feat(hub): raise agent turns/time limits and notify teachers on failure

Defaults and silo env go to 150 turns / 1800s wall clock. Run completion
appends a clear Feishu notice for max-turns, timeout, and other failures
(partial answer kept). Startup process-restart kills notify the bound chat.
Release v0.0.38.

hub/src/feishu/trigger.ts

@@ -40,6 +40,7 @@ import { createAgentSdkStderrSink } from "../agent/diagnostics.js";
 import { InactiveOrganizationError, lockActiveOrganization } from "../org/status.js";
 import { StreamingAgentCard } from "./card/streaming-card.js";
 import { createFileDeliveryMcpServer } from "./fileDeliveryTool.js";
+import { appendTeacherNotice, teacherFacingRunOutcome } from "./runOutcomeNotice.js";
 import { readFeishuContext } from "./read.js";
 import { MessageBatcher, messageBatchKey, type MessageBatcherOptions } from "./messageBatcher.js";
 import { ApprovalManager } from "./approval.js";
@@ -598,13 +599,24 @@ export function makeTriggerHandler(deps: TriggerDeps): TriggerHandler {
     agentExecution
       .then(async (result) => {
         const interrupted = result.status === "interrupted" && !wallTimeExceeded;
-        const finalText =
+        const hasPartialText = result.text.trim() !== "";
+        const outcome = teacherFacingRunOutcome({
+          wallTimeExceeded,
+          interrupted,
+          resultStatus: result.status,
+          resultError: result.error,
+          maxTurns: runPolicy.maxTurns,
+          maxRunSeconds: runPolicy.maxRunSeconds,
+          hasPartialText,
+        });
+        const baseText =
           result.text !== ""
             ? result.text
-            : result.status === "failed" && result.error !== undefined
+            : result.status === "failed" && result.error !== undefined && outcome.notice === undefined
               ? `\u5904\u7406\u5931\u8D25: ${result.error}`
               : result.text;
-        await card.finish(finalText, { interrupted });
+        const finalText = appendTeacherNotice(baseText, outcome.notice);
+        await card.finish(finalText, { interrupted, isError: outcome.isError });
         const metadataPatch = sessionMetadataPatch(result.sdkSessionId);
         if (metadataPatch !== null) {
           await deps.prisma.agentSession.update({
@@ -675,7 +687,20 @@ export function makeTriggerHandler(deps: TriggerDeps): TriggerHandler {
         if (removedProcessingReaction) {
           await addReaction(rt, msg.message_id, "CrossMark");
         }
-        await card.fail(e instanceof Error ? e.message : String(e));
+        await card.fail(
+          appendTeacherNotice(
+            "",
+            teacherFacingRunOutcome({
+              wallTimeExceeded: false,
+              interrupted: false,
+              resultStatus: "failed",
+              resultError: e instanceof Error ? e.message : String(e),
+              maxTurns: runPolicy.maxTurns,
+              maxRunSeconds: runPolicy.maxRunSeconds,
+              hasPartialText: false,
+            }).notice ?? `\u274C \u4EFB\u52A1\u5931\u8D25\uFF1A${e instanceof Error ? e.message : String(e)}`,
+          ),
+        );
         try {
           await deps.prisma.agentRun.update({
             where: { id: run.id },