fix(community): refresh members list when a new agent joins

app/src/composables/useCommunityService.ts

@@ -141,8 +141,8 @@
   // Community query is perspective-scoped (typically one per perspective — low cost).
   // Use ChannelSummary — lightweight model without @HasMany relations.
   // Property getters run by default (deepQuery=true) via batched VALUES queries.
   const { data: communities, loading: communitiesLoading, error: communitiesError } = useLiveQuery(Community, perspective);
   const { data: allChannels, loading: channelsLoading, error: channelsError } = useLiveQuery(ChannelSummary, perspective);
 
   // Cache for conversation instances — populated during data fetching, looked up in computeds.
   // Plain Map (not reactive) is sufficient: updates always precede the ref changes that trigger re-computation.
@@ -163,8 +163,8 @@
 
   const isAuthor = computed(() => communities.value[0]?.author === me.value.did);
   const community = computed<Community>(() => communities.value[0]);
   const pinnedChannels = computed(() => allChannels.value.filter((channel) => channel.isPinned));
   const conversationChannels = computed(() => allChannels.value.filter((channel) => channel.isConversation));
   const spaceChannels = computed(() => allChannels.value.filter((channel) => !channel.isConversation));
   const pinnedConversationsWithAgents = computed((): ChannelDataWithAgents[] => {
     return pinnedConversations.value.map((data) => ({
@@ -490,7 +490,7 @@
   // Local dedup set avoids redundant addLinks RPCs — ChannelSummary doesn't
   // carry participants, so the old channel.participants.includes() check was lost.
   const knownParticipants = new Set<string>();
   function handleParticipantTracking(link: any) {
     if (link.data.predicate !== CHANNEL) return null;
     if (!link.author) return null;
 
@@ -517,9 +517,27 @@
   }
   perspective.addListener('link-added', handleParticipantTracking);
 
+  // Refetch the members list whenever the signalling service learns about a
+  // DID we don't already have in `members`. The signalling service tracks
+  // every agent that broadcasts a heartbeat (including their "first-broadcast"
+  // on join), so this catches new joiners automatically — without polling
+  // and without waiting for the modal to remount.
+  const membersDidSet = computed(() => new Set(members.value.map((m) => m.did)));
+  const stopMembersWatcher = signallingService
+    ? watch(
+        () => Object.keys(signallingService.agents.value),
+        (signallingDids) => {
+          if (membersLoading.value) return;
+          const hasNew = signallingDids.some((did) => did && !membersDidSet.value.has(did));
+          if (hasNew) getMembers();
+        },
+      )
+    : null;
+
   // Cleanup function to remove all listeners
   function cleanup() {
     perspective.removeListener('link-added', handleParticipantTracking);
+    if (stopMembersWatcher) stopMembersWatcher();
   }
 
   getMembers();