feat: add dynamic variables and startup result handling in batch run schemas

- Introduced dynamic_variables field in BatchRunCreate schema to support flexible input types.
- Added BatchStartupResult schema to encapsulate startup state, including greeting and auto-confirmed messages.
- Updated BatchRunCaseOut schema to include startup results, enhancing the structure for test run outputs.
- Enhanced test run orchestration to prepare and validate dynamic configurations, ensuring isolated variable management across test cases.
- Implemented changes in the frontend to accommodate new data structures for improved test case execution and result tracking.

frontend/src/data/batch-run.ts

@@ -59,11 +59,23 @@ export type BatchTurnResult = {
   evaluations: BatchEvaluationResult[];
 };
 
+export type BatchStartupResult = {
+  completed: boolean;
+  greeting: string;
+  assistantOutputs: string[];
+  autoConfirmedMessages: Array<{
+    title?: string;
+    message?: string;
+    actions?: Array<{ id?: string; label?: string }>;
+  }>;
+};
+
 export type BatchRunCase = {
   id: string;
   name: string;
   status: BatchCaseStatus;
   turns: BatchTurnResult[];
+  startup?: BatchStartupResult;
   overallCriteria: BatchEvaluationResult[];
   attemptCount: number;
   maxAttempts: number;