refactor: migrate subagent registry store v2

Co-authored-by: adam91holt <adam91holt@users.noreply.github.com>

src/agents/subagent-registry.persistence.test.ts

@@ -107,7 +107,7 @@ describe("subagent registry persistence", () => {
 
     const registryPath = path.join(tempStateDir, "subagents", "runs.json");
     const persisted = {
-      version: 1,
+      version: 2,
       runs: {
         "run-2": {
           runId: "run-2",
@@ -177,6 +177,9 @@ describe("subagent registry persistence", () => {
     expect(entry?.cleanupCompletedAt).toBe(9);
     expect(entry?.requesterOrigin?.channel).toBe("whatsapp");
     expect(entry?.requesterOrigin?.accountId).toBe("legacy-account");
+
+    const after = JSON.parse(await fs.readFile(registryPath, "utf8")) as { version?: number };
+    expect(after.version).toBe(2);
   });
 
   it("retries cleanup announce after a failed announce", async () => {
@@ -185,7 +188,7 @@ describe("subagent registry persistence", () => {
 
     const registryPath = path.join(tempStateDir, "subagents", "runs.json");
     const persisted = {
-      version: 1,
+      version: 2,
       runs: {
         "run-3": {
           runId: "run-3",

src/agents/subagent-registry.store.ts

@@ -5,14 +5,21 @@ import { loadJsonFile, saveJsonFile } from "../infra/json-file.js";
 import { normalizeDeliveryContext } from "../utils/delivery-context.js";
 import type { SubagentRunRecord } from "./subagent-registry.js";
 
-export type PersistedSubagentRegistryVersion = 1;
+export type PersistedSubagentRegistryVersion = 1 | 2;
 
-type PersistedSubagentRegistry = {
+type PersistedSubagentRegistryV1 = {
   version: 1;
+  runs: Record<string, LegacySubagentRunRecord>;
+};
+
+type PersistedSubagentRegistryV2 = {
+  version: 2;
   runs: Record<string, PersistedSubagentRunRecord>;
 };
 
-const REGISTRY_VERSION = 1 as const;
+type PersistedSubagentRegistry = PersistedSubagentRegistryV1 | PersistedSubagentRegistryV2;
+
+const REGISTRY_VERSION = 2 as const;
 
 type PersistedSubagentRunRecord = SubagentRunRecord;
 
@@ -32,22 +39,30 @@ export function loadSubagentRegistryFromDisk(): Map<string, SubagentRunRecord> {
   const raw = loadJsonFile(pathname);
   if (!raw || typeof raw !== "object") return new Map();
   const record = raw as Partial<PersistedSubagentRegistry>;
-  if (record.version !== REGISTRY_VERSION) return new Map();
+  if (record.version !== 1 && record.version !== 2) return new Map();
   const runsRaw = record.runs;
   if (!runsRaw || typeof runsRaw !== "object") return new Map();
   const out = new Map<string, SubagentRunRecord>();
+  const isLegacy = record.version === 1;
+  let migrated = false;
   for (const [runId, entry] of Object.entries(runsRaw)) {
     if (!entry || typeof entry !== "object") continue;
     const typed = entry as LegacySubagentRunRecord;
     if (!typed.runId || typeof typed.runId !== "string") continue;
     const legacyCompletedAt =
-      typeof typed.announceCompletedAt === "number" ? typed.announceCompletedAt : undefined;
+      isLegacy && typeof typed.announceCompletedAt === "number"
+        ? typed.announceCompletedAt
+        : undefined;
     const cleanupCompletedAt =
-      typeof typed.cleanupCompletedAt === "number" ? typed.cleanupCompletedAt : legacyCompletedAt;
+      typeof typed.cleanupCompletedAt === "number"
+        ? typed.cleanupCompletedAt
+        : legacyCompletedAt;
     const cleanupHandled =
       typeof typed.cleanupHandled === "boolean"
         ? typed.cleanupHandled
-        : Boolean(typed.announceHandled ?? cleanupCompletedAt);
+        : isLegacy
+          ? Boolean(typed.announceHandled ?? cleanupCompletedAt)
+          : undefined;
     const requesterOrigin = normalizeDeliveryContext(
       typed.requesterOrigin ?? {
         channel: typeof typed.requesterChannel === "string" ? typed.requesterChannel : undefined,
@@ -68,6 +83,14 @@ export function loadSubagentRegistryFromDisk(): Map<string, SubagentRunRecord> {
       cleanupCompletedAt,
       cleanupHandled,
     });
+    if (isLegacy) migrated = true;
+  }
+  if (migrated) {
+    try {
+      saveSubagentRegistryToDisk(out);
+    } catch {
+      // ignore migration write failures
+    }
   }
   return out;
 }