diff --git a/packages/protocol/src/paseo-config-schema.test.ts b/packages/protocol/src/paseo-config-schema.test.ts
index 49d5dd0169..a34f19178b 100644
--- a/packages/protocol/src/paseo-config-schema.test.ts
+++ b/packages/protocol/src/paseo-config-schema.test.ts
@@ -33,6 +33,23 @@ describe("paseo config schema", () => {
     });
   });
 
+  it("parses worktree config when only one lifecycle hook is present", () => {
+    expect(
+      PaseoConfigSchema.parse({
+        worktree: {
+          setup: "npm install",
+          terminals: [{ name: "Dev", command: "npm run dev" }],
+        },
+      }),
+    ).toEqual({
+      worktree: {
+        setup: ["npm install"],
+        teardown: [],
+        terminals: [{ name: "Dev", command: "npm run dev" }],
+      },
+    });
+  });
+
   it("parses all metadata generation instruction entries", () => {
     expect(
       PaseoConfigSchema.parse({
diff --git a/packages/protocol/src/paseo-config-schema.ts b/packages/protocol/src/paseo-config-schema.ts
index 534f24060f..5061940745 100644
--- a/packages/protocol/src/paseo-config-schema.ts
+++ b/packages/protocol/src/paseo-config-schema.ts
@@ -56,8 +56,8 @@ export const PaseoConfigRawSchema = z
   .passthrough();
 
 export const WorktreeConfigSchema = PaseoWorktreeConfigRawSchema.extend({
-  setup: z.unknown().transform(normalizeLifecycleCommands),
-  teardown: z.unknown().transform(normalizeLifecycleCommands),
+  setup: z.unknown().optional().transform(normalizeLifecycleCommands),
+  teardown: z.unknown().optional().transform(normalizeLifecycleCommands),
 })
   .passthrough()
   .catch({ setup: [], teardown: [] });
diff --git a/packages/protocol/src/schedule/types.test.ts b/packages/protocol/src/schedule/types.test.ts
index afeed7c90a..b89e0ee0f8 100644
--- a/packages/protocol/src/schedule/types.test.ts
+++ b/packages/protocol/src/schedule/types.test.ts
@@ -1,16 +1,16 @@
-import { describe, expect, test } from "vitest";
+import { describe, expect, it } from "vitest";
 
-import { ScheduleCadenceSchema } from "./types.js";
+import { ScheduleCadenceSchema, ScheduleRunSchema, ScheduleTargetSchema } from "./types.js";
 
-describe("ScheduleCadenceSchema", () => {
-  test("accepts existing UTC cron cadence without a time zone", () => {
+describe("schedule schemas", () => {
+  it("accepts existing UTC cron cadence without a time zone", () => {
     expect(ScheduleCadenceSchema.parse({ type: "cron", expression: "0 9 * * *" })).toEqual({
       type: "cron",
       expression: "0 9 * * *",
     });
   });
 
-  test("accepts timezone-aware cron cadence", () => {
+  it("accepts timezone-aware cron cadence", () => {
     expect(
       ScheduleCadenceSchema.parse({
         type: "cron",
@@ -23,4 +23,25 @@ describe("ScheduleCadenceSchema", () => {
       timezone: "America/New_York",
     });
   });
+
+  it("accepts legacy uuid-shaped agent ids with version 0", () => {
+    const legacyAgentId = "00000000-0000-0000-0000-000000000001";
+
+    expect(ScheduleTargetSchema.parse({ type: "agent", agentId: legacyAgentId })).toEqual({
+      type: "agent",
+      agentId: legacyAgentId,
+    });
+    expect(
+      ScheduleRunSchema.parse({
+        id: "run-1",
+        scheduledFor: "2026-01-01T00:00:00.000Z",
+        startedAt: "2026-01-01T00:00:00.000Z",
+        endedAt: null,
+        status: "succeeded",
+        agentId: legacyAgentId,
+        output: null,
+        error: null,
+      }).agentId,
+    ).toBe(legacyAgentId);
+  });
 });
diff --git a/packages/protocol/src/schedule/types.ts b/packages/protocol/src/schedule/types.ts
index 5ff7991930..02503009a4 100644
--- a/packages/protocol/src/schedule/types.ts
+++ b/packages/protocol/src/schedule/types.ts
@@ -17,10 +17,17 @@ export const ScheduleCadenceSchema = z.discriminatedUnion("type", [
 ]);
 export type ScheduleCadence = z.infer<typeof ScheduleCadenceSchema>;
 
+const LegacyUuidSchema = z
+  .string()
+  .regex(
+    /^[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}$/,
+    "Invalid UUID",
+  );
+
 export const ScheduleTargetSchema = z.discriminatedUnion("type", [
   z.object({
     type: z.literal("agent"),
-    agentId: z.string().uuid(),
+    agentId: LegacyUuidSchema,
   }),
   z.object({
     type: z.literal("new-agent"),
@@ -56,7 +63,7 @@ export const ScheduleRunSchema = z.object({
   startedAt: z.string(),
   endedAt: z.string().nullable(),
   status: z.enum(["running", "succeeded", "failed"]),
-  agentId: z.string().uuid().nullable(),
+  agentId: LegacyUuidSchema.nullable(),
   output: z.string().nullable(),
   error: z.string().nullable(),
 });