PaperClipAI/server/src/__tests__/plugin-worker-manager.test.ts

import path from "node:path";
import { fileURLToPath } from "node:url";
import { describe, expect, it, vi } from "vitest";
import type { Company, PaperclipPluginManifestV1 } from "@paperclipai/shared";
import {
  createHostClientHandlers,
  JsonRpcCallError,
  PLUGIN_RPC_ERROR_CODES,
  type HostServices,
  type HostToWorkerMethods,
} from "@paperclipai/plugin-sdk";

// Mock the shared logger, so a test reads the exact calls the manager makes
// when it logs a route event. The child logger returns the same mock object,
// so `log.warn`/`log.error` inside the manager are this mock's `warn`/`error`.
vi.mock("../middleware/logger.js", () => {
  const mockLogger: Record<string, unknown> = {
    trace: vi.fn(),
    debug: vi.fn(),
    info: vi.fn(),
    warn: vi.fn(),
    error: vi.fn(),
    fatal: vi.fn(),
    child: vi.fn(() => mockLogger),
  };
  return { logger: mockLogger, httpLogger: vi.fn() };
});

import { logger } from "../middleware/logger.js";
import { withRunExecutionTiming } from "../services/execution-preparation-timing.js";
import {
  appendStderrExcerpt,
  createDuplexRouteSlotController,
  createPluginWorkerHandle,
  createPluginWorkerManager,
  formatWorkerFailureMessage,
  resolveRpcCallTimeoutMs,
} from "../services/plugin-worker-manager.js";

const FIXTURES_DIR = path.join(path.dirname(fileURLToPath(import.meta.url)), "fixtures");
const DELAYED_WORKER_ENTRYPOINT = path.join(FIXTURES_DIR, "plugin-worker-delayed.cjs");
const INVOCATION_SCOPE_WORKER_ENTRYPOINT = path.join(
  FIXTURES_DIR,
  "plugin-worker-invocation-scope.cjs",
);
const TERMINATED_WORKER_ENTRYPOINT = path.join(FIXTURES_DIR, "plugin-worker-terminated.cjs");
const EXECUTE_LOG_WORKER_ENTRYPOINT = path.join(FIXTURES_DIR, "plugin-worker-execute-log.cjs");

const TEST_MANIFEST: PaperclipPluginManifestV1 = {
  id: "test.plugin",
  apiVersion: 1,
  version: "1.0.0",
  displayName: "Test plugin",
  description: "Test plugin",
  author: "Paperclip",
  categories: ["automation"],
  capabilities: [],
  entrypoints: { worker: "dist/worker.js" },
};

describe("worker configuration completion", () => {
  it("notifies only after a successful config callback and releases subscriptions", async () => {
    const manager = createPluginWorkerManager();
    const applied = vi.fn(), unsubscribe = manager.onConfigApplied(applied);
    try {
      await manager.startWorker("test.plugin", {
        entrypointPath: DELAYED_WORKER_ENTRYPOINT, manifest: TEST_MANIFEST, config: {},
        instanceInfo: { instanceId: "instance-1", hostVersion: "1.0.0" }, apiVersion: 1, hostHandlers: {},
      });
      expect(applied).not.toHaveBeenCalled();
      const updating = manager.call("test.plugin", "configChanged", { companyId: "company-1", config: { delayMs: 20 } });
      expect(applied).not.toHaveBeenCalled();
      await updating; expect(applied).toHaveBeenCalledTimes(1);
      await expect(manager.call("test.plugin", "configChanged", { companyId: "company-1", config: { fail: true } })).rejects.toThrow("configuration rejected");
      expect(applied).toHaveBeenCalledTimes(1);
      unsubscribe();
      await manager.call("test.plugin", "configChanged", { companyId: "company-1", config: {} });
      expect(applied).toHaveBeenCalledTimes(1);
    } finally { unsubscribe(); await manager.stopAll(); }
  });
});

describe("resolveRpcCallTimeoutMs", () => {
  const MAX_RPC_TIMEOUT_MS = 15 * 60 * 1_000;
  const MAX_NODE_TIMER_TIMEOUT_MS = 2_147_483_647;
  const DEFAULT_RPC_TIMEOUT_MS = 30_000;

  it("honors an explicit timeout above the 15-minute default ceiling", () => {
    // The sandbox environment driver requests ~4h + 30s buffer for
    // environmentExecute; this must not be clamped to 15 minutes.
    const fourHoursPlusBuffer = 4 * 60 * 60 * 1_000 + 30_000;
    expect(resolveRpcCallTimeoutMs(fourHoursPlusBuffer, DEFAULT_RPC_TIMEOUT_MS)).toBe(
      fourHoursPlusBuffer,
    );
  });

  it("honors an explicit timeout below the ceiling", () => {
    expect(resolveRpcCallTimeoutMs(100, DEFAULT_RPC_TIMEOUT_MS)).toBe(100);
    expect(resolveRpcCallTimeoutMs(MAX_RPC_TIMEOUT_MS - 1, DEFAULT_RPC_TIMEOUT_MS)).toBe(
      MAX_RPC_TIMEOUT_MS - 1,
    );
  });

  it("truncates fractional explicit timeouts", () => {
    expect(resolveRpcCallTimeoutMs(1_000.9, DEFAULT_RPC_TIMEOUT_MS)).toBe(1_000);
  });

  it("normalizes explicit timeouts to Node's timer-safe range", () => {
    expect(resolveRpcCallTimeoutMs(0.5, DEFAULT_RPC_TIMEOUT_MS)).toBe(1);
    expect(resolveRpcCallTimeoutMs(MAX_NODE_TIMER_TIMEOUT_MS + 1, DEFAULT_RPC_TIMEOUT_MS)).toBe(
      MAX_NODE_TIMER_TIMEOUT_MS,
    );
  });

  it("uses the default timeout when no explicit timeout is provided", () => {
    expect(resolveRpcCallTimeoutMs(undefined, DEFAULT_RPC_TIMEOUT_MS)).toBe(
      DEFAULT_RPC_TIMEOUT_MS,
    );
  });

  it("clamps only the default path to the 15-minute ceiling", () => {
    expect(resolveRpcCallTimeoutMs(undefined, 24 * 60 * 60 * 1_000)).toBe(MAX_RPC_TIMEOUT_MS);
  });

  it("falls back to the clamped default for unusable explicit timeouts", () => {
    for (const bad of [0, -1, Number.NaN, Number.POSITIVE_INFINITY]) {
      expect(resolveRpcCallTimeoutMs(bad, DEFAULT_RPC_TIMEOUT_MS)).toBe(DEFAULT_RPC_TIMEOUT_MS);
    }
    expect(resolveRpcCallTimeoutMs(Number.NaN, 24 * 60 * 60 * 1_000)).toBe(MAX_RPC_TIMEOUT_MS);
  });
});

describe("plugin-worker-manager stderr failure context", () => {
  it("appends worker stderr context to failure messages", () => {
    expect(
      formatWorkerFailureMessage(
        "Worker process exited (code=1, signal=null)",
        "TypeError: Unknown file extension \".ts\"",
      ),
    ).toBe(
      "Worker process exited (code=1, signal=null)\n\nWorker stderr:\nTypeError: Unknown file extension \".ts\"",
    );
  });

  it("does not duplicate stderr that is already present", () => {
    const message = [
      "Worker process exited (code=1, signal=null)",
      "",
      "Worker stderr:",
      "TypeError: Unknown file extension \".ts\"",
    ].join("\n");

    expect(
      formatWorkerFailureMessage(message, "TypeError: Unknown file extension \".ts\""),
    ).toBe(message);
  });

  it("keeps only the latest stderr excerpt", () => {
    let excerpt = "";
    excerpt = appendStderrExcerpt(excerpt, "first line");
    excerpt = appendStderrExcerpt(excerpt, "second line");

    expect(excerpt).toContain("first line");
    expect(excerpt).toContain("second line");

    excerpt = appendStderrExcerpt(excerpt, "x".repeat(9_000));

    expect(excerpt).not.toContain("first line");
    expect(excerpt).not.toContain("second line");
    expect(excerpt.length).toBeLessThanOrEqual(8_000);
  });

  it("times out environmentExecute calls using the handle default when no override is provided", async () => {
    const handle = createPluginWorkerHandle("test.plugin", {
      entrypointPath: DELAYED_WORKER_ENTRYPOINT,
      manifest: TEST_MANIFEST,
      config: {},
      instanceInfo: {
        instanceId: "instance-1",
        hostVersion: "1.0.0",
      },
      apiVersion: 1,
      hostHandlers: {},
      rpcTimeoutMs: 10,
    });

    try {
      await handle.start();

      await expect(handle.call("environmentExecute", {
        driverKey: "e2b",
        companyId: "company-1",
        environmentId: "environment-1",
        config: {},
        lease: { providerLeaseId: "lease-1" },
        command: "echo",
        delayMs: 50,
      } as HostToWorkerMethods["environmentExecute"][0])).rejects.toMatchObject({
        message: expect.stringContaining("timed out after 10ms"),
      });
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("honors per-call timeout overrides for environmentExecute", async () => {
    const handle = createPluginWorkerHandle("test.plugin", {
      entrypointPath: DELAYED_WORKER_ENTRYPOINT,
      manifest: TEST_MANIFEST,
      config: {},
      instanceInfo: {
        instanceId: "instance-1",
        hostVersion: "1.0.0",
      },
      apiVersion: 1,
      hostHandlers: {},
      rpcTimeoutMs: 10,
    });

    try {
      await handle.start();

      await expect(handle.call("environmentExecute", {
        driverKey: "e2b",
        companyId: "company-1",
        environmentId: "environment-1",
        config: {},
        lease: { providerLeaseId: "lease-1" },
        command: "echo",
        delayMs: 50,
      } as HostToWorkerMethods["environmentExecute"][0], 100)).resolves.toMatchObject({
        exitCode: 0,
        stdout: "ok\n",
      });
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it.each(["", "http://collector.test"])("does not emit an unhandled rejection before callers attach handlers (endpoint %s)", async endpoint => {
    vi.stubEnv("OTEL_EXPORTER_OTLP_ENDPOINT", endpoint);
    const unhandledRejection = vi.fn();
    process.on("unhandledRejection", unhandledRejection);

    const handle = createPluginWorkerHandle("test.plugin", {
      entrypointPath: TERMINATED_WORKER_ENTRYPOINT,
      manifest: TEST_MANIFEST,
      config: {},
      instanceInfo: {
        instanceId: "instance-1",
        hostVersion: "1.0.0",
      },
      apiVersion: 1,
      hostHandlers: {},
    });

    try {
      await handle.start();

      await withRunExecutionTiming("early-worker-error", async () => {
        let settled!: () => void;
        const workerSettled = new Promise<void>(resolve => { settled = resolve; });
        const pendingCall = handle.call(
          "environmentExecute" as keyof HostToWorkerMethods,
          {
            driverKey: "e2b",
            companyId: "company-1",
            environmentId: "environment-1",
            config: {},
            lease: { providerLeaseId: "lease-1" },
            command: "echo",
          } as HostToWorkerMethods[keyof HostToWorkerMethods][0],
          undefined, undefined, settled,
        );

        await workerSettled;
        await new Promise((resolve) => setImmediate(resolve));

        await expect(pendingCall).rejects.toBeInstanceOf(JsonRpcCallError);
        await expect(pendingCall).rejects.toMatchObject({
          message: expect.stringContaining("terminated"),
        });
        expect(unhandledRejection).not.toHaveBeenCalled();
      });
    } finally {
      process.off("unhandledRejection", unhandledRejection);
      await handle.stop().catch(() => undefined);
      vi.unstubAllEnvs();
    }
  });

  it("mints project Git scope only for project lifecycle and workspace operations", async () => {
    const handle = createPluginWorkerHandle("test.plugin", {
      entrypointPath: INVOCATION_SCOPE_WORKER_ENTRYPOINT, manifest: TEST_MANIFEST, config: {},
      instanceInfo: { instanceId: "instance-1", hostVersion: "1.0.0" }, apiVersion: 1,
      hostHandlers: { "companies.get": (async (_params: unknown, context?: { invocationScope?: unknown }) => context?.invocationScope) as never },
    });
    const common = { companyId: "company-a", params: { mode: "echo", requestedCompanyId: "company-a" } };
    try {
      await handle.start();
      await expect(handle.call("resourceLifecycle", { ...common, resourceType: "project", resourceId: "project-a" } as never))
        .resolves.toEqual({ companyId: "company-a", projectGit: { projectId: "project-a" } });
      await expect(handle.call("resourceLifecycle", { ...common, resourceType: "agent", resourceId: "agent-a" } as never))
        .resolves.toEqual({ companyId: "company-a" });
      for (const kind of ["prepare", "inspect", "remove", "finalize"]) {
        const params = { ...common, projectId: "project-a", runId: "run-a", agentId: "agent-a", operation: {
          kind, source: { id: "workspace-a" }, binding: { projectWorkspaceId: "workspace-a" } } };
        await expect(handle.call("workspaceOperation", params as never)).resolves.toEqual({ companyId: "company-a",
          ...(kind === "finalize" ? {} : { projectGit: { projectId: "project-a", workspaceId: "workspace-a", operation: kind,
            ...(kind === "prepare" ? { runId: "run-a", agentId: "agent-a" } : {}) } }) });
      }
      await expect(handle.call("workspaceOperation", { ...common, projectId: "project-a", runId: null, agentId: null,
        operation: { kind: "prepare", source: { id: "workspace-a" } } } as never)).resolves.toEqual({ companyId: "company-a", projectGit: { projectId: "project-a", workspaceId: "workspace-a", operation: "prepare" } });
      await expect(handle.call("workspaceOperation", { ...common, projectId: "project-a", runId: null, agentId: "agent-a",
        operation: { kind: "prepare", source: { id: "workspace-a" } } } as never)).resolves.toEqual({ companyId: "company-a" });
    } finally { await handle.stop().catch(() => undefined); }
  });

  it("passes performAction invocation scope to nested worker host calls", async () => {
    const companiesGet = vi.fn(async (
      params: { companyId: string },
      context?: { invocationScope?: { companyId?: string | null } | null },
    ) => ({
      id: params.companyId,
      scopedCompanyId: context?.invocationScope?.companyId ?? null,
    }));
    const handle = createPluginWorkerHandle("test.plugin", {
      entrypointPath: INVOCATION_SCOPE_WORKER_ENTRYPOINT,
      manifest: TEST_MANIFEST,
      config: {},
      instanceInfo: {
        instanceId: "instance-1",
        hostVersion: "1.0.0",
      },
      apiVersion: 1,
      hostHandlers: {
        "companies.get": companiesGet as never,
      },
    });

    try {
      await handle.start();

      await expect(handle.call("performAction", {
        key: "probe",
        params: {
          mode: "echo",
          requestedCompanyId: "company-a",
        },
        actorContext: {
          type: "agent",
          userId: null,
          agentId: "agent-1",
          runId: "run-1",
          companyId: "company-a",
        },
        renderEnvironment: null,
      })).resolves.toEqual({
        id: "company-a",
        scopedCompanyId: "company-a",
      });
      expect(companiesGet).toHaveBeenCalledWith(
        { companyId: "company-a" },
        { invocationScope: { companyId: "company-a" }, traceparent: undefined, providerSpanBudget: { remaining: 256 } },
      );
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("passes echoed invocation scope to worker-to-host handlers", async () => {
    const companiesGet = vi.fn(async () => ({ id: "company-1" }) as Company);
    const handle = createPluginWorkerHandle("test.plugin", {
      entrypointPath: INVOCATION_SCOPE_WORKER_ENTRYPOINT,
      manifest: TEST_MANIFEST,
      config: {},
      instanceInfo: {
        instanceId: "instance-1",
        hostVersion: "1.0.0",
      },
      apiVersion: 1,
      hostHandlers: {
        "companies.get": companiesGet,
      },
    });

    try {
      await handle.start();

      await expect(handle.call("getData", {
        key: "probe",
        companyId: "company-1",
        params: {
          mode: "echo",
          requestedCompanyId: "company-1",
        },
      } as HostToWorkerMethods["getData"][0])).resolves.toEqual({ id: "company-1" });

      expect(companiesGet).toHaveBeenCalledWith(
        { companyId: "company-1" },
        { invocationScope: { companyId: "company-1" }, traceparent: undefined, providerSpanBudget: { remaining: 256 } },
      );
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("rejects performAction nested host calls that omit the invocation id", async () => {
    const handlers = createHostClientHandlers({
      pluginId: "test.plugin",
      capabilities: ["companies.read"],
      services: {
        companies: {
          list: vi.fn(async () => []),
          get: vi.fn(async (params: { companyId: string }) => ({ id: params.companyId })),
        },
      } as unknown as HostServices,
    });
    const handle = createPluginWorkerHandle("test.plugin", {
      entrypointPath: INVOCATION_SCOPE_WORKER_ENTRYPOINT,
      manifest: TEST_MANIFEST,
      config: {},
      instanceInfo: {
        instanceId: "instance-1",
        hostVersion: "1.0.0",
      },
      apiVersion: 1,
      hostHandlers: handlers,
    });

    try {
      await handle.start();

      await expect(handle.call("performAction", {
        key: "probe",
        params: {
          requestedCompanyId: "company-b",
        },
        actorContext: {
          type: "agent",
          userId: null,
          agentId: "agent-1",
          runId: "run-1",
          companyId: "company-a",
        },
        renderEnvironment: null,
      })).rejects.toMatchObject({
        code: PLUGIN_RPC_ERROR_CODES.INVOCATION_SCOPE_DENIED,
        message: expect.stringContaining("unknown invocation scope"),
      });
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("rejects nested worker host calls that forge an unknown invocation id", async () => {
    const companiesGet = vi.fn(async (params: { companyId: string }) => ({ id: params.companyId }));
    const handlers = createHostClientHandlers({
      pluginId: "test.plugin",
      capabilities: ["companies.read"],
      services: {
        companies: {
          get: companiesGet,
        },
      } as unknown as HostServices,
    });
    const handle = createPluginWorkerHandle("test.plugin", {
      entrypointPath: INVOCATION_SCOPE_WORKER_ENTRYPOINT,
      manifest: TEST_MANIFEST,
      config: {},
      instanceInfo: {
        instanceId: "instance-1",
        hostVersion: "1.0.0",
      },
      apiVersion: 1,
      hostHandlers: handlers,
    });

    try {
      await handle.start();

      await expect(handle.call("performAction", {
        key: "probe",
        params: {
          mode: "unknown",
          requestedCompanyId: "company-a",
        },
        actorContext: {
          type: "agent",
          userId: null,
          agentId: "agent-1",
          runId: "run-1",
          companyId: "company-a",
        },
        renderEnvironment: null,
      })).rejects.toMatchObject({
        code: PLUGIN_RPC_ERROR_CODES.INVOCATION_SCOPE_DENIED,
        message: expect.stringContaining("unknown invocation scope"),
      });
      expect(companiesGet).not.toHaveBeenCalled();
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("rejects missing or unknown invocation ids while a company invocation is active", async () => {
    const companiesGet = vi.fn(async () => ({ id: "company-2" }));
    const hostHandlers = createHostClientHandlers({
      pluginId: "test.plugin",
      capabilities: ["companies.read"],
      services: {
        companies: {
          get: companiesGet,
        },
      } as unknown as HostServices,
    });
    const handle = createPluginWorkerHandle("test.plugin", {
      entrypointPath: INVOCATION_SCOPE_WORKER_ENTRYPOINT,
      manifest: TEST_MANIFEST,
      config: {},
      instanceInfo: {
        instanceId: "instance-1",
        hostVersion: "1.0.0",
      },
      apiVersion: 1,
      hostHandlers,
    });

    try {
      await handle.start();

      for (const mode of ["omit", "unknown"]) {
        await expect(handle.call("getData", {
          key: "probe",
          companyId: "company-1",
          params: {
            mode,
            requestedCompanyId: "company-2",
          },
        } as HostToWorkerMethods["getData"][0])).rejects.toMatchObject({
          code: PLUGIN_RPC_ERROR_CODES.INVOCATION_SCOPE_DENIED,
        });
      }

      expect(companiesGet).not.toHaveBeenCalled();
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });
});


describe("plugin host company context guards", () => {
  it("rejects config and secret calls without host-issued company context before host services run", async () => {
    const configGet = vi.fn(async () => ({ apiKey: "unreachable" }));
    const secretsResolve = vi.fn(async () => "unreachable");
    const handlers = createHostClientHandlers({
      pluginId: "test.plugin",
      capabilities: ["secrets.read-ref"],
      services: {
        config: { get: configGet },
        secrets: { resolve: secretsResolve },
      } as unknown as HostServices,
    });

    await expect(handlers["config.get"]({})).rejects.toMatchObject({
      name: "InvocationScopeDeniedError",
      message: expect.stringContaining("company context is required"),
    });
    await expect(handlers["config.get"]({ companyId: "company-1" })).rejects.toMatchObject({
      name: "InvocationScopeDeniedError",
      message: expect.stringContaining("company context is required"),
    });
    await expect(
      handlers["secrets.resolve"]({
        secretRef: { type: "secret_ref", secretId: "11111111-1111-4111-8111-111111111111" },
      }),
    ).rejects.toMatchObject({
      name: "InvocationScopeDeniedError",
      message: expect.stringContaining("company context is required"),
    });
    await expect(
      handlers["secrets.resolve"]({
        companyId: "company-1",
        secretRef: { type: "secret_ref", secretId: "11111111-1111-4111-8111-111111111111" },
      }),
    ).rejects.toMatchObject({
      name: "InvocationScopeDeniedError",
      message: expect.stringContaining("company context is required"),
    });

    expect(configGet).not.toHaveBeenCalled();
    expect(secretsResolve).not.toHaveBeenCalled();
  });

  it("rejects cross-company config and secret reads in scoped worker invocations before host services run", async () => {
    const configGet = vi.fn(async () => ({ apiKeyRef: "unreachable" }));
    const secretsResolve = vi.fn(async () => "unreachable");
    const hostHandlers = createHostClientHandlers({
      pluginId: "test.plugin",
      capabilities: ["secrets.read-ref"],
      services: {
        config: { get: configGet },
        secrets: { resolve: secretsResolve },
      } as unknown as HostServices,
    });
    const handle = createPluginWorkerHandle("test.plugin", {
      entrypointPath: INVOCATION_SCOPE_WORKER_ENTRYPOINT,
      manifest: TEST_MANIFEST,
      config: {},
      instanceInfo: {
        instanceId: "instance-1",
        hostVersion: "1.0.0",
      },
      apiVersion: 1,
      hostHandlers,
    });

    try {
      await handle.start();

      for (const hostMethod of ["config.get", "secrets.resolve"] as const) {
        await expect(handle.call("performAction", {
          key: "probe",
          params: {
            mode: "echo",
            hostMethod,
            requestedCompanyId: "company-b",
          },
          actorContext: {
            type: "agent",
            userId: null,
            agentId: "agent-1",
            runId: "run-1",
            companyId: "company-a",
          },
          renderEnvironment: null,
        })).rejects.toMatchObject({
          code: PLUGIN_RPC_ERROR_CODES.INVOCATION_SCOPE_DENIED,
          message: expect.stringContaining('requested company "company-b"'),
        });
      }

      expect(configGet).not.toHaveBeenCalled();
      expect(secretsResolve).not.toHaveBeenCalled();
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });
});


describe("plugin proactive company scope (LOOA-629)", () => {
  // A proactive plugin (e.g. the chat gateway) makes company-scoped worker→host
  // calls from its own timers/loops — outside any host-issued invocation, so
  // those calls carry no paperclipInvocationId (the fixture's "omit" mode). The
  // host authorizes a bounded set of companies for such proactive work; calls
  // referencing an authorized company resolve to that scope, all others stay
  // denied. Each case drives a real worker so the nested call flows through the
  // worker manager's context resolution, not just the SDK gate in isolation.
  function makeHandle(overrides?: {
    companiesGet?: ReturnType<typeof vi.fn>;
    stateGet?: ReturnType<typeof vi.fn>;
  }) {
    const companiesGet = overrides?.companiesGet ?? vi.fn(async () => ({ id: "company-1", name: "Co" }));
    const stateGet = overrides?.stateGet ?? vi.fn(async () => ({ value: "ok" }));
    const listLifecycle = vi.fn(async () => [{ id: "1", companyId: "company-1" }]);
    const hostHandlers = createHostClientHandlers({
      pluginId: "test.plugin",
      capabilities: ["companies.read", "plugin.state.read", "events.subscribe"],
      services: {
        companies: { get: companiesGet },
        state: { get: stateGet },
        events: { listLifecycle },
      } as unknown as HostServices,
    });
    const handle = createPluginWorkerHandle("test.plugin", {
      entrypointPath: INVOCATION_SCOPE_WORKER_ENTRYPOINT,
      manifest: TEST_MANIFEST,
      config: {},
      instanceInfo: { instanceId: "instance-1", hostVersion: "1.0.0" },
      apiVersion: 1,
      hostHandlers,
    });
    return { handle, companiesGet, stateGet, listLifecycle };
  }

  it("denies a proactive company-scoped call when no company is authorized", async () => {
    const { handle, companiesGet } = makeHandle();
    try {
      await handle.start();
      await expect(handle.call("getData", {
        params: { mode: "omit", hostMethod: "companies.get", requestedCompanyId: "company-1" },
      } as unknown as HostToWorkerMethods["getData"][0])).rejects.toMatchObject({
        code: PLUGIN_RPC_ERROR_CODES.INVOCATION_SCOPE_DENIED,
        message: expect.stringContaining("company context is required"),
      });
      expect(companiesGet).not.toHaveBeenCalled();
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("admits lifecycle polling only for configured proactive companies", async () => {
    const { handle, listLifecycle } = makeHandle();
    const poll = (companyId: string) => handle.call("getData", {
      params: { mode: "omit", hostMethod: "events.listLifecycle", requestedCompanyId: companyId },
    } as unknown as HostToWorkerMethods["getData"][0]);
    try {
      await handle.start();
      await expect(poll("company-1")).rejects.toMatchObject({ code: PLUGIN_RPC_ERROR_CODES.INVOCATION_SCOPE_DENIED });
      handle.setProactiveCompanyScopes(["company-1"]);
      expect(await poll("company-1")).toEqual([{ id: "1", companyId: "company-1" }]);
      await expect(poll("company-2")).rejects.toMatchObject({ code: PLUGIN_RPC_ERROR_CODES.INVOCATION_SCOPE_DENIED });
      handle.setProactiveCompanyScopes([]);
      await expect(poll("company-1")).rejects.toMatchObject({ code: PLUGIN_RPC_ERROR_CODES.INVOCATION_SCOPE_DENIED });
      expect(listLifecycle).toHaveBeenCalledTimes(1);
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("admits a proactive company-scoped call for an authorized company", async () => {
    const { handle, companiesGet } = makeHandle();
    try {
      await handle.start();
      handle.setProactiveCompanyScopes(["company-1"]);
      const result = await handle.call("getData", {
        params: { mode: "omit", hostMethod: "companies.get", requestedCompanyId: "company-1" },
      } as unknown as HostToWorkerMethods["getData"][0]);
      expect(result).toMatchObject({ id: "company-1" });
      expect(companiesGet).toHaveBeenCalledTimes(1);
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("admits a proactive state.get (scopeKind company) for an authorized company", async () => {
    const { handle, stateGet } = makeHandle();
    try {
      await handle.start();
      handle.setProactiveCompanyScopes(["company-1"]);
      const result = await handle.call("getData", {
        params: { mode: "omit", hostMethod: "state.get", requestedCompanyId: "company-1" },
      } as unknown as HostToWorkerMethods["getData"][0]);
      expect(result).toMatchObject({ value: "ok" });
      expect(stateGet).toHaveBeenCalledTimes(1);
      expect(stateGet.mock.calls[0]?.[0]).toMatchObject({ scopeKind: "company", scopeId: "company-1" });
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("still denies proactive calls for a company outside the authorized set", async () => {
    const { handle, companiesGet } = makeHandle();
    try {
      await handle.start();
      handle.setProactiveCompanyScopes(["company-1"]);
      await expect(handle.call("getData", {
        params: { mode: "omit", hostMethod: "companies.get", requestedCompanyId: "company-2" },
      } as unknown as HostToWorkerMethods["getData"][0])).rejects.toMatchObject({
        code: PLUGIN_RPC_ERROR_CODES.INVOCATION_SCOPE_DENIED,
        message: expect.stringContaining("company context is required"),
      });
      expect(companiesGet).not.toHaveBeenCalled();
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("revokes proactive access when the authorized set is cleared", async () => {
    const { handle, companiesGet } = makeHandle();
    try {
      await handle.start();
      handle.setProactiveCompanyScopes(["company-1"]);
      await handle.call("getData", {
        params: { mode: "omit", hostMethod: "companies.get", requestedCompanyId: "company-1" },
      } as unknown as HostToWorkerMethods["getData"][0]);
      expect(companiesGet).toHaveBeenCalledTimes(1);

      handle.setProactiveCompanyScopes([]);
      await expect(handle.call("getData", {
        params: { mode: "omit", hostMethod: "companies.get", requestedCompanyId: "company-1" },
      } as unknown as HostToWorkerMethods["getData"][0])).rejects.toMatchObject({
        code: PLUGIN_RPC_ERROR_CODES.INVOCATION_SCOPE_DENIED,
      });
      expect(companiesGet).toHaveBeenCalledTimes(1);
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });
});

describe("plugin proactive events.subscribe: options-seeded scope + filter parity (LOOA-695)", () => {
  // The chat gateway subscribes to issue.*/approval.* from setup() via
  // ctx.events.on(name, { companyId }, fn), which the SDK turns into a proactive
  // (no-invocation) events.subscribe whose company lives in params.filter.companyId.
  // Two things had to hold for outbound push to work and neither did before this
  // fix:
  //   (1) the authorized company set must be present BEFORE the worker's setup()
  //       calls land — the loader used to set it only after startWorker resolved,
  //       so it was seeded via WorkerStartOptions at handle creation instead;
  //   (2) the host's proactive-scope resolver (referencedCompanyId) must derive
  //       events.subscribe's company from filter.companyId, mirroring the SDK
  //       gate (requestedCompanyScope).
  // Each case drives a real worker so the subscribe flows through the manager's
  // context resolution exactly as it does in production.
  function makeEventsHandle(seededCompanies: readonly string[]) {
    const eventsSubscribe = vi.fn(async (_params: unknown) => undefined);
    const hostHandlers = createHostClientHandlers({
      pluginId: "test.plugin",
      capabilities: ["events.subscribe"],
      services: {
        events: { subscribe: eventsSubscribe },
      } as unknown as HostServices,
    });
    const handle = createPluginWorkerHandle("test.plugin", {
      entrypointPath: INVOCATION_SCOPE_WORKER_ENTRYPOINT,
      manifest: TEST_MANIFEST,
      config: {},
      instanceInfo: { instanceId: "instance-1", hostVersion: "1.0.0" },
      apiVersion: 1,
      hostHandlers,
      // Seeded at handle creation — the loader now threads the plugin's
      // configured companies here BEFORE startWorker, never via a post-start
      // setProactiveCompanyScopes call.
      proactiveCompanyScopes: seededCompanies,
    });
    return { handle, eventsSubscribe };
  }

  it("admits a setup()-time events.subscribe for a company seeded via WorkerStartOptions", async () => {
    const { handle, eventsSubscribe } = makeEventsHandle(["company-1"]);
    try {
      await handle.start();
      // No post-start setProactiveCompanyScopes call: the seed from options is
      // the only authorization, exactly as it is when the worker subscribes
      // during setup() before startWorker resolves.
      await handle.call("getData", {
        params: { mode: "omit", hostMethod: "events.subscribe", requestedCompanyId: "company-1" },
      } as unknown as HostToWorkerMethods["getData"][0]);
      expect(eventsSubscribe).toHaveBeenCalledTimes(1);
      expect(eventsSubscribe.mock.calls[0]?.[0]).toMatchObject({
        filter: { companyId: "company-1" },
      });
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("still denies a proactive events.subscribe for a company outside the seeded set", async () => {
    const { handle, eventsSubscribe } = makeEventsHandle(["company-1"]);
    try {
      await handle.start();
      await expect(handle.call("getData", {
        params: { mode: "omit", hostMethod: "events.subscribe", requestedCompanyId: "company-2" },
      } as unknown as HostToWorkerMethods["getData"][0])).rejects.toMatchObject({
        code: PLUGIN_RPC_ERROR_CODES.INVOCATION_SCOPE_DENIED,
        message: expect.stringContaining("company context is required"),
      });
      expect(eventsSubscribe).not.toHaveBeenCalled();
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("denies a proactive events.subscribe when no company is seeded", async () => {
    const { handle, eventsSubscribe } = makeEventsHandle([]);
    try {
      await handle.start();
      await expect(handle.call("getData", {
        params: { mode: "omit", hostMethod: "events.subscribe", requestedCompanyId: "company-1" },
      } as unknown as HostToWorkerMethods["getData"][0])).rejects.toMatchObject({
        code: PLUGIN_RPC_ERROR_CODES.INVOCATION_SCOPE_DENIED,
      });
      expect(eventsSubscribe).not.toHaveBeenCalled();
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });
});

// ---------------------------------------------------------------------------
// execute.log worker→host notification route
// ---------------------------------------------------------------------------

function makeExecuteLogHandle(extra?: Record<string, unknown>) {
  return createPluginWorkerHandle("test.plugin", {
    entrypointPath: EXECUTE_LOG_WORKER_ENTRYPOINT,
    manifest: TEST_MANIFEST,
    config: {},
    instanceInfo: { instanceId: "instance-1", hostVersion: "1.0.0" },
    apiVersion: 1,
    hostHandlers: {},
    ...extra,
  });
}

function executeParams(
  overrides: Record<string, unknown>,
): HostToWorkerMethods["environmentExecute"][0] {
  return {
    driverKey: "daytona",
    companyId: "company-1",
    environmentId: "env-1",
    config: {},
    lease: { providerLeaseId: "lease-1" },
    command: "echo",
    ...overrides,
  } as unknown as HostToWorkerMethods["environmentExecute"][0];
}

describe("plugin worker manager execute.log route", () => {
  it("delivers ordered execute.log chunks to the execute log sink", async () => {
    const handle = makeExecuteLogHandle();
    const sink = vi.fn();
    try {
      await handle.start();
      const result = await handle.call(
        "environmentExecute",
        executeParams({
          logs: [
            { stream: "stdout", chunk: "one" },
            { stream: "stderr", chunk: "two" },
            { stream: "stdout", chunk: "three" },
          ],
          finalStdout: "onethree",
          finalStderr: "two",
        }),
        undefined,
        sink,
      );
      expect(result).toMatchObject({ exitCode: 0 });
      expect(sink.mock.calls).toEqual([
        ["stdout", "one"],
        ["stderr", "two"],
        ["stdout", "three"],
      ]);
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("drops an execute.log chunk with a forged or missing invocation id", async () => {
    const handle = makeExecuteLogHandle();
    const sink = vi.fn();
    try {
      await handle.start();
      await handle.call(
        "environmentExecute",
        executeParams({
          logs: [
            { stream: "stdout", chunk: "valid", tag: "echo" },
            { stream: "stdout", chunk: "forged", tag: "unknown" },
            { stream: "stdout", chunk: "orphan", tag: "none" },
          ],
        }),
        undefined,
        sink,
      );
      // Only the chunk that carries this call's own host-issued id is delivered.
      expect(sink.mock.calls).toEqual([["stdout", "valid"]]);
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("drops an execute.log chunk with an invalid stream name or an empty chunk", async () => {
    const handle = makeExecuteLogHandle();
    const sink = vi.fn();
    try {
      await handle.start();
      await handle.call(
        "environmentExecute",
        executeParams({
          logs: [
            { stream: "stdout", chunk: "keep" },
            { stream: "bogus", chunk: "dropped-stream" },
            { stream: "stdout", chunk: "" },
          ],
        }),
        undefined,
        sink,
      );
      expect(sink.mock.calls).toEqual([["stdout", "keep"]]);
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("routes two concurrent same-company execute calls to their own sink only", async () => {
    const handle = makeExecuteLogHandle();
    const sinkA = vi.fn();
    const sinkB = vi.fn();
    try {
      await handle.start();
      const callA = handle.call(
        "environmentExecute",
        executeParams({
          companyId: "company-1",
          logs: [{ stream: "stdout", chunk: "a1" }],
          delayMs: 40,
        }),
        undefined,
        sinkA,
      );
      const callB = handle.call(
        "environmentExecute",
        executeParams({
          companyId: "company-1",
          logs: [{ stream: "stdout", chunk: "b1" }],
          delayMs: 40,
        }),
        undefined,
        sinkB,
      );
      await Promise.all([callA, callB]);
      // Both calls belong to one company, so the shared pipe stays
      // single-company and each chunk reaches only its own call's sink.
      expect(sinkA.mock.calls).toEqual([["stdout", "a1"]]);
      expect(sinkB.mock.calls).toEqual([["stdout", "b1"]]);
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("fails closed and never delivers execute.log across companies, even with a forged peer id", async () => {
    // A single worker process serves every company, so it knows both companies'
    // active invocation ids. While company B's execute stays active, company A's
    // execute forges B's known, valid id and aims a chunk at B's route. The host
    // must not deliver it to B. Before the exact-company-scope validation, the
    // route lookup by the worker-supplied id delivered the forged chunk to B.
    const handle = makeExecuteLogHandle();
    const sinkA = vi.fn();
    const sinkB = vi.fn();
    try {
      await handle.start();
      // Company B opens first and stays active (delayed finish), so its route is
      // registered and known to the worker when company A runs.
      const callB = handle.call(
        "environmentExecute",
        executeParams({ companyId: "company-b", logs: [], delayMs: 200 }),
        undefined,
        sinkB,
      );
      // Let the worker process B's execute, so it records B's id as the peer id.
      await new Promise((resolve) => setTimeout(resolve, 40));
      const callA = handle.call(
        "environmentExecute",
        executeParams({
          companyId: "company-a",
          logs: [{ stream: "stdout", chunk: "forged-into-b", tag: "forge-previous" }],
        }),
        undefined,
        sinkA,
      );
      await Promise.all([callA, callB]);
      expect(sinkB).not.toHaveBeenCalled();
      expect(sinkA).not.toHaveBeenCalled();
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("drops execute.log chunks once one execute call exceeds its output budget", async () => {
    // Bound the total streamed output for one execute call. Past the ceiling the
    // host drops further chunks, so one runaway or hostile execution cannot flood
    // the host without limit.
    const handle = makeExecuteLogHandle({
      executeLogLimits: { maxTotalCharsPerExecute: 10 },
    });
    const sink = vi.fn();
    try {
      await handle.start();
      await handle.call(
        "environmentExecute",
        executeParams({
          logs: [
            { stream: "stdout", chunk: "aaaaa" }, // total 5 → delivered
            { stream: "stdout", chunk: "bbbbb" }, // total 10 → delivered
            { stream: "stdout", chunk: "c" }, // total 11 > 10 → dropped
          ],
        }),
        undefined,
        sink,
      );
      expect(sink.mock.calls).toEqual([
        ["stdout", "aaaaa"],
        ["stdout", "bbbbb"],
      ]);
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("drops an over-length worker line before parsing it and keeps serving the call", async () => {
    // Enforce the framing bound before the JSON parse. The oversized note is a
    // valid execute.log line for this call's own id, so without the pre-parse
    // guard the host would parse and deliver it. The normal note stays under the
    // limit and reaches the sink, and the call still completes.
    const handle = makeExecuteLogHandle({
      executeLogLimits: { maxIncomingMessageChars: 400 },
    });
    const sink = vi.fn();
    try {
      await handle.start();
      const result = await handle.call(
        "environmentExecute",
        executeParams({
          oversizedLogChunkChars: 1_000,
          logs: [{ stream: "stdout", chunk: "kept" }],
          finalStdout: "kept",
        }),
        undefined,
        sink,
      );
      expect(result).toMatchObject({ exitCode: 0 });
      expect(sink.mock.calls).toEqual([["stdout", "kept"]]);
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("completes an execute call that sends no execute.log notification", async () => {
    const handle = makeExecuteLogHandle();
    const sink = vi.fn();
    try {
      await handle.start();
      const result = await handle.call(
        "environmentExecute",
        executeParams({ logs: [], finalStdout: "done" }),
        undefined,
        sink,
      );
      expect(result).toMatchObject({ exitCode: 0, stdout: "done" });
      expect(sink).not.toHaveBeenCalled();
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("does not throw when execute.log arrives but no sink is registered", async () => {
    const handle = makeExecuteLogHandle();
    try {
      await handle.start();
      const result = await handle.call(
        "environmentExecute",
        executeParams({ logs: [{ stream: "stdout", chunk: "no-sink" }] }),
      );
      expect(result).toMatchObject({ exitCode: 0 });
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });
});

// ---------------------------------------------------------------------------
// Host-owned setup-token login pseudo-terminal route gate
// ---------------------------------------------------------------------------

const LOGIN_PTY_WORKER_ENTRYPOINT = path.join(
  FIXTURES_DIR,
  "plugin-worker-login-pty.cjs",
);

function makeLoginPtyHandle(extra?: Record<string, unknown>) {
  return createPluginWorkerHandle("test.plugin", {
    entrypointPath: LOGIN_PTY_WORKER_ENTRYPOINT,
    manifest: TEST_MANIFEST,
    config: {},
    instanceInfo: { instanceId: "instance-1", hostVersion: "1.0.0" },
    apiVersion: 1,
    hostHandlers: {},
    ...extra,
  });
}

// One valid session home. The shape is the fixed root, one slash, and one UUID.
const PTY_SESSION_HOME = "/tmp/paperclip-adapter-login/11111111-2222-4333-8444-555555555555";

function ptyOpenInput(directive: unknown) {
  return {
    driverKey: "daytona",
    companyId: "company-1",
    environmentId: "env-1",
    // The test directive rides in `providerLeaseId`, an opaque field the manager
    // forwards to the worker unchanged. The manager carries the closed command
    // key and the validated session home; it carries no command string.
    providerLeaseId: JSON.stringify(directive),
    loginCommandKey: "claude" as const,
    sessionHome: PTY_SESSION_HOME,
  };
}

describe("plugin worker manager setup-token pty route gate", () => {
  it("rejects a command key that is not in the closed set before the worker call", async () => {
    const handle = makeLoginPtyHandle();
    try {
      await handle.start();
      // The provider driver key routes the worker; it confers no command
      // authority. A key outside the closed set rejects with one fixed non-secret
      // error before the worker call, so a caller cannot select an arbitrary
      // command in the sandbox pseudo-terminal.
      await expect(
        handle.openLoginPtySession({
          driverKey: "daytona",
          companyId: "company-1",
          environmentId: "env-1",
          providerLeaseId: JSON.stringify({ mode: "normal" }),
          loginCommandKey: "gemini" as unknown as "claude",
          sessionHome: PTY_SESSION_HOME,
        }),
      ).rejects.toThrow("LOGIN_PTY_COMMAND_NOT_ALLOWED");
      // The rejected open never consumed the single route, so a later open with a
      // closed key still succeeds.
      const session = await handle.openLoginPtySession(
        ptyOpenInput({ mode: "normal" }),
      );
      expect(session).toBeDefined();
      await session.close();
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("rejects a malformed session home before the worker call", async () => {
    const handle = makeLoginPtyHandle();
    try {
      await handle.start();
      // The host revalidates the server-controlled session home shape before the
      // worker RPC. A traversal candidate fails closed at the last host gate.
      await expect(
        handle.openLoginPtySession({
          driverKey: "daytona",
          companyId: "company-1",
          environmentId: "env-1",
          providerLeaseId: JSON.stringify({ mode: "normal" }),
          loginCommandKey: "claude" as const,
          sessionHome: "/tmp/paperclip-adapter-login/../etc",
        }),
      ).rejects.toThrow("LOGIN_PTY_INVALID_SESSION_HOME");
      // The rejected open never consumed the single route.
      const session = await handle.openLoginPtySession(
        ptyOpenInput({ mode: "normal" }),
      );
      expect(session).toBeDefined();
      await session.close();
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("permits two concurrent credential pseudo-terminals on one worker", async () => {
    const handle = makeLoginPtyHandle();
    try {
      await handle.start();
      // Neither open waits on the other. Both return a live route on the same
      // worker, so a second owner is never blocked by a first owner's session.
      const first = await handle.openLoginPtySession(
        ptyOpenInput({ mode: "normal", workerSessionId: "ws-A" }),
      );
      const second = await handle.openLoginPtySession(
        ptyOpenInput({ mode: "normal", workerSessionId: "ws-B" }),
      );
      expect(first).toBeDefined();
      expect(second).toBeDefined();
      await first.close();
      await second.close();
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("delivers output only for the exact bound worker session id and drops a mismatch", async () => {
    const handle = makeLoginPtyHandle();
    try {
      await handle.start();
      const session = await handle.openLoginPtySession(
        ptyOpenInput({
          workerSessionId: "ws-A",
          outputs: [
            { chunk: "good-1" },
            { chunk: "forged", sid: "ws-EVIL" },
            { chunk: "good-2" },
          ],
          exitCode: 0,
        }),
      );
      const chunks: string[] = [];
      session.onData((chunk) => chunks.push(chunk));
      await expect(session.wait()).resolves.toEqual({ exitCode: 0 });
      // The forged notification carries a wrong worker session id, so the host
      // drops it. Only the two bound chunks reach the listener, in order.
      expect(chunks).toEqual(["good-1", "good-2"]);
      await session.close();
    } finally {
      await handle.stop().catch(() => undefined);
    }
  }, 15_000);

  it("routes delayed input to the worker and back to the listener", async () => {
    const handle = makeLoginPtyHandle();
    try {
      await handle.start();
      const session = await handle.openLoginPtySession(
        ptyOpenInput({ workerSessionId: "ws-A" }),
      );
      const chunks: string[] = [];
      session.onData((chunk) => chunks.push(chunk));
      session.write("browser-code");
      // The worker echoes the input as one output notification for the bound
      // session, so the listener receives it.
      await vi.waitFor(() => expect(chunks).toContain("echo:browser-code"));
      await session.close();
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("terminalizes the route when the cumulative output passes the per-route bound", async () => {
    const handle = makeLoginPtyHandle({
      loginPtyLimits: { maxTotalChars: 10 },
    });
    try {
      await handle.start();
      const session = await handle.openLoginPtySession(
        ptyOpenInput({ mode: "normal" }),
      );
      const chunks: string[] = [];
      session.onData((chunk) => chunks.push(chunk));
      // Each empty input produces the five-character `echo:` chunk. Attach the
      // listener first, then drive exactly two accepted chunks and one overflow
      // so process scheduling cannot move output ahead of listener registration.
      session.write("");
      session.write("");
      session.write("");
      // The per-route bound terminalizes the route, so the login wait resolves
      // with a null exit code and the third chunk never reaches the listener.
      await expect(session.wait()).resolves.toEqual({ exitCode: null });
      expect(chunks).toEqual(["echo:", "echo:"]);
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("terminalizes and fails closed on a malformed open reply, then admits a later open", async () => {
    const handle = makeLoginPtyHandle();
    try {
      await handle.start();
      await expect(
        handle.openLoginPtySession(ptyOpenInput({ mode: "malformed-open" })),
      ).rejects.toThrow("LOGIN_PTY_OPEN_FAILED");
      // The terminalize closed the route by the host route id and the worker
      // acknowledged the close, so a later open is admitted.
      const session = await handle.openLoginPtySession(
        ptyOpenInput({ mode: "normal" }),
      );
      expect(session).toBeDefined();
      await session.close();
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("terminalizes the route on an open timeout", async () => {
    const handle = makeLoginPtyHandle({
      loginPtyLimits: { openTimeoutMs: 200 },
    });
    try {
      await handle.start();
      await expect(
        handle.openLoginPtySession(ptyOpenInput({ mode: "no-open-reply" })),
      ).rejects.toThrow();
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("binds the worker session id one time and ignores a duplicate open reply", async () => {
    const handle = makeLoginPtyHandle();
    try {
      await handle.start();
      const session = await handle.openLoginPtySession(
        ptyOpenInput({
          mode: "duplicate-open-reply",
          workerSessionId: "ws-A",
          outputs: [{ chunk: "hello" }],
          exitCode: 0,
        }),
      );
      const chunks: string[] = [];
      session.onData((chunk) => chunks.push(chunk));
      // The duplicate open reply never rebinds or reopens the route, so the
      // session runs normally on the one bind.
      await expect(session.wait()).resolves.toEqual({ exitCode: 0 });
      expect(chunks).toEqual(["hello"]);
      await session.close();
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("closes the route with a fixed exit when the worker exits", async () => {
    const handle = makeLoginPtyHandle();
    try {
      await handle.start();
      const session = await handle.openLoginPtySession(
        ptyOpenInput({ mode: "normal" }),
      );
      const waitResult = session.wait();
      await handle.stop();
      // A worker exit closes the one route and resolves the login wait with the
      // fixed non-secret exit.
      await expect(waitResult).resolves.toEqual({ exitCode: null });
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("retires the worker on an unconfirmed close acknowledgement", async () => {
    const handle = makeLoginPtyHandle({
      loginPtyLimits: { closeTimeoutMs: 200 },
    });
    try {
      await handle.start();
      const exited = new Promise<void>((resolve) => {
        handle.on("exit", () => resolve());
      });
      const session = await handle.openLoginPtySession(
        ptyOpenInput({ mode: "normal", closeMode: "bad-ack" }),
      );
      await session.close();
      // The close acknowledgement carried a mismatched host route id, so the host
      // fails closed and retires the worker before any reuse.
      await exited;
      await expect(
        handle.openLoginPtySession(ptyOpenInput({ mode: "normal" })),
      ).rejects.toThrow();
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });
});

// ---------------------------------------------------------------------------
// Login pseudo-terminal concurrency
// ---------------------------------------------------------------------------
// One shared plugin worker now holds more than one live login pseudo-terminal
// route at once, so a second owner is never blocked by a first owner's
// session. The host resolves an output or an exit notification by the host
// route identifier first, then checks the bound worker session identifier,
// so each route receives only its own data even while another route on the
// same worker is live.

describe("plugin worker manager login pseudo-terminal concurrency", () => {
  it("delivers output to each concurrent route only, with no cross-talk", async () => {
    const handle = makeLoginPtyHandle();
    try {
      await handle.start();
      const routeA = await handle.openLoginPtySession(
        ptyOpenInput({
          workerSessionId: "ws-A",
          outputs: [{ chunk: "a-1" }],
          exitCode: 0,
        }),
      );
      const routeB = await handle.openLoginPtySession(
        ptyOpenInput({
          workerSessionId: "ws-B",
          outputs: [{ chunk: "b-1" }],
          exitCode: 0,
        }),
      );
      const aChunks: string[] = [];
      const bChunks: string[] = [];
      routeA.onData((chunk) => aChunks.push(chunk));
      routeB.onData((chunk) => bChunks.push(chunk));
      await expect(routeA.wait()).resolves.toEqual({ exitCode: 0 });
      await expect(routeB.wait()).resolves.toEqual({ exitCode: 0 });
      // The host resolves each notification by its own host route identifier, so
      // neither route ever sees the other's chunk.
      expect(aChunks).toEqual(["a-1"]);
      expect(bChunks).toEqual(["b-1"]);
      await routeA.close();
      await routeB.close();
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("settles the exit of one route only, while a second concurrent route stays live", async () => {
    const handle = makeLoginPtyHandle();
    try {
      await handle.start();
      const routeA = await handle.openLoginPtySession(
        ptyOpenInput({ workerSessionId: "ws-A" }),
      );
      const routeB = await handle.openLoginPtySession(
        ptyOpenInput({ workerSessionId: "ws-B", exitCode: 0 }),
      );
      await expect(routeB.wait()).resolves.toEqual({ exitCode: 0 });
      // Route A never received an exit, so its wait is still pending. Race it
      // against a short delay to prove it has not settled.
      const stillPending = await Promise.race([
        routeA.wait().then(() => "settled"),
        new Promise((resolve) => setTimeout(() => resolve("pending"), 50)),
      ]);
      expect(stillPending).toBe("pending");
      await routeA.close();
      await routeB.close();
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("drops a swapped (hostRouteId, workerSessionId) notification and delivers it to neither route", async () => {
    const handle = makeLoginPtyHandle();
    try {
      await handle.start();
      const routeA = await handle.openLoginPtySession(
        ptyOpenInput({ workerSessionId: "ws-A" }),
      );
      // Route B emits one output that carries route A's host route identifier
      // but route B's own worker session identifier — a swapped pair. The host
      // resolves route A by the host route identifier, then finds route B's
      // worker session identifier does not match route A's bound identifier,
      // so it drops the notification. It never reaches route A, and route B
      // never sent it under its own host route identifier, so it never
      // reaches route B either.
      const routeB = await handle.openLoginPtySession(
        ptyOpenInput({
          workerSessionId: "ws-B",
          outputs: [{ chunk: "swapped", crossRoute: true }],
        }),
      );
      const aChunks: string[] = [];
      const bChunks: string[] = [];
      routeA.onData((chunk) => aChunks.push(chunk));
      routeB.onData((chunk) => bChunks.push(chunk));
      // Give the swapped notification time to arrive and be dropped.
      await new Promise((resolve) => setTimeout(resolve, 60));
      expect(aChunks).toEqual([]);
      expect(bChunks).toEqual([]);
      await routeA.close();
      await routeB.close();
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("drops an output notification for an unknown host route identifier", async () => {
    const handle = makeLoginPtyHandle();
    try {
      await handle.start();
      const session = await handle.openLoginPtySession(
        ptyOpenInput({
          workerSessionId: "ws-A",
          sequence: [
            { type: "output", chunk: "ghost", hostRouteId: "totally-unknown-route" },
            { type: "output", chunk: "good" },
          ],
        }),
      );
      const chunks: string[] = [];
      session.onData((chunk) => chunks.push(chunk));
      await vi.waitFor(() => expect(chunks).toContain("good"));
      // The unknown host route identifier resolves to no route on this worker,
      // so the host drops it before it can reach any listener.
      expect(chunks).toEqual(["good"]);
      await session.close();
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("replays a pre-bind output record to its own route while a second route is already open", async () => {
    const handle = makeLoginPtyHandle();
    try {
      await handle.start();
      const routeA = await handle.openLoginPtySession(
        ptyOpenInput({ workerSessionId: "ws-A" }),
      );
      // Route B's fixture writes its open reply and its output notification in
      // one stdout write, so the host reads both before route B's bind, while
      // route A is already open. The bind replays the held record into route
      // B's own queue; it never reaches route A.
      const routeB = await handle.openLoginPtySession(
        ptyOpenInput({
          batchWithOpenReply: true,
          workerSessionId: "ws-B",
          outputs: [{ chunk: "b-batched" }],
        }),
      );
      const aChunks: string[] = [];
      const bChunks: string[] = [];
      routeA.onData((chunk) => aChunks.push(chunk));
      routeB.onData((chunk) => bChunks.push(chunk));
      expect(aChunks).toEqual([]);
      expect(bChunks).toEqual(["b-batched"]);
      await routeA.close();
      await routeB.close();
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("closes one route without affecting a second concurrent route on the same worker", async () => {
    const handle = makeLoginPtyHandle();
    try {
      await handle.start();
      const routeA = await handle.openLoginPtySession(
        ptyOpenInput({ workerSessionId: "ws-A" }),
      );
      const routeB = await handle.openLoginPtySession(
        ptyOpenInput({ workerSessionId: "ws-B" }),
      );
      await routeA.close();
      // Route B is still live: writing to it still round-trips through the
      // worker and back to the listener.
      const bChunks: string[] = [];
      routeB.onData((chunk) => bChunks.push(chunk));
      routeB.write("still-here");
      await vi.waitFor(() => expect(bChunks).toContain("echo:still-here"));
      await routeB.close();
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("settles both concurrent routes exactly once when the worker exits", async () => {
    const handle = makeLoginPtyHandle();
    try {
      await handle.start();
      const routeA = await handle.openLoginPtySession(
        ptyOpenInput({ workerSessionId: "ws-A" }),
      );
      const routeB = await handle.openLoginPtySession(
        ptyOpenInput({ workerSessionId: "ws-B" }),
      );
      const waitA = routeA.wait();
      const waitB = routeB.wait();
      await handle.stop();
      // The worker exit closes every route it still holds and resolves each
      // login wait with the fixed non-secret exit, in one sweep.
      await expect(waitA).resolves.toEqual({ exitCode: null });
      await expect(waitB).resolves.toEqual({ exitCode: null });
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("retires the worker on an unconfirmed close, settling every concurrent route and logging no raw output", async () => {
    const handle = makeLoginPtyHandle({
      loginPtyLimits: { closeTimeoutMs: 200 },
    });
    const secretMarker = "super-secret-login-code-must-never-reach-a-log-line";
    vi.mocked(logger.warn).mockClear();
    vi.mocked(logger.error).mockClear();
    vi.mocked(logger.info).mockClear();
    vi.mocked(logger.debug).mockClear();
    try {
      await handle.start();
      const exited = new Promise<void>((resolve) => {
        handle.on("exit", () => resolve());
      });
      const routeA = await handle.openLoginPtySession(
        ptyOpenInput({ workerSessionId: "ws-A", closeMode: "bad-ack" }),
      );
      const routeB = await handle.openLoginPtySession(
        ptyOpenInput({ workerSessionId: "ws-B", outputs: [{ chunk: secretMarker }] }),
      );
      const waitB = routeB.wait();
      await routeA.close();
      // Route A's close acknowledgement carried a mismatched host route id, so
      // the host fails closed and retires the whole worker before any reuse.
      // That retirement settles route B too, even though B's own close was
      // never called.
      await exited;
      await expect(waitB).resolves.toEqual({ exitCode: null });
      await expect(
        handle.openLoginPtySession(ptyOpenInput({ mode: "normal" })),
      ).rejects.toThrow();
      const loggedText = [
        ...vi.mocked(logger.warn).mock.calls,
        ...vi.mocked(logger.error).mock.calls,
        ...vi.mocked(logger.info).mock.calls,
        ...vi.mocked(logger.debug).mock.calls,
      ]
        .flat()
        .map((arg) => JSON.stringify(arg))
        .join("\n");
      expect(loggedText).not.toContain(secretMarker);
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });
});

// ---------------------------------------------------------------------------
// The missing-hostRouteId diagnostic. `hostRouteId` is the routing key the
// current protocol tags every login pseudo-terminal notification with, but a
// plugin build old enough to predate it still tags the same notification with
// the worker session identifier, the sole routing key the previous protocol
// used. The host warns once about the old build, then still resolves the
// route by that identifier, so a legacy worker keeps its login output and its
// exit notification instead of losing them.
// ---------------------------------------------------------------------------

describe("plugin worker manager login pseudo-terminal missing hostRouteId diagnostic", () => {
  it("delivers output from a legacy worker with no hostRouteId, resolved by the worker session id, and warns once", async () => {
    const handle = makeLoginPtyHandle();
    vi.mocked(logger.warn).mockClear();
    try {
      await handle.start();
      const chunks: string[] = [];
      const route = await handle.openLoginPtySession(
        ptyOpenInput({
          workerSessionId: "ws-A",
          emitOnInput: true,
          outputs: [{ chunk: "legacy-output", omitHostRouteId: true }],
        }),
      );
      route.onData((chunk) => chunks.push(chunk));
      // Legacy notifications require the open reply to bind the worker ID.
      route.write("emit-scripted-output");
      await vi.waitFor(() => expect(chunks).toContain("legacy-output"));

      const warnCalls = vi.mocked(logger.warn).mock.calls.flat().map((arg) => JSON.stringify(arg));
      const matches = warnCalls.filter((call) => call.includes("hostRouteId"));
      expect(matches).toHaveLength(1);
      expect(matches[0]).toContain("plugin build is too old");
      // No identifier and no raw output in the warning.
      expect(matches[0]).not.toContain("legacy-output");
      expect(matches[0]).not.toContain("ws-A");

      await route.close();
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("settles the login wait on a legacy worker's exit notification with no hostRouteId", async () => {
    const handle = makeLoginPtyHandle();
    try {
      await handle.start();
      const route = await handle.openLoginPtySession(
        ptyOpenInput({ workerSessionId: "ws-A", exitCode: 0, omitHostRouteIdOnExit: true, emitOnInput: true }),
      );
      route.write("emit-scripted-exit");
      await expect(route.wait()).resolves.toEqual({ exitCode: 0 });
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("repeats the warning no more than one time for one worker", async () => {
    const handle = makeLoginPtyHandle();
    vi.mocked(logger.warn).mockClear();
    try {
      await handle.start();
      const route = await handle.openLoginPtySession(
        ptyOpenInput({
          workerSessionId: "ws-A",
          outputs: [
            { chunk: "one", omitHostRouteId: true },
            { chunk: "two", omitHostRouteId: true },
            { chunk: "three", omitHostRouteId: true },
          ],
        }),
      );
      // Give every notification time to arrive.
      await new Promise((resolve) => setTimeout(resolve, 60));

      const warnCalls = vi.mocked(logger.warn).mock.calls.flat().map((arg) => JSON.stringify(arg));
      const matches = warnCalls.filter((call) => call.includes("hostRouteId"));
      expect(matches).toHaveLength(1);

      await route.close();
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("drops a message with no hostRouteId and no worker session id", async () => {
    const handle = makeLoginPtyHandle();
    try {
      await handle.start();
      const chunks: string[] = [];
      const route = await handle.openLoginPtySession(
        ptyOpenInput({
          workerSessionId: "ws-A",
          outputs: [
            { chunk: "unroutable", omitHostRouteId: true, sid: "" },
            { chunk: "good" },
          ],
        }),
      );
      route.onData((chunk) => chunks.push(chunk));
      await vi.waitFor(() => expect(chunks).toContain("good"));
      expect(chunks).toEqual(["good"]);
      await route.close();
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("drops a no-hostRouteId message naming a concurrent route's session instead of cross-delivering it", async () => {
    const handle = makeLoginPtyHandle();
    try {
      await handle.start();
      // Two live routes share this worker. A worker session id alone cannot
      // prove which route a hostRouteId-less message belongs to once a
      // second route is live, so the fallback must refuse to guess.
      const first = await handle.openLoginPtySession(
        ptyOpenInput({ workerSessionId: "ws-A" }),
      );
      const second = await handle.openLoginPtySession(
        ptyOpenInput({
          workerSessionId: "ws-B",
          outputs: [{ chunk: "cross-route", sid: "ws-A", omitHostRouteId: true }],
        }),
      );
      const firstChunks: string[] = [];
      const secondChunks: string[] = [];
      first.onData((chunk) => firstChunks.push(chunk));
      second.onData((chunk) => secondChunks.push(chunk));
      // Give the ambiguous notification time to arrive and be dropped.
      await new Promise((resolve) => setTimeout(resolve, 60));
      expect(firstChunks).toEqual([]);
      expect(secondChunks).toEqual([]);

      await first.close();
      await second.close();
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });
});

// ---------------------------------------------------------------------------
// The process-wide login pseudo-terminal route ceiling. A host process can
// run only so many concurrent login pseudo-terminal routes before the
// underlying resources are exhausted, so the ceiling protects the host
// process itself, not one user or one worker.
// ---------------------------------------------------------------------------
// Every login pseudo-terminal route reserves one slot from the same
// process-wide aggregate route-slot controller the duplex channel route
// uses (`createDuplexRouteSlotController`), so the two route types share one
// ceiling. This is a host-process safety ceiling across every worker in the
// process, not a per-user or a per-worker quota.

describe("plugin worker manager login pseudo-terminal route ceiling", () => {
  it("rejects the second open with the fixed capacity error before the worker call, when the process-wide ceiling is full", async () => {
    // A process-scoped ceiling of one slot. The manager injects one shared
    // controller into every worker; the test injects a small one directly —
    // the same controller shape the duplex channel route shares.
    const handle = makeLoginPtyHandle({
      duplexRouteSlots: createDuplexRouteSlotController(1),
      loginPtyLimits: { openTimeoutMs: 300 },
    });
    try {
      await handle.start();
      const first = await handle.openLoginPtySession(
        ptyOpenInput({ workerSessionId: "ws-A" }),
      );
      const startedAt = Date.now();
      // The refused open scripts `no-open-reply`: if it wrongly reached the
      // worker, the promise would only settle after the 300ms open timeout,
      // and with a different, timeout-shaped error — not the capacity error.
      // A fast rejection with the exact capacity error proves the worker
      // never received this open's request.
      await expect(
        handle.openLoginPtySession(
          ptyOpenInput({ workerSessionId: "ws-B", mode: "no-open-reply" }),
        ),
      ).rejects.toThrow("LOGIN_PTY_ROUTES_AT_CAPACITY");
      expect(Date.now() - startedAt).toBeLessThan(150);
      await first.close();
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("admits a later open after the first route closes and releases its slot", async () => {
    const handle = makeLoginPtyHandle({
      duplexRouteSlots: createDuplexRouteSlotController(1),
    });
    try {
      await handle.start();
      const first = await handle.openLoginPtySession(
        ptyOpenInput({ workerSessionId: "ws-A" }),
      );
      await expect(
        handle.openLoginPtySession(ptyOpenInput({ workerSessionId: "ws-B" })),
      ).rejects.toThrow("LOGIN_PTY_ROUTES_AT_CAPACITY");
      // Closing the first route releases its slot, so a later open is admitted.
      await first.close();
      const second = await handle.openLoginPtySession(
        ptyOpenInput({ workerSessionId: "ws-C" }),
      );
      await second.close();
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("admits a later open on a different worker after a worker exit releases the shared slot", async () => {
    // One shared controller instance, the same shape the manager injects into
    // every worker handle, so both handles below draw from the SAME ceiling.
    const sharedSlots = createDuplexRouteSlotController(1);
    const handle = makeLoginPtyHandle({ duplexRouteSlots: sharedSlots });
    const secondHandle = makeLoginPtyHandle({ duplexRouteSlots: sharedSlots });
    try {
      await handle.start();
      const first = await handle.openLoginPtySession(
        ptyOpenInput({ workerSessionId: "ws-A" }),
      );
      const waitResult = first.wait();
      await handle.stop();
      // The worker exit settles the route and releases its slot.
      await expect(waitResult).resolves.toEqual({ exitCode: null });
      // Before the release, a second worker's open against the same shared
      // ceiling would have rejected with the capacity error. After the
      // release, the shared ceiling of one admits a fresh open on a
      // different worker.
      await secondHandle.start();
      const second = await secondHandle.openLoginPtySession(
        ptyOpenInput({ workerSessionId: "ws-B" }),
      );
      await second.close();
    } finally {
      await handle.stop().catch(() => undefined);
      await secondHandle.stop().catch(() => undefined);
    }
  });

  it("releases exactly one slot when a route's terminal exit is followed by an explicit close", async () => {
    // A double release (once on the terminal exit, once on the later close)
    // would let a third open through a ceiling of one before its true
    // capacity. This test proves the ceiling still holds after both events.
    const handle = makeLoginPtyHandle({
      duplexRouteSlots: createDuplexRouteSlotController(1),
    });
    try {
      await handle.start();
      const first = await handle.openLoginPtySession(
        ptyOpenInput({ workerSessionId: "ws-A", exitCode: 0 }),
      );
      await expect(first.wait()).resolves.toEqual({ exitCode: 0 });
      // The terminal exit already released the one slot. A second open now
      // succeeds, consuming that same slot.
      const second = await handle.openLoginPtySession(
        ptyOpenInput({ workerSessionId: "ws-B" }),
      );
      // The explicit close on the first (already-exited) route must not
      // release a second slot it no longer holds.
      await first.close();
      await expect(
        handle.openLoginPtySession(ptyOpenInput({ workerSessionId: "ws-C" })),
      ).rejects.toThrow("LOGIN_PTY_ROUTES_AT_CAPACITY");
      await second.close();
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });
});

// ---------------------------------------------------------------------------
// Login pseudo-terminal pre-bind queue
// ---------------------------------------------------------------------------
// The host reads the worker pipe and `readline` dispatches every line of one
// chunk synchronously. The route only becomes `open` inside the `await`
// continuation of the `loginPtyOpen` reply, which runs as a microtask after
// the whole synchronous line loop. So a worker that batches an output or an
// exit notification with the open reply floods the host before the bind. The
// tests below prove the host queues these pre-bind records and replays them
// through the live router right after the bind, instead of dropping them.
// The host holds every pre-bind record — output and exit alike — in one
// arrival-ordered queue, and it replays each record through the live router
// in that exact order. A replayed exit that carries the bound worker session
// identifier settles the route, so a record that arrived behind it — a real
// worker process cannot emit output after it exits, so this only matters for
// a forged or a queued record — replays into a route that already settled
// and is dropped.

describe("plugin worker manager login pseudo-terminal pre-bind queue", () => {
  it("queues and replays a coalesced output notification that arrives before the bind", async () => {
    const handle = makeLoginPtyHandle();
    try {
      await handle.start();
      // The fixture writes the open reply and the output notification in one
      // stdout write, so the host reads both before the route binds.
      const session = await handle.openLoginPtySession(
        ptyOpenInput({
          batchWithOpenReply: true,
          workerSessionId: "ws-A",
          outputs: [{ chunk: "batched-output" }],
        }),
      );
      const chunks: string[] = [];
      session.onData((chunk) => chunks.push(chunk));
      // The bind already replayed the queued record into `buffered`, so
      // `onData` drains it synchronously with no wait.
      expect(chunks).toEqual(["batched-output"]);
      await session.close();
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("delivers a coalesced output before the coalesced exit settles the wait", async () => {
    const handle = makeLoginPtyHandle();
    try {
      await handle.start();
      const session = await handle.openLoginPtySession(
        ptyOpenInput({
          batchWithOpenReply: true,
          workerSessionId: "ws-A",
          outputs: [{ chunk: "batched-output" }],
          exitCode: 0,
        }),
      );
      const chunks: string[] = [];
      session.onData((chunk) => chunks.push(chunk));
      // Both the output and the exit arrived before the bind and queued in
      // order. The replay preserves that order, so the output reaches the
      // listener before the wait settles.
      await expect(session.wait()).resolves.toEqual({ exitCode: 0 });
      expect(chunks).toEqual(["batched-output"]);
      await session.close();
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("settles the wait with a valid pre-bind exit that a later mismatched exit cannot displace", async () => {
    const handle = makeLoginPtyHandle();
    try {
      await handle.start();
      // The worker batches a valid exit for the real worker session id, then a
      // second exit for a forged worker session id, both before the open
      // reply. The bind still verifies the real session id, so the held valid
      // exit settles the wait, and the mismatched exit that arrived after it
      // never displaces it.
      const session = await handle.openLoginPtySession(
        ptyOpenInput({
          batchWithOpenReply: true,
          workerSessionId: "ws-A",
          exitCode: 0,
          extraExits: [{ exitCode: 1, sid: "ws-EVIL" }],
        }),
      );
      await expect(session.wait()).resolves.toEqual({ exitCode: 0 });
      await session.close();
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("delivers a pre-bind output, then the exit, and drops output that arrives behind the exit", async () => {
    const handle = makeLoginPtyHandle();
    try {
      await handle.start();
      // The worker batches an output, then a valid exit, then a further
      // output, all before the open reply. The host replays the three held
      // records in this exact arrival order. The exit settles the route
      // right after the first output, so the record behind the exit finds a
      // route that already settled and never reaches the listener.
      const session = await handle.openLoginPtySession(
        ptyOpenInput({
          batchWithOpenReply: true,
          workerSessionId: "ws-A",
          outputs: [{ chunk: "before-exit" }],
          exitCode: 0,
          outputsAfterExit: [{ chunk: "after-exit" }],
        }),
      );
      const chunks: string[] = [];
      session.onData((chunk) => chunks.push(chunk));
      await expect(session.wait()).resolves.toEqual({ exitCode: 0 });
      expect(chunks).toEqual(["before-exit"]);
      await session.close();
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("drops output that arrives behind a valid pre-bind exit", async () => {
    const handle = makeLoginPtyHandle();
    try {
      await handle.start();
      const session = await handle.openLoginPtySession(
        ptyOpenInput({
          batchWithOpenReply: true,
          workerSessionId: "ws-A",
          exitCode: 0,
          // The worker batched this output behind the exit. The replay sends
          // the exit first, in arrival order, which settles the route. The
          // output record behind it then finds a route that is no longer
          // `open`, the same drop the live path applies to output a real
          // worker process could never emit after its own exit.
          outputsAfterExit: [{ chunk: "late-output" }],
        }),
      );
      const chunks: string[] = [];
      session.onData((chunk) => chunks.push(chunk));
      await expect(session.wait()).resolves.toEqual({ exitCode: 0 });
      expect(chunks).toEqual([]);
      await session.close();
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("settles the wait with the valid exit code and drops output behind it, even past the total-chars bound", async () => {
    const handle = makeLoginPtyHandle({
      loginPtyLimits: { maxTotalChars: 10, maxPreBindFrames: 1000, maxPreBindChars: 1000 },
    });
    try {
      await handle.start();
      // The worker batches a valid exit with the open reply, then an output
      // record that would push the cumulative delivered total past the
      // 10-character bound. The replay sends the exit first, in arrival
      // order. The exit settles the route, so the replay drops the output
      // record behind it before the total-chars check ever runs — the
      // bound violation the check exists to catch never reaches it, because
      // a real worker process could never emit that output in the first
      // place.
      const session = await handle.openLoginPtySession(
        ptyOpenInput({
          batchWithOpenReply: true,
          workerSessionId: "ws-A",
          exitCode: 0,
          outputsAfterExit: [{ chunk: "aaaaaaaaaaaa" }],
        }),
      );
      const chunks: string[] = [];
      session.onData((chunk) => chunks.push(chunk));
      await expect(session.wait()).resolves.toEqual({ exitCode: 0 });
      expect(chunks).toEqual([]);
      await session.close();
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("delivers output that arrived behind a mismatched pre-bind exit and settles with the later valid exit", async () => {
    const handle = makeLoginPtyHandle();
    try {
      await handle.start();
      // The worker batches a mismatched exit, then a genuine output, then
      // the valid exit, all before the open reply. The mismatched exit
      // arrives first, but the exact-match gate fails it, so it changes no
      // state and the replay continues. The output that follows it still
      // reaches the listener, and the valid exit that follows the output
      // settles the wait.
      const session = await handle.openLoginPtySession(
        ptyOpenInput({
          batchWithOpenReply: true,
          workerSessionId: "ws-A",
          sequence: [
            { type: "exit", exitCode: 1, sid: "ws-EVIL" },
            { type: "output", chunk: "genuine-output" },
            { type: "exit", exitCode: 0 },
          ],
        }),
      );
      const chunks: string[] = [];
      session.onData((chunk) => chunks.push(chunk));
      await expect(session.wait()).resolves.toEqual({ exitCode: 0 });
      expect(chunks).toEqual(["genuine-output"]);
      await session.close();
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("drops a forged pre-bind worker session id sent before the valid bind", async () => {
    const handle = makeLoginPtyHandle();
    try {
      await handle.start();
      const session = await handle.openLoginPtySession(
        ptyOpenInput({
          batchWithOpenReply: true,
          workerSessionId: "ws-A",
          outputs: [
            { chunk: "forged", sid: "ws-EVIL" },
            { chunk: "good" },
          ],
        }),
      );
      const chunks: string[] = [];
      session.onData((chunk) => chunks.push(chunk));
      // Both records queued before the bind, since the host cannot yet check
      // a worker session id against a route that has not bound one. The
      // replay applies the exact-match gate against the real bind ("ws-A"),
      // so the forged record never reaches the listener.
      expect(chunks).toEqual(["good"]);
      await session.close();
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("terminalizes the route when batched pre-bind records pass the frame-count bound", async () => {
    const handle = makeLoginPtyHandle({
      loginPtyLimits: { maxPreBindFrames: 2 },
    });
    try {
      await handle.start();
      // The worker batches three output notifications with the open reply, so
      // all three arrive, and queue, before the bind. The third record passes
      // the frame-count bound, so the host terminalizes the route before the
      // bind can complete, and the open call itself fails.
      await expect(
        handle.openLoginPtySession(
          ptyOpenInput({
            batchWithOpenReply: true,
            outputs: [{ chunk: "a" }, { chunk: "b" }, { chunk: "c" }],
          }),
        ),
      ).rejects.toThrow("LOGIN_PTY_OPEN_FAILED");
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("terminalizes the route when batched pre-bind output passes the character bound", async () => {
    const handle = makeLoginPtyHandle({
      loginPtyLimits: { maxPreBindChars: 10 },
    });
    try {
      await handle.start();
      await expect(
        handle.openLoginPtySession(
          ptyOpenInput({
            batchWithOpenReply: true,
            // 5 + 5 = 10 admits; the third record brings the queued total to
            // 15, past the 10-character bound, so the host terminalizes the
            // route before the bind can complete.
            outputs: [{ chunk: "aaaaa" }, { chunk: "bbbbb" }, { chunk: "ccccc" }],
          }),
        ),
      ).rejects.toThrow("LOGIN_PTY_OPEN_FAILED");
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("charges the retained worker session id characters on the pre-bind output path", async () => {
    const handle = makeLoginPtyHandle({
      loginPtyLimits: { maxPreBindChars: 10 },
    });
    try {
      await handle.start();
      // A 6-character worker session id and one 5-character chunk charge 11
      // characters against the 10-character bound on the very first record,
      // even though the chunk alone is under the bound. Without the identifier
      // charge, this single record would pass.
      await expect(
        handle.openLoginPtySession(
          ptyOpenInput({
            batchWithOpenReply: true,
            workerSessionId: "ABCDEF",
            outputs: [{ chunk: "aaaaa" }],
          }),
        ),
      ).rejects.toThrow("LOGIN_PTY_OPEN_FAILED");
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("terminalizes the route when batched pre-bind exit notifications with a large worker session id pass the character bound", async () => {
    const handle = makeLoginPtyHandle({
      loginPtyLimits: { maxPreBindChars: 10 },
    });
    try {
      await handle.start();
      await expect(
        handle.openLoginPtySession(
          ptyOpenInput({
            batchWithOpenReply: true,
            // An exit record carries no chunk, but it still retains the worker
            // session id. This 5-character id makes 5 + 5 = 10 admit the first
            // two exits; the third brings the queued total to 15, past the
            // 10-character bound, so the host terminalizes the route before
            // the bind can complete.
            workerSessionId: "AAAAA",
            sequence: [
              { type: "exit", exitCode: 1 },
              { type: "exit", exitCode: 2 },
              { type: "exit", exitCode: 3 },
            ],
          }),
        ),
      ).rejects.toThrow("LOGIN_PTY_OPEN_FAILED");
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("settles with the first exit code against a repeated pre-bind exit for the same session, behind a filled output queue", async () => {
    const handle = makeLoginPtyHandle({
      loginPtyLimits: { maxPreBindFrames: 50 },
    });
    try {
      await handle.start();
      // Fill the pre-bind queue with 40 output records, then repeat the exit
      // for the same worker session id after more output arrives. The first
      // exit settles the route during the replay, so the repeat exit and the
      // output around it never reach the listener.
      const fillerOutputs = Array.from({ length: 40 }, (_, index) => ({
        type: "output" as const,
        chunk: `filler-${index}`,
      }));
      const session = await handle.openLoginPtySession(
        ptyOpenInput({
          batchWithOpenReply: true,
          workerSessionId: "ws-A",
          sequence: [
            ...fillerOutputs,
            { type: "exit", exitCode: 1 },
            { type: "output", chunk: "between-exits" },
            { type: "exit", exitCode: 2 },
            { type: "output", chunk: "after-repeat" },
          ],
        }),
      );
      const chunks: string[] = [];
      session.onData((chunk) => chunks.push(chunk));
      // The wait settles with the FIRST exit code, and the exit drops every
      // output that arrived behind it, so neither "between-exits" nor
      // "after-repeat" reaches the listener.
      await expect(session.wait()).resolves.toEqual({ exitCode: 1 });
      expect(chunks).toEqual(fillerOutputs.map((entry) => entry.chunk));
      await session.close();
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("settles with the first exit code against N repeated pre-bind exits for the same session", async () => {
    const handle = makeLoginPtyHandle();
    try {
      await handle.start();
      // The worker sends five repeat exits for the same session before the
      // bind. The first exit settles the route during the replay, so every
      // repeat drops there and the wait still settles with the first code.
      const session = await handle.openLoginPtySession(
        ptyOpenInput({
          batchWithOpenReply: true,
          workerSessionId: "ws-A",
          exitCode: 1,
          extraExits: [
            { exitCode: 2 },
            { exitCode: 3 },
            { exitCode: 4 },
            { exitCode: 5 },
          ],
        }),
      );
      await expect(session.wait()).resolves.toEqual({ exitCode: 1 });
      await session.close();
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("clears the pre-bind queue on a malformed open reply", async () => {
    const handle = makeLoginPtyHandle();
    try {
      await handle.start();
      // The malformed reply carries no worker session id, so the host cannot
      // bind. It terminalizes the route and clears the queued output before
      // it ever reaches a listener.
      await expect(
        handle.openLoginPtySession(
          ptyOpenInput({
            mode: "malformed-open",
            batchWithOpenReply: true,
            outputs: [{ chunk: "leaked" }],
          }),
        ),
      ).rejects.toThrow("LOGIN_PTY_OPEN_FAILED");
      // A later open on the same worker starts a fresh route and receives
      // only its own scripted output, never the cleared queue.
      const session = await handle.openLoginPtySession(
        ptyOpenInput({ mode: "normal", outputs: [{ chunk: "fresh" }] }),
      );
      const chunks: string[] = [];
      session.onData((chunk) => chunks.push(chunk));
      await vi.waitFor(() => expect(chunks).toContain("fresh"));
      expect(chunks).not.toContain("leaked");
      await session.close();
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("clears the pre-bind queue when the worker exits during the open window", async () => {
    const handle = makeLoginPtyHandle({ autoRestart: false });
    try {
      await handle.start();
      // The fixture emits one output notification, then exits before it ever
      // sends the open reply. The route never binds. The worker-exit path
      // must clear the queued output along with the route.
      await expect(
        handle.openLoginPtySession(
          ptyOpenInput({
            mode: "exit-before-open-reply",
            outputs: [{ chunk: "queued-before-exit" }],
          }),
        ),
      ).rejects.toThrow();
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("terminalizes at replay when the queued output would pass the cumulative total-chars bound", async () => {
    const handle = makeLoginPtyHandle({
      loginPtyLimits: { maxTotalChars: 10, maxPreBindFrames: 1000, maxPreBindChars: 1000 },
    });
    try {
      await handle.start();
      // The generous pre-bind bounds admit all three records at intake, so
      // the bind completes and the replay runs. The replay sends each record
      // through the same live router an open route uses, so the cumulative
      // `maxTotalChars` gate still applies: the third record would bring the
      // delivered total to 15, past the 10-character bound, so the replay
      // terminalizes the route partway through. The directive carries no exit
      // notification, so only a mid-replay terminalize can settle the wait;
      // without the cumulative gate applying during replay, this call would
      // hang.
      const session = await handle.openLoginPtySession(
        ptyOpenInput({
          batchWithOpenReply: true,
          outputs: [{ chunk: "aaaaa" }, { chunk: "bbbbb" }, { chunk: "ccccc" }],
        }),
      );
      const chunks: string[] = [];
      session.onData((chunk) => chunks.push(chunk));
      await expect(session.wait()).resolves.toEqual({ exitCode: null });
      // The terminalize clears `route.buffered` by design (a terminalized
      // login route settles with a null exit code, so buffered data has no
      // consumer), so even the two records the replay delivered before the
      // bound tripped never reach the listener.
      expect(chunks).toEqual([]);
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });

  it("never logs the raw chunk content, including on the pre-bind overflow path", async () => {
    const handle = makeLoginPtyHandle({
      loginPtyLimits: { maxPreBindFrames: 1 },
    });
    const secretMarker = "super-secret-login-code-must-never-reach-a-log-line";
    vi.mocked(logger.warn).mockClear();
    vi.mocked(logger.error).mockClear();
    vi.mocked(logger.info).mockClear();
    vi.mocked(logger.debug).mockClear();
    try {
      await handle.start();
      // The first record admits, then the second passes the frame-count
      // bound and terminalizes the route. The overflow path logs a fixed
      // warning that must never carry the chunk text.
      await expect(
        handle.openLoginPtySession(
          ptyOpenInput({
            batchWithOpenReply: true,
            outputs: [{ chunk: secretMarker }, { chunk: "overflow" }],
          }),
        ),
      ).rejects.toThrow("LOGIN_PTY_OPEN_FAILED");
      const loggedText = [
        ...vi.mocked(logger.warn).mock.calls,
        ...vi.mocked(logger.error).mock.calls,
        ...vi.mocked(logger.info).mock.calls,
        ...vi.mocked(logger.debug).mock.calls,
      ]
        .flat()
        .map((arg) => JSON.stringify(arg))
        .join("\n");
      expect(loggedText).not.toContain(secretMarker);
    } finally {
      await handle.stop().catch(() => undefined);
    }
  });
});