feat(messenger): wire member management (add/remove/rename) + pull SDK 0.1.5

CrmMessagingAdapter implements addMember/removeMember/renameConversation over
crm.messenger.participant.add/remove + group.rename, powering the SDK's new
group/channel settings panel. listMembers maps customer role too.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/lib/crm-messaging-adapter.ts

@@ -207,9 +207,21 @@ export class CrmMessagingAdapter implements MessagingAdapter {
     await this.sdk.command("crm.messenger.channel.leave", { threadId });
   }
 
+  async addMember(threadId: string, userId: string): Promise<void> {
+    await this.sdk.command("crm.messenger.participant.add", { threadId, userId });
+  }
+
+  async removeMember(threadId: string, userId: string): Promise<void> {
+    await this.sdk.command("crm.messenger.participant.remove", { threadId, userId });
+  }
+
+  async renameConversation(threadId: string, subject: string): Promise<void> {
+    await this.sdk.command("crm.messenger.group.rename", { threadId, subject });
+  }
+
   async listMembers(threadId: string): Promise<Person[]> {
     const rows = await this.sdk.query<Array<{ userId: string; displayName: string; role: string }>>("crm.messenger.members", { threadId });
-    return rows.map((r) => ({ id: r.userId, name: r.displayName, kind: "staff" as const }));
+    return rows.map((r) => ({ id: r.userId, name: r.displayName, kind: r.role === "CUSTOMER" ? "customer" : "staff" }));
   }
 
   // ── polling fallback (no socket) ───────────────────────────────