refactor(maestro): rename brokerStreamUrl to attachStreamUrl

There is no broker: the SPA opens the daemon's /api/attach/:id directly
through the maestro-web proxy.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

web/src/attach.ts

@@ -5,7 +5,7 @@ import "@xterm/xterm/css/xterm.css";
 import type { ClientControl, Uuid } from "./types.js";
 
 /**
- * A single live attach: an xterm terminal bound to a daemon-broker WebSocket.
+ * A single live attach: an xterm terminal bound to the daemon's attach WebSocket.
  *
  * The connection is **decoupled from the UI**: it owns a long-lived WS that
  * keeps streaming PTY output into the terminal buffer whether or not the view
@@ -56,7 +56,7 @@ function esc(s: string): string {
  * reverse-proxies this WebSocket to the co-located daemon's `/api/attach/:id`
  * endpoint.
  */
-function brokerStreamUrl(sessionId: Uuid): string {
+function attachStreamUrl(sessionId: Uuid): string {
   const proto = location.protocol === "https:" ? "wss:" : "ws:";
   return `${proto}//${location.host}/api/attach/${encodeURIComponent(sessionId)}`;
 }
@@ -264,7 +264,7 @@ export function createAttachConnection(
     }
   };
 
-  const ws = new WebSocket(brokerStreamUrl(sessionId));
+  const ws = new WebSocket(attachStreamUrl(sessionId));
   ws.binaryType = "arraybuffer";
 
   const sendControl = (msg: ClientControl) => {

web/src/persistence.ts

@@ -4,7 +4,7 @@
 // anything malformed — a corrupt or stale blob falls back to a single empty tab.
 //
 // Sessions that no longer exist when a layout is restored are not pruned here
-// (the session list isn't known yet at boot); their panes attach, the broker
+// (the session list isn't known yet at boot); their panes attach, the daemon
 // closes the dead socket, and the pane auto-closes (see ConnectionPool.onClosed).
 
 import { freshId, type Layout, type Node, type Tab } from "./layout.js";