feat(ui-flow): DM rename and call IPC handlers for Phase 655 header

Wire rename-group-dm, start-dm-voice, start-dm-video, and sidebarFilterActive
on open-dm so the renderer matches platform DM inbox capabilities.

Co-authored-by: Cursor <[email protected]>

README.md

@@ -2,6 +2,8 @@
 
 Pearcord desktop UI IPC dispatch and automated flow scenarios for Bare smokes. Mirrors `apps/pearcord` pear-pipe message handling.
 
+**v0.8.628 (Phase 655 batch 2):** IPC `rename-group-dm`, `start-dm-voice`, `start-dm-video`; `open-dm` passes `sidebarFilterActive`. See [DM_INBOX.md](../../docs/DM_INBOX.md).
+
 **Phase 654 now active** with 50 swarm/repl/sync items; composer production UI (autofocus, send btn, autogrow) landed with manual agentctl + BOOT_OK verification; platform/swarm-manager changes for adaptive retry + discovery aid.
 
 **v0.8.624 (Phase 652):** `export-mesh-replication-diagnostics` → `mesh-replication-diagnostics-exported`; hub subscribe + composer focus. Bundle: `npm run test:phase652-live-mesh-churn` (app repo).

index.js

@@ -1831,7 +1831,8 @@ async function dispatchUiMessage (platform, msg, hooks = {}) {
   if (t === 'open-dm') {
     await platform.openDM({
       peerUserId: msg.peerUserId,
-      peerDisplayName: msg.peerDisplayName || msg.peerUserId?.slice(0, 8)
+      peerDisplayName: msg.peerDisplayName || msg.peerUserId?.slice(0, 8),
+      sidebarFilterActive: !!msg.sidebarFilterActive
     })
     pushState()
     if (platform.activeChannelId) {
@@ -1839,6 +1840,24 @@ async function dispatchUiMessage (platform, msg, hooks = {}) {
     }
     return true
   }
+  if (t === 'rename-group-dm') {
+    await platform.renameGroupDM({
+      channelId: msg.channelId,
+      displayName: msg.displayName
+    })
+    pushState()
+    return true
+  }
+  if (t === 'start-dm-voice') {
+    const out = await platform.startDmVoiceCall()
+    send({ type: 'dm-voice-call-started', ...out })
+    return true
+  }
+  if (t === 'start-dm-video') {
+    const out = await platform.startDmVideoCall()
+    send({ type: 'dm-video-call-started', ...out })
+    return true
+  }
   if (t === 'create-group-dm') {
     await platform.createGroupDM({
       peerUserIds: msg.peerUserIds || [],