fix(gateway): invalidate bootstrap cache on session rollover (openclaw#38535)

Verified:
- pnpm install --frozen-lockfile
- pnpm build
- pnpm check
- pnpm test:macmini

Co-authored-by: yfge <1186273+yfge@users.noreply.github.com>
Co-authored-by: Tak Hoffman <781889+Takhoffman@users.noreply.github.com>

src/auto-reply/reply/session.test.ts

@@ -2,6 +2,7 @@ import fs from "node:fs/promises";
 import os from "node:os";
 import path from "node:path";
 import { afterAll, afterEach, beforeAll, beforeEach, describe, expect, it, vi } from "vitest";
+import * as bootstrapCache from "../../agents/bootstrap-cache.js";
 import { buildModelAliasIndex } from "../../agents/model-selection.js";
 import type { OpenClawConfig } from "../../config/config.js";
 import type { SessionEntry } from "../../config/sessions.js";
@@ -850,11 +851,18 @@ describe("initSessionState RawBody", () => {
 });
 
 describe("initSessionState reset policy", () => {
+  let clearBootstrapSnapshotOnSessionRolloverSpy: ReturnType<typeof vi.spyOn>;
+
   beforeEach(() => {
     vi.useFakeTimers();
+    clearBootstrapSnapshotOnSessionRolloverSpy = vi.spyOn(
+      bootstrapCache,
+      "clearBootstrapSnapshotOnSessionRollover",
+    );
   });
 
   afterEach(() => {
+    clearBootstrapSnapshotOnSessionRolloverSpy.mockRestore();
     vi.useRealTimers();
   });
 
@@ -881,6 +889,10 @@ describe("initSessionState reset policy", () => {
 
     expect(result.isNewSession).toBe(true);
     expect(result.sessionId).not.toBe(existingSessionId);
+    expect(clearBootstrapSnapshotOnSessionRolloverSpy).toHaveBeenCalledWith({
+      sessionKey,
+      previousSessionId: existingSessionId,
+    });
   });
 
   it("treats sessions as stale before the daily reset when updated before yesterday's boundary", async () => {
@@ -1057,6 +1069,10 @@ describe("initSessionState reset policy", () => {
 
     expect(result.isNewSession).toBe(false);
     expect(result.sessionId).toBe(existingSessionId);
+    expect(clearBootstrapSnapshotOnSessionRolloverSpy).toHaveBeenCalledWith({
+      sessionKey,
+      previousSessionId: undefined,
+    });
   });
 });