v0.4.3

Changed

• AgentPanel footer status is smaller muted text (text-sm / text-tertiary-foreground).

Fixed

• AgentPanel / useAgentStream: streamed tool-call events merge into one card (same id, still running, or result-before-params) instead of stacking duplicates.
• SSE tool-call / tool-result accept field aliases (tool_call_id / callId, name, label, arguments / args, output).