Phase 702: poll registry CSV & scheduled message export mesh parity (v0.8.677)

Add signed poll registry CSV mesh modal and scheduled message queue CSV export
following the ban/member CSV parity pattern. RPC 122/123 gossip sync, poll-csv-ui,
platform poll-csv-mixin, ui-flow IPC, deep link ?poll-csv=1, agentctl journeys,
test:ci-phase702 regression bundle, and documentation updates.

Also fixes missing showBanCsvMeshModalFromDeepLink helper from Phase 701.

index.js

@@ -568,6 +568,12 @@ class PearcordGuild extends EventEmitter {
     if (method === RPC.AUTOMOD_RULE_EXPORT_CSV_SYNC) {
       this.emit('automod-rule-export-csv-sync', payload)
     }
+    if (method === RPC.POLL_REGISTRY_CSV_SYNC) {
+      this.emit('poll-registry-csv-sync', payload)
+    }
+    if (method === RPC.SCHEDULED_MESSAGE_EXPORT_CSV_SYNC) {
+      this.emit('scheduled-message-export-csv-sync', payload)
+    }
     if (method === RPC.MESSAGE_SEARCH_REQUEST) {
       this.emit('message-search-request', payload)
     }
@@ -856,6 +862,14 @@ class PearcordGuild extends EventEmitter {
       this.emit('automod-rule-export-csv-sync', payload)
       return
     }
+    if (method === RPC.POLL_REGISTRY_CSV_SYNC) {
+      this.emit('poll-registry-csv-sync', payload)
+      return
+    }
+    if (method === RPC.SCHEDULED_MESSAGE_EXPORT_CSV_SYNC) {
+      this.emit('scheduled-message-export-csv-sync', payload)
+      return
+    }
     if (method === RPC.AUDIT_EXPORT_ARCHIVE) {
       this.emit('audit-export-archive', payload)
       return
@@ -1201,6 +1215,14 @@ class PearcordGuild extends EventEmitter {
     broadcastGossip(this, RPC.AUTOMOD_RULE_EXPORT_CSV_SYNC, payload)
   }
 
+  gossipPollRegistryCsvSync (payload) {
+    broadcastGossip(this, RPC.POLL_REGISTRY_CSV_SYNC, payload)
+  }
+
+  gossipScheduledMessageExportCsvSync (payload) {
+    broadcastGossip(this, RPC.SCHEDULED_MESSAGE_EXPORT_CSV_SYNC, payload)
+  }
+
   gossipAuditExportArchive (payload) {
     broadcastGossip(this, RPC.AUDIT_EXPORT_ARCHIVE, payload)
   }