feat(phase699): emoji registry CSV and sticker pack export mesh parity (v0.8.674)

Add signed emoji registry CSV mesh (RPC 116) and sticker pack export CSV (RPC 117)
with emoji-csv UI, platform mixin, delivery receipts, ui-flow IPC, agentctl journeys,
and test:ci-phase699 regression bundle including phase698 chain.

index.js

@@ -550,6 +550,12 @@ class PearcordGuild extends EventEmitter {
     if (method === RPC.EFFECTIVE_PERMISSION_EXPORT_CSV_SYNC) {
       this.emit('effective-permission-export-csv-sync', payload)
     }
+    if (method === RPC.EMOJI_REGISTRY_CSV_SYNC) {
+      this.emit('emoji-registry-csv-sync', payload)
+    }
+    if (method === RPC.STICKER_PACK_EXPORT_CSV_SYNC) {
+      this.emit('sticker-pack-export-csv-sync', payload)
+    }
     if (method === RPC.MESSAGE_SEARCH_REQUEST) {
       this.emit('message-search-request', payload)
     }
@@ -814,6 +820,14 @@ class PearcordGuild extends EventEmitter {
       this.emit('effective-permission-export-csv-sync', payload)
       return
     }
+    if (method === RPC.EMOJI_REGISTRY_CSV_SYNC) {
+      this.emit('emoji-registry-csv-sync', payload)
+      return
+    }
+    if (method === RPC.STICKER_PACK_EXPORT_CSV_SYNC) {
+      this.emit('sticker-pack-export-csv-sync', payload)
+      return
+    }
     if (method === RPC.AUDIT_EXPORT_ARCHIVE) {
       this.emit('audit-export-archive', payload)
       return
@@ -1135,6 +1149,14 @@ class PearcordGuild extends EventEmitter {
     broadcastGossip(this, RPC.EFFECTIVE_PERMISSION_EXPORT_CSV_SYNC, payload)
   }
 
+  gossipEmojiRegistryCsvSync (payload) {
+    broadcastGossip(this, RPC.EMOJI_REGISTRY_CSV_SYNC, payload)
+  }
+
+  gossipStickerPackExportCsvSync (payload) {
+    broadcastGossip(this, RPC.STICKER_PACK_EXPORT_CSV_SYNC, payload)
+  }
+
   gossipAuditExportArchive (payload) {
     broadcastGossip(this, RPC.AUDIT_EXPORT_ARCHIVE, payload)
   }