Remove hard timeouts and fallback paths in chat flow

Frontend/server/api/pilot-chat.post.ts

@@ -106,6 +106,20 @@ export default defineEventHandler(async (event) => {
         writer.write({ type: "text-end", id: textId });
         writer.write({ type: "finish", finishReason: "stop" });
       } catch (error: any) {
+        const errorText = String(error?.message ?? error);
+
+        await persistChatMessage({
+          teamId: auth.teamId,
+          conversationId: auth.conversationId,
+          authorUserId: null,
+          role: "ASSISTANT",
+          text: errorText,
+          requestId,
+          eventType: "assistant",
+          phase: "error",
+          transient: false,
+        });
+
         writer.write({
           type: "data-agent-log",
           data: {
@@ -118,7 +132,7 @@ export default defineEventHandler(async (event) => {
         writer.write({
           type: "text-delta",
           id: textId,
-          delta: `Не удалось завершить задачу: ${String(error?.message ?? "unknown error")}`,
+          delta: errorText,
         });
         writer.write({ type: "text-end", id: textId });
         writer.write({ type: "finish", finishReason: "stop" });