#168: Home diagram claimed events.subscribe, which was never built

UnixSocketHerdrClient's own class doc says streaming methods
(events.subscribe) 'keep their own long-lived connection and land in a
later ticket'. The shipped path polls for status and delivers a turn with
agent.prompt. The audit flagged this edge label and it was the last one
left.

Home.md

@@ -40,7 +40,7 @@ flowchart LR
 
     OPUS -->|"MCP fleet_send (blocks)"| SRV
     W -.->|"MCP fleet_reply"| SRV
-    CLI -->|"Unix socket<br/>send_text · events.subscribe"| HERDR
+    CLI -->|"Unix socket<br/>agent.prompt · status polling"| HERDR
     HERDR -->|"drives PTY"| W
     W -->|"inference"| M