import { randomUUID } from "node:crypto";
import { and, eq, sql } from "drizzle-orm";
import { afterAll, beforeAll, describe, expect, it } from "vitest";
import { agents, agentWakeupRequests, chatConversations, chatEndpoints, companies, createDb, type Db, environmentLeases, environments, executionWorkspaces, heartbeatRuns, issueComments, issues, issueRecoveryActions, nativeRunFinalizations, toolApplications, toolConnections, toolInvocations, applyPendingMigrations } from "@paperclipai/db";
import { startEmbeddedPostgresTestDatabase } from "../__tests__/helpers/embedded-postgres.js";
import { priorRecoveryApiReceipt, unresolvedRecoveryToolInvocation } from "./recovery-effect-receipts.js";
import { requestTaskRetry } from "./task-retry.js";
import { HttpError } from "../errors.js";
import { NativeChatReviewPresentationContentionError } from "./native-runtime/native-chat-review-presentation.js";
import { readFreshWorkspaceReadiness } from "./fresh-workspace-continuation.js";
import { settleUnrecoverableExecutions } from "./execution-recovery-resolution.js";
import { createSystemRecovery, failSystemRecovery, readSystemRecovery, SystemRecoveryFailure } from "./system-recovery-state.js";
import { instanceSettingsService } from "./instance-settings.js";
import { heartbeatService } from "./heartbeat.js";
import { taskChatRetryCanAwaitRecovery, taskChatRetryExecutionStopped } from "./chat-channels/task-retry-authority.js";
import { admitExplicitNativeContinuation } from "./explicit-native-continuation.js";
import { buildExecutionContinuation } from "./execution-continuation.js";
import { taskRetryRunAncestry } from "./recovery-run-ancestry.js";

describe("durable task Retry admission", () => {
  let postgres: Awaited<ReturnType<typeof startEmbeddedPostgresTestDatabase>>;
  let db: ReturnType<typeof createDb>;
  beforeAll(async () => {
    const externalUrl = process.env.PAPERCLIP_TASK_RETRY_TEST_DATABASE_URL;
    if (externalUrl) {
      await applyPendingMigrations(externalUrl);
      db = createDb(externalUrl);
    } else {
      postgres = await startEmbeddedPostgresTestDatabase("task-retry-");
      db = createDb(postgres.connectionString);
    }
  }, 30_000);
  afterAll(async () => { await db?.$client.end(); await postgres?.cleanup(); });
  async function seed() {
    const companyId = randomUUID(), issueId = randomUUID(), agentId = randomUUID(), runId = randomUUID();
    await db.insert(companies).values({ id: companyId, name: "Retry company", issuePrefix: `T${companyId.slice(0, 6)}` });
    await db.insert(agents).values({ id: agentId, companyId, name: "Worker", adapterType: "paperclip_runner", status: "idle" });
    await db.insert(issues).values({ id: issueId, companyId, title: "Continue saved work", status: "blocked", assigneeAgentId: agentId });
    await db.insert(heartbeatRuns).values({ id: runId, companyId, agentId, issueId, status: "failed",
      contextSnapshot: { issueId }, finishedAt: new Date() });
    return { db, companyId, issueId, actorId: "board", observedRunId: runId, idempotencyKey: randomUUID() };
  }
  it.each(["valid", "wrong_run", "wrong_actor", "wrong_source", "wrong_generation", "unadmitted", "missing_authorization"])(
    "dispatches a preparation Retry with no recovery-action row only from its exact admitted receipt: %s", async state => {
      const input = await seed();
      await db.update(issues).set({ status: "todo" }).where(eq(issues.id, input.issueId));
      const [source] = await db.update(heartbeatRuns).set({ runtimeMode: "legacy", errorCode: "setup_failed",
        executionStage: "preparing", runnerProfileJson: { adapterDispatch: { adapterType: "paperclip_runner" } },
        resultJson: { executionRecovery: { kind: "bootstrap", providerWorkStarted: false } },
      }).where(eq(heartbeatRuns.id, input.observedRunId)).returning();
      const receipt = await requestTaskRetry(input), successorRunId = randomUUID();
      const continuation = await db.transaction(async tx => {
        await tx.select().from(issues).where(eq(issues.id, input.issueId)).for("update");
        const result = await admitExplicitNativeContinuation({ db: tx as unknown as Db,
          companyId: input.companyId, issueId: input.issueId, agentId: source.agentId,
          actorId: input.actorId, actorType: "user", reason: "task_retry", commentId: null,
          successorRunId, taskRetryRequestId: receipt.requestId!,
        });
        await tx.insert(heartbeatRuns).values({ id: successorRunId, companyId: input.companyId, agentId: source.agentId,
          issueId: input.issueId, status: "queued", contextSnapshot: { issueId: input.issueId } });
        await tx.update(agentWakeupRequests).set({ status: "coalesced", runId: successorRunId })
          .where(eq(agentWakeupRequests.id, receipt.requestId!));
        return result;
      });
      expect(continuation).toMatchObject({ previousRunId: source.id, taskRetryRequestId: receipt.requestId });
      expect(await db.select().from(issueRecoveryActions).where(eq(issueRecoveryActions.sourceIssueId, input.issueId))).toHaveLength(0);
      const [admitted] = await db.select().from(agentWakeupRequests).where(eq(agentWakeupRequests.id, receipt.requestId!));
      const taskRetry = admitted.payload!.taskRetry as Record<string, unknown>;
      if (state !== "valid") await db.update(agentWakeupRequests).set({
        ...(state === "wrong_run" ? { runId: source.id } : {}),
        ...(state === "wrong_actor" ? { requestedByActorId: "other-user" } : {}),
        ...(state === "unadmitted" ? { status: "deferred_issue_execution" } : {}),
        ...(state === "wrong_source" ? { payload: { ...admitted.payload, taskRetry: { ...taskRetry, sourceRunId: randomUUID() } } } : {}),
        ...(state === "wrong_generation" ? { payload: { ...admitted.payload, taskRetry: { ...taskRetry, generationId: randomUUID() } } } : {}),
        ...(state === "missing_authorization" ? { payload: { ...admitted.payload,
          taskRetry: Object.fromEntries(Object.entries(taskRetry).filter(([key]) => key !== "continuation")) } } : {}),
      }).where(eq(agentWakeupRequests.id, admitted.id));
      const result = buildExecutionContinuation({ db, companyId: input.companyId, issueId: input.issueId,
        agentId: source.agentId, runId: successorRunId,
        context: { issueId: input.issueId, explicitUserContinuation: continuation }, summary: null, exposeLowTrustRaw: false });
      if (state === "valid") await expect(result).resolves.toMatchObject({ interruptedRunId: source.id });
      else await expect(result).rejects.toThrow("continuation_user_authorization_missing");
      expect((await db.select().from(heartbeatRuns).where(eq(heartbeatRuns.id, source.id)))[0])
        .toMatchObject({ status: "failed", resultJson: source.resultJson });
    });
  // A run admitted by Retry can fail before provider dispatch, for example when
  // a saved-workspace download is reset. Its bounded transient retry carries
  // the same Retry authority, recorded for the new run.
  async function seedFailedRetryAdmittedRun() {
    const input = await seed();
    await db.update(issues).set({ status: "todo" }).where(eq(issues.id, input.issueId));
    const [source] = await db.update(heartbeatRuns).set({ runtimeMode: "legacy", errorCode: "setup_failed",
      executionStage: "preparing", runnerProfileJson: { adapterDispatch: { adapterType: "paperclip_runner" } },
      resultJson: { executionRecovery: { kind: "bootstrap", providerWorkStarted: false } },
    }).where(eq(heartbeatRuns.id, input.observedRunId)).returning();
    const receipt = await requestTaskRetry(input), parentId = randomUUID();
    const continuation = await db.transaction(async tx => {
      await tx.select().from(issues).where(eq(issues.id, input.issueId)).for("update");
      const result = await admitExplicitNativeContinuation({ db: tx as unknown as Db,
        companyId: input.companyId, issueId: input.issueId, agentId: source.agentId,
        actorId: input.actorId, actorType: "user", reason: "task_retry", commentId: null,
        successorRunId: parentId, taskRetryRequestId: receipt.requestId!,
      });
      await tx.insert(heartbeatRuns).values({ id: parentId, companyId: input.companyId, agentId: source.agentId,
        issueId: input.issueId, status: "queued", contextSnapshot: { issueId: input.issueId } });
      await tx.update(agentWakeupRequests).set({ status: "coalesced", runId: parentId })
        .where(eq(agentWakeupRequests.id, receipt.requestId!));
      return result;
    });
    expect(continuation).toMatchObject({ previousRunId: source.id, commentId: null, taskRetryRequestId: receipt.requestId });
    const now = new Date();
    const [parent] = await db.update(heartbeatRuns).set({ runtimeMode: "legacy", status: "failed", responsibleUserId: input.actorId,
      errorCode: "remote_workspace_restore_failed", executionStage: "preparing", startedAt: now, finishedAt: now,
      runnerProfileJson: { adapterDispatch: { adapterType: "paperclip_runner" } },
      resultJson: { executionRecovery: { kind: "bootstrap", providerWorkStarted: false },
        remoteWorkspaceRestore: { step: "snapshot_download", retryable: true } },
      contextSnapshot: { issueId: input.issueId, wakeReason: "task_retry", taskRetryRequestId: receipt.requestId,
        previousRunId: source.id, explicitUserContinuation: continuation },
    }).where(eq(heartbeatRuns.id, parentId)).returning();
    await db.update(issues).set({ status: "in_progress", executionRunId: parent.id }).where(eq(issues.id, input.issueId));
    return { input, source, parent, now, retryRequestId: receipt.requestId! };
  }
  const dispatchRun = (input: { companyId: string; issueId: string }, run: typeof heartbeatRuns.$inferSelect) =>
    buildExecutionContinuation({ db, companyId: input.companyId, issueId: input.issueId, agentId: run.agentId,
      runId: run.id, context: run.contextSnapshot!, summary: null, exposeLowTrustRaw: false });
  it("retries a transient preparation failure of a Retry-admitted run under the same Retry authority", async () => {
    const f = await seedFailedRetryAdmittedRun();
    await expect(dispatchRun(f.input, f.parent)).resolves.toMatchObject({ interruptedRunId: f.source.id });
    const heartbeat = heartbeatService(db);
    const first = await heartbeat.scheduleBoundedRetry(f.parent.id, { now: f.now, delayMs: 1000 });
    expect(first.outcome).toBe("scheduled");
    if (first.outcome !== "scheduled") return;
    expect(first.run).toMatchObject({ retryOfRunId: f.parent.id, scheduledRetryAttempt: 1 });
    expect(first.run.contextSnapshot?.explicitUserContinuation).toEqual({
      previousRunId: f.parent.id, commentId: null, taskRetryRequestId: f.retryRequestId });
    // The Retry receipt stays bound to the run it admitted.
    expect((await db.select().from(agentWakeupRequests).where(eq(agentWakeupRequests.id, f.retryRequestId)))[0])
      .toMatchObject({ status: "coalesced", runId: f.parent.id });
    await expect(dispatchRun(f.input, first.run)).resolves.toMatchObject({ interruptedRunId: f.parent.id });
    // A repeated request adopts the same successor without another receipt.
    expect(await heartbeat.scheduleBoundedRetry(f.parent.id, { now: f.now })).toMatchObject({
      outcome: "scheduled", run: { id: first.run.id } });
    expect(await db.select().from(issueRecoveryActions).where(eq(issueRecoveryActions.sourceIssueId, f.input.issueId)))
      .toHaveLength(1);
    // A second transient failure retries from its immediate parent, then the budget ends.
    const later = new Date(f.now.getTime() + 2000);
    const [failedFirst] = await db.update(heartbeatRuns).set({ status: "failed", errorCode: "remote_workspace_restore_failed",
      startedAt: later, finishedAt: later, resultJson: f.parent.resultJson }).where(eq(heartbeatRuns.id, first.run.id)).returning();
    await db.update(issues).set({ executionRunId: failedFirst.id }).where(eq(issues.id, f.input.issueId));
    const second = await heartbeat.scheduleBoundedRetry(failedFirst.id, { now: later });
    expect(second.outcome).toBe("scheduled");
    if (second.outcome !== "scheduled") return;
    expect(second.run).toMatchObject({ retryOfRunId: failedFirst.id, scheduledRetryAttempt: 2 });
    await expect(dispatchRun(f.input, second.run)).resolves.toMatchObject({ interruptedRunId: failedFirst.id });
    await db.update(heartbeatRuns).set({ status: "failed", errorCode: "remote_workspace_restore_failed",
      startedAt: later, finishedAt: later }).where(eq(heartbeatRuns.id, second.run.id));
    await db.update(issues).set({ executionRunId: second.run.id }).where(eq(issues.id, f.input.issueId));
    expect(await heartbeat.scheduleBoundedRetry(second.run.id, { now: later })).toMatchObject({ outcome: "retry_exhausted" });
    // Removing the successor's own receipt reproduces the dispatch refusal.
    const receipts = await db.select().from(issueRecoveryActions).where(eq(issueRecoveryActions.sourceIssueId, f.input.issueId));
    expect(receipts).toHaveLength(2);
    await db.delete(issueRecoveryActions).where(eq(issueRecoveryActions.id,
      receipts.find(row => (row.evidence.explicitUserContinuation as Record<string, unknown>).runId === second.run.id)!.id));
    await expect(dispatchRun(f.input, second.run)).rejects.toThrow("continuation_user_authorization_missing");
  });
  it.each(["wrong_actor", "unadmitted", "wrong_generation", "other_run", "chat_retry", "fresh_workspace", "reassigned", "superseded"] as const)(
    "does not lend Retry authority to an automatic retry after %s", async kind => {
      const f = await seedFailedRetryAdmittedRun();
      const [wake] = await db.select().from(agentWakeupRequests).where(eq(agentWakeupRequests.id, f.retryRequestId));
      const taskRetry = wake.payload!.taskRetry as Record<string, unknown>;
      if (["wrong_actor", "unadmitted", "wrong_generation", "other_run", "chat_retry"].includes(kind))
        await db.update(agentWakeupRequests).set({
          ...(kind === "wrong_actor" ? { requestedByActorId: "other-user" } : {}),
          ...(kind === "unadmitted" ? { status: "deferred_issue_execution" } : {}),
          ...(kind === "other_run" ? { runId: f.source.id } : {}),
          ...(kind === "wrong_generation" ? { payload: { ...wake.payload, taskRetry: { ...taskRetry, generationId: randomUUID() } } } : {}),
          ...(kind === "chat_retry" ? { payload: { ...wake.payload, taskRetry: { ...taskRetry, chatActionId: randomUUID() } } } : {}),
        }).where(eq(agentWakeupRequests.id, f.retryRequestId));
      if (kind === "fresh_workspace") await db.update(heartbeatRuns).set({ contextSnapshot: { ...f.parent.contextSnapshot,
        explicitUserContinuation: { ...(f.parent.contextSnapshot!.explicitUserContinuation as Record<string, unknown>),
          readiness: { mode: "fresh_isolated_workspace", retryIntentId: f.retryRequestId, sourceRunId: f.source.id, retainedSourceIds: [] } } },
      }).where(eq(heartbeatRuns.id, f.parent.id));
      if (kind === "reassigned") await db.update(issues).set({ assigneeAgentId: null }).where(eq(issues.id, f.input.issueId));
      if (kind === "superseded") await db.insert(heartbeatRuns).values({ companyId: f.input.companyId, agentId: f.parent.agentId,
        status: "succeeded", contextSnapshot: { issueId: f.input.issueId }, createdAt: new Date(f.now.getTime() + 1000) });
      const result = await heartbeatService(db).scheduleBoundedRetry(f.parent.id, { now: f.now });
      expect(result.outcome).not.toBe("scheduled");
      expect(await db.select().from(heartbeatRuns).where(eq(heartbeatRuns.retryOfRunId, f.parent.id))).toHaveLength(0);
      expect(await db.select().from(issueRecoveryActions).where(eq(issueRecoveryActions.sourceIssueId, f.input.issueId)))
        .toHaveLength(0);
    });
  it("serializes concurrent clicks and remembers each key after completion", async () => {
    const input = await seed();
    const second = { ...input, idempotencyKey: randomUUID() };
    const [one, two] = await Promise.all([requestTaskRetry(input), requestTaskRetry(second)]);
    expect(one.requestId).toBe(two.requestId);
    const rows = await db.select().from(agentWakeupRequests).where(eq(agentWakeupRequests.companyId, input.companyId));
    expect(rows.filter(row => row.status === "deferred_issue_execution")).toHaveLength(1);
    expect(rows).toHaveLength(2);
    await db.update(agentWakeupRequests).set({ status: "failed" }).where(eq(agentWakeupRequests.id, one.requestId!));
    expect((await requestTaskRetry(input)).requestId).toBe(one.requestId);
    expect((await requestTaskRetry(second)).requestId).toBe(one.requestId);
    const next = await requestTaskRetry({ ...input, idempotencyKey: randomUUID() });
    expect(next.requestId).not.toBe(one.requestId);
  });
  it.each(["within_limit", "over_limit", "newer_predecessor"] as const)("validates the complete persisted Retry ancestry: %s", async gate => {
    const input = await seed();
    const [source] = await db.select().from(heartbeatRuns).where(eq(heartbeatRuns.id, input.observedRunId));
    const [ancestor] = await db.insert(heartbeatRuns).values({ companyId: input.companyId, issueId: input.issueId,
      agentId: source.agentId, status: "failed", finishedAt: new Date(), createdAt: new Date(source.createdAt.getTime() +
        (gate === "newer_predecessor" ? 1000 : -1000)) }).returning();
    const systemRecovery = createSystemRecovery(ancestor.id);
    const [hold] = await db.insert(issueRecoveryActions).values({ companyId: input.companyId, sourceIssueId: input.issueId,
      kind: "active_run_watchdog", cause: "legacy_execution_requires_reconciliation", fingerprint: ancestor.id,
      nextAction: "Existing recovery", evidence: { runId: ancestor.id, systemRecovery } }).returning();
    let previous = ancestor.id;
    const length = gate === "over_limit" ? 31 : gate === "within_limit" ? 30 : 0;
    for (let index = 0; index < length; index++) {
      const [run] = await db.insert(heartbeatRuns).values({ companyId: input.companyId, issueId: input.issueId,
        agentId: source.agentId, status: "failed", finishedAt: new Date(), createdAt: ancestor.createdAt,
        retryOfRunId: previous }).returning();
      previous = run.id;
    }
    await db.update(heartbeatRuns).set({ retryOfRunId: previous }).where(eq(heartbeatRuns.id, source.id));
    const ancestry = await taskRetryRunAncestry({ db, companyId: input.companyId, issueId: input.issueId,
      agentId: source.agentId, sourceRunId: source.id });
    const receipt = await requestTaskRetry(input);
    const state = readSystemRecovery((await db.select().from(issueRecoveryActions).where(eq(issueRecoveryActions.id, hold.id)))[0].evidence);
    if (gate === "within_limit") {
      expect(ancestry).toHaveLength(32);
      expect(ancestry).toContain(ancestor.id);
      expect(state?.intentId).toBe(receipt.requestId);
    } else {
      expect(ancestry).toBeNull();
      expect(state).toEqual(systemRecovery);
    }
  });
  it("does not resurrect completed tasks or retry an obsolete assignment", async () => {
    const input = await seed();
    await db.update(issues).set({ status: "done" }).where(eq(issues.id, input.issueId));
    expect(await requestTaskRetry(input)).toMatchObject({ accepted: false, stale: true });
    await db.update(issues).set({ status: "blocked", assigneeAgentId: null }).where(eq(issues.id, input.issueId));
    expect(await requestTaskRetry(input)).toMatchObject({ accepted: false, stale: true });
    expect(await db.select().from(agentWakeupRequests).where(eq(agentWakeupRequests.companyId, input.companyId))).toHaveLength(0);
  });
  it.each(["stopped", "running", "owned", "changed_workspace", "changed_source", "missing_stop", "destroyed", "foreign_task"].flatMap(state =>
    ["retry", "message"].map(entry => ({ state, entry }))).concat([{ state: "stopped", entry: "preview" }]))(
    "preserves the actual remote writer behind a newer setup failure only with exact stopped authority: $entry $state", async ({ state, entry }) => {
      const input = await seed();
      const [latest] = await db.select().from(heartbeatRuns).where(eq(heartbeatRuns.id, input.observedRunId));
      const writerId = randomUUID(), workspaceId = randomUUID(), pluginId = randomUUID();
      const sourceIssueId = state === "foreign_task" ? randomUUID() : input.issueId;
      if (sourceIssueId !== input.issueId) await db.insert(issues).values({ id: sourceIssueId,
        companyId: input.companyId, title: "Another task", status: "blocked", assigneeAgentId: latest.agentId });
      await db.update(heartbeatRuns).set({ errorCode: "setup_failed", resultJson: {
        executionRecovery: { kind: "bootstrap", providerWorkStarted: false },
      } }).where(eq(heartbeatRuns.id, latest.id));
      await db.insert(heartbeatRuns).values({ id: writerId, companyId: input.companyId, agentId: latest.agentId,
        issueId: sourceIssueId, nativeIssueId: sourceIssueId, runtimeMode: "native",
        status: state === "running" ? "running" : "failed", finishedAt: state === "running" ? null : new Date(),
        createdAt: new Date(latest.createdAt.getTime() - 60_000),
        contextSnapshot: { issueId: sourceIssueId, executionWorkspaceId: workspaceId },
        resultJson: { workspaceRestoreFailure: "restore_failed", originalDiagnostic: true },
      });
      await db.insert(nativeRunFinalizations).values({ companyId: input.companyId, issueId: sourceIssueId,
        runId: writerId, phase: "terminal_failure", leaseOwner: state === "owned" ? "live-controller" : null });
      const [environment] = await db.insert(environments).values({ name: `Stopped source ${writerId}`, driver: "sandbox" }).returning();
      const [lease] = await db.insert(environmentLeases).values({ companyId: input.companyId, issueId: sourceIssueId,
        heartbeatRunId: writerId, environmentId: environment.id, provider: "daytona", providerLeaseId: randomUUID(),
        status: "released", cleanupStatus: "success", leasePolicy: "reuse_by_environment", acquiredAt: new Date(Date.now() - 60_000),
        releasedAt: new Date(),
      }).returning();
      const confirmedAt = lease.releasedAt!.toISOString();
      const identity = { companyId: input.companyId, runId: writerId, leaseId: lease.id,
        provider: lease.provider, providerLeaseId: lease.providerLeaseId, confirmedAt };
      const metadata = { driver: "sandbox", pluginId, sandboxProviderPlugin: true, remoteCwd: "/work",
        ...(state === "missing_stop" ? {} : {
          remoteExecutionTermination: { ...identity, schema: "paperclip.remote-termination.v1", state: state === "destroyed" ? "destroyed" : "stopped" },
          sandboxStopAndRetainReceipt: { ...identity, schema: "paperclip.sandbox-stop-and-retain-receipt.v1",
            pluginId, method: "environmentStopLease", requestId: randomUUID() },
        }),
      };
      await db.update(environmentLeases).set({ metadata }).where(eq(environmentLeases.id, lease.id));
      const reference = { schema: "paperclip.remote-workspace-run.v1", workspaceId, epoch: 3,
        snapshotId: randomUUID(), leaseId: lease.id, providerLeaseId: lease.providerLeaseId, remoteCwd: "/work", state: "prepared" };
      await db.update(heartbeatRuns).set({ runnerProfileJson: { remoteWorkspace: {
        ...reference, ...(state === "changed_source" ? { providerLeaseId: randomUUID() } : {}),
      } } }).where(eq(heartbeatRuns.id, writerId));
      const authority = { schema: "paperclip.remote-workspace.v1", epoch: state === "changed_workspace" ? 4 : 3,
        snapshotId: reference.snapshotId, source: { kind: "empty" }, writerRunId: writerId, dirty: true,
        location: { environmentId: environment.id, leaseId: lease.id, providerLeaseId: lease.providerLeaseId, remoteCwd: "/work" } };
      await db.insert(executionWorkspaces).values({ id: workspaceId, companyId: input.companyId, sourceIssueId,
        name: "Unfinished remote writer", mode: "isolated_workspace", strategyType: "project_primary", cwd: "/work",
        providerType: "cloud_sandbox", metadata: { remoteWorkspace: authority } });
      await db.update(environmentLeases).set({ executionWorkspaceId: workspaceId }).where(eq(environmentLeases.id, lease.id));
      await db.update(issues).set({ executionWorkspaceId: workspaceId }).where(eq(issues.id, input.issueId));

      if (entry === "retry") {
        const receipt = await requestTaskRetry(input);
        expect((await requestTaskRetry(input)).requestId).toBe(receipt.requestId);
      } else {
        const [comment] = await db.insert(issueComments).values({ companyId: input.companyId, issueId: input.issueId,
          authorType: "user", authorUserId: input.actorId, body: "Continue from saved work.",
          createdAt: new Date() }).returning();
        for (let attempt = 0; attempt < 2; attempt++) await db.transaction(tx => admitExplicitNativeContinuation({
          db: tx as unknown as typeof db, companyId: input.companyId, issueId: input.issueId, agentId: latest.agentId,
          actorType: "user", actorId: input.actorId, commentId: comment.id, successorRunId: randomUUID(),
          reason: "issue_commented", dryRun: entry === "preview",
        }));
      }
      const [source] = await db.select().from(heartbeatRuns).where(eq(heartbeatRuns.id, writerId));
      const repairs = (await db.select().from(issueRecoveryActions).where(eq(issueRecoveryActions.sourceIssueId, input.issueId)))
        .filter(action => action.evidence.workspaceRestoreRecovery);
      if (state === "stopped" && entry !== "preview") {
        expect(source.resultJson).toMatchObject({ originalDiagnostic: true,
          workspaceRestoreRecovery: { leaseIds: [lease.id] } });
        expect(repairs).toHaveLength(1);
        expect(repairs[0].evidence.runId).toBe(writerId);
      } else {
        expect(source.resultJson).not.toHaveProperty("workspaceRestoreRecovery");
        expect(repairs).toHaveLength(0);
      }
      expect((await db.select().from(environmentLeases).where(eq(environmentLeases.id, lease.id)))[0])
        .toMatchObject({ status: "released", leasePolicy: "reuse_by_environment", metadata });
      expect((await db.select().from(executionWorkspaces).where(eq(executionWorkspaces.id, workspaceId)))[0].metadata?.remoteWorkspace)
        .toEqual(authority);
      expect(await db.select().from(heartbeatRuns).where(eq(heartbeatRuns.companyId, input.companyId))).toHaveLength(2);
      expect(await db.select().from(agentWakeupRequests).where(eq(agentWakeupRequests.companyId, input.companyId))).toHaveLength(entry === "retry" ? 1 : 0);
    });
  it.each(["prepared", "mismatched", "owned"] as const)("reconstructs missing native preservation on deliberate Retry only for an exact unowned source: %s", async state => {
    const input = await seed();
    const [issue] = await db.select().from(issues).where(eq(issues.id, input.issueId));
    const [environment] = await db.insert(environments).values({ name: input.observedRunId, driver: "sandbox" }).returning();
    const [lease] = await db.insert(environmentLeases).values({ companyId: input.companyId, issueId: input.issueId,
      heartbeatRunId: input.observedRunId, environmentId: environment.id, provider: "daytona", providerLeaseId: randomUUID(),
      status: "active", leasePolicy: "reuse_by_environment", metadata: { remoteCwd: "/work" },
    }).returning();
    await db.update(heartbeatRuns).set({ runtimeMode: "native", nativeIssueId: input.issueId,
      nativePhase: "terminal_failure", errorCode: "execution_finalization_deadline_exceeded", runnerProfileJson: {
        nativeWorkspaceSync: { schema: "paperclip.native-workspace-sync/v3", state: "prepared",
          descriptorSha256: "a".repeat(64), baselineSha256: "b".repeat(64), finalHostSha256: null,
          workspaceId: input.observedRunId, leaseId: lease.id,
          providerLeaseId: state === "mismatched" ? randomUUID() : lease.providerLeaseId,
          remoteCwd: "/work", resourceDisposition: "keep_running" },
      } }).where(eq(heartbeatRuns.id, input.observedRunId));
    await db.insert(nativeRunFinalizations).values({ companyId: input.companyId, issueId: input.issueId,
      runId: input.observedRunId, phase: "terminal_failure", leaseOwner: state === "owned" ? "live-controller" : null });
    await db.insert(issueRecoveryActions).values({ companyId: input.companyId, sourceIssueId: input.issueId,
      kind: "active_run_watchdog", status: "resolved", ownerType: "board",
      cause: "execution_finalization_deadline_exceeded", fingerprint: randomUUID(), outcome: "blocked",
      nextAction: "Inspect the failed run.", evidence: { runId: input.observedRunId,
        providerOwnership: "unverified", automaticRecovery: { replay: "blocked", actionOutcome: "unknown" } } });

    const receipt = await requestTaskRetry(input);
    expect((await requestTaskRetry(input)).requestId).toBe(receipt.requestId);
    const [source] = await db.select().from(heartbeatRuns).where(eq(heartbeatRuns.id, input.observedRunId));
    const [retained] = await db.select().from(environmentLeases).where(eq(environmentLeases.id, lease.id));
    const repairs = (await db.select().from(issueRecoveryActions).where(eq(issueRecoveryActions.sourceIssueId, input.issueId)))
      .filter(action => action.evidence.workspaceRestoreRecovery);
    if (state === "prepared") {
      expect(source.resultJson).toMatchObject({ workspaceRestoreRecovery: { leaseIds: [lease.id] } });
      expect(retained).toMatchObject({ status: "pending_cleanup", leasePolicy: "retain_on_failure" });
      expect(repairs).toHaveLength(1);
      expect(readSystemRecovery(repairs[0].evidence)).toMatchObject({ state: "scheduled", intentId: receipt.requestId });
      expect(await taskChatRetryCanAwaitRecovery(db, source, input.issueId, receipt.requestId!)).toBe(true);
    } else {
      expect(source.resultJson).toBeNull();
      expect(retained).toMatchObject({ status: "active", leasePolicy: "reuse_by_environment" });
      expect(repairs).toHaveLength(0);
    }
    expect(await taskChatRetryExecutionStopped(db, source)).toBe(false);
    expect(retained.metadata).not.toHaveProperty("remoteExecutionTermination");
    expect(await db.select().from(heartbeatRuns).where(eq(heartbeatRuns.companyId, input.companyId))).toHaveLength(1);
    expect((await db.select().from(issues).where(eq(issues.id, input.issueId)))[0])
      .toMatchObject({ status: "blocked", assigneeAgentId: issue.assigneeAgentId, executionRunId: null, checkoutRunId: null });
  });
  it("requires current Chat ownership and ignores retired off values when replaying a retry receipt", async () => {
    const input = await seed();
    const settings = instanceSettingsService(db);
    await settings.updateExperimental({ enableAgentChat: true });
    await db.update(issues).set({ conversationAgentId: (await db.select().from(issues).where(eq(issues.id, input.issueId)))[0].assigneeAgentId,
      conversationUserId: input.actorId, conversationState: "waiting" }).where(eq(issues.id, input.issueId));
    try {
      await expect(requestTaskRetry({ ...input, actorId: "another-user" })).rejects.toMatchObject({ status: 403 });
      expect(await db.select().from(agentWakeupRequests).where(eq(agentWakeupRequests.companyId, input.companyId))).toHaveLength(0);
      const accepted = await requestTaskRetry(input);
      expect(accepted.accepted).toBe(true);
      await settings.updateExperimental({ enableAgentChat: false });
      expect((await requestTaskRetry(input)).requestId).toBe(accepted.requestId);
      await settings.updateExperimental({ enableAgentChat: true });
      await db.update(issues).set({ conversationUserId: "new-owner" }).where(eq(issues.id, input.issueId));
      await expect(requestTaskRetry(input)).rejects.toMatchObject({ status: 403 });
      expect(await db.select().from(agentWakeupRequests).where(eq(agentWakeupRequests.companyId, input.companyId))).toHaveLength(1);
      const next = await requestTaskRetry({ ...input, actorId: "new-owner", idempotencyKey: randomUUID() });
      expect(next.requestId).not.toBe(accepted.requestId);
      expect((await db.select().from(agentWakeupRequests).where(eq(agentWakeupRequests.id, accepted.requestId!)))[0].status).toBe("failed");
    } finally { await settings.updateExperimental({ enableAgentChat: false }); }
  });
  it.each(["owner", "feature"] as const)("rechecks Chat ownership and ignores retired $0 values after waiting for the issue lock", async gate => {
    const input = { ...await seed(), actorId: "local-board", actorSource: "local_implicit" };
    const settings = instanceSettingsService(db);
    await settings.updateExperimental({ enableAgentChat: true, enableNativeRunner: true });
    const [issue] = await db.select().from(issues).where(eq(issues.id, input.issueId));
    await db.update(issues).set({ conversationAgentId: issue.assigneeAgentId, conversationUserId: input.actorId,
      conversationState: "waiting" }).where(eq(issues.id, input.issueId));
    // Keep admitted runs queued: this test asserts admission, not provider behavior.
    await db.update(agents).set({ runtimeConfig: { heartbeat: { maxConcurrentRuns: 1 } } })
      .where(eq(agents.id, issue.assigneeAgentId!));
    await db.insert(heartbeatRuns).values({ companyId: input.companyId, agentId: issue.assigneeAgentId!, status: "running" });
    const receipt = await requestTaskRetry(input);
    let release!: () => void, ready!: () => void, holderPid = 0;
    const held = new Promise<void>(resolve => { ready = resolve; });
    const unlock = new Promise<void>(resolve => { release = resolve; });
    const holder = db.transaction(async tx => {
      holderPid = (await tx.execute<{ pid: number }>(sql`select pg_backend_pid() as pid`))[0].pid;
      await tx.select().from(issues).where(eq(issues.id, issue.id)).for("update");
      ready(); await unlock;
      if (gate === "owner") await tx.update(issues).set({ conversationUserId: "new-owner" }).where(eq(issues.id, issue.id));
      else await instanceSettingsService(tx as unknown as typeof db).updateExperimental({ enableAgentChat: false });
    });
    let dispatch: Promise<unknown> | undefined;
    try {
      await held;
      dispatch = heartbeatService(db).resumeTaskRetry(input.companyId, receipt.requestId!).catch(error => error);
      await expect.poll(async () => (await db.execute<{ waiting: boolean }>(sql`select exists(
        select 1 from pg_stat_activity where datname = current_database()
          and ${holderPid} = any(pg_blocking_pids(pid))) as waiting`))[0].waiting, { timeout: 5_000 }).toBe(true);
      release(); await holder;
      if (gate === "owner") expect(await dispatch).toMatchObject({ status: 403 });
      else await dispatch;
      expect(await db.select().from(heartbeatRuns).where(and(eq(heartbeatRuns.companyId, input.companyId),
        eq(heartbeatRuns.status, "queued")))).toHaveLength(gate === "owner" ? 0 : 1);
      // Restore current authority; the same saved receipt can then admit one run.
      await settings.updateExperimental({ enableAgentChat: true });
      await db.update(issues).set({ conversationUserId: input.actorId }).where(eq(issues.id, issue.id));
      await heartbeatService(db).resumeTaskRetry(input.companyId, receipt.requestId!);
      expect(await db.select().from(heartbeatRuns).where(and(eq(heartbeatRuns.companyId, input.companyId),
        eq(heartbeatRuns.status, "queued")))).toHaveLength(1);
    } finally {
      release(); await Promise.allSettled([holder, dispatch]);
      await settings.updateExperimental({ enableAgentChat: false, enableNativeRunner: false });
    }
  }, 30_000);
  it("replaces an exhausted unadmitted generation only on a new deliberate click", async () => {
    const input = await seed();
    const first = await requestTaskRetry(input);
    const state = failSystemRecovery(createSystemRecovery(input.observedRunId, first.requestId!),
      new SystemRecoveryFailure("source_unavailable", "service_required"));
    const [action] = await db.insert(issueRecoveryActions).values({
      companyId: input.companyId, sourceIssueId: input.issueId, kind: "active_run_watchdog",
      ownerType: "system", cause: "legacy_execution_requires_reconciliation", fingerprint: randomUUID(),
      nextAction: "System recovery", evidence: { runId: input.observedRunId, systemRecovery: state },
    }).returning();
    expect((await requestTaskRetry(input)).requestId).toBe(first.requestId);
    const nextInput = { ...input, idempotencyKey: randomUUID() };
    const next = await requestTaskRetry(nextInput);
    expect(next.requestId).not.toBe(first.requestId);
    const [updated] = await db.select().from(issueRecoveryActions).where(eq(issueRecoveryActions.id, action.id));
    expect(readSystemRecovery(updated.evidence)).toMatchObject({ generationId: next.requestId, attempts: 0 });
    expect((await requestTaskRetry(nextInput)).requestId).toBe(next.requestId);
    const wakes = await db.select().from(agentWakeupRequests).where(eq(agentWakeupRequests.companyId, input.companyId));
    expect(wakes.find(row => row.id === first.requestId)?.status).toBe("failed");
    expect(wakes.filter(row => row.status === "deferred_issue_execution")).toHaveLength(1);
  });
  it("binds a key to its company, task and actor across all statuses", async () => {
    const input = await seed();
    const receipt = await requestTaskRetry(input);
    await db.update(agentWakeupRequests).set({ status: "completed" }).where(and(
      eq(agentWakeupRequests.companyId, input.companyId), eq(agentWakeupRequests.id, receipt.requestId!)));
    await expect(requestTaskRetry({ ...input, actorId: "another-user" })).rejects.toThrow("different task or user");
    expect((await requestTaskRetry(input)).requestId).toBe(receipt.requestId);
    const other = await seed();
    expect((await requestTaskRetry({ ...other, idempotencyKey: input.idempotencyKey })).requestId).not.toBe(receipt.requestId);
  });
  it("keeps an adopted historical hold with its maintenance owner", async () => {
    const input = await seed();
    const system = createSystemRecovery(input.observedRunId);
    const [action] = await db.insert(issueRecoveryActions).values({
      companyId: input.companyId, sourceIssueId: input.issueId, kind: "active_run_watchdog",
      status: "active", ownerType: "system", returnOwnerAgentId: null,
      cause: "legacy_execution_requires_reconciliation", fingerprint: randomUUID(),
      nextAction: "System preservation", evidence: { runId: input.observedRunId, systemRecovery: system },
    }).returning();
    await settleUnrecoverableExecutions(db);
    const [current] = await db.select().from(issueRecoveryActions).where(eq(issueRecoveryActions.id, action.id));
    expect(current.status).toBe("active");
    expect(current.ownerType).toBe("system");
    expect(current.evidence.systemRecovery).toEqual(system);
    expect(current.evidence.automaticRecovery).toBeUndefined();
  });
  it.each(["evaluate", "continue"])("keeps an admitted %s retry isolated after a failure without a preserved workspace", async strategy => {
    const input = await seed();
    const receipt = await requestTaskRetry(input);
    const [source] = await db.select().from(heartbeatRuns).where(eq(heartbeatRuns.id, input.observedRunId));
    const [successor] = await db.insert(heartbeatRuns).values({ companyId: input.companyId,
      agentId: source.agentId, issueId: input.issueId, status: "queued",
      contextSnapshot: { issueId: input.issueId, taskRetryRequestId: receipt.requestId } }).returning();
    expect(await readFreshWorkspaceReadiness(db, successor)).toBeNull();
    const [wake] = await db.select().from(agentWakeupRequests).where(eq(agentWakeupRequests.id, receipt.requestId!));
    await db.update(agentWakeupRequests).set({ runId: successor.id, status: "coalesced",
      payload: { ...wake.payload, taskRetry: { ...(wake.payload!.taskRetry as object), strategy } } })
      .where(eq(agentWakeupRequests.id, receipt.requestId!));
    const readiness = await readFreshWorkspaceReadiness(db, successor);
    expect(readiness).toMatchObject({ mode: "fresh_isolated_workspace", retryIntentId: receipt.requestId,
      sourceRunId: source.id });
    expect(await readFreshWorkspaceReadiness(db, successor)).toEqual(readiness);
    expect(await readFreshWorkspaceReadiness(db, { ...successor, id: randomUUID() })).toBeNull();
  });
  it("reuses completed API effects only from the retry ancestry while retaining unrelated uncertainty", async () => {
    const input = await seed();
    const [source] = await db.select().from(heartbeatRuns).where(eq(heartbeatRuns.id, input.observedRunId));
    const receipt = { operationId: "PATCH /api/issues/{id}", digest: "same-title", state: "completed",
      result: { ok: true, status: 200, data: { title: "Earlier title" } } };
    const [earlier] = await db.insert(heartbeatRuns).values({ companyId: input.companyId, issueId: input.issueId,
      agentId: source.agentId, status: "succeeded", createdAt: new Date(1_000), resultJson: { apiToolReceipts: { receipt } } }).returning();
    const accepted = await requestTaskRetry(input);
    const [successor] = await db.insert(heartbeatRuns).values({ companyId: input.companyId, issueId: input.issueId,
      agentId: source.agentId, status: "running", createdAt: new Date(Date.now() + 1_000) }).returning();
    await db.update(agentWakeupRequests).set({ status: "coalesced", runId: successor.id })
      .where(eq(agentWakeupRequests.id, accepted.requestId!));
    const call = { companyId: input.companyId, issueId: input.issueId, runId: successor.id,
      operationId: receipt.operationId, digest: receipt.digest };
    expect(await priorRecoveryApiReceipt(db, call)).toBeNull();
    // An actual predecessor edge makes the exact receipt relevant, even across multiple attempts.
    await db.update(heartbeatRuns).set({ retryOfRunId: earlier.id }).where(eq(heartbeatRuns.id, source.id));
    expect(await priorRecoveryApiReceipt(db, call)).toEqual(receipt);
    await db.update(heartbeatRuns).set({ retryOfRunId: null }).where(eq(heartbeatRuns.id, source.id));
    await db.update(heartbeatRuns).set({ resultJson: { apiToolReceipts: { receipt: { ...receipt,
      state: "pending", result: { ok: false, outcome: "unknown" } } } } }).where(eq(heartbeatRuns.id, earlier.id));
    expect(await priorRecoveryApiReceipt(db, call)).toMatchObject({ state: "pending", result: { outcome: "unknown" } });
  });

  async function automaticSuccessorOfTaskRetry() {
    const input = await seed();
    const [source] = await db.select().from(heartbeatRuns).where(eq(heartbeatRuns.id, input.observedRunId));
    const intent = await requestTaskRetry(input);
    const [retry] = await db.insert(heartbeatRuns).values({ companyId: input.companyId, issueId: input.issueId,
      agentId: source.agentId, runtimeMode: "native", status: "failed", createdAt: new Date(Date.now() + 1_000) }).returning();
    await db.update(agentWakeupRequests).set({ status: "coalesced", runId: retry.id })
      .where(eq(agentWakeupRequests.id, intent.requestId!));
    const [automatic] = await db.insert(heartbeatRuns).values({ companyId: input.companyId, issueId: input.issueId,
      agentId: source.agentId, runtimeMode: "native", status: "running", retryOfRunId: retry.id,
      createdAt: new Date(Date.now() + 2_000) }).returning();
    await db.insert(agentWakeupRequests).values({ companyId: input.companyId, agentId: source.agentId,
      runId: automatic.id, source: "automation", reason: "transient_failure", status: "coalesced",
      requestedByActorType: "system", payload: { issueId: input.issueId, retryOfRunId: retry.id } });
    return { input, retry, automatic };
  }

  it.each(["completed", "pending"] as const)("automatic successors inherit %s API receipts after task Retry", async state => {
    const { input, retry, automatic } = await automaticSuccessorOfTaskRetry();
    const receipt = { operationId: "POST /api/companies/{companyId}/projects", digest: "same-project", state,
      result: state === "completed" ? { ok: true, status: 201 } : { ok: false, outcome: "unknown" } };
    await db.update(heartbeatRuns).set({ resultJson: { apiToolReceipts: { receipt } } }).where(eq(heartbeatRuns.id, retry.id));
    const call = { companyId: input.companyId, issueId: input.issueId, runId: automatic.id,
      operationId: receipt.operationId, digest: receipt.digest };
    expect(await priorRecoveryApiReceipt(db, call)).toMatchObject({ state, result: receipt.result });
    // A transcript predecessor is insufficient; the persisted run edge owns lineage.
    await db.update(heartbeatRuns).set({ retryOfRunId: null, contextSnapshot: { previousRunId: retry.id } })
      .where(eq(heartbeatRuns.id, automatic.id));
    expect(await priorRecoveryApiReceipt(db, call)).toBeNull();
  });

  it("automatic successors retain uncertain upstream mutation fences after task Retry", async () => {
    const { input, retry, automatic } = await automaticSuccessorOfTaskRetry();
    const [application] = await db.insert(toolApplications).values({ companyId: input.companyId,
      name: "Test API", type: "rest_api" }).returning();
    const [connection] = await db.insert(toolConnections).values({ companyId: input.companyId, applicationId: application.id,
      name: "Test API", uid: randomUUID(), transport: "rest_api" }).returning();
    const [invocation] = await db.insert(toolInvocations).values({ companyId: input.companyId, issueId: input.issueId,
      runId: retry.id, connectionId: connection.id, toolName: "create_project", riskLevel: "write",
      status: "timed_out", startedAt: new Date() }).returning();
    const call = { companyId: input.companyId, issueId: input.issueId, runId: automatic.id,
      connectionId: connection.id, toolName: "create_project", risk: "write" };
    expect(await unresolvedRecoveryToolInvocation(db, call)).toBe(invocation.id);
    expect(await unresolvedRecoveryToolInvocation(db, { ...call, risk: "read" })).toBeNull();
  });

  it("retires a deferred Retry when newer work appears while dispatch waits for the issue lock", async () => {
    const input = { ...await seed(), actorId: "local-board", actorSource: "local_implicit" };
    await instanceSettingsService(db).updateExperimental({ enableNativeRunner: true });
    const [issue] = await db.select().from(issues).where(eq(issues.id, input.issueId));
    await db.update(agents).set({ runtimeConfig: { heartbeat: { maxConcurrentRuns: 1 } } })
      .where(eq(agents.id, issue.assigneeAgentId!));
    await db.insert(heartbeatRuns).values({ companyId: input.companyId, agentId: issue.assigneeAgentId!, status: "running" });
    const receipt = await requestTaskRetry(input);
    let release!: () => void, ready!: () => void, holderPid = 0;
    const held = new Promise<void>(resolve => { ready = resolve; });
    const unlock = new Promise<void>(resolve => { release = resolve; });
    const newerRunId = randomUUID();
    const holder = db.transaction(async tx => {
      holderPid = (await tx.execute<{ pid: number }>(sql`select pg_backend_pid() as pid`))[0].pid;
      await tx.select().from(issues).where(eq(issues.id, issue.id)).for("update");
      ready(); await unlock;
      await tx.insert(heartbeatRuns).values({ id: newerRunId, companyId: input.companyId, issueId: issue.id,
        agentId: issue.assigneeAgentId!, status: "succeeded", finishedAt: new Date(), createdAt: new Date(Date.now() + 1_000) });
      await tx.update(issues).set({ status: "in_progress", executionRunId: newerRunId }).where(eq(issues.id, issue.id));
    });
    let dispatch: Promise<unknown> | undefined;
    try {
      await held;
      dispatch = heartbeatService(db).resumeTaskRetry(input.companyId, receipt.requestId!);
      await expect.poll(async () => (await db.execute<{ waiting: boolean }>(sql`select exists(
        select 1 from pg_stat_activity where datname = current_database()
          and ${holderPid} = any(pg_blocking_pids(pid))) as waiting`))[0].waiting, { timeout: 5_000 }).toBe(true);
      release(); await holder; await dispatch;
      await heartbeatService(db).resumeTaskRetry(input.companyId, receipt.requestId!);
      expect(await db.select().from(heartbeatRuns).where(and(eq(heartbeatRuns.companyId, input.companyId),
        eq(heartbeatRuns.status, "queued")))).toHaveLength(0);
      expect((await db.select().from(agentWakeupRequests).where(eq(agentWakeupRequests.id, receipt.requestId!)))[0])
        .toMatchObject({ status: "skipped", runId: null, error: "task_retry_superseded" });
    } finally {
      release(); await Promise.allSettled([holder, dispatch]);
      await instanceSettingsService(db).updateExperimental({ enableNativeRunner: false });
    }
  }, 30_000);

  it("does not attach a new deliberate Retry to an unadmitted request for an older run", async () => {
    const input = await seed();
    const old = await requestTaskRetry(input);
    const [issue] = await db.select().from(issues).where(eq(issues.id, input.issueId));
    const [newer] = await db.insert(heartbeatRuns).values({ companyId: input.companyId, issueId: input.issueId,
      agentId: issue.assigneeAgentId!, status: "failed", finishedAt: new Date(), createdAt: new Date(Date.now() + 1_000) }).returning();
    const next = await requestTaskRetry({ ...input, observedRunId: newer.id, idempotencyKey: randomUUID() });
    expect(next.requestId).not.toBe(old.requestId);
    expect((await db.select().from(agentWakeupRequests).where(eq(agentWakeupRequests.id, old.requestId!)))[0])
      .toMatchObject({ status: "skipped", error: "task_retry_superseded" });
  });

  async function seedChatTask() {
    const input = await seed();
    const [issue] = await db.select().from(issues).where(eq(issues.id, input.issueId));
    const [application] = await db.insert(toolApplications).values({ companyId: input.companyId, name: "Slack", type: "chat" }).returning();
    const [connection] = await db.insert(toolConnections).values({ companyId: input.companyId, applicationId: application.id,
      name: "Slack", uid: randomUUID(), transport: "chat_sdk", connectionPurpose: "channel" }).returning();
    const [endpoint] = await db.insert(chatEndpoints).values({ companyId: input.companyId, connectionId: connection.id,
      provider: "slack", publicId: randomUUID(), assignedAgentId: issue.assigneeAgentId!, status: "active" }).returning();
    await db.insert(chatConversations).values({ companyId: input.companyId, endpointId: endpoint.id, issueId: input.issueId,
      externalConversationId: "channel", externalThreadId: randomUUID(), externalLabel: "#retry", state: "waiting" });
    return input;
  }
  const chatIdentityLock = (companyId: string, principalId: string) =>
    sql`pg_try_advisory_xact_lock(hashtextextended(${`chat-identity:${companyId}:${principalId}`}, 0))`;

  it("waits out brief chat authorization contention without a second request", async () => {
    const input = await seedChatTask();
    const principalId = randomUUID(), actionId = randomUUID();
    let calls = 0, locked!: () => void, release!: () => void;
    const held = new Promise<void>(resolve => { locked = resolve; });
    const mayRelease = new Promise<void>(resolve => { release = resolve; });
    // Another chat transaction owns this principal's authorization lock.
    const holder = db.transaction(async tx => {
      expect((await tx.execute<{ locked: boolean }>(sql`select ${chatIdentityLock(input.companyId, principalId)} as locked`))[0].locked).toBe(true);
      locked(); await mayRelease;
    });
    await held;
    const prepareChatRetry = async (tx: Db) => {
      calls += 1;
      if (calls === 2) release();
      // Mirror the production authorization check, including its rollback.
      const [row] = await tx.execute<{ locked: boolean }>(sql`select ${chatIdentityLock(input.companyId, principalId)} as locked`);
      if (!row?.locked) throw new NativeChatReviewPresentationContentionError();
      return { actionId };
    };
    try {
      const receipt = await requestTaskRetry({ ...input, prepareChatRetry });
      expect(receipt).toMatchObject({ accepted: true, chatActionId: actionId });
      expect(calls).toBeGreaterThan(1);
      const rows = await db.select().from(agentWakeupRequests).where(eq(agentWakeupRequests.companyId, input.companyId));
      expect(rows).toHaveLength(1);
      expect(rows[0]).toMatchObject({ id: receipt.requestId, status: "deferred_issue_execution",
        payload: { taskRetry: { chatActionId: actionId } } });
      expect((await requestTaskRetry({ ...input, prepareChatRetry })).requestId).toBe(receipt.requestId);
    } finally { release(); await holder; }
  });

  it("returns a retryable conflict when chat authorization stays busy", async () => {
    const input = await seedChatTask();
    let calls = 0;
    const failure = await requestTaskRetry({ ...input, prepareChatRetry: async () => {
      calls += 1;
      throw new NativeChatReviewPresentationContentionError();
    } }).catch(error => error);
    expect(failure).toBeInstanceOf(HttpError);
    expect(failure).toMatchObject({ status: 409, details: { code: "task_retry_busy", retryable: true } });
    expect(calls).toBe(10);
    expect(await db.select().from(agentWakeupRequests).where(eq(agentWakeupRequests.companyId, input.companyId))).toHaveLength(0);
  });

  it("does not retry an authorization denial", async () => {
    const input = await seedChatTask();
    let calls = 0;
    await expect(requestTaskRetry({ ...input, prepareChatRetry: async () => {
      calls += 1;
      throw new HttpError(403, "denied");
    } })).rejects.toMatchObject({ status: 403 });
    expect(calls).toBe(1);
  });
});