feat(webui): configure participant roster visibility

webui/src/api/scheduling.ts

@@ -1,6 +1,7 @@
 import { apiFetch, type ApiSettings } from "@govoplan/core-webui";
 
 export type SchedulingStatus = "draft" | "collecting" | "closed" | "decided" | "handed_off" | "cancelled" | "archived";
+export type SchedulingParticipantVisibility = "aggregates_only" | "names_and_statuses";
 
 export type SchedulingCandidateSlot = {
   id: string;
@@ -35,6 +36,20 @@ export type SchedulingParticipant = {
   metadata?: Record<string, unknown>;
 };
 
+export type SchedulingParticipantAggregate = {
+  total: number;
+  status_counts: Record<string, number>;
+};
+
+export type SchedulingParticipantVisibilityDecision = {
+  requested_visibility: SchedulingParticipantVisibility;
+  effective_visibility: SchedulingParticipantVisibility;
+  policy_applied: boolean;
+  reason?: string | null;
+  source_path: Record<string, unknown>[];
+  details: Record<string, unknown>;
+};
+
 export type SchedulingRequest = {
   id: string;
   tenant_id: string;
@@ -50,6 +65,10 @@ export type SchedulingRequest = {
   allow_external_participants: boolean;
   allow_participant_updates: boolean;
   result_visibility: string;
+  participant_visibility: SchedulingParticipantVisibility;
+  effective_participant_visibility: SchedulingParticipantVisibility;
+  participant_aggregate: SchedulingParticipantAggregate;
+  participant_visibility_decision: SchedulingParticipantVisibilityDecision;
   calendar_integration_enabled: boolean;
   calendar_id?: string | null;
   calendar_freebusy_enabled: boolean;
@@ -97,6 +116,7 @@ export type SchedulingRequestCreatePayload = {
   allow_external_participants?: boolean;
   allow_participant_updates?: boolean;
   result_visibility?: "organizer" | "after_response" | "after_close" | "public";
+  participant_visibility?: SchedulingParticipantVisibility;
   calendar?: {
     enabled?: boolean;
     calendar_id?: string | null;