feat(cli): v0.1.7 — --name, --mesh, --join flags for launch

- `claudemesh launch --name Mou` sets per-session display name
- `claudemesh launch --mesh car-dealers` selects mesh (interactive picker if >1)
- `claudemesh launch --join <token-or-url>` joins a mesh inline before launching
- Broker stores per-presence displayName override (prefers over member default)
- Session config isolated via tmpdir (auto-cleanup on exit)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

apps/broker/src/broker.ts

@@ -307,6 +307,7 @@ export async function refreshStatusFromJsonl(
 export interface ConnectParams {
   memberId: string;
   sessionId: string;
+  displayName?: string;
   pid: number;
   cwd: string;
 }
@@ -321,6 +322,7 @@ export async function connectPresence(
     .values({
       memberId: params.memberId,
       sessionId: params.sessionId,
+      displayName: params.displayName ?? null,
       pid: params.pid,
       cwd: params.cwd,
       status: "idle",
@@ -370,7 +372,8 @@ export async function listPeersInMesh(
   const rows = await db
     .select({
       pubkey: memberTable.peerPubkey,
-      displayName: memberTable.displayName,
+      memberDisplayName: memberTable.displayName,
+      presenceDisplayName: presence.displayName,
       status: presence.status,
       summary: presence.summary,
       sessionId: presence.sessionId,
@@ -385,7 +388,15 @@ export async function listPeersInMesh(
       ),
     )
     .orderBy(asc(presence.connectedAt));
-  return rows;
+  // Prefer per-session displayName over member-level displayName.
+  return rows.map((r) => ({
+    pubkey: r.pubkey,
+    displayName: r.presenceDisplayName || r.memberDisplayName,
+    status: r.status,
+    summary: r.summary,
+    sessionId: r.sessionId,
+    connectedAt: r.connectedAt,
+  }));
 }
 
 /** Update the summary text on a presence row. */

apps/broker/src/index.ts

@@ -400,6 +400,7 @@ async function handleHello(
   const presenceId = await connectPresence({
     memberId: member.id,
     sessionId: hello.sessionId,
+    displayName: hello.displayName,
     pid: hello.pid,
     cwd: hello.cwd,
   });
@@ -411,9 +412,10 @@ async function handleHello(
     cwd: hello.cwd,
   });
   incMeshCount(hello.meshId);
+  const effectiveDisplayName = hello.displayName || member.displayName;
   log.info("ws hello", {
     mesh_id: hello.meshId,
-    member: member.displayName,
+    member: effectiveDisplayName,
     presence_id: presenceId,
     session_id: hello.sessionId,
   });
@@ -422,7 +424,7 @@ async function handleHello(
   // races the caller's closure assignment, causing subsequent client
   // messages to fail the "no_hello" check.
   void maybePushQueuedMessages(presenceId);
-  return { presenceId, memberDisplayName: member.displayName };
+  return { presenceId, memberDisplayName: effectiveDisplayName };
 }
 
 async function handleSend(

apps/broker/src/types.ts

@@ -52,6 +52,7 @@ export interface WSHelloMessage {
   meshId: string;
   memberId: string;
   pubkey: string; // must match mesh.member.peerPubkey
+  displayName?: string; // optional override for this session
   sessionId: string;
   pid: number;
   cwd: string;