Integrate LiveKit SFU and harden booking workflow

lib/meeting/kicks.ts

@@ -0,0 +1,33 @@
+const KICK_RETENTION_MS = 24 * 60 * 60_000;
+type KickList = { ids: Set<string>; expiresAt: number };
+const kickedParticipantIds = new Map<string, KickList>();
+const kickedClientIds = new Map<string, KickList>();
+
+function activeList(map: Map<string, KickList>, eventSlug: string): Set<string> | undefined {
+  const entry = map.get(eventSlug);
+  if (!entry) return undefined;
+  if (entry.expiresAt <= Date.now()) {
+    map.delete(eventSlug);
+    return undefined;
+  }
+  return entry.ids;
+}
+
+export function isMeetingParticipantKicked(eventSlug: string, participantId: string, clientId?: string): boolean {
+  return Boolean(
+    activeList(kickedParticipantIds, eventSlug)?.has(participantId) ||
+      (clientId && activeList(kickedClientIds, eventSlug)?.has(clientId)),
+  );
+}
+
+export function markMeetingParticipantKicked(eventSlug: string, participantId: string, clientId?: string): void {
+  const expiresAt = Date.now() + KICK_RETENTION_MS;
+  const participantIds = activeList(kickedParticipantIds, eventSlug) ?? new Set<string>();
+  participantIds.add(participantId);
+  kickedParticipantIds.set(eventSlug, { ids: participantIds, expiresAt });
+  if (clientId) {
+    const clientIds = activeList(kickedClientIds, eventSlug) ?? new Set<string>();
+    clientIds.add(clientId);
+    kickedClientIds.set(eventSlug, { ids: clientIds, expiresAt });
+  }
+}