feat(boards): add max_agents field to board models and enforce limits

frontend/src/api/generated/model/boardCreate.ts

@@ -17,6 +17,8 @@ export interface BoardCreate {
   gateway_id?: string | null;
   goal_confirmed?: boolean;
   goal_source?: string | null;
+  /** @minimum 0 */
+  max_agents?: number;
   name: string;
   objective?: string | null;
   only_lead_can_change_status?: boolean;

frontend/src/api/generated/model/boardRead.ts

@@ -19,6 +19,8 @@ export interface BoardRead {
   goal_confirmed?: boolean;
   goal_source?: string | null;
   id: string;
+  /** @minimum 0 */
+  max_agents?: number;
   name: string;
   objective?: string | null;
   only_lead_can_change_status?: boolean;

frontend/src/api/generated/model/boardUpdate.ts

@@ -17,6 +17,7 @@ export interface BoardUpdate {
   gateway_id?: string | null;
   goal_confirmed?: boolean | null;
   goal_source?: string | null;
+  max_agents?: number | null;
   name?: string | null;
   objective?: string | null;
   only_lead_can_change_status?: boolean | null;