feat: configure deep search llm models

mindsearch-providers.mjs

@@ -90,6 +90,8 @@ export async function startResearchTask(question, {
   endpoint,
   depth = 'standard',
   userId = null,
+  llmProviderKeyId = '',
+  llmModel = '',
   timeoutMs = 30000,
   fetchImpl = fetch,
   secret = process.env.TKMIND_DEEP_SEARCH_SECRET,
@@ -98,6 +100,9 @@ export async function startResearchTask(question, {
     question,
     depth,
     ...(userId ? { userId } : {}),
+    ...(llmProviderKeyId && llmModel
+      ? { llm_provider_key_id: llmProviderKeyId, llm_model: llmModel }
+      : {}),
   }, { timeoutMs, fetchImpl, userId, secret });
   if (!body || typeof body !== 'object' || !body.task_id) throw new Error('Research service returned an invalid task');
   return {