Await completions (#153)

* Continue polling stats while waiting for completions to finish

* Clarify convert to function call instructions

app/src/server/api/routers/promptVariants.router.ts

@@ -131,6 +131,8 @@ export const promptVariantsRouter = createTRPCRouter({
       const inputTokens = overallTokens._sum?.inputTokens ?? 0;
       const outputTokens = overallTokens._sum?.outputTokens ?? 0;
 
+      const awaitingCompletions = outputCount < scenarioCount;
+
       const awaitingEvals = !!evalResults.find(
         (result) => result.totalCount < scenarioCount * evals.length,
       );
@@ -142,6 +144,7 @@ export const promptVariantsRouter = createTRPCRouter({
         overallCost: overallTokens._sum?.cost ?? 0,
         scenarioCount,
         outputCount,
+        awaitingCompletions,
         awaitingEvals,
       };
     }),