feat(messenger): channels + @mentions in the CRM SDK adapter

CrmMessagingAdapter now implements the full SDK contract:
- browseChannels/createChannel/leaveChannel over the be-crm channel door
  (crm.messenger.channel.*); joinChannel is a governed public self-join over
  the socket (openThread) — the BFF has no join verb, OPA enforces it
- listMembers over crm.messenger.members → drives @mention autocomplete
- send forwards mentions[] on the socket path (→ IIOS MENTION inbox items)

So the CRM messenger (rendered by the SDK) now gets sectioned Channels/DMs,
browse+join+create, and @mention autocomplete/highlight — no embedded code.
(SDK re-packed to the local tarball; publish for deploy.) tsc + next build green.

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

package-lock.json

@@ -1030,7 +1030,7 @@
     "node_modules/@insignia/iios-messaging-ui": {
       "version": "0.1.0",
       "resolved": "file:../iios/packages/iios-messaging-ui/insignia-iios-messaging-ui-0.1.0.tgz",
-      "integrity": "sha512-6pSVWACjex1sXWzVqx+42rM6vgWEJ+1ud5y3DLKogJiQmfgFZgCB8vTw0PN/5FECugXC7iGuc9rV9RsHsP+EDw==",
+      "integrity": "sha512-B6Vzb75lBv4W3ZuKE4muMSz/OyUrE0NxImUI6sHaCBby5xveHVyanPiwkxiaqg9zZPYQMYiZRMONYwlNqyJvig==",
       "peerDependencies": {
         "@insignia/iios-kernel-client": "*",
         "react": ">=18"

src/lib/crm-messaging-adapter.ts

@@ -6,11 +6,15 @@
 // When no socket is available (token failed / demo), it degrades to a 4s history poll.
 
 import type {
+  ChannelSummary,
+  ChannelVisibility,
   Conversation,
+  CreateChannelInput,
   Membership,
   Message,
   MessageEvent,
   MessagingAdapter,
+  Person,
   Reaction,
   SendOpts,
   Unsubscribe,
@@ -106,11 +110,11 @@ export class CrmMessagingAdapter implements MessagingAdapter {
 
   async send(threadId: string, content: string, opts?: SendOpts): Promise<Message> {
     if (this.socket) {
-      const m = await this.socket.sendMessage(
-        threadId,
-        content,
-        opts?.parentInteractionId ? { parentInteractionId: opts.parentInteractionId } : undefined,
-      );
+      const sendOpts = {
+        ...(opts?.parentInteractionId ? { parentInteractionId: opts.parentInteractionId } : {}),
+        ...(opts?.mentions && opts.mentions.length ? { mentions: opts.mentions } : {}),
+      };
+      const m = await this.socket.sendMessage(threadId, content, Object.keys(sendOpts).length ? sendOpts : undefined);
       return this.fromKernel(m);
     }
     const m = await this.sdk.command<MessageDTO>("crm.messenger.send", { threadId, content });
@@ -152,6 +156,46 @@ export class CrmMessagingAdapter implements MessagingAdapter {
     if (this.socket) await this.socket.markRead(threadId, messageId);
   }
 
+  // ── channels + members (BFF, except join which is a governed socket self-join) ──
+  async browseChannels(): Promise<ChannelSummary[]> {
+    const rows = await this.sdk.query<Array<{ threadId: string; name: string; topic: string | null; visibility: string; memberCount: number; joined: boolean }>>(
+      "crm.messenger.channel.browse",
+      {},
+    );
+    return rows.map((c) => ({
+      threadId: c.threadId,
+      name: c.name,
+      topic: c.topic,
+      visibility: (c.visibility === "private" ? "private" : "public") as ChannelVisibility,
+      memberCount: c.memberCount,
+      joined: c.joined,
+    }));
+  }
+
+  async createChannel(input: CreateChannelInput): Promise<{ threadId: string }> {
+    return this.sdk.command<{ threadId: string }>("crm.messenger.channel.create", {
+      name: input.name,
+      ...(input.topic ? { topic: input.topic } : {}),
+      visibility: input.visibility,
+    });
+  }
+
+  async joinChannel(threadId: string): Promise<void> {
+    // Governed public self-join over the socket (the BFF has no join verb; OPA enforces it).
+    if (!this.socket) throw new Error("joining a channel needs a live connection");
+    await this.socket.openThread(threadId);
+    this.joined.add(threadId);
+  }
+
+  async leaveChannel(threadId: string): Promise<void> {
+    await this.sdk.command("crm.messenger.channel.leave", { threadId });
+  }
+
+  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 }));
+  }
+
   // ── polling fallback (no socket) ───────────────────────────────
   private startPoll(threadId: string): void {
     if (this.polls.has(threadId)) return;