refactor(maestro): flatten web UI to a single host

Session tree nests by working directory only; the daemon chips in the
header become a session tally, and the spawn form loses its host picker.
API calls move from /api/daemons/:id/* to /api/dirs, /api/recent-dirs,
/api/gitroot, and /api/info.

web/src/attach.ts

@@ -36,12 +36,11 @@ export interface AttachOptions {
   onClosed?: (sessionId: Uuid) => void;
 }
 
-/** What the header shows about the session (name / command / host). Optional —
- * falls back to a short session id when the session isn't known yet. */
+/** What the header shows about the session (name / command). Optional — falls
+ * back to a short session id when the session isn't known yet. */
 export interface AttachInfo {
   name: string;
   command: string;
-  daemon: string;
 }
 
 function esc(s: string): string {
@@ -53,10 +52,9 @@ function esc(s: string): string {
 }
 
 /**
- * Same-origin broker URL. The browser loads from `maestro-web`, which
+ * Same-origin attach URL. The browser loads from `maestro-web`, which
  * reverse-proxies this WebSocket to the co-located daemon's `/api/attach/:id`
- * broker endpoint (the daemon short-circuits to the local PTY when it owns the
- * session, or brokers to the owning peer — NAP-247/NAP-327).
+ * endpoint.
  */
 function brokerStreamUrl(sessionId: Uuid): string {
   const proto = location.protocol === "https:" ? "wss:" : "ws:";
@@ -70,18 +68,15 @@ export function createAttachConnection(
 ): AttachConnection {
   const el = document.createElement("div");
   el.className = "attach";
-  // Useful identity over a bare UUID: name · command @ host. The full id stays
-  // in the tooltip for when you really need it.
+  // Useful identity over a bare UUID: name · command. The full id stays in the
+  // tooltip for when you really need it.
   const titleHtml = info
     ? `<span class="at-name">${esc(info.name)}</span>` +
       (info.command && info.command !== info.name
         ? `<span class="at-cmd">${esc(info.command)}</span>`
-        : "") +
-      (info.daemon ? `<span class="at-host">${esc(info.daemon)}</span>` : "")
+        : "")
     : `session <span class="sid">${esc(sessionId.slice(0, 8))}</span>`;
-  const titleAttr = info
-    ? `${info.name} · ${info.command} @ ${info.daemon}  (${sessionId})`
-    : sessionId;
+  const titleAttr = info ? `${info.name} · ${info.command}  (${sessionId})` : sessionId;
   el.innerHTML = `
     <header class="attach-header">
       <a class="btn btn-ghost back" href="#/" aria-label="Back to catalog" title="Back to catalog">←</a>
@@ -317,9 +312,8 @@ export function createAttachConnection(
   };
 
   ws.onclose = (ev) => {
-    // The web proxy relays a broker/daemon rejection (no shared perimeter, peer
-    // down, unknown session) as an application close code (4000+) carrying a
-    // human reason. Show it in the pane — both the header and the terminal body
+    // The web proxy relays a daemon rejection (unknown session) as an
+    // application close code (4000+) carrying a human reason. Show it in the pane — both the header and the terminal body
     // — and KEEP the pane up so the user can read why, instead of letting it
     // flash and vanish (#39). Clean session-ends and ordinary drops keep the
     // auto-close behavior below.