Session/Cron: harden maintenance and expand docs

src/config/zod-schema.cron-retention.test.ts

@@ -0,0 +1,40 @@
+import { describe, expect, it } from "vitest";
+import { OpenClawSchema } from "./zod-schema.js";
+
+describe("OpenClawSchema cron retention and run-log validation", () => {
+  it("accepts valid cron.sessionRetention and runLog values", () => {
+    expect(() =>
+      OpenClawSchema.parse({
+        cron: {
+          sessionRetention: "1h30m",
+          runLog: {
+            maxBytes: "5mb",
+            keepLines: 2500,
+          },
+        },
+      }),
+    ).not.toThrow();
+  });
+
+  it("rejects invalid cron.sessionRetention", () => {
+    expect(() =>
+      OpenClawSchema.parse({
+        cron: {
+          sessionRetention: "abc",
+        },
+      }),
+    ).toThrow(/sessionRetention|duration/i);
+  });
+
+  it("rejects invalid cron.runLog.maxBytes", () => {
+    expect(() =>
+      OpenClawSchema.parse({
+        cron: {
+          runLog: {
+            maxBytes: "wat",
+          },
+        },
+      }),
+    ).toThrow(/runLog|maxBytes|size/i);
+  });
+});