fix(feishu): bound sender name cache (#103513)

extensions/feishu/src/bot-sender-name.test.ts

@@ -65,4 +65,37 @@ describe("resolveFeishuSenderName", () => {
 
     expect(get).toHaveBeenCalledTimes(2);
   });
+
+  it("evicts the oldest sender while retaining recent sender names", async () => {
+    const get = vi.fn(async (params: { path: { user_id: string } }) => ({
+      data: { user: { name: `name-${params.path.user_id}` } },
+    }));
+    createFeishuClientMock.mockReturnValue({ contact: { user: { get } } });
+
+    for (let index = 0; index < 501; index += 1) {
+      await resolveFeishuSenderName({
+        account,
+        senderId: `ou_sender_cap_${index}`,
+        log: vi.fn(),
+      });
+    }
+    await resolveFeishuSenderName({
+      account,
+      senderId: "ou_sender_cap_0",
+      log: vi.fn(),
+    });
+    await resolveFeishuSenderName({
+      account,
+      senderId: "ou_sender_cap_500",
+      log: vi.fn(),
+    });
+
+    expect(get).toHaveBeenCalledTimes(502);
+    expect(
+      get.mock.calls.filter(([params]) => params.path.user_id === "ou_sender_cap_0"),
+    ).toHaveLength(2);
+    expect(
+      get.mock.calls.filter(([params]) => params.path.user_id === "ou_sender_cap_500"),
+    ).toHaveLength(1);
+  });
 });

extensions/feishu/src/bot-sender-name.ts

@@ -1,4 +1,5 @@
 // Feishu plugin module implements bot sender name behavior.
+import { pruneMapToMaxSize } from "openclaw/plugin-sdk/collection-runtime";
 import {
   asDateTimestampMs,
   resolveExpiresAtMsFromDurationMs,
@@ -29,6 +30,7 @@ const FEISHU_SCOPE_CORRECTIONS: Record<string, string> = {
   "contact:contact.base:readonly": "contact:user.base:readonly",
 };
 const SENDER_NAME_TTL_MS = 10 * 60 * 1000;
+const SENDER_NAME_CACHE_MAX_SIZE = 500;
 const senderNameCache = new Map<string, { name: string; expireAt: number }>();
 
 function correctFeishuScopeInUrl(url: string): string {
@@ -117,6 +119,7 @@ export async function resolveFeishuSenderName(params: {
       const expireAt = resolveExpiresAtMsFromDurationMs(SENDER_NAME_TTL_MS);
       if (expireAt !== undefined) {
         senderNameCache.set(normalizedSenderId, { name, expireAt });
+        pruneMapToMaxSize(senderNameCache, SENDER_NAME_CACHE_MAX_SIZE);
       }
       return { name };
     }