fix(discord): bound REST entity cache clocks

extensions/discord/src/internal/client.test.ts

@@ -342,6 +342,47 @@ describe("Client.deployCommands", () => {
     await client.fetchChannel("c1");
     expect(get).toHaveBeenCalledTimes(2);
   });
+
+  it("does not reuse cached REST objects while the process clock is invalid", async () => {
+    const client = createInternalTestClient();
+    const get = vi
+      .fn()
+      .mockResolvedValueOnce({ id: "c1", type: 0, name: "old" })
+      .mockResolvedValueOnce({ id: "c1", type: 0, name: "fresh" })
+      .mockResolvedValueOnce({ id: "c1", type: 0, name: "recovered" });
+    attachRestMock(client, { get });
+
+    const first = await client.fetchChannel("c1");
+    expect(first.name).toBe("old");
+
+    vi.spyOn(Date, "now").mockReturnValue(8_640_000_000_000_001);
+    const second = await client.fetchChannel("c1");
+
+    expect(second.name).toBe("fresh");
+
+    vi.mocked(Date.now).mockReturnValue(1_000);
+    const third = await client.fetchChannel("c1");
+
+    expect(third.name).toBe("recovered");
+    expect(get).toHaveBeenCalledTimes(3);
+  });
+
+  it("does not cache REST objects when the cache expiry would exceed the Date range", async () => {
+    const client = createInternalTestClient();
+    const get = vi
+      .fn()
+      .mockResolvedValueOnce({ id: "c1", type: 0, name: "first" })
+      .mockResolvedValueOnce({ id: "c1", type: 0, name: "second" });
+    attachRestMock(client, { get });
+    vi.spyOn(Date, "now").mockReturnValue(8_640_000_000_000_000);
+
+    const first = await client.fetchChannel("c1");
+    const second = await client.fetchChannel("c1");
+
+    expect(first.name).toBe("first");
+    expect(second.name).toBe("second");
+    expect(get).toHaveBeenCalledTimes(2);
+  });
 });
 
 describe("Client gateway event queue", () => {

extensions/discord/src/internal/entity-cache.ts

@@ -1,4 +1,8 @@
 import { GatewayDispatchEvents } from "discord-api-types/v10";
+import {
+  asDateTimestampMs,
+  resolveExpiresAtMsFromDurationMs,
+} from "openclaw/plugin-sdk/number-runtime";
 import { getChannel, getGuild, getGuildMember, getUser } from "./api.js";
 import type { RequestClient } from "./rest.js";
 import { Guild, GuildMember, User, channelFactory, type StructureClient } from "./structures.js";
@@ -79,15 +83,23 @@ export class DiscordEntityCache {
 
   private async fetchCached<T>(key: string, fetcher: () => Promise<T>): Promise<T> {
     const ttl = this.params.ttlMs ?? DEFAULT_REST_CACHE_TTL_MS;
+    const rawNow = Date.now();
+    const now = asDateTimestampMs(rawNow);
     if (ttl > 0) {
       const cached = this.entries.get(key) as CacheEntry<T> | undefined;
-      if (cached && cached.expiresAt > Date.now()) {
+      if (cached && now !== undefined && cached.expiresAt > now) {
         return cached.value;
       }
+      if (cached) {
+        this.entries.delete(key);
+      }
     }
     const value = await fetcher();
     if (ttl > 0) {
-      this.entries.set(key, { expiresAt: Date.now() + ttl, value });
+      const expiresAt = resolveExpiresAtMsFromDurationMs(ttl, { nowMs: rawNow });
+      if (expiresAt !== undefined) {
+        this.entries.set(key, { expiresAt, value });
+      }
     }
     return value;
   }