fix(active-memory): enforce timeoutMs as hard deadline via Promise.race (#71687)

Wrap runRecallSubagent() with Promise.race so maybeResolveActiveRecall
returns a timeout result at the configured timeoutMs even when the
embedded run has not cooperatively checked the abort signal. Late
subagent rejections are caught silently to prevent unhandled promise
errors.

Fixes #71629

extensions/active-memory/index.test.ts

@@ -1292,6 +1292,44 @@ describe("active-memory plugin", () => {
     ).toBe(true);
   });
 
+  it("returns timeout within a hard deadline even when the subagent never checks the abort signal", async () => {
+    const CONFIGURED_TIMEOUT_MS = 200;
+    const MARGIN_MS = 500;
+    __testing.setMinimumTimeoutMsForTests(1);
+    api.pluginConfig = {
+      agents: ["main"],
+      timeoutMs: CONFIGURED_TIMEOUT_MS,
+      logging: true,
+    };
+    plugin.register(api as unknown as OpenClawPluginApi);
+    // Simulate a subagent that never cooperatively checks the abort signal --
+    // it just blocks for a long time.
+    runEmbeddedPiAgent.mockImplementationOnce(
+      () => new Promise((resolve) => setTimeout(() => resolve({ payloads: [] }), 30_000)),
+    );
+
+    const startedAt = Date.now();
+    const result = await hooks.before_prompt_build(
+      { prompt: "what wings should i order? hard deadline test", messages: [] },
+      {
+        agentId: "main",
+        trigger: "user",
+        sessionKey: "agent:main:hard-deadline",
+        messageProvider: "webchat",
+      },
+    );
+    const wallClockMs = Date.now() - startedAt;
+
+    // The hook returns undefined for timeout results (summary is null).
+    expect(result).toBeUndefined();
+    const infoLines = vi
+      .mocked(api.logger.info)
+      .mock.calls.map((call: unknown[]) => String(call[0]));
+    expect(infoLines.some((line: string) => line.includes("status=timeout"))).toBe(true);
+    // Hard deadline: wall-clock time must be near timeoutMs, not 30s.
+    expect(wallClockMs).toBeLessThan(CONFIGURED_TIMEOUT_MS + MARGIN_MS);
+  });
+
   it("returns undefined instead of throwing when an unexpected error escapes prompt building", async () => {
     const result = await hooks.before_prompt_build(
       { prompt: "what should i eat? escape test", messages: undefined as never },

extensions/active-memory/index.ts

@@ -1784,17 +1784,56 @@ async function maybeResolveActiveRecall(params: {
   }
 
   const controller = new AbortController();
+  const TIMEOUT_SENTINEL = Symbol("timeout");
   const timeoutId = setTimeout(() => {
     controller.abort(new Error(`active-memory timeout after ${params.config.timeoutMs}ms`));
   }, params.config.timeoutMs);
   timeoutId.unref?.();
 
+  const timeoutPromise = new Promise<typeof TIMEOUT_SENTINEL>((resolve) => {
+    controller.signal.addEventListener(
+      "abort",
+      () => {
+        resolve(TIMEOUT_SENTINEL);
+      },
+      { once: true },
+    );
+  });
+
   try {
-    const { rawReply, transcriptPath, searchDebug } = await runRecallSubagent({
+    const subagentPromise = runRecallSubagent({
       ...params,
       modelRef: resolvedModelRef,
       abortSignal: controller.signal,
     });
+    // Silently catch late rejections after timeout so they don't become
+    // unhandled promise rejections.
+    subagentPromise.catch(() => undefined);
+
+    const raceResult = await Promise.race([subagentPromise, timeoutPromise]);
+
+    if (raceResult === TIMEOUT_SENTINEL) {
+      const result: ActiveRecallResult = {
+        status: "timeout",
+        elapsedMs: Date.now() - startedAt,
+        summary: null,
+      };
+      if (params.config.logging) {
+        params.api.logger.info?.(
+          `${logPrefix} done status=${result.status} elapsedMs=${String(result.elapsedMs)} summaryChars=0`,
+        );
+      }
+      await persistPluginStatusLines({
+        api: params.api,
+        agentId: params.agentId,
+        sessionKey: params.sessionKey,
+        statusLine: buildPluginStatusLine({ result, config: params.config }),
+        searchDebug: result.searchDebug,
+      });
+      return result;
+    }
+
+    const { rawReply, transcriptPath, searchDebug } = raceResult;
     const summary = truncateSummary(
       normalizeActiveSummary(rawReply) ?? "",
       params.config.maxSummaryChars,