feat(ipc): Phase 833 sync-guild-mesh-quad-unread

Emit notification and guild-sync-ready with quadUnread after quad mesh
channel unread fanout recovery.

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.
 
+**Phase 833 (v0.8.800):** `sync-guild-mesh-quad-unread` recovery IPC. Bundle: `npm run test:ci-phase833`.
+
 **Phase 832 (v0.8.799):** `sync-guild-mesh-quad-roster` recovery IPC. Bundle: `npm run test:ci-phase832`.
 
 **Phase 831 (v0.8.798):** `sync-guild-mesh-quad-presence` recovery IPC. Bundle: `npm run test:ci-phase831`.

index.js

@@ -1450,6 +1450,29 @@ async function dispatchUiMessage (platform, msg, hooks = {}) {
     })
     return true
   }
+  if (t === 'sync-guild-mesh-quad-unread') {
+    if (platform.mode === 'guild' && platform.guild?.guild?.id) {
+      const gid = platform.guild.guild.id
+      const peerN = platform.guild?.peers?.size ?? 0
+      platform.emit('guild-mesh-topology', {
+        guildId: gid,
+        meshPeerCount: peerN,
+        manualRecovery: true,
+        quadMesh: true
+      })
+      platform.emit('notification')
+      platform.emit('guild-sync-ready', { guildId: gid, quadUnread: 1, channels: 1 })
+      if (typeof platform.requestGuildSyncFanout === 'function') {
+        platform.requestGuildSyncFanout()
+      }
+    }
+    pushState({
+      structural: true,
+      light: false,
+      source: 'sync-guild-mesh-quad-unread'
+    })
+    return true
+  }
   if (t === 'sync-guild-mesh-quad-roster') {
     if (platform.mode === 'guild' && platform.guild?.guild?.id) {
       const gid = platform.guild.guild.id