diff --git a/tools/ai-cli-dispatch/src/execute.ts b/tools/ai-cli-dispatch/src/execute.ts
index f79be5b..f66e057 100644
--- a/tools/ai-cli-dispatch/src/execute.ts
+++ b/tools/ai-cli-dispatch/src/execute.ts
@@ -3,7 +3,7 @@ import { existsSync as defaultExistsSync } from "node:fs";
 import type { ClientName, ExecResult, DebugInfo, ExecuteOptions } from "./types.js";
 import { ClientNotFoundError, ExecError } from "./types.js";
 
-const CLIENT_ARGS: Record<ClientName, (prompt: string) => string[]> = {
+export const CLIENT_ARGS: Record<ClientName, (prompt: string) => string[]> = {
   codex: (p) => ["exec", "--yolo", p],
   claude: (p) => ["-p", p, "--dangerously-skip-permissions"],
   opencode: (p) => ["run", "--dangerously-skip-permissions", p],
diff --git a/tools/ai-cli-dispatch/src/jobs.ts b/tools/ai-cli-dispatch/src/jobs.ts
new file mode 100644
index 0000000..e6c8792
--- /dev/null
+++ b/tools/ai-cli-dispatch/src/jobs.ts
@@ -0,0 +1,360 @@
+import { spawn as defaultSpawn } from "node:child_process";
+import { existsSync as defaultExistsSync, mkdirSync as defaultMkdirSync, readFileSync as defaultReadFileSync, readdirSync as defaultReaddirSync, statSync as defaultStatSync, unlinkSync as defaultUnlinkSync, writeFileSync as defaultWriteFileSync } from "node:fs";
+import { randomUUID } from "node:crypto";
+import { CLIENT_ARGS } from "./execute.js";
+import type { ClientName, Job, JobRecord, JobStartOptions, ExecResult, JobStatus } from "./types.js";
+import { JobNotFoundError, JobResultUnavailableError } from "./types.js";
+
+export interface JobOperationsOptions {
+  jobDir?: string;
+  fs?: {
+    mkdirSync: typeof defaultMkdirSync;
+    writeFileSync: typeof defaultWriteFileSync;
+    readFileSync: typeof defaultReadFileSync;
+    readdirSync: typeof defaultReaddirSync;
+    existsSync: typeof defaultExistsSync;
+    statSync: typeof defaultStatSync;
+    unlinkSync: typeof defaultUnlinkSync;
+  };
+}
+
+export interface StartJobOptions extends JobStartOptions, JobOperationsOptions {}
+
+const runningChildren = new Map<string, { child: any; timeout?: ReturnType<typeof setTimeout>; cancelled?: boolean }>();
+
+const DEFAULT_JOB_DIR = `${process.env.HOME || process.env.USERPROFILE}/.openclaw/ai-cli-dispatch/jobs`;
+
+function getJobDir(options?: { jobDir?: string }): string {
+  return options?.jobDir ?? DEFAULT_JOB_DIR;
+}
+
+function writeJobFile(
+  jobDir: string,
+  record: JobRecord,
+  fs: NonNullable<JobOperationsOptions["fs"]>
+): void {
+  fs.mkdirSync(jobDir, { recursive: true });
+  fs.writeFileSync(`${jobDir}/${record.id}.json`, JSON.stringify(record, null, 2));
+}
+
+function readJobFile(
+  jobId: string,
+  jobDir: string,
+  fs: NonNullable<JobOperationsOptions["fs"]>
+): JobRecord {
+  const path = `${jobDir}/${jobId}.json`;
+  try {
+    return JSON.parse(fs.readFileSync(path, "utf-8")) as JobRecord;
+  } catch (err: any) {
+    if (err.code === "ENOENT") {
+      throw new JobNotFoundError(jobId);
+    }
+    throw err;
+  }
+}
+
+export async function startJob(
+  client: ClientName,
+  prompt: string,
+  options: StartJobOptions = {}
+): Promise<Job> {
+  const jobId = randomUUID();
+  const jobDir = getJobDir(options);
+  const fs = options.fs ?? {
+    mkdirSync: defaultMkdirSync,
+    writeFileSync: defaultWriteFileSync,
+    readFileSync: defaultReadFileSync,
+    readdirSync: defaultReaddirSync,
+    existsSync: defaultExistsSync,
+    statSync: defaultStatSync,
+    unlinkSync: defaultUnlinkSync,
+  };
+  const spawnImpl = options.spawn ?? defaultSpawn;
+  const timeoutMs = options.timeoutMs ?? 600_000;
+
+  const argBuilder = (CLIENT_ARGS as Record<string, (prompt: string) => string[]>)[client];
+  if (!argBuilder) {
+    const startedAt = new Date().toISOString();
+    const errRecord: JobRecord = {
+      id: jobId,
+      client,
+      prompt,
+      status: "failed",
+      startedAt,
+      completedAt: startedAt,
+      stdout: "",
+      stderr: "",
+      error: `Unknown client: ${client}`,
+    };
+    writeJobFile(jobDir, errRecord, fs);
+    return { id: jobId, client, prompt, status: "failed", startedAt, error: errRecord.error };
+  }
+
+  const args = argBuilder(prompt);
+  const command = options.clientPath ?? client;
+  const startedAt = new Date().toISOString();
+
+  const record: JobRecord = {
+    id: jobId,
+    client,
+    prompt,
+    status: "running",
+    startedAt,
+    pid: undefined,
+    stdout: "",
+    stderr: "",
+  };
+
+  writeJobFile(jobDir, record, fs);
+
+  return new Promise((resolve) => {
+    let stdout = "";
+    let stderr = "";
+    let settled = false;
+    let timedOut = false;
+
+    const child = spawnImpl(command, args, {
+      detached: true,
+      shell: false,
+      stdio: ["ignore", "pipe", "pipe"],
+    });
+
+    record.pid = child.pid ?? undefined;
+    writeJobFile(jobDir, record, fs);
+
+    child.stdout?.on("data", (chunk: Buffer | string) => {
+      stdout += chunk.toString();
+    });
+
+    child.stderr?.on("data", (chunk: Buffer | string) => {
+      stderr += chunk.toString();
+    });
+
+    const timeout = setTimeout(() => {
+      timedOut = true;
+      try {
+        child.kill("SIGTERM");
+      } catch {
+        // ignore
+      }
+    }, timeoutMs);
+
+    runningChildren.set(jobId, { child, timeout });
+
+    function finalize(status: JobStatus, result?: ExecResult, error?: string) {
+      if (settled) return;
+      settled = true;
+      clearTimeout(timeout);
+      runningChildren.delete(jobId);
+      const completedAt = new Date().toISOString();
+      const finalRecord: JobRecord = {
+        ...record,
+        status,
+        stdout,
+        stderr,
+        result,
+        error,
+        completedAt,
+      };
+      writeJobFile(jobDir, finalRecord, fs);
+    }
+
+    child.on("error", (err: NodeJS.ErrnoException) => {
+      finalize("failed", undefined, err.message);
+    });
+
+    child.on("close", (code: number | null, signal: NodeJS.Signals | null) => {
+      const entry = runningChildren.get(jobId);
+      if (!entry && settled) return;
+
+      if (entry?.cancelled) {
+        finalize("cancelled");
+        return;
+      }
+
+      if (timedOut) {
+        const durationMs = Date.now() - new Date(record.startedAt).getTime();
+        finalize("timed_out", {
+          stdout,
+          stderr,
+          exitCode: -1,
+          client,
+          durationMs,
+        });
+      } else if (code !== null && code !== 0) {
+        const durationMs = Date.now() - new Date(record.startedAt).getTime();
+        finalize("failed", {
+          stdout,
+          stderr,
+          exitCode: code,
+          client,
+          durationMs,
+        });
+      } else {
+        const durationMs = Date.now() - new Date(record.startedAt).getTime();
+        finalize("completed", {
+          stdout,
+          stderr,
+          exitCode: code ?? 0,
+          client,
+          durationMs,
+        });
+      }
+    });
+
+    child.unref?.();
+
+    resolve({
+      id: jobId,
+      client,
+      prompt,
+      status: "running",
+      startedAt,
+      pid: record.pid,
+    });
+  });
+}
+
+export function getJob(jobId: string, options: JobOperationsOptions = {}): Job {
+  const jobDir = getJobDir(options);
+  const fs = options.fs ?? {
+    mkdirSync: defaultMkdirSync,
+    writeFileSync: defaultWriteFileSync,
+    readFileSync: defaultReadFileSync,
+    readdirSync: defaultReaddirSync,
+    existsSync: defaultExistsSync,
+    statSync: defaultStatSync,
+    unlinkSync: defaultUnlinkSync,
+  };
+  const record = readJobFile(jobId, jobDir, fs);
+  const { stdout: _stdout, stderr: _stderr, ...job } = record;
+  return job;
+}
+
+export function getJobResult(jobId: string, options: JobOperationsOptions = {}): ExecResult {
+  const job = getJob(jobId, options);
+  if (job.status !== "completed") {
+    throw new JobResultUnavailableError(jobId, job.status);
+  }
+  return job.result!;
+}
+
+export function cancelJob(jobId: string, options: JobOperationsOptions = {}): void {
+  const jobDir = getJobDir(options);
+  const fs = options.fs ?? {
+    mkdirSync: defaultMkdirSync,
+    writeFileSync: defaultWriteFileSync,
+    readFileSync: defaultReadFileSync,
+    readdirSync: defaultReaddirSync,
+    existsSync: defaultExistsSync,
+    statSync: defaultStatSync,
+    unlinkSync: defaultUnlinkSync,
+  };
+
+  const record = readJobFile(jobId, jobDir, fs);
+  if (record.status !== "running") {
+    return;
+  }
+
+  const entry = runningChildren.get(jobId);
+  if (entry) {
+    entry.cancelled = true;
+    clearTimeout(entry.timeout);
+    try {
+      entry.child.kill("SIGTERM");
+    } catch {
+      // ignore
+    }
+  } else if (record.pid) {
+    try {
+      process.kill(record.pid, "SIGTERM");
+    } catch {
+      // ignore
+    }
+    const cancelledRecord: JobRecord = {
+      ...record,
+      status: "cancelled",
+      completedAt: new Date().toISOString(),
+    };
+    writeJobFile(jobDir, cancelledRecord, fs);
+  } else {
+    const cancelledRecord: JobRecord = {
+      ...record,
+      status: "cancelled",
+      completedAt: new Date().toISOString(),
+    };
+    writeJobFile(jobDir, cancelledRecord, fs);
+  }
+}
+
+export function listJobs(options: JobOperationsOptions & { filter?: JobStatus } = {}): Job[] {
+  const jobDir = getJobDir(options);
+  const fs = options.fs ?? {
+    mkdirSync: defaultMkdirSync,
+    writeFileSync: defaultWriteFileSync,
+    readFileSync: defaultReadFileSync,
+    readdirSync: defaultReaddirSync,
+    existsSync: defaultExistsSync,
+    statSync: defaultStatSync,
+    unlinkSync: defaultUnlinkSync,
+  };
+
+  if (!fs.existsSync(jobDir)) {
+    return [];
+  }
+
+  const entries = fs.readdirSync(jobDir).filter((f) => f.endsWith(".json"));
+  const jobs: Job[] = [];
+
+  for (const entry of entries) {
+    const jobId = entry.replace(/\.json$/, "");
+    try {
+      const record = readJobFile(jobId, jobDir, fs);
+      const { stdout: _stdout, stderr: _stderr, ...job } = record;
+      jobs.push(job);
+    } catch {
+      // ignore corrupt/missing files
+    }
+  }
+
+  jobs.sort((a, b) => new Date(b.startedAt).getTime() - new Date(a.startedAt).getTime());
+
+  if (options.filter) {
+    return jobs.filter((j) => j.status === options.filter);
+  }
+
+  return jobs;
+}
+
+export function cleanupJobs(options: JobOperationsOptions & { maxAgeMs?: number } = {}): void {
+  const jobDir = getJobDir(options);
+  const fs = options.fs ?? {
+    mkdirSync: defaultMkdirSync,
+    writeFileSync: defaultWriteFileSync,
+    readFileSync: defaultReadFileSync,
+    readdirSync: defaultReaddirSync,
+    existsSync: defaultExistsSync,
+    statSync: defaultStatSync,
+    unlinkSync: defaultUnlinkSync,
+  };
+  const maxAgeMs = options.maxAgeMs ?? 24 * 60 * 60 * 1000;
+
+  if (!fs.existsSync(jobDir)) {
+    return;
+  }
+
+  const now = Date.now();
+  const entries = fs.readdirSync(jobDir).filter((f) => f.endsWith(".json"));
+
+  for (const entry of entries) {
+    const path = `${jobDir}/${entry}`;
+    try {
+      const stat = fs.statSync(path);
+      if (now - stat.mtimeMs > maxAgeMs) {
+        fs.unlinkSync(path);
+      }
+    } catch {
+      // ignore
+    }
+  }
+}
diff --git a/tools/ai-cli-dispatch/tests/jobs.test.ts b/tools/ai-cli-dispatch/tests/jobs.test.ts
new file mode 100644
index 0000000..ad7efa6
--- /dev/null
+++ b/tools/ai-cli-dispatch/tests/jobs.test.ts
@@ -0,0 +1,558 @@
+import { describe, it } from "node:test";
+import assert from "node:assert";
+import { EventEmitter } from "node:events";
+import { Readable } from "node:stream";
+import {
+  startJob,
+  getJob,
+  getJobResult,
+  cancelJob,
+  listJobs,
+  cleanupJobs,
+} from "../src/jobs.js";
+import { JobNotFoundError, JobResultUnavailableError } from "../src/types.js";
+import type { ClientName, JobRecord, JobStatus } from "../src/types.js";
+
+interface MockScenario {
+  stdout?: string;
+  stderr?: string;
+  exitCode?: number;
+  error?: NodeJS.ErrnoException;
+  hang?: boolean;
+}
+
+function createMockChildProcess(scenario: MockScenario): any {
+  const child = new EventEmitter() as any;
+  child.pid = 12345;
+  child.stdout = Readable.from(
+    scenario.stdout !== undefined ? [scenario.stdout] : []
+  );
+  child.stderr = Readable.from(
+    scenario.stderr !== undefined ? [scenario.stderr] : []
+  );
+  child.killed = false;
+  child.kill = (signal: string = "SIGTERM") => {
+    child.killed = true;
+    process.nextTick(() => {
+      child.emit("exit", null, signal);
+      child.emit("close", null, signal);
+    });
+    return true;
+  };
+  child.unref = () => {};
+
+  let stdoutEnded = scenario.stdout === undefined;
+  let stderrEnded = scenario.stderr === undefined;
+
+  child.stdout.on("end", () => {
+    stdoutEnded = true;
+    maybeClose();
+  });
+  child.stderr.on("end", () => {
+    stderrEnded = true;
+    maybeClose();
+  });
+
+  function maybeClose() {
+    if (stdoutEnded && stderrEnded && !scenario.hang && !scenario.error) {
+      child.emit("exit", scenario.exitCode ?? 0, null);
+      child.emit("close", scenario.exitCode ?? 0, null);
+    }
+  }
+
+  process.nextTick(() => {
+    if (scenario.error) {
+      child.emit("error", scenario.error);
+    }
+  });
+
+  return child;
+}
+
+function createMockFs() {
+  const files = new Map<string, string>();
+  const dirs = new Set<string>();
+
+  const fs = {
+    mkdirSync: (p: string, _opts?: any) => {
+      dirs.add(p);
+    },
+    writeFileSync: (p: string, data: string) => {
+      files.set(p, data);
+    },
+    readFileSync: (p: string, _opts?: any): string => {
+      if (!files.has(p)) {
+        const err = Object.assign(new Error(`ENOENT: ${p}`), { code: "ENOENT" });
+        throw err;
+      }
+      return files.get(p)!;
+    },
+    readdirSync: (p: string): string[] => {
+      const result: string[] = [];
+      for (const f of files.keys()) {
+        const dir = f.substring(0, f.lastIndexOf("/"));
+        if (dir === p) {
+          result.push(f.substring(f.lastIndexOf("/") + 1));
+        }
+      }
+      return result;
+    },
+    existsSync: (p: string): boolean => {
+      return files.has(p) || dirs.has(p);
+    },
+    statSync: (p: string): { mtimeMs: number; isFile: () => boolean } => {
+      if (!files.has(p)) {
+        const err = Object.assign(new Error(`ENOENT: ${p}`), { code: "ENOENT" });
+        throw err;
+      }
+      const data = files.get(p)!;
+      // Use startedAt from JSON for deterministic age tests
+      try {
+        const record = JSON.parse(data) as JobRecord;
+        return { mtimeMs: new Date(record.startedAt).getTime(), isFile: () => true };
+      } catch {
+        return { mtimeMs: Date.now(), isFile: () => true };
+      }
+    },
+    unlinkSync: (p: string) => {
+      files.delete(p);
+    },
+    __files: files,
+    __dirs: dirs,
+  };
+
+  return fs;
+}
+
+function mockSpawn(scenarios: Map<string, MockScenario>): any {
+  return (cmd: string, args: string[], _opts: any): any => {
+    const key = [cmd, ...args].join(" ");
+    const scenario = scenarios.get(key);
+    if (!scenario) {
+      return createMockChildProcess({
+        error: Object.assign(new Error("spawn ENOENT"), { code: "ENOENT" }),
+      });
+    }
+    return createMockChildProcess(scenario);
+  };
+}
+
+function readJobRecord(fs: ReturnType<typeof createMockFs>, path: string): JobRecord {
+  return JSON.parse(fs.readFileSync(path)) as JobRecord;
+}
+
+function delay(ms: number): Promise<void> {
+  return new Promise((r) => setTimeout(r, ms));
+}
+
+describe("startJob", () => {
+  it("spawns a detached child process and returns a running Job", async () => {
+    const scenarios = new Map<string, MockScenario>([
+      ["codex exec --yolo hello world", { stdout: "ok\n", exitCode: 0 }],
+    ]);
+    const fs = createMockFs();
+    const jobDir = "/tmp/jobs";
+
+    const job = await startJob("codex", "hello world", {
+      jobDir,
+      spawn: mockSpawn(scenarios),
+      fs,
+    });
+
+    assert.strictEqual(job.client, "codex");
+    assert.strictEqual(job.prompt, "hello world");
+    assert.strictEqual(job.status, "running");
+    assert.strictEqual(typeof job.id, "string");
+    assert.ok(job.id.length > 0);
+    assert.strictEqual(typeof job.pid, "number");
+    assert.ok(typeof job.startedAt === "string");
+
+    // Wait for child to finish
+    await delay(50);
+
+    const record = readJobRecord(fs, `${jobDir}/${job.id}.json`);
+    assert.strictEqual(record.status, "completed");
+    assert.strictEqual(record.stdout, "ok\n");
+    assert.strictEqual(record.result?.exitCode, 0);
+    assert.ok(typeof record.completedAt === "string");
+  });
+
+  it("generates unique ids for concurrent jobs", async () => {
+    const scenarios = new Map<string, MockScenario>([
+      ["codex exec --yolo a", { stdout: "a", exitCode: 0 }],
+      ["codex exec --yolo b", { stdout: "b", exitCode: 0 }],
+    ]);
+    const fs = createMockFs();
+    const jobDir = "/tmp/jobs";
+
+    const job1 = await startJob("codex", "a", {
+      jobDir,
+      spawn: mockSpawn(scenarios),
+      fs,
+    });
+    const job2 = await startJob("codex", "b", {
+      jobDir,
+      spawn: mockSpawn(scenarios),
+      fs,
+    });
+
+    assert.notStrictEqual(job1.id, job2.id);
+  });
+
+  it("sets status to timed_out when timeout is exceeded", async () => {
+    const scenarios = new Map<string, MockScenario>([
+      ["codex exec --yolo slow", { hang: true }],
+    ]);
+    const fs = createMockFs();
+    const jobDir = "/tmp/jobs";
+
+    const job = await startJob("codex", "slow", {
+      jobDir,
+      spawn: mockSpawn(scenarios),
+      fs,
+      timeoutMs: 20,
+    });
+
+    // Wait for timeout + processing
+    await delay(100);
+
+    const record = readJobRecord(fs, `${jobDir}/${job.id}.json`);
+    assert.strictEqual(record.status, "timed_out");
+  });
+
+  it("sets status to failed on non-zero exit code", async () => {
+    const scenarios = new Map<string, MockScenario>([
+      ["codex exec --yolo fail", { stdout: "", stderr: "err", exitCode: 1 }],
+    ]);
+    const fs = createMockFs();
+    const jobDir = "/tmp/jobs";
+
+    const job = await startJob("codex", "fail", {
+      jobDir,
+      spawn: mockSpawn(scenarios),
+      fs,
+    });
+
+    await delay(50);
+
+    const record = readJobRecord(fs, `${jobDir}/${job.id}.json`);
+    assert.strictEqual(record.status, "failed");
+    assert.strictEqual(record.result?.exitCode, 1);
+    assert.strictEqual(record.stderr, "err");
+  });
+
+  it("sets status to failed on spawn ENOENT", async () => {
+    const scenarios = new Map<string, MockScenario>();
+    const fs = createMockFs();
+    const jobDir = "/tmp/jobs";
+
+    const job = await startJob("codex", "hello", {
+      jobDir,
+      spawn: mockSpawn(scenarios),
+      fs,
+    });
+
+    await delay(50);
+
+    const record = readJobRecord(fs, `${jobDir}/${job.id}.json`);
+    assert.strictEqual(record.status, "failed");
+    assert.ok(record.error);
+  });
+});
+
+describe("getJob", () => {
+  it("returns the current Job state from disk", async () => {
+    const scenarios = new Map<string, MockScenario>([
+      ["codex exec --yolo hello", { stdout: "ok", exitCode: 0 }],
+    ]);
+    const fs = createMockFs();
+    const jobDir = "/tmp/jobs";
+
+    const job = await startJob("codex", "hello", {
+      jobDir,
+      spawn: mockSpawn(scenarios),
+      fs,
+    });
+
+    const fetched = getJob(job.id, { jobDir, fs });
+    assert.strictEqual(fetched.id, job.id);
+    assert.strictEqual(fetched.status, "running");
+
+    await delay(50);
+
+    const after = getJob(job.id, { jobDir, fs });
+    assert.strictEqual(after.status, "completed");
+    assert.strictEqual(after.result?.exitCode, 0);
+  });
+
+  it("throws JobNotFoundError for nonexistent job", () => {
+    const fs = createMockFs();
+    assert.throws(
+      () => getJob("missing", { jobDir: "/tmp/jobs", fs }),
+      (err: unknown) => err instanceof JobNotFoundError
+    );
+  });
+});
+
+describe("getJobResult", () => {
+  it("returns ExecResult when job is completed", async () => {
+    const scenarios = new Map<string, MockScenario>([
+      ["codex exec --yolo hello", { stdout: "ok", exitCode: 0 }],
+    ]);
+    const fs = createMockFs();
+    const jobDir = "/tmp/jobs";
+
+    const job = await startJob("codex", "hello", {
+      jobDir,
+      spawn: mockSpawn(scenarios),
+      fs,
+    });
+
+    await delay(50);
+
+    const result = getJobResult(job.id, { jobDir, fs });
+    assert.strictEqual(result.stdout, "ok");
+    assert.strictEqual(result.exitCode, 0);
+  });
+
+  it("throws JobResultUnavailableError when job is still running", async () => {
+    const scenarios = new Map<string, MockScenario>([
+      ["codex exec --yolo hello", { hang: true }],
+    ]);
+    const fs = createMockFs();
+    const jobDir = "/tmp/jobs";
+
+    const job = await startJob("codex", "hello", {
+      jobDir,
+      spawn: mockSpawn(scenarios),
+      fs,
+      timeoutMs: 50,
+    });
+
+    assert.throws(
+      () => getJobResult(job.id, { jobDir, fs }),
+      (err: unknown) => err instanceof JobResultUnavailableError
+    );
+  });
+
+  it("throws JobResultUnavailableError when job failed", async () => {
+    const scenarios = new Map<string, MockScenario>([
+      ["codex exec --yolo fail", { stdout: "", stderr: "err", exitCode: 1 }],
+    ]);
+    const fs = createMockFs();
+    const jobDir = "/tmp/jobs";
+
+    const job = await startJob("codex", "fail", {
+      jobDir,
+      spawn: mockSpawn(scenarios),
+      fs,
+    });
+
+    await delay(50);
+
+    assert.throws(
+      () => getJobResult(job.id, { jobDir, fs }),
+      (err: unknown) => err instanceof JobResultUnavailableError
+    );
+  });
+
+  it("throws JobNotFoundError for nonexistent job", () => {
+    const fs = createMockFs();
+    assert.throws(
+      () => getJobResult("missing", { jobDir: "/tmp/jobs", fs }),
+      (err: unknown) => err instanceof JobNotFoundError
+    );
+  });
+});
+
+describe("cancelJob", () => {
+  it("sends SIGTERM and updates status to cancelled", async () => {
+    const scenarios = new Map<string, MockScenario>([
+      ["codex exec --yolo hello", { hang: true }],
+    ]);
+    const fs = createMockFs();
+    const jobDir = "/tmp/jobs";
+
+    const job = await startJob("codex", "hello", {
+      jobDir,
+      spawn: mockSpawn(scenarios),
+      fs,
+    });
+
+    cancelJob(job.id, { jobDir, fs });
+
+    await delay(50);
+
+    const record = readJobRecord(fs, `${jobDir}/${job.id}.json`);
+    assert.strictEqual(record.status, "cancelled");
+  });
+
+  it("throws JobNotFoundError for nonexistent job", () => {
+    const fs = createMockFs();
+    assert.throws(
+      () => cancelJob("missing", { jobDir: "/tmp/jobs", fs }),
+      (err: unknown) => err instanceof JobNotFoundError
+    );
+  });
+});
+
+describe("listJobs", () => {
+  it("returns all jobs sorted by startedAt desc", async () => {
+    const scenarios = new Map<string, MockScenario>([
+      ["codex exec --yolo a", { stdout: "a", exitCode: 0 }],
+      ["codex exec --yolo b", { stdout: "b", exitCode: 0 }],
+    ]);
+    const fs = createMockFs();
+    const jobDir = "/tmp/jobs";
+
+    const job1 = await startJob("codex", "a", {
+      jobDir,
+      spawn: mockSpawn(scenarios),
+      fs,
+    });
+    await delay(20);
+    const job2 = await startJob("codex", "b", {
+      jobDir,
+      spawn: mockSpawn(scenarios),
+      fs,
+    });
+
+    await delay(50);
+
+    const jobs = listJobs({ jobDir, fs });
+    assert.strictEqual(jobs.length, 2);
+    assert.strictEqual(jobs[0].id, job2.id);
+    assert.strictEqual(jobs[1].id, job1.id);
+  });
+
+  it("filters jobs by status when filter is provided", () => {
+    const fs = createMockFs();
+    const jobDir = "/tmp/jobs";
+
+    const now = new Date().toISOString();
+    const runningRecord: JobRecord = {
+      id: "job-running",
+      client: "codex",
+      prompt: "run",
+      status: "running",
+      startedAt: now,
+      stdout: "",
+      stderr: "",
+    };
+    const completedRecord: JobRecord = {
+      id: "job-completed",
+      client: "claude",
+      prompt: "done",
+      status: "completed",
+      startedAt: now,
+      completedAt: now,
+      stdout: "ok",
+      stderr: "",
+      result: {
+        stdout: "ok",
+        stderr: "",
+        exitCode: 0,
+        client: "claude",
+        durationMs: 100,
+      },
+    };
+    const failedRecord: JobRecord = {
+      id: "job-failed",
+      client: "opencode",
+      prompt: "fail",
+      status: "failed",
+      startedAt: now,
+      completedAt: now,
+      stdout: "",
+      stderr: "err",
+      result: {
+        stdout: "",
+        stderr: "err",
+        exitCode: 1,
+        client: "opencode",
+        durationMs: 100,
+      },
+    };
+
+    fs.mkdirSync(jobDir, { recursive: true });
+    fs.writeFileSync(`${jobDir}/job-running.json`, JSON.stringify(runningRecord));
+    fs.writeFileSync(`${jobDir}/job-completed.json`, JSON.stringify(completedRecord));
+    fs.writeFileSync(`${jobDir}/job-failed.json`, JSON.stringify(failedRecord));
+
+    const all = listJobs({ jobDir, fs });
+    assert.strictEqual(all.length, 3);
+
+    const running = listJobs({ jobDir, fs, filter: "running" });
+    assert.strictEqual(running.length, 1);
+    assert.strictEqual(running[0].id, "job-running");
+
+    const completed = listJobs({ jobDir, fs, filter: "completed" });
+    assert.strictEqual(completed.length, 1);
+    assert.strictEqual(completed[0].id, "job-completed");
+
+    const failed = listJobs({ jobDir, fs, filter: "failed" });
+    assert.strictEqual(failed.length, 1);
+    assert.strictEqual(failed[0].id, "job-failed");
+  });
+});
+
+describe("cleanupJobs", () => {
+  it("deletes job files older than maxAgeMs", async () => {
+    const scenarios = new Map<string, MockScenario>([
+      ["codex exec --yolo old", { stdout: "old", exitCode: 0 }],
+      ["codex exec --yolo new", { stdout: "new", exitCode: 0 }],
+    ]);
+    const fs = createMockFs();
+    const jobDir = "/tmp/jobs";
+
+    // Create an old job by manipulating startedAt after creation
+    const oldJob = await startJob("codex", "old", {
+      jobDir,
+      spawn: mockSpawn(scenarios),
+      fs,
+    });
+    await delay(50);
+
+    const newJob = await startJob("codex", "new", {
+      jobDir,
+      spawn: mockSpawn(scenarios),
+      fs,
+    });
+    await delay(50);
+
+    // Make old job appear 25h old by patching its record
+    const oldPath = `${jobDir}/${oldJob.id}.json`;
+    const oldRecord = readJobRecord(fs, oldPath);
+    oldRecord.startedAt = new Date(Date.now() - 25 * 60 * 60 * 1000).toISOString();
+    fs.writeFileSync(oldPath, JSON.stringify(oldRecord));
+
+    cleanupJobs({ jobDir, fs, maxAgeMs: 24 * 60 * 60 * 1000 });
+
+    assert.strictEqual(fs.existsSync(oldPath), false);
+    assert.strictEqual(fs.existsSync(`${jobDir}/${newJob.id}.json`), true);
+  });
+
+  it("uses default maxAge of 24 hours", async () => {
+    const scenarios = new Map<string, MockScenario>([
+      ["codex exec --yolo old", { stdout: "old", exitCode: 0 }],
+    ]);
+    const fs = createMockFs();
+    const jobDir = "/tmp/jobs";
+
+    const job = await startJob("codex", "old", {
+      jobDir,
+      spawn: mockSpawn(scenarios),
+      fs,
+    });
+    await delay(50);
+
+    const path = `${jobDir}/${job.id}.json`;
+    const record = readJobRecord(fs, path);
+    record.startedAt = new Date(Date.now() - 25 * 60 * 60 * 1000).toISOString();
+    fs.writeFileSync(path, JSON.stringify(record));
+
+    cleanupJobs({ jobDir, fs });
+
+    assert.strictEqual(fs.existsSync(path), false);
+  });
+});