feat(automations): add per-host maintenance mode and recurring schedules (#1521)

plugins/automations/tests/backend/maintenance-scheduler.test.ts

@@ -0,0 +1,47 @@
+import { expect, it, vi } from "vitest";
+import { createScheduler } from "../../src/backend/scheduler.js";
+
+it("discards sustained breaches during maintenance but still runs scheduled work", async () => {
+  const run = vi.fn(async () => ({ runId: 1, status: "success" as const }));
+  const clearBreach = vi.fn(async () => {});
+  const repository = {
+    listDueSchedules: async () => [{ automationId: 2, intervalSeconds: 60 }],
+    markScheduleTicked: vi.fn(),
+    listOpenBreaches: async () => [
+      {
+        automationId: 1,
+        stateKey: "7:cpu.percent",
+        breachStartedAt: "2000-01-01T00:00:00Z",
+      },
+    ],
+    findById: async () => ({
+      id: 1,
+      userId: "alice",
+      enabled: true,
+      definition: JSON.stringify({
+        trigger: { kind: "metric_threshold", forSeconds: 60 },
+      }),
+    }),
+    clearBreach,
+    failStaleRunningRuns: vi.fn(),
+    pruneRunsOlderThan: async () => 0,
+  };
+  const maintaining = vi.fn(async () => true);
+  const scheduler = createScheduler({
+    repository: repository as never,
+    engine: { run },
+    log: { debug() {}, info() {}, warn() {}, error() {} },
+    reconcile: [],
+    isMaintaining: maintaining,
+  });
+  await scheduler.tick();
+  expect(maintaining).toHaveBeenCalledWith("alice", 7);
+  expect(clearBreach).toHaveBeenCalledWith(1, "7:cpu.percent");
+  expect(run).toHaveBeenCalledTimes(1);
+  expect(run).toHaveBeenCalledWith(
+    expect.objectContaining({
+      automationId: 2,
+      triggerType: "schedule",
+    }),
+  );
+});