Add plan execution mode, game ID, and version to health endpoint

- Add executionMode and gameId columns to StreamPlan schema
- Add migration for new columns
- Support executionMode/gameId in plan create and update endpoints
- Add version field to health check response from package.json

src/types/api.ts

@@ -44,9 +44,18 @@ export interface LinkedAccountResponse {
 // ── Streams ──────────────────────────────────────────────
 export interface CreateStreamPlanBody {
   name: string;
+  executionMode?: string;
+  gameId?: string;
   destinations: CreateDestinationBody[];
 }
 
+export interface UpdateStreamPlanBody {
+  name?: string;
+  executionMode?: string;
+  gameId?: string;
+  destinations?: CreateDestinationBody[];
+}
+
 export interface CreateDestinationBody {
   linkedAccountId: string;
   title: string;
@@ -60,6 +69,8 @@ export interface StreamPlanResponse {
   id: string;
   name: string;
   status: string;
+  executionMode: string;
+  gameId: string;
   createdAt: string;
   updatedAt: string;
   destinations: StreamDestinationResponse[];