onClick={handleAdminLogout}>Logout</button>
                   </div>
                 </div>
 
@@ -1585,7 +1529,6 @@ export default function SoundboardTab({ data }: SoundboardTabProps) {
                   )}
                 </div>
               </div>
-            )}
           </div>
         </div>
       )}