Grok Build Tightens Agent UI Sync

These are quiet but high-leverage reliability fixes for a terminal-native coding agent, reducing confusion exactly when developers are managing long-running work.

• –Synchronized model and context displays make model switching safer for context-heavy coding sessions.
• –Goal panel access during active workflows improves visibility without interrupting agent execution.
• –Narrow-terminal improvements make the TUI more practical over SSH, tmux, and constrained panes.
• –The update strengthens the interface layer rather than adding a new model or major agent capability.