Make workspace, agent, and schedule automation consistent (#2186)

* feat(workspaces): align agent and schedule automation

Make workspace identity the shared placement boundary for MCP and CLI, while caller identity determines parentage. Keep heartbeats minimal and cron-based without changing legacy rolling interval semantics.

* test(cli): expect canonical schedule cadence

* fix(automation): preserve workspace and schedule compatibility

* fix(automation): preserve compatibility edges

* fix(workspaces): align MCP lifecycle resolution

* fix(workspaces): preserve creation intent

* fix(workspaces): preserve branch and schedule identity

packages/app/src/schedules/schedule-form-model.test.ts

@@ -113,6 +113,26 @@ function scheduleOnHost(input: {
   };
 }
 
+function heartbeatOnHost(cadence: ScheduleSummary["cadence"]): TestSchedule {
+  return {
+    id: "heartbeat-host-a",
+    serverId: "host-a",
+    serverName: "Host A",
+    name: "Babysit",
+    prompt: "Check status",
+    cadence,
+    target: { type: "agent", agentId: "agent-1" },
+    status: "active",
+    createdAt: "2026-07-01T00:00:00.000Z",
+    updatedAt: "2026-07-01T00:00:00.000Z",
+    nextRunAt: "2026-07-02T00:00:00.000Z",
+    lastRunAt: null,
+    pausedAt: null,
+    expiresAt: null,
+    maxRuns: null,
+  };
+}
+
 function providerSnapshot(models: AgentModelDefinition[]): { entries: ProviderSnapshotEntry[] } {
   return {
     entries: [
@@ -389,7 +409,7 @@ describe("schedule form model", () => {
     });
   });
 
-  it("normalizes interval cadences to cron cadences when opening the form", () => {
+  it("displays a representable legacy interval without submitting a cadence change", () => {
     const form = open({
       mode: "edit",
       schedule: scheduleOnHost({
@@ -412,9 +432,12 @@ describe("schedule form model", () => {
       expression: "* * * * *",
       timezone: "Europe/Madrid",
     });
+    form.setName("Renamed without touching cadence");
+
+    expect(form.getState().submitCadence).toBeUndefined();
   });
 
-  it("preserves an edited schedule's interval cadence until the cadence changes", () => {
+  it("does not rewrite an unrepresentable legacy interval until cadence changes", () => {
     const originalCadence = { type: "every" as const, everyMs: 90 * 60_000 };
     const form = open({
       mode: "edit",
@@ -441,7 +464,7 @@ describe("schedule form model", () => {
 
     form.setName("Renamed without touching cadence");
 
-    expect(form.getState().submitCadence).toEqual(originalCadence);
+    expect(form.getState().submitCadence).toBeUndefined();
 
     form.setCadence({
       type: "cron",
@@ -456,6 +479,28 @@ describe("schedule form model", () => {
     });
   });
 
+  it("requires a cron choice before updating a legacy heartbeat", () => {
+    const form = open({
+      mode: "edit",
+      schedule: heartbeatOnHost({ type: "every", everyMs: 90 * 60_000 }),
+      defaults: {
+        serverId: null,
+        projectTargets: PROJECT_TARGETS,
+        preferences: {},
+        timezone: "Europe/Madrid",
+      },
+    });
+
+    expect(form.getState()).toMatchObject({ targetKind: "agent", canSubmit: false });
+
+    form.setCadence({ type: "cron", expression: "0 9 * * *", timezone: "Europe/Madrid" });
+
+    expect(form.getState()).toMatchObject({
+      submitCadence: { type: "cron", expression: "0 9 * * *", timezone: "Europe/Madrid" },
+      canSubmit: true,
+    });
+  });
+
   it("clears provider selection while resolving a different project", () => {
     const form = open({
       mode: "create",