feat: Introduce Nucleo as the main AI agent identity

- Add Nucleo atom logo with animated orbiting electrons
- Redesign FAB with glassmorphism effect and purple gradient
- Add connection indicator (green dot) when terminal is open
- Update FloatingTerminal header with Nucleo branding
- Add PermissionRequest hook support with red alert animation
- Document Nucleo in README with visual states table
- Create official Nucleo logo SVG in docs/

server/services/terminal.ts

@@ -214,7 +214,7 @@ export function startTerminalServer() {
 }
 
 // Claude status types
-type ClaudeStatus = 'idle' | 'processing' | 'toolUse' | 'toolDone' | 'reading' | 'writing' | 'sessionStart' | 'subagentStart' | 'subagentStop' | 'notification' | 'thinking'
+type ClaudeStatus = 'idle' | 'processing' | 'toolUse' | 'toolDone' | 'reading' | 'writing' | 'sessionStart' | 'subagentStart' | 'subagentStop' | 'notification' | 'permissionRequest' | 'thinking'
 
 // Broadcast Claude status to ALL clients across ALL sessions
 export function broadcastClaudeStatus(status: ClaudeStatus, tool?: string) {