fix(cron): migrate legacy string schedule and command jobs

src/cron/service.store.migration.test.ts

@@ -178,4 +178,47 @@ describe("cron store migration", () => {
     expect(schedule.kind).toBe("cron");
     expect(schedule.staggerMs).toBeUndefined();
   });
+
+  it("migrates legacy string schedules and command-only payloads (#18445)", async () => {
+    const store = await makeStorePath();
+    try {
+      await writeLegacyStore(store.storePath, {
+        id: "imessage-refresh",
+        name: "iMessage Refresh",
+        enabled: true,
+        createdAtMs: 1_700_000_000_000,
+        updatedAtMs: 1_700_000_000_000,
+        schedule: "0 */2 * * *",
+        command: "bash /tmp/imessage-refresh.sh",
+        timeout: 120,
+        state: {},
+      });
+
+      await migrateAndLoadFirstJob(store.storePath);
+      const loaded = await loadCronStore(store.storePath);
+      const migrated = loaded.jobs[0] as Record<string, unknown>;
+
+      expect(migrated.schedule).toEqual(
+        expect.objectContaining({
+          kind: "cron",
+          expr: "0 */2 * * *",
+        }),
+      );
+      expect(migrated.sessionTarget).toBe("main");
+      expect(migrated.wakeMode).toBe("now");
+      expect(migrated.payload).toEqual({
+        kind: "systemEvent",
+        text: "bash /tmp/imessage-refresh.sh",
+      });
+      expect("command" in migrated).toBe(false);
+      expect("timeout" in migrated).toBe(false);
+
+      const scheduleWarn = noopLogger.warn.mock.calls.find((args) =>
+        String(args[1] ?? "").includes("failed to compute next run for job (skipping)"),
+      );
+      expect(scheduleWarn).toBeUndefined();
+    } finally {
+      await store.cleanup();
+    }
+  });
 });

src/cron/service/store.ts

@@ -92,6 +92,7 @@ function normalizePayloadKind(payload: Record<string, unknown>) {
 function inferPayloadIfMissing(raw: Record<string, unknown>) {
   const message = typeof raw.message === "string" ? raw.message.trim() : "";
   const text = typeof raw.text === "string" ? raw.text.trim() : "";
+  const command = typeof raw.command === "string" ? raw.command.trim() : "";
   if (message) {
     raw.payload = { kind: "agentTurn", message };
     return true;
@@ -100,6 +101,10 @@ function inferPayloadIfMissing(raw: Record<string, unknown>) {
     raw.payload = { kind: "systemEvent", text };
     return true;
   }
+  if (command) {
+    raw.payload = { kind: "systemEvent", text: command };
+    return true;
+  }
   return false;
 }
 
@@ -209,6 +214,12 @@ function stripLegacyTopLevelFields(raw: Record<string, unknown>) {
   if ("provider" in raw) {
     delete raw.provider;
   }
+  if ("command" in raw) {
+    delete raw.command;
+  }
+  if ("timeout" in raw) {
+    delete raw.timeout;
+  }
 }
 
 async function getFileMtimeMs(path: string): Promise<number | null> {
@@ -262,6 +273,12 @@ export async function ensureLoaded(
       mutated = true;
     }
 
+    if (typeof raw.schedule === "string") {
+      const expr = raw.schedule.trim();
+      raw.schedule = { kind: "cron", expr };
+      mutated = true;
+    }
+
     const nameRaw = raw.name;
     if (typeof nameRaw !== "string" || nameRaw.trim().length === 0) {
       raw.name = inferLegacyName({
@@ -353,7 +370,9 @@ export async function ensureLoaded(
       "channel" in raw ||
       "to" in raw ||
       "bestEffortDeliver" in raw ||
-      "provider" in raw;
+      "provider" in raw ||
+      "command" in raw ||
+      "timeout" in raw;
     if (hadLegacyTopLevelFields) {
       stripLegacyTopLevelFields(raw);
       mutated = true;
@@ -469,6 +488,21 @@ export async function ensureLoaded(
 
     const payloadKind =
       payloadRecord && typeof payloadRecord.kind === "string" ? payloadRecord.kind : "";
+    const normalizedSessionTarget =
+      typeof raw.sessionTarget === "string" ? raw.sessionTarget.trim().toLowerCase() : "";
+    if (normalizedSessionTarget === "main" || normalizedSessionTarget === "isolated") {
+      if (raw.sessionTarget !== normalizedSessionTarget) {
+        raw.sessionTarget = normalizedSessionTarget;
+        mutated = true;
+      }
+    } else {
+      const inferredSessionTarget = payloadKind === "agentTurn" ? "isolated" : "main";
+      if (raw.sessionTarget !== inferredSessionTarget) {
+        raw.sessionTarget = inferredSessionTarget;
+        mutated = true;
+      }
+    }
+
     const sessionTarget =
       typeof raw.sessionTarget === "string" ? raw.sessionTarget.trim().toLowerCase() : "";
     const isIsolatedAgentTurn =