feat: store node logo/favicon in postgres instead of S3

- Add logoData and faviconData columns to nodes table
- Create /api/admin/node/upload endpoint for direct DB storage
- Create /api/node/logo and /api/node/favicon endpoints to serve images
- Update admin page to use new upload endpoint
- Remove dependency on admin's personal S3 storage for node assets

src/components/Sidebar.tsx

@@ -7,11 +7,11 @@ import { usePathname, useRouter } from 'next/navigation';
 import { useAuth } from '@/lib/contexts/AuthContext';
 import { HomeIcon, SearchIcon, BellIcon, UserIcon, ShieldIcon, SettingsIcon, BotIcon } from './Icons';
 import { formatFullHandle } from '@/lib/utils/handle';
-import { LogOut, Settings2, Unlock } from 'lucide-react';
+import { LogOut, Settings2 } from 'lucide-react';
 // import { IdentityUnlockPrompt } from './IdentityUnlockPrompt'; // Moved to LayoutWrapper
 
 export function Sidebar() {
-    const { user, isAdmin, logout, isIdentityUnlocked, lockIdentity } = useAuth();
+    const { user, isAdmin, logout } = useAuth();
     const pathname = usePathname();
     const router = useRouter();
     const [customLogoUrl, setCustomLogoUrl] = useState<string | null | undefined>(undefined);
@@ -192,55 +192,6 @@ export function Sidebar() {
                         </div>
                     </div>
 
-                    {/* Identity Status - Only show when unlocked with option to lock */}
-                    {isIdentityUnlocked && (
-                        <div
-                            onClick={() => lockIdentity()}
-                            title="Click to lock your identity"
-                            style={{
-                                display: 'flex',
-                                alignItems: 'center',
-                                gap: '8px',
-                                padding: '10px 12px',
-                                marginBottom: '12px',
-                                borderRadius: '8px',
-                                background: 'rgba(34, 197, 94, 0.1)',
-                                border: '1px solid rgba(34, 197, 94, 0.2)',
-                                cursor: 'pointer',
-                                transition: 'all 0.2s',
-                            }}
-                            onMouseEnter={(e) => {
-                                e.currentTarget.style.background = 'rgba(34, 197, 94, 0.15)';
-                            }}
-                            onMouseLeave={(e) => {
-                                e.currentTarget.style.background = 'rgba(34, 197, 94, 0.1)';
-                            }}
-                        >
-                            <Unlock size={16} style={{ color: 'rgb(34, 197, 94)', flexShrink: 0 }} />
-                            <div style={{ flex: 1, minWidth: 0 }}>
-                                <div style={{
-                                    fontSize: '13px',
-                                    fontWeight: 500,
-                                    color: 'rgb(34, 197, 94)',
-                                    overflow: 'hidden',
-                                    textOverflow: 'ellipsis',
-                                    whiteSpace: 'nowrap'
-                                }}>
-                                    Identity Unlocked
-                                </div>
-                                <div style={{
-                                    fontSize: '11px',
-                                    color: 'var(--foreground-tertiary)',
-                                    overflow: 'hidden',
-                                    textOverflow: 'ellipsis',
-                                    whiteSpace: 'nowrap'
-                                }}>
-                                    Click to lock
-                                </div>
-                            </div>
-                        </div>
-                    )}
-
                     <button
                         onClick={handleLogout}
                         disabled={loggingOut}