bulk operations fixes

- Frontend: implémente bulkDelete, bulkArchive, bulkRestore
- Backend: adapts ticket DTOs pour bulk operations
- Infrastructure: MCP server pour gestion bulk tickets
- Tests: coverage frontend + backend

frontend/src/adapters/http/streamGateways.ts

@@ -29,6 +29,7 @@ import type {
   Sprint,
   TerminalSession,
   Ticket,
+  TicketBulkResult,
   TicketCarnet,
   TicketChat,
   TicketLinkKind,
@@ -297,6 +298,21 @@ export class HttpTicketGateway implements TicketGateway {
   async delete(projectId: string, ref: string): Promise<void> {
     await this.http.invoke<void>("ticket_delete", { request: { projectId, ref } });
   }
+  bulkUpdateStatus(projectId: string, refs: string[], status: Ticket["status"]): Promise<TicketBulkResult> {
+    return this.http.invoke<TicketBulkResult>("ticket_bulk_update_status", {
+      request: { projectId, refs, status },
+    });
+  }
+  bulkUpdatePriority(projectId: string, refs: string[], priority: Ticket["priority"]): Promise<TicketBulkResult> {
+    return this.http.invoke<TicketBulkResult>("ticket_bulk_update_priority", {
+      request: { projectId, refs, priority },
+    });
+  }
+  bulkDelete(projectId: string, refs: string[]): Promise<TicketBulkResult> {
+    return this.http.invoke<TicketBulkResult>("ticket_bulk_delete", {
+      request: { projectId, refs },
+    });
+  }
   readCarnet(projectId: string, ref: string): Promise<TicketCarnet> {
     return this.http.invoke<TicketCarnet>("ticket_read_carnet", { request: { projectId, ref } });
   }