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/cron/isolated-agent/session.ts

@@ -1,4 +1,5 @@
 import crypto from "node:crypto";
+import { clearBootstrapSnapshotOnSessionRollover } from "../../agents/bootstrap-cache.js";
 import type { OpenClawConfig } from "../../config/config.js";
 import {
   evaluateSessionFreshness,
@@ -58,6 +59,11 @@ export function resolveCronSession(params: {
     systemSent = false;
   }
 
+  clearBootstrapSnapshotOnSessionRollover({
+    sessionKey: params.sessionKey,
+    previousSessionId: isNewSession ? entry?.sessionId : undefined,
+  });
+
   const sessionEntry: SessionEntry = {
     // Preserve existing per-session overrides even when rolling to a new sessionId.
     ...entry,