import { randomUUID } from "node:crypto";
import { setTimeout as realDelay } from "node:timers/promises";
import type { Db } from "@paperclipai/db";
import {
  activityLog, applyPendingMigrations, reconcileDatabaseWork, agents, agentSessionGoalActions, agentTaskSessions, companies, createDb,
  completionContracts, EMBEDDED_POSTGRES_TEST_TIMEOUT_MS, heartbeatRuns, issueComments, issues, nativeRunFinalizations, nativeRunResults,
} from "@paperclipai/db";
import { eq, sql } from "drizzle-orm";
import { afterAll, afterEach, beforeAll, beforeEach, describe, expect, it, vi } from "vitest";
import { getEmbeddedPostgresTestSupport, startEmbeddedPostgresTestDatabase } from "../../__tests__/helpers/embedded-postgres.js";
import { resolveExternalTestDatabaseUrl } from "../../__tests__/helpers/external-test-database.js";
import { heartbeatService } from "../heartbeat.js";
import { instanceSettingsService } from "../instance-settings.js";
import { companyService } from "../companies.js";
import { issueService } from "../issues.js";
import { createDeliveryWorkCoordinator } from "../delivery-work-coordinator.js";
import { DELIVERY_QUEUES } from "../delivery-work-notifications.js";
import { registerScheduledWork } from "../scheduled-work.js";
import { idleWorkSnapshot, readTaskDrain, startTaskDrain, stopTaskDrain } from "../task-admission.js";
import { conflict } from "../../errors.js";
import { createHeartbeatRunPreparation } from "./run-preparation.js";
import { createHeartbeatRunState } from "./run-state.js";
import { createHeartbeatScheduling, type HeartbeatSchedulingDependencies } from "./scheduling.js";
import { readIdleSleepSafety } from "../idle-sleep-safety.js";
import { PaperclipRunnerToolAuthority } from "../native-runtime/paperclip-runner-tool-authority.js";
import { finalizeNativeRun } from "../native-runtime/native-run-finalizer.js";
import { nativeCompletionFeedback } from "../native-runtime/native-completion-feedback.js";
import type { PrpStructuredRunResult } from "../../vendor/paperclip-runner/index.js";

vi.mock("../live-events.js", () => ({ publishLiveEvent: vi.fn() }));

type Run = typeof heartbeatRuns.$inferSelect;
const now = new Date("2026-10-09T12:00:00.000Z");
const dueAt = new Date(now.getTime() - 60_000);
const admitted = { id: "admitted-run" } as Run;
const timerPolicy = {
  enabled: false, intervalSec: 60, wakeOnDemand: true, maxConcurrentRuns: 1,
  skipTimerWhenNoActionableWork: false, maxDailyRuns: null, maxDailyCostCents: null,
};

function callbacks(db: Db) {
  const state = createHeartbeatRunState(db);
  const preparation = createHeartbeatRunPreparation(db);
  return {
    getAgent: state.getAgent,
    getRun: state.getRun,
    toAgentOrgRow: preparation.toAgentOrgRow,
    groupAgentOrgRowsByCompany: preparation.groupAgentOrgRowsByCompany,
    issuesSvc: {
      listReviewAttention: vi.fn<HeartbeatSchedulingDependencies["issuesSvc"]["listReviewAttention"]>(async () => new Map()),
      create: vi.fn<HeartbeatSchedulingDependencies["issuesSvc"]["create"]>(),
    },
    enqueueWakeup: vi.fn<HeartbeatSchedulingDependencies["enqueueWakeup"]>(async () => admitted),
    scheduleBoundedRetryForRun: vi.fn<HeartbeatSchedulingDependencies["scheduleBoundedRetryForRun"]>(),
    getSchedulingSuppression: vi.fn(async () => ({ suppressed: false })),
    getWorktreeExecutionCutoff: vi.fn<HeartbeatSchedulingDependencies["getWorktreeExecutionCutoff"]>(async () => null),
    parseHeartbeatPolicy: vi.fn<HeartbeatSchedulingDependencies["parseHeartbeatPolicy"]>(() => timerPolicy),
    nextTimerHeartbeatAt: vi.fn<HeartbeatSchedulingDependencies["nextTimerHeartbeatAt"]>(async agent => new Date(agent.lastHeartbeatAt ?? agent.createdAt).getTime() + 60_000),
    claimDueTimerHeartbeat: vi.fn<HeartbeatSchedulingDependencies["claimDueTimerHeartbeat"]>(async () => ({ wasFirstHeartbeat: true })),
  } satisfies HeartbeatSchedulingDependencies;
}

describe("heartbeat scheduling module boundary", () => {
  function guardedDatabase() {
    const access = vi.fn(() => { throw new Error("Unexpected scheduling database access"); });
    return { db: new Proxy({}, { get: access }) as Db, access };
  }

  it("constructs without querying, admitting work, or starting timers", () => {
    const database = guardedDatabase();
    const deps = callbacks(database.db);
    createHeartbeatScheduling(database.db, deps);
    expect(database.access).not.toHaveBeenCalled();
    for (const callback of Object.values(deps)) if (vi.isMockFunction(callback)) expect(callback).not.toHaveBeenCalled();
  });

  it.each(["tickTimers", "tickAgentTimers", "tickIssueMonitors", "recoverActiveSessionGoals", "recoverPendingSessionGoalActions"] as const)(
    "honors suppression before %s reads or admits work", async (operation) => {
      const database = guardedDatabase();
      const deps = callbacks(database.db);
      deps.getSchedulingSuppression.mockResolvedValue({ suppressed: true });
      const result = await createHeartbeatScheduling(database.db, deps)[operation]();
      expect(Object.values(result).every(value => value === 0)).toBe(true);
      expect(database.access).not.toHaveBeenCalled();
      expect(deps.enqueueWakeup).not.toHaveBeenCalled();
      expect(deps.claimDueTimerHeartbeat).not.toHaveBeenCalled();
    },
  );
});

const external = resolveExternalTestDatabaseUrl("PAPERCLIP_HEARTBEAT_SCHEDULING_TEST_DATABASE_URL");
const postgres = external ? { supported: true } : await getEmbeddedPostgresTestSupport();
describe.skipIf(!postgres.supported)("heartbeat scheduling database boundary", () => {
  let database: Awaited<ReturnType<typeof startEmbeddedPostgresTestDatabase>> | undefined;
  let db: Db;
  beforeAll(async () => {
    if (external) await applyPendingMigrations(external);
    else database = await startEmbeddedPostgresTestDatabase("paperclip-heartbeat-scheduling-module");


    db = createDb(external ?? database!.connectionString, { idleTimeoutSeconds: 0, maxLifetimeSeconds: 0, connectTimeoutSeconds: 0 });
  }, EMBEDDED_POSTGRES_TEST_TIMEOUT_MS);
  afterAll(async () => {
    await db?.$client.end();
    await database?.cleanup();
  });
  beforeEach(async () => {
    await reconcileDatabaseWork(db, DELIVERY_QUEUES.issueMonitors);
    await db.execute(sql`truncate table companies restart identity cascade`);
  });

  async function fixture(adapterType = "paperclip_runner") {
    const [company] = await db.insert(companies).values({ name: "Scheduling", issuePrefix: "SCH" }).returning();
    const [agent] = await db.insert(agents).values({ companyId: company.id, name: "Scheduled agent", adapterType, createdAt: dueAt }).returning();
    const [issue] = await db.insert(issues).values({
      companyId: company.id, title: "Check deployment", status: "in_progress", assigneeAgentId: agent.id,
      monitorNextCheckAt: dueAt, monitorAttemptCount: 0, createdAt: dueAt,
      executionPolicy: { mode: "normal", commentRequired: true, stages: [], monitor: { nextCheckAt: dueAt.toISOString() } },
    }).returning();
    const deps = callbacks(db);
    return { company, agent, issue, deps, scheduler: createHeartbeatScheduling(db, deps) };
  }
  async function readIssue(id: string) {
    return db.select().from(issues).where(eq(issues.id, id)).then(rows => rows[0]!);
  }
  async function session(f: Awaited<ReturnType<typeof fixture>>, patch: Partial<typeof agentTaskSessions.$inferInsert> = {}) {
    return db.insert(agentTaskSessions).values({
      companyId: f.company.id, agentId: f.agent.id, adapterType: f.agent.adapterType, taskKey: f.issue.id,
      goalDesiredState: "active", goalStatus: "active", goalRevision: 7, ...patch,
    }).returning().then(rows => rows[0]!);
  }
  function enableTimer(deps: ReturnType<typeof callbacks>) {
    deps.parseHeartbeatPolicy.mockReturnValue({ ...timerPolicy, enabled: true });
    deps.parseHeartbeatPolicy.mockClear();
  }

  it("shares database monitor claims across scheduler instances", async () => {
    const f = await fixture();
    let release!: () => void;
    let entered!: () => void;
    const started = new Promise<void>(resolve => { entered = resolve; });
    const hold = new Promise<void>(resolve => { release = resolve; });
    f.deps.enqueueWakeup.mockImplementationOnce(async () => { entered(); await hold; return admitted; });
    const first = f.scheduler.tickTimers(now);
    try {
      await started;
      const second = createHeartbeatScheduling(db, f.deps);
      expect(await second.tickTimers(now)).toEqual({ checked: 0, enqueued: 0, skipped: 0 });
      await expect(second.triggerIssueMonitor(f.issue.id, { now })).rejects.toThrow("already in progress");
    } finally {
      release();
      await first;
    }
    expect(f.deps.enqueueWakeup).toHaveBeenCalledTimes(1);
    expect(await readIssue(f.issue.id)).toMatchObject({ monitorNextCheckAt: null, monitorAttemptCount: 1 });
  });

  it("restores the reported future deadline and claims monitor delivery exactly once", async () => {
    const f = await fixture();
    const at = new Date(now.getTime() + 600_000);
    await db.update(issues).set({ monitorNextCheckAt: at,
      executionPolicy: { monitor: { nextCheckAt: at.toISOString() } } }).where(eq(issues.id, f.issue.id));
    const ownerId = randomUUID();
    const hold = () => ({ ownerId, draining: true, activeRuns: 0, pendingWakes: 0,
      startedAt: now, expiresAt: new Date(now.getTime() + 120_000) });
    const report = await readIdleSleepSafety(db, hold, () => now.getTime(), ownerId,
      async () => "none", undefined, undefined, true, true);
    expect(report).toMatchObject({ version: 2, backgroundWork: "none", scheduledWake: {
      kind: "routines_and_issue_monitors", nextWakeAt: at.toISOString() } });
    expect(await f.scheduler.tickTimers(now)).toEqual({ checked: 0, enqueued: 0, skipped: 0 });
    expect(f.deps.enqueueWakeup).not.toHaveBeenCalled();
    const restored = createHeartbeatScheduling(db, f.deps);
    const deadline = new Date(report.scheduledWake!.nextWakeAt);
    await Promise.all([restored.tickTimers(deadline), f.scheduler.tickTimers(deadline)]);
    expect(f.deps.enqueueWakeup).toHaveBeenCalledOnce();
    expect(f.deps.enqueueWakeup).toHaveBeenCalledWith(f.agent.id, expect.objectContaining({ reason: "issue_monitor_due" }));
    expect(await readIssue(f.issue.id)).toMatchObject({ monitorNextCheckAt: null, monitorAttemptCount: 1 });
  });

  it("preserves a replacement schedule written during wake admission", async () => {
    const f = await fixture();
    const replacement = new Date(now.getTime() + 60_000);
    f.deps.enqueueWakeup.mockImplementationOnce(async () => {
      await db.update(issues).set({ monitorNextCheckAt: replacement, monitorWakeRequestedAt: null }).where(eq(issues.id, f.issue.id));
      return admitted;
    });
    expect(await f.scheduler.tickTimers(now)).toEqual({ checked: 1, enqueued: 1, skipped: 0 });
    expect(await readIssue(f.issue.id)).toMatchObject({ monitorNextCheckAt: replacement, monitorAttemptCount: 0 });
  });

  it("retains a deferred monitor and releases its claim for a later tick", async () => {
    const f = await fixture();
    f.deps.enqueueWakeup.mockResolvedValueOnce(null);
    expect(await f.scheduler.tickTimers(now)).toEqual({ checked: 1, enqueued: 0, skipped: 1 });
    expect(await readIssue(f.issue.id)).toMatchObject({ monitorNextCheckAt: dueAt, monitorWakeRequestedAt: null, monitorAttemptCount: 0 });
    expect(await f.scheduler.tickTimers(now)).toEqual({ checked: 1, enqueued: 1, skipped: 0 });
    const calls = f.deps.enqueueWakeup.mock.calls;
    expect(calls[0]![1]!.idempotencyKey).toBe(calls[1]![1]!.idempotencyKey);
    expect(calls[0]![1]!.issueStateGuard).toMatchObject({
      assigneeAgentId: f.agent.id, statuses: ["in_progress"], monitorNextCheckAt: dueAt.toISOString(), monitorWakeRequestedAt: now.toISOString(),
    });
  });

  it("keeps manual error recovery distinct from scheduled client-error handling", async () => {
    const f = await fixture();
    f.deps.enqueueWakeup.mockRejectedValue(conflict("Agent is paused"));
    await expect(f.scheduler.triggerIssueMonitor(f.issue.id, { now, actorType: "user", actorId: "board-user" })).rejects.toThrow("Agent is paused");
    expect(await readIssue(f.issue.id)).toMatchObject({ monitorNextCheckAt: dueAt, monitorWakeRequestedAt: null });
    expect(f.deps.enqueueWakeup).toHaveBeenLastCalledWith(f.agent.id, expect.objectContaining({
      source: "on_demand", requestedByActorType: "user", requestedByActorId: "board-user",
    }));
    expect(await f.scheduler.tickTimers(now)).toEqual({ checked: 1, enqueued: 0, skipped: 1 });
    expect(await readIssue(f.issue.id)).toMatchObject({ monitorNextCheckAt: null });
  });

  it("lets a human check a blocked task without resuming automatic checks", async () => {
    const f = await fixture();
    await db.update(issues).set({ status: "blocked" }).where(eq(issues.id, f.issue.id));
    expect(await f.scheduler.tickTimers(now)).toEqual({ checked: 0, enqueued: 0, skipped: 0 });
    expect(f.deps.enqueueWakeup).not.toHaveBeenCalled();
    await expect(f.scheduler.triggerIssueMonitor(f.issue.id, { now, actorType: "user", actorId: "board-user" }))
      .resolves.toMatchObject({ outcome: "triggered" });
    expect(f.deps.enqueueWakeup).toHaveBeenCalledExactlyOnceWith(f.agent.id, expect.objectContaining({
      source: "on_demand", requestedByActorType: "user", requestedByActorId: "board-user",
      issueStateGuard: expect.objectContaining({ statuses: ["blocked"], assigneeAgentId: f.agent.id }),
    }));
    expect(await readIssue(f.issue.id)).toMatchObject({ status: "blocked", monitorNextCheckAt: null, monitorAttemptCount: 1 });
  });

  it.each(["agent", "system"] as const)("does not let a %s check a blocked task", async (actorType) => {
    const f = await fixture();
    await db.update(issues).set({ status: "blocked" }).where(eq(issues.id, f.issue.id));
    await expect(f.scheduler.triggerIssueMonitor(f.issue.id, { now, actorType, actorId: "caller" })).rejects.toThrow();
    expect(f.deps.enqueueWakeup).not.toHaveBeenCalled();
    expect(await readIssue(f.issue.id)).toMatchObject({ status: "blocked", monitorNextCheckAt: dueAt, monitorWakeRequestedAt: null });
  });

  it("retains monitors after transient admission failures", async () => {
    const f = await fixture();
    f.deps.enqueueWakeup.mockRejectedValueOnce(new Error("Temporary admission failure"));
    await f.scheduler.tickTimers(now);
    expect(await readIssue(f.issue.id)).toMatchObject({ monitorNextCheckAt: dueAt, monitorWakeRequestedAt: null });
    expect(await f.scheduler.tickTimers(now)).toEqual({ checked: 1, enqueued: 1, skipped: 0 });
  });

  it("records bounded dispatch failure diagnostics while retaining the schedule", async () => {
    const f = await fixture();
    f.deps.enqueueWakeup.mockRejectedValue(new Error("PRIVATE_PROVIDER_FAILURE"));
    await f.scheduler.tickTimers(now);
    await f.scheduler.tickTimers(new Date(now.getTime() + 30_000));
    expect(await readIssue(f.issue.id)).toMatchObject({ monitorNextCheckAt: dueAt, monitorWakeRequestedAt: null, monitorAttemptCount: 0 });
    const events = await db.select().from(activityLog).where(eq(activityLog.entityId, f.issue.id));
    expect(events.filter(event => event.action === "issue.monitor_dispatch_failed")).toHaveLength(1);
    expect(events[0]?.details).toMatchObject({ reason: "monitor_dispatch_failed", nextCheckAt: dueAt.toISOString(), attemptCount: 0 });
    expect(JSON.stringify(events)).not.toContain("PRIVATE_PROVIDER_FAILURE");
  });

  it("repeats a persistent diagnostic after its bounded quiet window", async () => {
    const f = await fixture();
    f.deps.enqueueWakeup.mockResolvedValue(null);
    await f.scheduler.tickTimers(now);
    await f.scheduler.tickTimers(new Date(now.getTime() + 30_000));
    expect(await db.select().from(activityLog).where(eq(activityLog.entityId, f.issue.id))).toHaveLength(1);
    await db.update(activityLog).set({ createdAt: new Date(Date.now() - 6 * 60_000) }).where(eq(activityLog.entityId, f.issue.id));
    await f.scheduler.tickTimers(new Date(now.getTime() + 60_000));
    expect(await db.select().from(activityLog).where(eq(activityLog.entityId, f.issue.id))).toHaveLength(2);
    expect(await readIssue(f.issue.id)).toMatchObject({ monitorNextCheckAt: dueAt, monitorAttemptCount: 0 });
  });

  it("does not copy an unrecognized blocker cause into monitor activity", async () => {
    const f = await fixture();
    f.deps.enqueueWakeup.mockImplementationOnce(async (_agentId, options) => {
      options?.issueStateGuard?.onExecutionDeferred?.("PRIVATE_BLOCKER_CAUSE");
      return null;
    });
    await f.scheduler.tickTimers(now);
    const events = await db.select().from(activityLog).where(eq(activityLog.entityId, f.issue.id));
    expect(events).toMatchObject([{ action: "issue.monitor_deferred", details: { reason: "execution_reconciliation_required" } }]);
    expect(JSON.stringify(events)).not.toContain("PRIVATE_BLOCKER_CAUSE");
  });

  it("releases a monitor claim when diagnostic storage fails", async () => {
    const f = await fixture();
    await db.execute(sql`create function fail_monitor_diagnostic_test() returns trigger language plpgsql as $$
      begin if new.action = 'issue.monitor_deferred' then raise exception 'Synthetic diagnostic storage failure'; end if; return new; end; $$`);
    await db.execute(sql`create trigger fail_monitor_diagnostic_test before insert on activity_log
      for each row execute function fail_monitor_diagnostic_test()`);
    try {
      f.deps.enqueueWakeup.mockResolvedValueOnce(null);
      expect(await f.scheduler.tickTimers(now)).toEqual({ checked: 1, enqueued: 0, skipped: 1 });
      expect(await readIssue(f.issue.id)).toMatchObject({ monitorNextCheckAt: dueAt, monitorWakeRequestedAt: null, monitorAttemptCount: 0 });
      expect(await f.scheduler.tickTimers(now)).toEqual({ checked: 1, enqueued: 1, skipped: 0 });
    } finally {
      await db.execute(sql`drop trigger fail_monitor_diagnostic_test on activity_log`);
      await db.execute(sql`drop function fail_monitor_diagnostic_test()`);
    }
  });

  it("does not attach old dispatch diagnostics to a replacement monitor", async () => {
    const f = await fixture();
    const replacement = new Date(now.getTime() + 60_000);
    f.deps.enqueueWakeup.mockImplementationOnce(async () => {
      await db.update(issues).set({ monitorNextCheckAt: replacement, monitorWakeRequestedAt: null }).where(eq(issues.id, f.issue.id));
      return null;
    });
    await f.scheduler.tickTimers(now);
    expect(await readIssue(f.issue.id)).toMatchObject({ monitorNextCheckAt: replacement });
    expect(await db.select().from(activityLog).where(eq(activityLog.entityId, f.issue.id))).toHaveLength(0);
  });

  it("leaves monitors alone while a native run owns the issue", async () => {
    const f = await fixture();
    const [run] = await db.insert(heartbeatRuns).values({ companyId: f.company.id, agentId: f.agent.id, nativeIssueId: f.issue.id, runtimeMode: "native", status: "running", contextSnapshot: { issueId: f.issue.id } }).returning();
    expect(await f.scheduler.tickTimers(now)).toEqual({ checked: 0, enqueued: 0, skipped: 0 });
    expect(f.deps.enqueueWakeup).not.toHaveBeenCalled();
    await db.update(heartbeatRuns).set({ status: "succeeded" }).where(eq(heartbeatRuns.id, run!.id));
    expect(await f.scheduler.tickTimers(now)).toEqual({ checked: 1, enqueued: 1, skipped: 0 });
  });

  it("keeps a due monitor until a terminal native run finishes finalization", async () => {
    const f = await fixture();
    const [run] = await db.insert(heartbeatRuns).values({
      companyId: f.company.id, agentId: f.agent.id, nativeIssueId: f.issue.id,
      runtimeMode: "native", status: "succeeded", contextSnapshot: { issueId: f.issue.id },
    }).returning();
    await db.insert(nativeRunFinalizations).values({
      companyId: f.company.id, issueId: f.issue.id, runId: run!.id, phase: "retryable_failure",
    });
    expect(await f.scheduler.tickTimers(now)).toEqual({ checked: 0, enqueued: 0, skipped: 0 });
    await expect(f.scheduler.triggerIssueMonitor(f.issue.id, { now })).rejects.toThrow("waiting for the previous run to settle");
    expect(f.deps.enqueueWakeup).not.toHaveBeenCalled();
    expect(await readIssue(f.issue.id)).toMatchObject({ monitorNextCheckAt: dueAt, monitorWakeRequestedAt: null });
    await db.update(nativeRunFinalizations).set({ phase: "committed" }).where(eq(nativeRunFinalizations.runId, run!.id));
    expect(await f.scheduler.tickTimers(now)).toEqual({ checked: 1, enqueued: 1, skipped: 0 });
    expect(f.deps.enqueueWakeup).toHaveBeenCalledTimes(1);
  });

  it.each(["scheduled", "manual", "worker"] as const)("applies expired monitor recovery after workspace settlement without another turn (%s)", async (dispatch) => {
    const f = await fixture();
    const start = new Date();
    const nextCheckAt = new Date(start.getTime() + 60_000).toISOString();
    const timeoutAt = new Date(start.getTime() + 120_000).toISOString();
    const [contract] = await db.insert(completionContracts).values({
      companyId: f.company.id, issueId: f.issue.id, revision: 1,
      schemaVersion: "paperclip.completion-contract.v1", policyVersion: "test",
      risk: "standard", completionAuthority: "server_arbiter", incompleteCriteriaPolicy: "preserve_non_terminal",
      contractJson: { revision: "test", criteria: [] }, canonicalSha256: randomUUID(),
      createdByActorType: "system", createdByActorId: "test",
    }).returning();
    const [run] = await db.insert(heartbeatRuns).values({
      companyId: f.company.id, agentId: f.agent.id, nativeIssueId: f.issue.id,
      runtimeMode: "native", status: "running", completionContractId: contract!.id,
      contextSnapshot: { issueId: f.issue.id },
    }).returning();
    await db.update(issues).set({ executionRunId: run!.id, checkoutRunId: run!.id }).where(eq(issues.id, f.issue.id));
    const authority = new PaperclipRunnerToolAuthority(db, { companyId: f.company.id,
      issueId: f.issue.id, agentId: f.agent.id, runId: run!.id });
    await authority.execute({ tool: "set_task_monitor", callId: randomUUID(), arguments: {
      idempotencyKey: "expires-during-workspace-save",
      monitor: { nextCheckAt, timeoutAt, notes: "Check once saved", recoveryPolicy: "escalate_to_board" },
    } });
    const result: PrpStructuredRunResult = {
      schema: "paperclip.run_result.v1", reportedWorkDisposition: "yielded", summary: "Wait for the check.",
      completionClaim: { contractRevision: "test", objectiveSatisfied: false, criteria: [],
        remainingWork: [{ description: "Check after saving", blocksCompletion: true }] },
      continuation: { kind: "monitor", summary: "Wait for the saved check", idempotencyKey: "wait" },
      evidence: [], verification: [], attentionRequests: [], artifacts: [],
    };
    await expect(nativeCompletionFeedback(db, run!.id, result)).resolves.toContain("issue_monitor_due");
    const [saved] = await db.insert(nativeRunResults).values({
      companyId: f.company.id, issueId: f.issue.id, runId: run!.id, completionContractId: contract!.id,
      serverFingerprint: randomUUID(), canonicalSha256: randomUUID(), schemaStatus: "accepted",
      resultJson: { result, terminal: { schema: "paperclip.prp.terminal.v1", runTerminalState: "succeeded",
        turnTerminalState: "completed", reportedWorkDisposition: "yielded" } },
    }).returning();
    await db.update(heartbeatRuns).set({ status: "succeeded" }).where(eq(heartbeatRuns.id, run!.id));
    await db.insert(nativeRunFinalizations).values({ companyId: f.company.id, issueId: f.issue.id,
      runId: run!.id, phase: "result_persisted", resultId: saved!.id });
    await finalizeNativeRun({ db, runId: run!.id, workspaceFinalizeStatus: "failed" });
    const expiredAt = new Date(start.getTime() + 180_000);
    vi.useFakeTimers({ toFake: ["Date"] });
    vi.setSystemTime(expiredAt);
    let monitorWorker: ReturnType<typeof createDeliveryWorkCoordinator> | undefined;
    try {
      await expect(nativeCompletionFeedback(db, run!.id, result)).rejects.toThrow("persisted, eligible monitor");
      expect(await f.scheduler.tickTimers(expiredAt)).toEqual({ checked: 0, enqueued: 0, skipped: 0 });
      await expect(f.scheduler.triggerIssueMonitor(f.issue.id, { now: expiredAt })).rejects.toThrow("waiting for the previous run to settle");
      if (dispatch === "worker") {
        monitorWorker = createDeliveryWorkCoordinator({ owner: db, canRun: () => true, onError: error => { throw error; } });
        const workers = registerScheduledWork(monitorWorker, { retryMs: 1000, canRun: () => true,
          tickAgentTimers: async () => {}, nextAgentTimerAt: async () => null, tickRoutines: async () => {}, nextRoutineRunAt: async () => null,
          tickIssueMonitors: signal => f.scheduler.tickIssueMonitors(new Date(), () => !signal.aborted),
          nextIssueMonitorAt: () => f.scheduler.nextIssueMonitorAt(),
        });
        await Promise.all([workers.monitors.ready, workers.routines.ready, workers.timers.ready]);
        expect(monitorWorker.nextWakeAt()).toBeNull();
      }
      await finalizeNativeRun({ db, runId: run!.id, workspaceFinalizeStatus: "succeeded" });
      expect((await db.select().from(nativeRunFinalizations).where(eq(nativeRunFinalizations.runId, run!.id)))[0])
        .toMatchObject({ phase: "committed", failureCode: null });
      expect(await readIssue(f.issue.id)).toMatchObject({ executionRunId: null, checkoutRunId: null,
        monitorNextCheckAt: new Date(nextCheckAt) });
      if (dispatch === "manual") await f.scheduler.triggerIssueMonitor(f.issue.id, { now: expiredAt });
      else if (dispatch === "worker") {
        vi.setSystemTime(new Date(expiredAt.getTime() + 2000));
        await vi.waitFor(async () => expect((await readIssue(f.issue.id)).monitorNextCheckAt).toBeNull(), { timeout: 5000 });
      } else await f.scheduler.tickTimers(expiredAt);
      expect(await readIssue(f.issue.id)).toMatchObject({ monitorNextCheckAt: null,
        executionState: { monitor: { status: "cleared", clearReason: "timeout_exceeded" } } });
      expect(await db.select().from(issueComments).where(eq(issueComments.issueId, f.issue.id))).toHaveLength(1);
      await finalizeNativeRun({ db, runId: run!.id, workspaceFinalizeStatus: "succeeded" });
      await f.scheduler.tickTimers(expiredAt);
      expect(await db.select().from(issueComments).where(eq(issueComments.issueId, f.issue.id))).toHaveLength(1);
      expect(f.deps.enqueueWakeup).not.toHaveBeenCalled();
      expect((await db.select().from(nativeRunResults).where(eq(nativeRunResults.id, saved!.id)))[0]!.resultJson).toEqual(saved!.resultJson);
    } finally {
      await monitorWorker?.stop();
      vi.useRealTimers();
    }
  });

  it("skips archived companies for both timers and monitors", async () => {
    const f = await fixture();
    enableTimer(f.deps);
    await db.update(companies).set({ status: "archived" }).where(eq(companies.id, f.company.id));
    expect(await f.scheduler.tickTimers(now)).toEqual({ checked: 0, enqueued: 0, skipped: 0 });
    expect(f.deps.claimDueTimerHeartbeat).not.toHaveBeenCalled();
    expect(f.deps.enqueueWakeup).not.toHaveBeenCalled();
    expect(await readIssue(f.issue.id)).toMatchObject({ monitorNextCheckAt: dueAt });
  });

  it("combines timer and monitor counts and passes the timer claim receipt to admission", async () => {
    const f = await fixture("process");
    enableTimer(f.deps);
    expect(await f.scheduler.tickTimers(now)).toEqual({ checked: 2, enqueued: 2, skipped: 0 });
    expect(f.deps.claimDueTimerHeartbeat).toHaveBeenCalledWith(expect.objectContaining({ id: f.agent.id }), now, 60);
    expect(f.deps.enqueueWakeup).toHaveBeenCalledWith(f.agent.id, expect.objectContaining({
      source: "timer", reason: "heartbeat_timer", contextSnapshot: expect.objectContaining({ timerClaimWasFirstHeartbeat: true }),
    }));
  });

  it("does not enqueue a timer after losing its due claim", async () => {
    const f = await fixture("process");
    enableTimer(f.deps);
    await db.update(issues).set({ monitorNextCheckAt: null }).where(eq(issues.id, f.issue.id));
    f.deps.claimDueTimerHeartbeat.mockResolvedValue(null);
    expect(await f.scheduler.tickTimers(now)).toEqual({ checked: 1, enqueued: 0, skipped: 0 });
    expect(f.deps.enqueueWakeup).not.toHaveBeenCalled();
  });

  it("enforces worktree cutoffs and agent invokability before timer claims", async () => {
    const f = await fixture("process");
    enableTimer(f.deps);
    await db.update(issues).set({ monitorNextCheckAt: null }).where(eq(issues.id, f.issue.id));
    f.deps.getWorktreeExecutionCutoff.mockResolvedValue(now);
    await f.scheduler.tickTimers(now);
    expect(f.deps.claimDueTimerHeartbeat).not.toHaveBeenCalled();
    await db.update(issues).set({ createdAt: now }).where(eq(issues.id, f.issue.id));
    await db.update(agents).set({ status: "paused" }).where(eq(agents.id, f.agent.id));
    await f.scheduler.tickTimers(now);
    expect(f.deps.claimDueTimerHeartbeat).not.toHaveBeenCalled();
    await db.update(agents).set({ status: "idle" }).where(eq(agents.id, f.agent.id));
    expect(await f.scheduler.tickTimers(now)).toEqual({ checked: 1, enqueued: 1, skipped: 0 });
  });

  it.each([
    { provider: "codex" }, { provider: "acpx", acpxAgent: "antigravity" }, { provider: "openai_dot" },
  ])("leaves task-required $provider agents idle between tasks while preserving their due task monitor", async adapterConfig => {
    const f = await fixture();
    await db.update(agents).set({ adapterConfig }).where(eq(agents.id, f.agent.id));
    enableTimer(f.deps);
    // Only the task-bound monitor is admitted, even though the generic timer is due.
    expect(await f.scheduler.tickTimers(now)).toEqual({ checked: 1, enqueued: 1, skipped: 0 });
    expect(f.deps.claimDueTimerHeartbeat).not.toHaveBeenCalled();
    expect(f.deps.enqueueWakeup).toHaveBeenCalledExactlyOnceWith(f.agent.id,
      expect.objectContaining({ contextSnapshot: expect.objectContaining({ issueId: f.issue.id }) }));
    expect((await db.select().from(agents).where(eq(agents.id, f.agent.id)))[0])
      .toMatchObject({ status: f.agent.status, lastHeartbeatAt: f.agent.lastHeartbeatAt });
    f.deps.enqueueWakeup.mockClear();
    expect(await f.scheduler.tickTimers(new Date(now.getTime() + 120_000))).toEqual({ checked: 0, enqueued: 0, skipped: 0 });
    expect(f.deps.enqueueWakeup).not.toHaveBeenCalled();
    expect(f.deps.claimDueTimerHeartbeat).not.toHaveBeenCalled();
  });

  it("recovers active goals with stable revision-based admission keys", async () => {
    const f = await fixture();
    const active = await session(f);
    expect(await f.scheduler.recoverActiveSessionGoals()).toEqual({ scanned: 1, enqueued: 1 });
    expect(f.deps.enqueueWakeup).toHaveBeenCalledWith(f.agent.id, expect.objectContaining({
      idempotencyKey: `goal_recovery:${active.id}:7`, contextSnapshot: { issueId: f.issue.id, taskKey: f.issue.id, resumeSessionGoalHeartbeat: true, skipIssueComment: true },
    }));
    f.deps.enqueueWakeup.mockResolvedValueOnce(null);
    expect(await f.scheduler.recoverActiveSessionGoals()).toEqual({ scanned: 1, enqueued: 0 });
    expect(f.deps.enqueueWakeup.mock.calls[1]![1]!.idempotencyKey).toBe(f.deps.enqueueWakeup.mock.calls[0]![1]!.idempotencyKey);
    await db.update(issues).set({ status: "done" }).where(eq(issues.id, f.issue.id));
    expect(await f.scheduler.recoverActiveSessionGoals()).toEqual({ scanned: 0, enqueued: 0 });
  });

  it("excludes goals after reassignment or with a mismatched company binding", async () => {
    const f = await fixture();
    const [other] = await db.insert(companies).values({ name: "Other company", issuePrefix: "OTH" }).returning();
    const active = await session(f, { companyId: other!.id });
    expect(await f.scheduler.recoverActiveSessionGoals()).toEqual({ scanned: 0, enqueued: 0 });
    await db.update(agentTaskSessions).set({ companyId: f.company.id }).where(eq(agentTaskSessions.id, active.id));
    await db.update(issues).set({ assigneeAgentId: null }).where(eq(issues.id, f.issue.id));
    expect(await f.scheduler.recoverActiveSessionGoals()).toEqual({ scanned: 0, enqueued: 0 });
    expect(f.deps.enqueueWakeup).not.toHaveBeenCalled();
  });

  it.each(["queued", "scheduled_retry", "running"])("deduplicates a pending goal action against a %s run", async status => {
    const f = await fixture();
    const active = await session(f);
    const requestId = randomUUID();
    const [action] = await db.insert(agentSessionGoalActions).values({ companyId: f.company.id, sessionId: active.id, requestId, action: "pause", payloadJson: { requestId, action: "pause" } }).returning();
    const [run] = await db.insert(heartbeatRuns).values({ companyId: f.company.id, agentId: f.agent.id, status, contextSnapshot: { goalControlRequestId: requestId } }).returning();
    expect(await f.scheduler.recoverPendingSessionGoalActions()).toEqual({ scanned: 1, enqueued: 0, alreadyQueued: 1, invalid: 0 });
    expect(f.deps.enqueueWakeup).not.toHaveBeenCalled();
    await db.update(heartbeatRuns).set({ status: "succeeded" }).where(eq(heartbeatRuns.id, run!.id));
    await db.update(issues).set({ status: "done" }).where(eq(issues.id, f.issue.id));
    expect(await f.scheduler.recoverPendingSessionGoalActions()).toEqual({ scanned: 1, enqueued: 1, alreadyQueued: 0, invalid: 0 });
    expect(f.deps.enqueueWakeup).toHaveBeenCalledWith(f.agent.id, expect.objectContaining({
      idempotencyKey: `goal_control_recovery:${action!.id}`, contextSnapshot: expect.objectContaining({ resumeIntent: true, goalControlRequestId: requestId, runnerGoalControl: { requestId, action: "pause" } }),
    }));
  });

  it("persists invalid goal actions as failures without wake admission", async () => {
    const f = await fixture();
    const active = await session(f);
    const [action] = await db.insert(agentSessionGoalActions).values({ companyId: f.company.id, sessionId: active.id, requestId: "expected", action: "pause", payloadJson: { requestId: "different", action: "pause" } }).returning();
    expect(await f.scheduler.recoverPendingSessionGoalActions()).toEqual({ scanned: 1, enqueued: 0, alreadyQueued: 0, invalid: 1 });
    expect(f.deps.enqueueWakeup).not.toHaveBeenCalled();
    const failed = await db.select().from(agentSessionGoalActions).where(eq(agentSessionGoalActions.id, action!.id));
    expect(failed[0]).toMatchObject({ status: "failed", error: "session_goal_control_payload_invalid" });
  });
  describe("issue monitor deadline lifecycle", () => {
    let coordinator: ReturnType<typeof createDeliveryWorkCoordinator> | undefined;
    let draining = false;
    const errors: unknown[] = [];
    beforeEach(() => {
      draining = false; errors.length = 0;
      vi.useFakeTimers({ toFake: ["Date", "setTimeout", "clearTimeout"], shouldAdvanceTime: true });
      vi.setSystemTime(now);
    });
    afterEach(async () => {
      await coordinator?.stop(); coordinator = undefined;
      stopTaskDrain();
      vi.useRealTimers(); vi.restoreAllMocks();
      expect(errors).toEqual([]);
    });
    async function start(f: { scheduler: Pick<ReturnType<typeof createHeartbeatScheduling>, "tickIssueMonitors" | "nextIssueMonitorAt"> }) {
      coordinator = createDeliveryWorkCoordinator({ owner: db, canRun: () => !draining,
        canReconcile: () => true, onError: error => errors.push(error) });
      const workers = registerScheduledWork(coordinator, { retryMs: 30_000, canRun: () => !draining,
        tickAgentTimers: async () => {}, nextAgentTimerAt: async () => null, tickRoutines: async () => {}, nextRoutineRunAt: async () => null,
        tickIssueMonitors: signal => f.scheduler.tickIssueMonitors(new Date(), () => !draining && !signal.aborted),
        nextIssueMonitorAt: () => f.scheduler.nextIssueMonitorAt(),
      });
      await Promise.all([workers.monitors.ready, workers.routines.ready, workers.timers.ready]);
      return workers;
    }
    async function advance(milliseconds: number) {


      for (let remaining = milliseconds; remaining > 0; remaining -= 1000) {
        await vi.advanceTimersByTimeAsync(Math.min(1000, remaining));
        await realDelay(5);
      }
    }
    async function quiet() {

      await advance(31_000);
      if (!draining) await vi.waitFor(() => {
        expect(idleWorkSnapshot().active).toBe(0);
        expect(coordinator!.nextWakeAt()).toBeNull();
      }, { timeout: 5000 });
      const select = vi.spyOn(db, "select"), execute = vi.spyOn(db, "execute"), transaction = vi.spyOn(db, "transaction");
      try {
        await advance(120_000);
        expect(select).not.toHaveBeenCalled(); expect(execute).not.toHaveBeenCalled(); expect(transaction).not.toHaveBeenCalled();
      } finally { select.mockRestore(); execute.mockRestore(); transaction.mockRestore(); }
    }
    async function schedule(f: Awaited<ReturnType<typeof fixture>>, at: Date, owner = db) {
      return issueService(owner).update(f.issue.id, { monitorNextCheckAt: at, executionPolicy: {
        mode: "normal", commentRequired: true, stages: [], monitor: { nextCheckAt: at.toISOString() },
      } });
    }

    it.each(["commit", "rollback"] as const)("reconciles worktree activation only after its outer transaction %s", async outcome => {
      const f = await fixture();
      const deadline = now.getTime() + 3_600_000;
      await db.update(issues).set({ monitorNextCheckAt: new Date(deadline),
        executionPolicy: { monitor: { nextCheckAt: new Date(deadline).toISOString() } } }).where(eq(issues.id, f.issue.id));
      const runtimeEnv = { PAPERCLIP_IN_WORKTREE: "true", PAPERCLIP_INSTANCE_ID: "monitor-activation-fixture" };
      const settings = instanceSettingsService(db, { runtimeEnv });
      await settings.updateExperimental({ enableWorktreeRunExecution: false });
      const heartbeat = heartbeatService(db, { runtimeEnv });
      await start({ scheduler: heartbeat });
      await quiet();
      let release!: () => void, entered!: () => void;
      const held = new Promise<void>(resolve => { release = resolve; });
      const ready = new Promise<void>(resolve => { entered = resolve; });
      const writing = db.transaction(async tx => {
        await instanceSettingsService(tx as unknown as Db, { runtimeEnv }).updateExperimental({ enableWorktreeRunExecution: true });
        entered();
        await held;
        if (outcome === "rollback") throw new Error("rollback activation");
      }).then(() => undefined, error => error as Error);
      try {
        await ready;
        await advance(31_000);


        expect(await heartbeat.nextIssueMonitorAt()).toBeNull();
        expect((await readIssue(f.issue.id)).monitorAttemptCount).toBe(0);
      } finally { release(); }
      const error = await writing;
      if (outcome === "rollback") {
        expect(error?.message).toBe("rollback activation");
        await quiet();
      } else {
        expect(error).toBeUndefined();
        await advance(31_000);
        await vi.waitFor(() => expect(coordinator!.nextWakeAt()).toBe(deadline), { timeout: 5000 });
        await settings.updateExperimental({ enableWorktreeRunExecution: false });
        await quiet();
      }
      expect(await readIssue(f.issue.id)).toMatchObject({ monitorNextCheckAt: new Date(deadline), monitorAttemptCount: 0 });
    });

    it("uses fresh worktree activation for immediate monitor deadline inspection", async () => {
      const f = await fixture();
      const runtimeEnv = { PAPERCLIP_IN_WORKTREE: "true", PAPERCLIP_INSTANCE_ID: "monitor-fresh-fixture" };
      const settings = instanceSettingsService(db, { runtimeEnv });
      await settings.updateExperimental({ enableWorktreeRunExecution: false });
      const heartbeat = heartbeatService(db, { runtimeEnv });
      expect(await heartbeat.nextIssueMonitorAt()).toBeNull();
      await settings.updateExperimental({ enableWorktreeRunExecution: true });
      expect(await heartbeat.nextIssueMonitorAt()).toBe(dueAt.getTime());
      await settings.updateExperimental({ enableWorktreeRunExecution: false });
      expect(await heartbeat.nextIssueMonitorAt()).toBeNull();
      expect(await heartbeat.tickIssueMonitors()).toEqual({ checked: 0, triggered: 0, skipped: 0 });
      expect((await readIssue(f.issue.id)).monitorNextCheckAt).toEqual(dueAt);
    });

    it("stays quiet with retained history, then a real producer schedules and consumes its deadline", async () => {
      const f = await fixture();
      await db.update(issues).set({ monitorNextCheckAt: null, executionPolicy: null }).where(eq(issues.id, f.issue.id));
      await db.insert(issues).values({ companyId: f.company.id, title: "Old monitor", status: "done",
        assigneeAgentId: f.agent.id, monitorNextCheckAt: dueAt });
      await start(f); await quiet();
      expect(coordinator!.nextWakeAt()).toBeNull();
      const at = new Date(Date.now() + 10_000);
      await schedule(f, at);
      await vi.waitFor(() => expect(coordinator!.nextWakeAt()).toBe(at.getTime()));
      await advance(10_000);
      await vi.waitFor(async () => expect((await readIssue(f.issue.id)).monitorNextCheckAt).toBeNull());
      expect(f.deps.enqueueWakeup).toHaveBeenCalledOnce();
      await quiet(); expect(coordinator!.nextWakeAt()).toBeNull();
    });

    it.each([false, true])("waits for the outer producer transaction and handles rollback=%s", async rollback => {
      const f = await fixture();
      await db.update(issues).set({ monitorNextCheckAt: null, executionPolicy: null }).where(eq(issues.id, f.issue.id));
      await start(f);
      let release!: () => void, entered!: () => void;
      const hold = new Promise<void>(r => { release = r; });
      const written = new Promise<void>(r => { entered = r; });
      const at = new Date(Date.now() + 60_000);
      const writing = db.transaction(async tx => {
        await schedule(f, at, tx as unknown as Db);
        entered(); await hold;
        if (rollback) throw new Error("rollback monitor");
      }).catch(error => { if (!rollback) throw error; expect(error.message).toBe("rollback monitor"); });
      try {
        await written;
        await advance(2000);
        expect(f.deps.enqueueWakeup).not.toHaveBeenCalled();
        expect((await readIssue(f.issue.id)).monitorNextCheckAt).toBeNull();
      } finally { release(); await writing; }
      if (rollback) {
        await advance(30_000);
        await vi.waitFor(() => expect(coordinator!.nextWakeAt()).toBeNull());
        await quiet();
      }
      else {
        await advance(30_000);
        await vi.waitFor(() => expect(coordinator!.nextWakeAt()).toBe(at.getTime()));
      }
    });

    it.each(["stop", "expiry"] as const)("resumes a saved monitor after maintenance drain %s", async end => {
      const f = await fixture();
      const at = new Date(Date.now() + 10_000);
      await db.update(issues).set({ monitorNextCheckAt: at }).where(eq(issues.id, f.issue.id));
      f.deps.getSchedulingSuppression.mockImplementation(async () => ({ suppressed: readTaskDrain(new Date()) !== null }));
      await start(f);
      startTaskDrain({ ttlMs: end === "expiry" ? 90_000 : null });
      const select = vi.spyOn(db, "select");
      try {
        await advance(60_000);
        expect(f.deps.enqueueWakeup).not.toHaveBeenCalled();
        expect(select).not.toHaveBeenCalled();
        expect(coordinator!.nextWakeAt()).not.toBeNull();
      } finally { select.mockRestore(); }
      if (end === "stop") stopTaskDrain();
      await advance(60_000);
      await vi.waitFor(async () => expect((await readIssue(f.issue.id)).monitorNextCheckAt).toBeNull());
      expect(f.deps.enqueueWakeup).toHaveBeenCalledOnce();
      await quiet();
    });

    it("retains a first producer during drain without passive SQL, then resumes", async () => {
      const f = await fixture();
      await db.update(issues).set({ monitorNextCheckAt: null, executionPolicy: null }).where(eq(issues.id, f.issue.id));
      await start(f); draining = true;
      await schedule(f, new Date(Date.now() + 10_000));
      await quiet(); expect(f.deps.enqueueWakeup).not.toHaveBeenCalled();
      draining = false;
      await advance(30_000);
      await vi.waitFor(async () => expect((await readIssue(f.issue.id)).monitorNextCheckAt).toBeNull());
      expect(f.deps.enqueueWakeup).toHaveBeenCalledOnce();
      await quiet();
    });

    it("backs off a deferred admission and disarms after the retry succeeds", async () => {
      const f = await fixture(); f.deps.enqueueWakeup.mockResolvedValueOnce(null);
      await start(f);
      expect(f.deps.enqueueWakeup).toHaveBeenCalledOnce();
      await advance(5000);
      expect(f.deps.enqueueWakeup).toHaveBeenCalledOnce();
      expect(coordinator!.nextWakeAt()).not.toBeNull();
      await advance(30_000);
      await vi.waitFor(async () => expect((await readIssue(f.issue.id)).monitorNextCheckAt).toBeNull());
      expect(f.deps.enqueueWakeup).toHaveBeenCalledTimes(2);
      await quiet();
    });

    it("retains the overdue remainder of a capped pass until the next bounded drain", async () => {
      const f = await fixture();
      await db.insert(issues).values(Array.from({ length: 50 }, (_, index) => ({
        companyId: f.company.id, title: `Due monitor ${index}`, status: "in_progress", assigneeAgentId: f.agent.id,
        monitorNextCheckAt: dueAt, executionPolicy: f.issue.executionPolicy,
      })));
      await start(f);
      expect(f.deps.enqueueWakeup).toHaveBeenCalledTimes(50);
      expect(await f.scheduler.nextIssueMonitorAt()).toBe(dueAt.getTime());
      await advance(30_000);
      await vi.waitFor(() => expect(f.deps.enqueueWakeup).toHaveBeenCalledTimes(51));
      await quiet();
      expect(await f.scheduler.nextIssueMonitorAt()).toBeNull();
    }, 30_000);

    it("replaces an earlier deadline and cancels it through the ordinary issue producer", async () => {
      const f = await fixture();
      await db.update(issues).set({ monitorNextCheckAt: null, executionPolicy: null }).where(eq(issues.id, f.issue.id));
      await start(f);
      const later = new Date(Date.now() + 600_000);
      await schedule(f, later);
      await advance(30_000);
      await vi.waitFor(() => expect(coordinator!.nextWakeAt()).toBe(later.getTime()), { timeout: 5000 });
      const earlier = new Date(Date.now() + 60_000);
      await schedule(f, earlier);
      await advance(30_000);
      await vi.waitFor(() => expect(coordinator!.nextWakeAt()).toBe(earlier.getTime()), { timeout: 5000 });
      await issueService(db).update(f.issue.id, { monitorNextCheckAt: null, executionPolicy: null });
      await quiet();
      await advance(600_000);
      expect(f.deps.enqueueWakeup).not.toHaveBeenCalled();
    });

    it("reconstructs a claim deadline and respects its strict five-minute fence", async () => {
      const f = await fixture();
      const claimedAt = new Date();
      await db.update(issues).set({ monitorWakeRequestedAt: claimedAt }).where(eq(issues.id, f.issue.id));
      expect(await f.scheduler.nextIssueMonitorAt()).toBe(claimedAt.getTime() + 300_001);
      expect(await f.scheduler.tickIssueMonitors(new Date(claimedAt.getTime() + 300_000))).toMatchObject({ triggered: 0 });
      await start(f);
      expect(coordinator!.nextWakeAt()).toBe(claimedAt.getTime() + 300_001);
      await advance(300_001);
      await vi.waitFor(async () => expect((await readIssue(f.issue.id)).monitorNextCheckAt).toBeNull());
      expect(f.deps.enqueueWakeup).toHaveBeenCalledOnce();
      await quiet();
    });

    it("disarms while the company is paused and reactivates on its committed resume", async () => {
      const f = await fixture();
      await companyService(db).update(f.company.id, { status: "paused" });
      await start(f); await quiet();
      expect(coordinator!.nextWakeAt()).toBeNull();
      await companyService(db).update(f.company.id, { status: "active" });
      await vi.waitFor(async () => expect((await readIssue(f.issue.id)).monitorNextCheckAt).toBeNull());
      expect(f.deps.enqueueWakeup).toHaveBeenCalledOnce();
      await quiet();
    });

    it("bounds global scans during repeated ordinary checkout and release writes", async () => {
      const f = await fixture();
      const at = new Date(Date.now() + 300_000);
      await db.update(issues).set({ status: "todo", monitorNextCheckAt: at }).where(eq(issues.id, f.issue.id));
      const next = vi.spyOn(f.scheduler, "nextIssueMonitorAt");
      const tick = vi.spyOn(f.scheduler, "tickIssueMonitors");
      await start(f);
      const service = issueService(db);
      for (let i = 0; i < 12; i++) {
        await service.checkout(f.issue.id, f.agent.id, ["todo"], null);
        await service.release(f.issue.id, f.agent.id, null);
        await advance(2000);
      }
      expect(next).toHaveBeenCalledOnce();
      expect(tick).toHaveBeenCalledOnce();
      await service.checkout(f.issue.id, f.agent.id, ["todo"], null);
      await advance(6000);
      await vi.waitFor(() => expect(next).toHaveBeenCalledTimes(2));
      expect(tick).toHaveBeenCalledTimes(2);
      await vi.waitFor(() => expect(coordinator!.nextWakeAt()).toBe(at.getTime()));
      expect(f.deps.enqueueWakeup).not.toHaveBeenCalled();
    });

    it("checkout reactivates a retained monitor on a formerly ineligible task", async () => {
      const f = await fixture();
      await db.update(issues).set({ status: "todo" }).where(eq(issues.id, f.issue.id));
      await start(f); await quiet();
      expect(coordinator!.nextWakeAt()).toBeNull();
      await issueService(db).checkout(f.issue.id, f.agent.id, ["todo"], null);
      await vi.waitFor(async () => expect((await readIssue(f.issue.id)).monitorNextCheckAt).toBeNull());
      expect(f.deps.enqueueWakeup).toHaveBeenCalledOnce();
      await quiet();
    });
  });

});