feat(assist): сбор usage-токенов и отдача в meta (время этапов уже было)

orchestrator.js

@@ -241,11 +241,13 @@ async function runPipeline(question, stand, vmDocsBaseUrl, controller, start) {
     // Этап 1 (resource_type).
     let resourceType = null;
     let stage1Ok = false;
+    const usage = { prompt: 0, completion: 0, total: 0 };
     const budget = TOTAL_DEADLINE_MS - (Date.now() - start);
     if (budget > 0 && resourceTypes.size > 0) {
         const r1 = await stage1ExtractResourceType(question, {
             resourceTypesSet: resourceTypes,
             controller,
+            usageRef: usage,
         });
         stage1Ok = r1.ok;
         if (r1.ok && r1.resourceType) resourceType = r1.resourceType;
@@ -267,6 +269,7 @@ async function runPipeline(question, stand, vmDocsBaseUrl, controller, start) {
         model: ENV.LLM_MODEL,
         maxTokens: 2048,
         controller,
+        usageRef: usage,
     });
     const tStage2 = Date.now();
 
@@ -288,6 +291,9 @@ async function runPipeline(question, stand, vmDocsBaseUrl, controller, start) {
             stage1_ms: tStage1 - tIndex,
             search_ms: tSearch - tStage1,
             stage2_ms: tStage2 - tSearch,
+            tokens: usage.total,
+            prompt_tokens: usage.prompt,
+            completion_tokens: usage.completion,
         },
     };
 }