feat(node-player): remove run-without-auth option from login page

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

furumi-node-player/client/src/App.css

@@ -100,24 +100,3 @@
   margin-bottom: 1rem;
 }
 
-.auth-card .settings {
-  margin-top: 1.5rem;
-  padding-top: 1rem;
-  border-top: 1px solid #1f2c45;
-}
-
-.auth-card .toggle {
-  display: flex;
-  align-items: center;
-  justify-content: center;
-  gap: 8px;
-  color: #64748b;
-  font-size: 0.8rem;
-  cursor: pointer;
-}
-
-.auth-card .toggle input {
-  width: 14px;
-  height: 14px;
-  accent-color: #7c6af7;
-}

furumi-node-player/client/src/App.tsx

@@ -9,28 +9,12 @@ type UserProfile = {
   email?: string
 }
 
-const NO_AUTH_STORAGE_KEY = 'furumiNodePlayer.runWithoutAuth'
-
 function App() {
   const [loading, setLoading] = useState(true)
   const [user, setUser] = useState<UserProfile | null>(null)
   const [error, setError] = useState<string | null>(null)
-  const [runWithoutAuth, setRunWithoutAuth] = useState(() => {
-    try {
-      return window.localStorage.getItem(NO_AUTH_STORAGE_KEY) === '1'
-    } catch {
-      return false
-    }
-  })
 
   useEffect(() => {
-    if (runWithoutAuth) {
-      setError(null)
-      setUser({ sub: 'noauth', name: 'No Auth' })
-      setLoading(false)
-      return
-    }
-
     const loadMe = async () => {
       try {
         const response = await fetch('/auth/me', { credentials: 'include' })
@@ -69,10 +53,10 @@ function App() {
     }
 
     void loadMe()
-  }, [runWithoutAuth])
+  }, [])
 
   // Authenticated — render player immediately
-  if (!loading && (user || runWithoutAuth)) {
+  if (!loading && user) {
     return <FurumiPlayer />
   }
 
@@ -101,28 +85,6 @@ function App() {
         <a className="btn-login" href="/auth/login">
           Sign in with SSO
         </a>
-
-        <div className="settings">
-          <label className="toggle">
-            <input
-              type="checkbox"
-              checked={runWithoutAuth}
-              onChange={(e) => {
-                const next = e.target.checked
-                setRunWithoutAuth(next)
-                try {
-                  if (next) window.localStorage.setItem(NO_AUTH_STORAGE_KEY, '1')
-                  else window.localStorage.removeItem(NO_AUTH_STORAGE_KEY)
-                } catch {
-                  // ignore
-                }
-                setLoading(true)
-                setUser(null)
-              }}
-            />
-            <span>Run without authentication</span>
-          </label>
-        </div>
       </section>
     </main>
   )