diff --git a/docs/reference/cli.md b/docs/reference/cli.md
index 47aac4dd..6200a732 100644
--- a/docs/reference/cli.md
+++ b/docs/reference/cli.md
@@ -47,6 +47,7 @@ CLI 可以从 `master` 快速演进，但必须兼容 `deploy.json` 固定的 CI
 - `codex deploy <commitId>` 是旧 Code Queue 兼容部署入口，已禁用以防止维护通道直连 D601 部署 Code Queue；当前 dev 自动化只做 `ci run-dev-e2e` smoke，不提供 Code Queue CD，详细规则见 `docs/reference/codex-deploy.md`。
 - `codex submit [prompt] [--prompt-file path|--prompt-stdin] [--queue queueId] [--provider-id id] [--cwd path] [--model model] [--reasoning-effort effort] [--execution-mode mode] [--max-attempts N] [--reference-task-id id] [--dry-run]` 通过 backend-core 私有代理向稳定 `code-queue` 用户服务路径提交任务；prompt 必须且只能来自位置参数、文件或 stdin 之一，`--dry-run` 只返回结构化请求且不实际入队。长 prompt、多行 prompt、含引号/反引号/Markdown 表格/JSON/反斜杠的 prompt 必须优先用 `--prompt-stdin` 或 `--prompt-file`，不要拼进 shell 单个参数；位置参数只适合短单行 smoke prompt。stdin 推荐用 quoted heredoc：`cat <<'PROMPT' | bun scripts/cli.ts codex submit --prompt-stdin --queue <id> --dry-run`，文件路径推荐 `bun scripts/cli.ts codex submit --prompt-file /tmp/code-queue-prompt.md --queue <id> --dry-run`，确认 dry-run 后移除 `--dry-run` 提交同一 payload。dry-run 会额外输出 `routingRecommendation`，包含推荐 route、runner、model、风险信号、prompt 自包含/issue 非唯一来源/prod-secret-DB 禁止/运行态或 release 禁止/证据要求/中等复杂度候选等 guard 状态；同时输出 `policyContract`，固定暴露 GPT-5.5、DeepSeek、MiniMax 的风险分层、并发上限和外部 provider 429 退避处置。该建议只用于指挥官 preflight，不会改写 payload，不改变 runtime admission，也不假设生产 MiniMax 或 DeepSeek 可用。`--dry-run` 必须返回完整 prompt、字符数和 `truncated=false` 用于人工验收；真实提交是写入操作，默认只返回 `accepted=true`、task id、队列、写入保护摘要和后续查看命令，必须标记 `promptOmitted=true` 且不得回显 prompt 或 promptPreview。真实提交会经过本机本地串行化保护和短节流，避免同一指挥端并发 submit 把低内存主机或 `code-queue-mgr` 控制面打抖；返回值会附带 `executionMode`、`runnerPermissions` 和低噪声 `submitConcurrencyGuard`，显式说明 requested/effective mode、服务级 runner sandbox/approvalPolicy、锁与等待信息。`--execution-mode` 是 Code Queue runtime placement，不是 Codex sandbox 权限；有效模式是 `default` 和 `windows-native`，`--execution-mode full-access` 等 sandbox-like 值会保留 requested 值并显示 effective `default`，同时提示当前不支持每任务 sandbox override。真实提交的 `queue` 摘要保持低噪声：`submittedTaskIds`、`queuedTaskIds`、`activeTaskIds` 和 `databaseActiveTaskIds` 是有界预览对象，`countContext` 与 `counts` 是权威计数；`submitted.taskStates[]` 直接给出本次 task id、queue id、status 和 `state=queued|running|terminal|unknown`，其来源固定为 `response.tasks[].status`。当本次新任务仍是 queued/retry_wait，`queuedTaskIds.items` 必须包含该 id；当 counts 非零但 active/queued id 列表因为 split-brain-live、上游省略或默认有界披露而不可枚举时，预览必须设置 `idsUnavailable=true`、`itemsOmitted=true` 和 `itemsMeaning=not-enumerated-in-default-submit-output`，不得打印容易误读的 `items=[]`。`queue.activity.effectiveActiveTaskCount` 和 `queue.commanderConcurrency.activeRunnerCount` 是并发判断字段；`splitBrainLive=true` 时继续把 fresh heartbeat/database active 计入 active。需要原始 drill-down 时使用 `queue.listPreviewPolicy.rawCommand`，默认是 `bun scripts/cli.ts microservice proxy code-queue /api/tasks/overview?limit=30 --raw --full`。backend-core 默认把提交、队列 CRUD、已读状态、历史摘要和轻量 Trace 读取分流到主 server `code-queue-mgr`，由它写入主 PostgreSQL；D601 scheduler 只轮询并执行已入库任务。
 - `codex steer <taskId> [prompt|--prompt-file path|--prompt-stdin] [--steer-id id] [--dry-run] [--no-retry|--retry-attempts N] [--full|--raw]` 向运行中的 Code Queue 任务发送纠偏 prompt。CLI 会为同一 task/prompt 生成稳定 `steerId`，也允许显式传入 `--steer-id`；所有 retry 都复用同一 `steerId`，支持后端按 key 抑制重复 trace 注入。真实成功只返回低噪声写入确认，不回显 prompt 或完整任务状态；输出包含 `steer.status`、`steer.deliveryState`、`steer.steerId`、`traceConfirmation` 和 `commands.traceConfirm`。失败默认只返回 `accepted=false`、原因、scope、retryable、attempt 摘要、operator guidance 和 task/read/submit/health drill-down 命令。`upstreamBodyPreview`、request 元数据和 raw upstream failure 必须显式加 `--full` 或 `--raw` 才输出。任务已终态时返回紧凑 `task-already-terminal`、`status=not_accepted`、`deliveryState=not_accepted`、task 状态、终态状态、更新时间、`retryable=false` 和 `codex task` / `codex read` / `codex submit --reference-task-id <taskId>` 后续命令。
+- `codex resume <taskId> [prompt|--prompt-file path|--prompt-stdin] [--resume-id id] [--dry-run] [--full|--raw]` 对已终态或 awaiting-closeout 的原 Code Queue task 创建后续 turn，优先用于 PR 小修、冲突、rebase、补测和 reviewer feedback，保留原 task、attempt、branch/PR 上下文和 `codexThreadId`/OpenCode session。CLI 会为同一 task/prompt 生成稳定 `resumeId`，也允许显式传入；同一 `resumeId` 加同 prompt 返回 `duplicate_suppressed` 且不重复注入，同一 `resumeId` 加不同 prompt 返回 409 conflict。真实成功只返回 taskId、resumeId/turnId、`deliveryState`、是否复用原 `codexThreadId`、有界 trace confirmation 和 `codex task/detail/trace/output` 后续命令，不回显 prompt 或完整 task state。running/judging task 必须 fail closed 并给出 `disposition=use-steer-for-active-task` 与 `codex steer` 命令，不把 resume 伪装成新 task；不存在 task 返回结构化 not accepted。若 delivery timeout 或 trace 未确认，输出 `deliveryUnconfirmed` 和确认命令，调用方先查 `codex task <taskId> --trace` 再用同一 `resumeId` 重试。
 - `codex pr-preflight [--remote] [--push-dry-run --push-dry-run-ref refs/heads/probe/<name>] [--pr-create-dry-run --pr-create-dry-run-head <head>] [--issue N] [--full|--raw]` 通过稳定 `code-queue` proxy 请求 D601 scheduler `/api/runtime-preflight`，用于 PR 型派单 admission。默认输出是紧凑 commander 视图，显式分出 `schedulerPreflight` 与 `activeRunnerPrCapability`，并附带 `commands` 和 `disclosure`，方便先看 scheduler auth 缺口、再看当前 runner/dev container 的 `gh auth status` 与 `gh pr create --dry-run` 能力；`--full` 或 `--raw` 才展开完整 `preflight`、工具、agent port、Git worktree、GitHub egress、repo/issue/PR 只读探测和观测原文。只报告 `GH_TOKEN`/`GITHUB_TOKEN` 是否存在和来源 key，不打印值。当 auth-broker 配置存在时，`tokenCoverage.source="auth-broker"`、`credentialSource="broker-issued-token"` 且 runner env token 不是成功前提；当仅 env token 存在时，`credentialSource="env-token"` 且 `authBroker.nextAction="use-env-token-until-auth-broker-live"`；两者都缺失时顶层 `ok=false`、`runnerDisposition=infra-blocked`、`degradedReason=auth-broker-needed`，`tokenCoverage.missing` 同时列出 `GH_TOKEN` 与 `GITHUB_TOKEN`，并输出 `authBroker.source="broker/auth-broker-needed"`、`capability.source="missing-token"`。该 `auth-missing` 的 scope 是 `scheduler-runner-env`，不能简化成“当前 active runner/dev container 不能创建 PR”；默认视图必须带 `scopeBoundary` 和 `activeRunnerPrCapability`。GitHub DNS/API 连接失败应归类为 `failureKind=github-transient`、`degradedReason=github-dns-api-transient`，并带 `retryable=true`、`commanderAction=retry-backoff-or-keep-running-if-heartbeat-fresh` 和有界 `githubTransient.failedProbes`；调用方应重试/退避，且在任务 heartbeat/trace 新鲜时继续监督，不把它当成 auth 缺失或 PR 语义失败。`prCapability` 是 runner-facing 合同摘要，必须包含目标分支、token/auth 来源、`systemGhBinaryRequiredForWrites=false`、UniDesk REST `bun scripts/cli.ts gh` 可用性、push dry-run/PR create dry-run 的 `writesRemote=false`、expected PR handoff、真实 PR 创建需要 commander 授权和 `gh pr merge` 的 `unsupported-command` 边界；系统 `gh` binary 缺失只进入 `tools.systemGhBinary`，不得误判为 UniDesk REST `gh` CLI 不可用。`--remote` 在 runner-like 环境里不再依赖本地 `unidesk-backend-core`、`unidesk-database`、`baidu-netdisk-backend` 容器存在；这些缺失只作为本地观测证据。若远程控制面可达，则继续走远程控制面结果；若远程控制面不可达，则结构化返回 `failureKind=control-plane-missing` / `degradedReason=remote-control-plane-unreachable`，而不是把本地 `backend-core-container-missing` 当作最终阻塞。`--pr-create-dry-run` 不 POST GitHub，只证明 runner 内 PR body 生成、`scripts/cli.ts gh pr create --dry-run` 和 branch 参数形态可用；服务端创建权限仍以 token/auth broker、repo/issue/PR read、push dry-run 和最终授权后的真实 PR 创建结果为准。
 - `codex task <taskId>` 通过 Code Queue 私有代理按任务 ID 查询结构化审阅摘要；默认只返回任务身份、执行 Provider、工作目录、attempt 计数、原始 prompt、最终 response、最后错误和渐进披露命令，适合指挥官审阅完成未读任务且避免上下文爆炸。`--detail` 仍是有界详细摘要：默认只返回少量 attempt/tool 行、短 prompt/response/stderr/feedback 预览和 omitted/truncated 元数据；需要完整 prompt/response 文本或更多 tool/attempt 细节时再显式加 `--full`、`--tool-limit N`、`--trace` 或 `codex output`。该摘要读取默认由主 server `code-queue-mgr` 从 PostgreSQL 返回，不依赖 D601 `code-queue-read` Service 可用。
 - `codex tasks [--view supervisor|full] [--queue id] [--status succeeded|running|queued|failed|canceled|judging|retry_wait[,..]] [--unread|--unread-only] [--limit N] [--before-id id]` 通过同一私有代理输出渐进式披露视图。默认 `supervisor` 是低噪声指挥官视图，只返回 `activeRunning`、`running`、`completedUnread`、`recentCompleted`、`queued`、`activity`、`commanderConcurrency` 和 `executionDiagnostics` 的紧凑行；`activeRunning.count` 是 running+judging 的状态计数，`exact=true` 时来自 queue summary counts，`running.returned` 和 `activeRunning.rowPage.returned` 只是本次返回的紧凑行数。`commanderConcurrency.activeRunnerCount` 是并发策略应使用的 active/running 计数，等于 `activity.effectiveActiveTaskCount`；15 并发策略按 `15 - activeRunnerCount` 计算剩余窗口。`commanderConcurrency.splitBrainDisposition=live-count-as-active` 表示 split-brain 有 fresh heartbeat 证据，应继续监督并计入 active；`interventionRequired=true` 才提示介入。prompt/body 只给短预览和原始字符数，`running`/`completedUnread`/`queued` 默认只返回一个有界小页并通过 section `commands.next` 继续分页，`recentCompleted` 默认限量且不重复 `completedUnread` 未读终态，不嵌入完整 Trace、final response 或全量 overview。`--limit` 在 supervisor 中主要是扫描/分页预算，不是返回几十条肥行的开关；CLI 安全上限是 100，输出会在 `filters.requestedLimit`、`filters.effectiveLimit`、`filters.limitCapped` 和 `disclosure.limitPolicy` 说明显式请求是否被 capped；底层 overview 拉取预算独立显示在 `source.requestedLimit` / `source.effectiveLimit`，所以 `--limit 260` 应显示 requested=260、effective=100、source requested/effective=200，而不是只露出一个含糊的 `limit`。`--unread` 是 `--unread-only` 的别名，必须只保留未读终态；`--status` 必须真实过滤支持的状态，未知参数或未知状态必须结构化失败。需要更详细当前页任务行时显式使用 `--view full` 或 `--full`，仍受 `--limit` 和 `--before-id` 分页约束。
diff --git a/docs/reference/code-queue-supervision.md b/docs/reference/code-queue-supervision.md
index 06d797f1..833fe25d 100644
--- a/docs/reference/code-queue-supervision.md
+++ b/docs/reference/code-queue-supervision.md
@@ -251,6 +251,14 @@ bun scripts/cli.ts codex pr-preflight --remote --issue <issue-number>
 - 没有 token、凭证、临时日志或构建产物进入 commit、PR body 或评论。
 - 未授权 runner 收口的 PR 由指挥官审查并决定是否 merge；已授权 runner 收口的普通 PR 在合并后仍要验证目标分支远端 commit 可见，并按态势更新 issue/#20/#24。
 
+### Runner Resume 收口
+
+PR 小修、冲突、rebase、补测和 reviewer feedback 默认优先 resume 原 Code Queue task，而不是派 replacement runner。正式入口是 `bun scripts/cli.ts codex resume <taskId> --prompt-file <path> [--resume-id id]`；prompt 仍必须来自位置参数、`--prompt-stdin` 或 `--prompt-file` 三选一，复杂多行内容优先文件或 stdin。真实 resume 成功只应返回 taskId、resumeId/turnId、`deliveryState`、是否复用原 `codexThreadId`/session、有界 trace confirmation 和后续 `codex task/detail/trace/output` 查询命令，不回显完整 prompt。
+
+`codex resume` 只用于终态或 awaiting-closeout task。running/judging task 必须结构化失败并提示改用 `codex steer`；不存在 task、不可恢复状态或运行面不支持 follow-up turn 时必须 fail closed，不得伪装成新的 `codex submit`。同一个 `resumeId` 加同 prompt 必须 duplicate-suppressed；同一个 `resumeId` 加不同 prompt 必须 409 conflict；delivery timeout 或确认缺失时输出 `deliveryUnconfirmed` 和确认命令，指挥官先查 trace，再用同一 `resumeId` 重试。
+
+replacement runner 只用于方向明显错误、质量不可接受、原 task 上下文不可恢复、原分支/PR 已废弃，或 resume 结构化 blocker 已证明无法继续的情况。关闭或替换旧 PR 时必须在 PR/body/final response 中说明 superseded/replacement 关系，避免 competing branch 扩散。
+
 ## 监控
 
 指挥官必须用 task 级和 queue 级证据监控 Code Queue，不能只看单一状态字段。
@@ -265,6 +273,7 @@ bun scripts/cli.ts codex pr-preflight --remote --issue <issue-number>
 - `bun scripts/cli.ts codex tasks --status succeeded --unread --limit N`：按具体终态过滤监督结果；不支持的 status filter 必须显式失败，不能扩大为未过滤结果。
 - `bun scripts/cli.ts codex task <taskId>`：默认只查看原始 prompt、最终 response、最后错误和 drill-down 命令，这是完成未读任务审阅的第一步。
 - 当默认审阅摘要不足时，再逐级使用 `bun scripts/cli.ts codex task <taskId> --detail`、`bun scripts/cli.ts codex task <taskId> --trace --limit N` 或 `codex output`。
+- `bun scripts/cli.ts codex resume <taskId> --prompt-file <path>`：对已终态或 awaiting-closeout 的原 task 追加后续修正 turn，适合 PR 小修、冲突、rebase、补测和 review 修正；running/judging task 改用 `codex steer`。
 - 当 master 控制面状态和 D601 scheduler 状态看起来分裂时，使用 `docs/reference/observability.md` 中的活性规则判断。
 
 默认 supervisor 视图必须保持低噪声。`activeRunning.count` 是指挥官 active running 计数，来源是 queue summary 的 status counts 时 `activeRunning.exact=true`，用于 redline 判断；`activeRunning.rowPage.returned` / `running.returned` 只表示本次返回的紧凑任务行。`activeRunning.redline` 必须写明 `countField`、routine target、burst redline、hard redline、`state` 和 `decisionReady`；只有 `decisionReady=true` 时，才能直接用该 count 做红线/补派判断。`running`、`completedUnread` 和 `queued` 即使传入较大的 `--limit`，默认也只返回一个很小的有界页，并通过 section `commands.next` 继续分页；`--limit` 保留为扫描/分页预算和 full view 返回预算，不得让一次 supervisor 调用输出几十条肥行。每个任务行只应带 task id 和必要摘要，`show`、`detail`、`trace`、`output`、`full`、`read` 使用 section template 表达，让下一步渐进披露动作明确且不重复；默认不得嵌入完整 queue 列表、完整 final response、raw output 页或完整 trace 行。`recentCompleted` 必须默认限量，且不得重复 `completedUnread` 里的未读终态，避免完成历史把当前 running、阻塞和未读审阅挤出视野；需要完整当前页时显式使用 `--view full`。`executionDiagnostics` 只能展示有界 task-id/reason 预览、总数、截断标记和 omitted counts；需要全量诊断时使用输出中的 raw command。`commands.read` 只是在人工审阅后的建议命令，listing 命令绝不能自动执行。
diff --git a/scripts/cli.ts b/scripts/cli.ts
index c4e47e16..28e91eac 100644
--- a/scripts/cli.ts
+++ b/scripts/cli.ts
@@ -83,6 +83,24 @@ function displayCommandName(parts: string[]): string {
     }
     return shown.join(" ");
   }
+  if (parts[0] === "codex" && parts[1] === "resume" && parts[2] !== undefined) {
+    const shown = ["codex", "resume", parts[2]];
+    const shownValueOptions = new Set(["--prompt-file", "--file", "--resume-id", "--resumeId"]);
+    const hasPromptFile = parts.includes("--prompt-file") || parts.includes("--file");
+    const hasPromptStdin = parts.includes("--prompt-stdin") || parts.includes("--stdin");
+    const hasHelp = parts.slice(3).some(isHelpToken);
+    if (!hasPromptFile && !hasPromptStdin && !hasHelp) shown.push("<prompt:redacted>");
+    for (let index = 3; index < parts.length; index += 1) {
+      const part = parts[index] ?? "";
+      if (!part.startsWith("--")) continue;
+      shown.push(part);
+      if (shownValueOptions.has(part)) {
+        shown.push(parts[index + 1] ?? "<missing>");
+        index += 1;
+      }
+    }
+    return shown.join(" ");
+  }
   if (parts[0] === "commander" && parts[1] === "approval" && parts[2] === "request") {
     const shown: string[] = [];
     for (let index = 0; index < parts.length; index += 1) {
diff --git a/scripts/code-queue-resume-contract-test.ts b/scripts/code-queue-resume-contract-test.ts
new file mode 100644
index 00000000..3f11c852
--- /dev/null
+++ b/scripts/code-queue-resume-contract-test.ts
@@ -0,0 +1,309 @@
+import { spawnSync } from "node:child_process";
+import { writeFileSync, unlinkSync } from "node:fs";
+import { join } from "node:path";
+import { tmpdir } from "node:os";
+import { codexResumeTaskForTest } from "./src/code-queue";
+import { findResumeTraceConfirmation, resumeDuplicateDecision, resumeTraceText } from "../src/components/microservices/code-queue/src/resume-confirmation";
+import type { QueueTask } from "../src/components/microservices/code-queue/src/types";
+
+type JsonRecord = Record<string, unknown>;
+
+function assertCondition(condition: unknown, message: string, detail: JsonRecord = {}): void {
+  if (!condition) throw new Error(`${message}: ${JSON.stringify(detail)}`);
+}
+
+function nestedRecord(value: unknown, path: string[]): JsonRecord {
+  let current: unknown = value;
+  for (const key of path) {
+    assertCondition(current !== null && typeof current === "object" && !Array.isArray(current), "expected object while traversing JSON", { path, key, current });
+    current = (current as JsonRecord)[key];
+  }
+  assertCondition(current !== null && typeof current === "object" && !Array.isArray(current), "expected nested object", { path, current });
+  return current as JsonRecord;
+}
+
+function runCli(args: string[], stdin?: string): { status: number | null; stdout: string; stderr: string; json: JsonRecord | null } {
+  const result = spawnSync("bun", ["scripts/cli.ts", ...args], {
+    cwd: process.cwd(),
+    input: stdin,
+    encoding: "utf8",
+  });
+  const stdout = String(result.stdout || "");
+  let json: JsonRecord | null = null;
+  try {
+    json = JSON.parse(stdout) as JsonRecord;
+  } catch {
+    json = null;
+  }
+  return { status: result.status, stdout, stderr: String(result.stderr || ""), json };
+}
+
+function fixtureTask(): QueueTask {
+  const at = "2026-05-23T00:00:00.000Z";
+  return {
+    id: "codex_resume_fixture",
+    queueId: "default",
+    queueEnteredAt: at,
+    prompt: "base",
+    basePrompt: "base",
+    referenceTaskIds: [],
+    referenceInjection: null,
+    providerId: "D601",
+    cwd: "/workspace/unidesk",
+    model: "gpt-5.5",
+    reasoningEffort: null,
+    executionMode: "default",
+    maxAttempts: 99,
+    status: "succeeded",
+    createdAt: at,
+    updatedAt: at,
+    startedAt: at,
+    finishedAt: "2026-05-23T00:10:00.000Z",
+    readAt: null,
+    currentAttempt: 1,
+    currentMode: "initial",
+    codexThreadId: "thread_resume_fixture",
+    activeTurnId: null,
+    finalResponse: "done",
+    lastError: null,
+    lastJudge: null,
+    judgeFailCount: 0,
+    promptHistory: [],
+    output: [],
+    events: [],
+    attempts: [],
+    cancelRequested: false,
+    nextPrompt: null,
+    nextMode: null,
+  };
+}
+
+function deterministicResumeId(taskId: string, prompt: string): string {
+  return `resume_${Bun.SHA256.hash(`unidesk-code-queue-resume:v1\0${taskId}\0${prompt}`, "hex").slice(0, 24)}`;
+}
+
+function assertDryRunPrompt(response: JsonRecord, expectedText: string): void {
+  assertCondition(response.ok === true, "CLI dry-run should succeed", response);
+  const data = nestedRecord(response.data, []);
+  assertCondition(data.dryRun === true, "dry-run response should expose dryRun=true", data);
+  const request = nestedRecord(response.data, ["request"]);
+  assertCondition(request.method === "POST", "dry-run should expose request method", request);
+  assertCondition(request.path === "/api/tasks/codex_test_task/resume", "dry-run should expose resume path", request);
+  assertCondition(request.stableProxyPath === "/api/microservices/code-queue/proxy/api/tasks/codex_test_task/resume", "dry-run should expose stable proxy path", request);
+  assertCondition(request.resumeId === deterministicResumeId("codex_test_task", expectedText), "dry-run should expose deterministic resumeId", request);
+  const prompt = nestedRecord(response.data, ["request", "body", "prompt"]);
+  assertCondition(prompt.text === expectedText, "dry-run prompt text mismatch", prompt);
+  assertCondition(prompt.chars === expectedText.length, "dry-run prompt char count mismatch", prompt);
+  const commands = nestedRecord(response.data, ["commands"]);
+  assertCondition(String(commands.run || "").includes(`--resume-id ${String(request.resumeId)}`), "dry-run should expose same resumeId run command", commands);
+}
+
+export function runCodeQueueResumeContract(): JsonRecord {
+  const positional = runCli(["codex", "resume", "codex_test_task", "fix the PR conflict", "--dry-run"]);
+  assertDryRunPrompt(positional.json ?? {}, "fix the PR conflict");
+  assertCondition(String(positional.json?.command || "").includes("<prompt:redacted>"), "outer command should redact positional resume prompt", positional.json ?? {});
+  assertCondition(!String(positional.json?.command || "").includes("fix the PR conflict"), "outer command must not echo positional resume prompt", positional.json ?? {});
+
+  const stdin = runCli(["codex", "resume", "codex_test_task", "--prompt-stdin", "--dry-run"], "stdin resume prompt\n");
+  assertDryRunPrompt(stdin.json ?? {}, "stdin resume prompt\n");
+
+  const promptFile = join(tmpdir(), `unidesk-code-queue-resume-${process.pid}.txt`);
+  writeFileSync(promptFile, "file resume prompt", "utf8");
+  try {
+    const fromFile = runCli(["codex", "resume", "codex_test_task", "--prompt-file", promptFile, "--dry-run"]);
+    assertDryRunPrompt(fromFile.json ?? {}, "file resume prompt");
+  } finally {
+    unlinkSync(promptFile);
+  }
+
+  const duplicateSource = runCli(["codex", "resume", "codex_test_task", "positional", "--prompt-stdin", "--dry-run"], "stdin\n");
+  assertCondition(duplicateSource.status !== 0, "duplicate prompt source should fail", duplicateSource.json ?? { stdout: duplicateSource.stdout });
+  assertCondition(String(nestedRecord(duplicateSource.json, ["error"]).message || "").includes("exactly one prompt source"), "duplicate prompt source error should be explicit", duplicateSource.json ?? {});
+
+  const help = runCli(["codex", "help"]);
+  const usage = Array.isArray(nestedRecord(help.json?.data, []).usage) ? nestedRecord(help.json?.data, []).usage as unknown[] : [];
+  assertCondition(usage.some((line) => String(line).includes("codex resume <taskId>")), "codex help should list resume", { usage: usage.map(String) });
+
+  let dryRunFetchCount = 0;
+  const dryRunDirect = codexResumeTaskForTest("direct_task", ["do not send", "--dry-run"], () => {
+    dryRunFetchCount += 1;
+    return { ok: true, status: 200, body: { ok: true } };
+  });
+  assertCondition(dryRunFetchCount === 0, "dry-run must not call stable proxy helper", { dryRunFetchCount, dryRunDirect });
+
+  const longPrompt = `${"x".repeat(480)}-tail-secret-marker`;
+  const longDryRun = codexResumeTaskForTest("direct_task", [longPrompt, "--dry-run"], () => {
+    throw new Error("dry-run should not fetch");
+  }) as JsonRecord;
+  const longPreview = nestedRecord(longDryRun, ["request", "body", "prompt"]);
+  assertCondition(longPreview.truncated === true, "long dry-run prompt should be truncated", longPreview);
+  assertCondition(!String(longPreview.text || "").includes("tail-secret-marker"), "long dry-run must not leak prompt tail", longPreview);
+
+  let fetchPath = "";
+  let fetchMethod = "";
+  let fetchPrompt = "";
+  let fetchResumeId = "";
+  const success = codexResumeTaskForTest("direct_task", ["resume this context"], (path, init) => {
+    fetchPath = path;
+    fetchMethod = String(init?.method || "");
+    fetchPrompt = String((init?.body as JsonRecord | undefined)?.prompt || "");
+    fetchResumeId = String((init?.body as JsonRecord | undefined)?.resumeId || "");
+    return {
+      ok: true,
+      status: 202,
+      body: {
+        ok: true,
+        accepted: true,
+        duplicateSuppressed: false,
+        deliveryState: "queued_for_existing_thread",
+        resumeId: fetchResumeId,
+        turnId: 9,
+        reuseOriginalThread: true,
+        originalCodexThreadId: "thread_original",
+        codexThreadId: "thread_original",
+        traceConfirmation: {
+          taskId: "direct_task",
+          resumeId: fetchResumeId,
+          found: true,
+          accepted: true,
+          deliveryState: "queued_for_existing_thread",
+          matchCount: 1,
+          trace: { seq: 9, at: "2026-05-23T00:00:09.000Z", method: "turn/resume", resumeId: fetchResumeId, promptChars: 19, promptHash: "hash", promptOmitted: true, source: "output" },
+          duplicateSuppressionKey: fetchResumeId,
+          promptOmitted: true,
+        },
+        task: { id: "direct_task", status: "queued", codexThreadId: "thread_original", currentAttempt: 1, currentMode: "initial", prompt: "hidden" },
+        queue: { activeTaskIds: [], queuedTaskIds: ["direct_task"] },
+      },
+    };
+  }) as JsonRecord;
+  assertCondition(fetchPath === "/api/microservices/code-queue/proxy/api/tasks/direct_task/resume", "non-dry-run should use stable resume path", { fetchPath });
+  assertCondition(fetchMethod === "POST", "non-dry-run should POST", { fetchMethod });
+  assertCondition(fetchPrompt === "resume this context", "non-dry-run should send raw prompt in body", { fetchPrompt });
+  assertCondition(fetchResumeId === deterministicResumeId("direct_task", "resume this context"), "non-dry-run should send deterministic resumeId", { fetchResumeId });
+  assertCondition(nestedRecord(success, ["resume"]).accepted === true, "successful resume should report accepted=true", success);
+  assertCondition(nestedRecord(success, ["resume"]).reusedCodexThread === true, "successful resume should report thread reuse", success);
+  assertCondition(nestedRecord(success, ["resume"]).promptOmitted === true, "successful resume should mark prompt omitted", success);
+  assertCondition(nestedRecord(success, ["resume"]).deliveryState === "queued_for_existing_thread", "successful resume should expose delivery state", success);
+  assertCondition(!JSON.stringify(success).includes("resume this context"), "successful resume must not echo prompt text", success);
+
+  const explicitResumeId = "resume_manual_12345";
+  const duplicateSuppressed = codexResumeTaskForTest("direct_task", ["same prompt", "--resume-id", explicitResumeId], (_path, init) => {
+    assertCondition((init?.body as JsonRecord | undefined)?.resumeId === explicitResumeId, "explicit resumeId should be sent unchanged", (init?.body as JsonRecord | undefined) ?? {});
+    return {
+      ok: true,
+      status: 200,
+      body: {
+        ok: true,
+        accepted: true,
+        duplicateSuppressed: true,
+        deliveryState: "duplicate_suppressed",
+        resumeId: explicitResumeId,
+        reuseOriginalThread: true,
+        originalCodexThreadId: "thread_original",
+        codexThreadId: "thread_original",
+        traceConfirmation: {
+          taskId: "direct_task",
+          resumeId: explicitResumeId,
+          found: true,
+          accepted: true,
+          deliveryState: "queued_for_existing_thread",
+          matchCount: 1,
+          trace: { seq: 11, at: "2026-05-23T00:00:11.000Z", method: "turn/resume", resumeId: explicitResumeId, promptChars: 11, promptHash: "hash2", promptOmitted: true, source: "output" },
+          duplicateSuppressionKey: explicitResumeId,
+        },
+        task: { id: "direct_task", status: "queued", codexThreadId: "thread_original", prompt: "hidden" },
+        queue: { queuedTaskIds: ["direct_task"] },
+      },
+    };
+  }) as JsonRecord;
+  assertCondition(nestedRecord(duplicateSuppressed, ["resume"]).status === "duplicate_suppressed", "duplicate resume should expose suppression status", duplicateSuppressed);
+  assertCondition(nestedRecord(duplicateSuppressed, ["resume"]).duplicateSuppressed === true, "duplicate resume should expose duplicateSuppressed", duplicateSuppressed);
+
+  const conflictPrompt = "changed resume request requested-secret-marker";
+  const conflict = codexResumeTaskForTest("direct_task", [conflictPrompt, "--resume-id", explicitResumeId], () => ({
+    ok: false,
+    status: 409,
+    body: {
+      ok: false,
+      error: "resumeId already exists with a different prompt hash",
+      accepted: false,
+      deliveryState: "not_accepted",
+      resumeId: explicitResumeId,
+      existingPromptHash: "old",
+      requestedPromptHash: "new",
+      traceConfirmation: {
+        taskId: "direct_task",
+        resumeId: explicitResumeId,
+        found: true,
+        accepted: true,
+        deliveryState: "queued_for_existing_thread",
+        matchCount: 1,
+        trace: { seq: 11, at: "2026-05-23T00:00:11.000Z", method: "turn/resume", resumeId: explicitResumeId, promptChars: 11, promptHash: "old", promptOmitted: true, source: "output" },
+      },
+      task: { id: "direct_task", status: "queued", prompt: `${"hidden ".repeat(80)}task-secret-marker` },
+    },
+  })) as JsonRecord;
+  assertCondition(conflict.ok === false, "resumeId conflict should fail", conflict);
+  assertCondition(nestedRecord(conflict, ["resume"]).status === "not_accepted", "conflict should expose not_accepted", conflict);
+  assertCondition(!JSON.stringify(conflict).includes("requested-secret-marker"), "conflict must not echo requested prompt", conflict);
+  assertCondition(!JSON.stringify(conflict).includes("task-secret-marker"), "conflict must not echo full task prompt by default", conflict);
+
+  const runningRejection = codexResumeTaskForTest("running_task", ["use steer instead"], () => ({
+    ok: false,
+    status: 409,
+    body: {
+      ok: false,
+      error: "task is active: running",
+      accepted: false,
+      deliveryState: "not_accepted",
+      disposition: "use-steer-for-active-task",
+      resumeId: deterministicResumeId("running_task", "use steer instead"),
+      task: { id: "running_task", status: "running", terminalStatus: null, prompt: "hidden active task" },
+    },
+  })) as JsonRecord;
+  assertCondition(runningRejection.ok === false, "running task resume should fail closed", runningRejection);
+  assertCondition(nestedRecord(runningRejection, ["resume"]).reason === "use-steer-for-active-task", "running resume should route to steer", runningRejection);
+  assertCondition(String(nestedRecord(runningRejection, ["commands"]).steer || "").includes("codex steer running_task"), "running rejection should provide steer command", runningRejection);
+
+  const notFound = codexResumeTaskForTest("missing_task", ["prompt"], () => ({ ok: false, status: 404, body: { ok: false, error: "task not found" } })) as JsonRecord;
+  assertCondition(notFound.ok === false, "missing task resume should fail", notFound);
+  assertCondition(nestedRecord(notFound, ["resume"]).status === "not_accepted", "missing task should be not accepted", notFound);
+
+  const task = fixtureTask();
+  const resumeId = "resume_contract_12345";
+  const prompt = "continue the same PR";
+  task.output.push({ seq: 9, at: "2026-05-23T00:00:09.000Z", channel: "user", method: "turn/resume", itemId: resumeId, text: resumeTraceText(resumeId, prompt) });
+  const confirmation = findResumeTraceConfirmation(task, resumeId);
+  assertCondition(confirmation.found === true && confirmation.accepted === true, "confirmation should find resume trace by resumeId", confirmation as unknown as JsonRecord);
+  assertCondition(confirmation.trace?.promptChars === prompt.length, "confirmation should expose prompt chars without prompt text", (confirmation.trace ?? {}) as unknown as JsonRecord);
+  assertCondition(!JSON.stringify(confirmation).includes(prompt), "confirmation must not echo prompt text", confirmation as unknown as JsonRecord);
+  const duplicate = resumeDuplicateDecision(task, resumeId, prompt);
+  assertCondition(duplicate.duplicate === true && duplicate.conflict === false, "same resumeId and prompt should be duplicate-suppressed", duplicate as unknown as JsonRecord);
+  const localConflict = resumeDuplicateDecision(task, resumeId, "changed prompt");
+  assertCondition(localConflict.duplicate === false && localConflict.conflict === true, "same resumeId with changed prompt should conflict", localConflict as unknown as JsonRecord);
+  const newlineResumeId = "resume_contract_newline";
+  const newlinePrompt = "keep trailing newline\n";
+  task.output.push({ seq: 10, at: "2026-05-23T00:00:10.000Z", channel: "user", method: "turn/resume", itemId: newlineResumeId, text: resumeTraceText(newlineResumeId, newlinePrompt) });
+  const newlineDuplicate = resumeDuplicateDecision(task, newlineResumeId, newlinePrompt);
+  assertCondition(newlineDuplicate.duplicate === true && newlineDuplicate.conflict === false, "duplicate suppression should use exact prompt hash, including trailing newline", newlineDuplicate as unknown as JsonRecord);
+
+  return {
+    ok: true,
+    checks: [
+      "resume positional/stdin/file dry-runs",
+      "bounded disclosure and outer command redaction",
+      "non-dry-run sends resumeId and omits prompt from output",
+      "terminal resume accepted with thread reuse metadata",
+      "duplicate suppression and conflict behavior",
+      "running task fails closed with steer command",
+      "missing task fails closed",
+      "local resume trace confirmation helpers",
+      "exact prompt hash survives trailing newline",
+    ],
+  };
+}
+
+if (import.meta.main) {
+  process.stdout.write(`${JSON.stringify(runCodeQueueResumeContract(), null, 2)}\n`);
+}
diff --git a/scripts/src/check.ts b/scripts/src/check.ts
index 3241df84..797a5138 100644
--- a/scripts/src/check.ts
+++ b/scripts/src/check.ts
@@ -370,6 +370,7 @@ export function runChecks(config: UniDeskConfig, options: CheckOptions = default
     items.push(commandItem("code-queue:prompt-lint-contract", ["bun", "scripts/code-queue-prompt-lint-contract-test.ts"], 30_000));
     items.push(commandItem("code-queue:cli-steer-contract", ["bun", "scripts/code-queue-cli-steer-test.ts"], 30_000));
     items.push(commandItem("code-queue:steer-confirmation-contract", ["bun", "scripts/code-queue-steer-confirmation-contract-test.ts"], 30_000));
+    items.push(commandItem("code-queue:resume-contract", ["bun", "scripts/code-queue-resume-contract-test.ts"], 30_000));
     items.push(commandItem("code-queue:read-terminal-contract", ["bun", "scripts/code-queue-cli-read-terminal-contract-test.ts"], 30_000));
     items.push(commandItem("code-queue:submit-prompt-contract", ["bun", "scripts/code-queue-cli-submit-prompt-contract-test.ts"], 30_000));
     items.push(commandItem("code-queue:submit-execution-mode-contract", ["bun", "scripts/code-queue-submit-execution-mode-contract-test.ts"], 30_000));
@@ -407,6 +408,7 @@ export function runChecks(config: UniDeskConfig, options: CheckOptions = default
     items.push(skippedItem("code-queue:prompt-lint-contract", "Code Queue prompt live-authorization lint contract is opt-in with script checks", "--scripts-typecheck or --full"));
     items.push(skippedItem("code-queue:cli-steer-contract", "Code Queue steer CLI contract is opt-in with script checks", "--scripts-typecheck or --full"));
     items.push(skippedItem("code-queue:steer-confirmation-contract", "Code Queue steer delivery confirmation contract is opt-in with script checks", "--scripts-typecheck or --full"));
+    items.push(skippedItem("code-queue:resume-contract", "Code Queue resume CLI and delivery contract is opt-in with script checks", "--scripts-typecheck or --full"));
     items.push(skippedItem("code-queue:read-terminal-contract", "Code Queue terminal read contract is opt-in with script checks", "--scripts-typecheck or --full"));
     items.push(skippedItem("code-queue:submit-prompt-contract", "Code Queue submit prompt contract is opt-in with script checks", "--scripts-typecheck or --full"));
     items.push(skippedItem("code-queue:submit-execution-mode-contract", "Code Queue submit execution-mode contract is opt-in with script checks", "--scripts-typecheck or --full"));
diff --git a/scripts/src/code-queue.ts b/scripts/src/code-queue.ts
index f6a30374..622e261e 100644
--- a/scripts/src/code-queue.ts
+++ b/scripts/src/code-queue.ts
@@ -3,6 +3,7 @@ import { runCommand } from "./command";
 import { type UniDeskConfig, repoRoot, rootPath } from "./config";
 import { coreInternalFetch } from "./microservices";
 import { previewJson } from "./preview";
+import { createResumeId, type ResumeDeliveryState } from "../../src/components/microservices/code-queue/src/resume-confirmation";
 import { createSteerId, type SteerDeliveryState } from "../../src/components/microservices/code-queue/src/steer-confirmation";
 import {
   codeAgentPortForModel,
@@ -234,6 +235,14 @@ interface CodexSteerConfirmOptions {
   raw: boolean;
 }
 
+interface CodexResumeOptions {
+  prompt: string;
+  resumeId: string | undefined;
+  dryRun: boolean;
+  full: boolean;
+  raw: boolean;
+}
+
 type CodexSteerFailureReason =
   | "backend-core-unreachable"
   | "code-queue-microservice-unregistered"
@@ -245,6 +254,8 @@ type CodexSteerFailureReason =
   | "invalid-proxy-response";
 
 type CodexSteerAcceptanceStatus = "accepted" | "not_accepted" | "accepted_response_timeout" | "unknown";
+type CodexResumeAcceptanceStatus = "queued" | "duplicate_suppressed" | "not_accepted" | "accepted_response_timeout" | "unknown";
+type CodexResumeDeliveryState = ResumeDeliveryState;
 
 interface ClassifiedCodexSteerError {
   reason: CodexSteerFailureReason;
@@ -468,6 +479,10 @@ function rawSteerConfirmationCommand(taskId: string, steerId: string): string {
   return `bun scripts/cli.ts microservice proxy code-queue ${steerConfirmationPath(taskId, steerId)} --raw`;
 }
 
+function resumeCommand(taskId: string, resumeId: string): string {
+  return `bun scripts/cli.ts codex resume ${taskId} --prompt-file <path> --resume-id ${resumeId}`;
+}
+
 function nonNegativeIntegerEnv(name: string, fallback: number): number {
   const raw = process.env[name];
   if (raw === undefined || raw.trim().length === 0) return fallback;
@@ -2595,6 +2610,10 @@ export function codexSteerTaskForTest(taskId: string, optionArgs: string[], fetc
   return codexSteerTask(taskId, optionArgs, fetcher);
 }
 
+export function codexResumeTaskForTest(taskId: string, optionArgs: string[], fetcher: CodexResponseFetcher): unknown {
+  return codexResumeTask(taskId, optionArgs, fetcher);
+}
+
 export function codexSteerTraceConfirmForTest(taskId: string, optionArgs: string[], fetcher: CodexResponseFetcher): unknown {
   return codexSteerTraceConfirm(taskId, optionArgs, fetcher);
 }
@@ -4071,6 +4090,13 @@ const steerPromptValueOptions = new Set([
   "--steerId",
 ]);
 
+const resumePromptValueOptions = new Set([
+  "--prompt-file",
+  "--file",
+  "--resume-id",
+  "--resumeId",
+]);
+
 function referenceTaskIdsFromOptions(args: string[]): string[] {
   const values = optionValues(args, ["--reference-task-id", "--reference", "--ref"]);
   const ids: string[] = [];
@@ -4207,6 +4233,22 @@ function parseSteerConfirmOptions(args: string[]): CodexSteerConfirmOptions {
   return { steerId, raw: hasFlag(args, "--raw") };
 }
 
+function parseResumeOptions(args: string[]): CodexResumeOptions {
+  assertKnownOptions(args, {
+    flags: ["--prompt-stdin", "--stdin", "--dry-run", "--full", "--raw"],
+    valueOptions: ["--prompt-file", "--file", "--resume-id", "--resumeId"],
+  }, "codex resume");
+  const resumeId = optionValue(args, ["--resume-id", "--resumeId"]);
+  if (resumeId !== undefined && !/^[A-Za-z0-9._:-]{8,128}$/u.test(resumeId)) throw new Error("--resume-id must be 8-128 chars using letters, numbers, dot, underscore, colon, or dash");
+  return {
+    prompt: promptFromArgs(args, "codex resume", resumePromptValueOptions),
+    resumeId,
+    dryRun: hasFlag(args, "--dry-run"),
+    full: hasFlag(args, "--full") || hasFlag(args, "--raw"),
+    raw: hasFlag(args, "--raw"),
+  };
+}
+
 function parsePromptLintOptions(args: string[]): CodexPromptLintOptions {
   assertKnownOptions(args, {
     flags: ["--prompt-stdin", "--stdin"],
@@ -4308,6 +4350,58 @@ function compactSteerTaskConfirmation(task: unknown, steerId: string): Record<st
   };
 }
 
+function compactResumeTraceConfirmation(value: unknown, taskId: string, resumeId: string): Record<string, unknown> {
+  const record = asRecord(value) ?? {};
+  const confirmation = asRecord(record.confirmation) ?? record;
+  const trace = asRecord(confirmation.trace);
+  const compactTrace = trace === null ? null : {
+    seq: trace.seq ?? null,
+    at: trace.at ?? null,
+    method: trace.method ?? null,
+    resumeId: trace.resumeId ?? resumeId,
+    promptChars: trace.promptChars ?? null,
+    promptHash: trace.promptHash ?? null,
+    promptOmitted: true,
+    source: trace.source ?? null,
+  };
+  return {
+    taskId: asString(confirmation.taskId) || taskId,
+    resumeId: asString(confirmation.resumeId) || resumeId,
+    found: confirmation.found === true,
+    accepted: confirmation.accepted === true,
+    deliveryState: asString(confirmation.deliveryState) || (confirmation.found === true ? "queued_for_existing_thread" : "unknown"),
+    matchCount: asNumber(confirmation.matchCount, 0),
+    trace: compactTrace,
+    duplicateSuppressionKey: confirmation.duplicateSuppressionKey ?? resumeId,
+    promptOmitted: true,
+  };
+}
+
+function terminalStatusFromResumeTask(task: Record<string, unknown> | null): string {
+  return terminalStatusFromTask(task);
+}
+
+function compactResumeTaskConfirmation(task: unknown, resumeId: string, source: Record<string, unknown>): Record<string, unknown> {
+  const compact = compactSubmitTaskConfirmation(task);
+  const commands = asRecord(compact.commands) ?? {};
+  const record = asRecord(task) ?? {};
+  return {
+    ...compact,
+    currentAttempt: record.currentAttempt ?? null,
+    currentMode: record.currentMode ?? null,
+    terminalStatus: terminalStatusFromResumeTask(record) || null,
+    reusedCodexThreadId: source.originalCodexThreadId ?? source.codexThreadId ?? record.codexThreadId ?? null,
+    commands: {
+      ...commands,
+      show: `bun scripts/cli.ts codex task ${asString(compact.id) || "<taskId>"}`,
+      detail: `bun scripts/cli.ts codex task ${asString(compact.id) || "<taskId>"} --detail`,
+      trace: `bun scripts/cli.ts codex task ${asString(compact.id) || "<taskId>"} --trace --tail --limit ${defaultTraceLimit}`,
+      output: `bun scripts/cli.ts codex output ${asString(compact.id) || "<taskId>"} --tail --limit ${defaultOutputLimit}`,
+      resumeAgain: resumeCommand(asString(compact.id) || "<taskId>", resumeId),
+    },
+  };
+}
+
 function orderedUniqueStringList(values: string[]): string[] {
   const seen = new Set<string>();
   const items: string[] = [];
@@ -6461,6 +6555,147 @@ function codexSteerTraceConfirm(taskId: string, args: string[], fetcher: CodexRe
   };
 }
 
+function compactResumeRejection(taskId: string, resumeId: string, response: unknown, options: CodexResumeOptions): Record<string, unknown> {
+  const record = asRecord(response);
+  const body = responseBody(record);
+  const task = asRecord(body?.task);
+  const status = asString(task?.status);
+  const upstreamStatus = responseStatus(record);
+  const bodyError = asString(body?.error);
+  const disposition = asString(body?.disposition)
+    || (upstreamStatus === 404 || bodyError?.toLowerCase().includes("not found") ? "task-not-found" : isActiveTaskStatus(status) ? "use-steer-for-active-task" : isTerminalTaskStatus(status) ? "resume-rejected" : "not-terminal");
+  const result: Record<string, unknown> = {
+    ok: false,
+    resume: {
+      accepted: false,
+      status: "not_accepted" satisfies CodexResumeAcceptanceStatus,
+      deliveryState: "not_accepted" satisfies CodexResumeDeliveryState,
+      resumeId,
+      reason: disposition,
+      taskId,
+      taskStatus: status || null,
+      terminalStatus: terminalStatusFromResumeTask(task) || null,
+      retryable: false,
+      promptOmitted: true,
+    },
+    message: asString(body?.error) || `task ${taskId} is not resumable`,
+    commands: {
+      show: `bun scripts/cli.ts codex task ${taskId}`,
+      detail: `bun scripts/cli.ts codex task ${taskId} --detail`,
+      ...(disposition === "use-steer-for-active-task" ? { steer: `bun scripts/cli.ts codex steer ${taskId} --prompt-file <path>` } : {}),
+      supervisor: `bun scripts/cli.ts codex tasks --view supervisor --limit ${defaultTasksLimit}`,
+    },
+    upstream: {
+      status: upstreamStatus,
+      error: bodyError || null,
+    },
+    disclosure: {
+      defaultPolicy: "compact resume rejection; request prompt, upstream task body, and raw response require explicit --full or --raw",
+      full: options.full,
+      raw: options.raw,
+      defaultOmitted: ["request.body.prompt.text", "task.prompt", "task.finalResponse", "rawFailure"],
+    },
+  };
+  if (options.full) {
+    result.task = compactResumeTaskConfirmation(task, resumeId, body ?? {});
+    result.upstreamBodyPreview = previewJson(body ?? record, { maxDepth: 4, maxArrayItems: 8, maxObjectKeys: 24, maxStringLength: 600 });
+  }
+  if (options.raw) result.rawFailure = response;
+  return result;
+}
+
+function codexResumeTask(taskId: string, args: string[], fetcher: CodexResponseFetcher = coreInternalFetch): unknown {
+  const options = parseResumeOptions(args);
+  const resumeId = options.resumeId ?? createResumeId(taskId, options.prompt);
+  const targetPath = `/api/tasks/${encodeURIComponent(taskId)}/resume`;
+  const stableProxyPath = codeQueueProxyPath(targetPath);
+  const rawProxyEquivalent = codeQueueProxyEquivalentCommand(targetPath, `{"prompt":"...","resumeId":"${resumeId}"}`);
+  const prompt = textView(options.prompt, false, steerPromptPreviewChars);
+  const request = {
+    path: targetPath,
+    stableProxyPath,
+    method: "POST",
+    resumeId,
+    bodySummary: {
+      resumeId,
+      promptChars: options.prompt.length,
+      promptPreviewChars: steerPromptPreviewChars,
+      promptTruncated: prompt.truncated,
+    },
+    body: { resumeId, prompt },
+    contract: {
+      target: "terminal-or-awaiting-closeout task follow-up turn",
+      idempotency: "same resumeId and same prompt is duplicate-suppressed; same resumeId and different prompt is rejected as conflict",
+      activeTaskDisposition: "active running/judging tasks must use codex steer, not resume",
+      promptEchoPolicy: "default dry-run shows only bounded prompt preview; non-dry-run never echoes prompt text",
+    },
+  };
+  if (options.dryRun) {
+    return {
+      ok: true,
+      dryRun: true,
+      request,
+      commands: {
+        run: resumeCommand(taskId, resumeId),
+        show: `bun scripts/cli.ts codex task ${taskId}`,
+        supervisor: `bun scripts/cli.ts codex tasks --view supervisor --limit ${defaultTasksLimit}`,
+        rawProxy: rawProxyEquivalent,
+      },
+    };
+  }
+  const rawResponse = fetcher(stableProxyPath, { method: "POST", body: { prompt: options.prompt, resumeId } });
+  const record = asRecord(rawResponse);
+  const body = responseBody(record);
+  if (record?.ok !== true || body?.ok !== true) {
+    return compactResumeRejection(taskId, resumeId, rawResponse, options);
+  }
+  const responseResumeId = asString(body.resumeId) || resumeId;
+  const duplicateSuppressed = body.duplicateSuppressed === true;
+  const traceConfirmation = compactResumeTraceConfirmation(body.traceConfirmation, taskId, responseResumeId);
+  const deliveryState = asString(body.deliveryState) || asString(traceConfirmation.deliveryState) || (duplicateSuppressed ? "duplicate_suppressed" : "queued_for_existing_thread");
+  const acceptanceStatus: CodexResumeAcceptanceStatus = duplicateSuppressed ? "duplicate_suppressed" : deliveryState === "accepted_response_timeout" ? "accepted_response_timeout" : "queued";
+  const traceRecord = asRecord(traceConfirmation.trace);
+  return {
+    ok: true,
+    upstream: { ok: record.ok, status: record.status },
+    resume: {
+      accepted: true,
+      status: acceptanceStatus,
+      deliveryState,
+      resumeId: responseResumeId,
+      turnId: body.turnId ?? traceRecord?.seq ?? null,
+      taskId,
+      promptChars: options.prompt.length,
+      promptOmitted: true,
+      duplicateSuppressed,
+      duplicateSuppressionKey: responseResumeId,
+      reusedCodexThread: body.reuseOriginalThread === true,
+      originalCodexThreadId: body.originalCodexThreadId ?? null,
+      codexThreadId: body.codexThreadId ?? null,
+      deliveryUnconfirmed: deliveryState === "accepted_response_timeout",
+      outputPolicy: {
+        default: "write-confirmation",
+        promptEchoed: false,
+        taskDetailEchoed: false,
+        reason: "codex resume is a write operation; default output confirms queued delivery and provides drill-down commands without echoing prompt text or full task state.",
+      },
+    },
+    traceConfirmation,
+    task: compactResumeTaskConfirmation(body.task, responseResumeId, body),
+    queue: compactSubmitQueueConfirmation(body.queue),
+    commands: {
+      show: `bun scripts/cli.ts codex task ${taskId}`,
+      detail: `bun scripts/cli.ts codex task ${taskId} --detail`,
+      trace: `bun scripts/cli.ts codex task ${taskId} --trace --tail --limit ${defaultTraceLimit}`,
+      output: `bun scripts/cli.ts codex output ${taskId} --tail --limit ${defaultOutputLimit}`,
+      retrySameResumeId: resumeCommand(taskId, responseResumeId),
+      supervisor: `bun scripts/cli.ts codex tasks --view supervisor --limit ${defaultTasksLimit}`,
+      confirmDelivery: `bun scripts/cli.ts codex task ${taskId} --trace --tail --limit ${defaultTraceLimit}`,
+      ...(deliveryState === "accepted_response_timeout" ? { deliveryUnconfirmed: `bun scripts/cli.ts codex task ${taskId} --trace --tail --limit ${defaultTraceLimit}` } : {}),
+    },
+  };
+}
+
 export async function runCodeQueueCommand(config: UniDeskConfig, args: string[]): Promise<unknown> {
   const [action = "task", taskIdArg] = args;
   if (action === "prompt-lint" || action === "lint-prompt") {
@@ -6519,9 +6754,13 @@ export async function runCodeQueueCommand(config: UniDeskConfig, args: string[])
     const taskId = requireTaskId(taskIdArg, "codex steer");
     return codexSteerTask(taskId, args.slice(2));
   }
+  if (action === "resume") {
+    const taskId = requireTaskId(taskIdArg, "codex resume");
+    return codexResumeTask(taskId, args.slice(2));
+  }
   if (action === "steer-confirm" || action === "steer-confirmation") {
     const taskId = requireTaskId(taskIdArg, `codex ${action}`);
     return codexSteerTraceConfirm(taskId, args.slice(2));
   }
-  throw new Error("codex command must be one of: prompt-lint, submit, enqueue, task, summary, show, tasks, overview, unread, terminal-unread, output, judge, read, mark-read, dev-ready, health, skills-sync, pr-preflight, runtime-preflight, queues, queue list, queue create, queue merge, move, steer, steer-confirm, interrupt, cancel");
+  throw new Error("codex command must be one of: prompt-lint, submit, enqueue, task, summary, show, tasks, overview, unread, terminal-unread, output, judge, read, mark-read, dev-ready, health, skills-sync, pr-preflight, runtime-preflight, queues, queue list, queue create, queue merge, move, steer, resume, steer-confirm, interrupt, cancel");
 }
diff --git a/scripts/src/help.ts b/scripts/src/help.ts
index f6a7d863..d899786a 100644
--- a/scripts/src/help.ts
+++ b/scripts/src/help.ts
@@ -64,6 +64,7 @@ export function rootHelp(): unknown {
       { command: "codex dev-ready", description: "Fetch execution-container readiness, including sanitized skill injection status from /api/dev-ready." },
       { command: "codex judge <taskId> --attempt N [--dry-run] [--include-prompt]", description: "Replay one stored Code Queue attempt through the same judge context builder and MiniMax judge call path used by the live queue worker." },
       { command: "codex steer <taskId> [prompt|--prompt-file path|--prompt-stdin] [--steer-id id] [--dry-run] [--no-retry|--retry-attempts N] [--full|--raw]", description: "Push a corrective prompt into a running Code Queue task with a steerId/idempotency key; retryable tunnel aborts get bounded trace confirmation before any retry guidance." },
+      { command: "codex resume <taskId> [prompt|--prompt-file path|--prompt-stdin] [--resume-id id] [--dry-run] [--full|--raw]", description: "Queue a follow-up turn on a terminal Code Queue task, preserving the original task/thread/PR context and suppressing duplicate resumeId delivery without echoing the prompt." },
       { command: "codex steer-confirm <taskId> --steer-id <id> [--raw]", description: "Read-only lookup for a steerId in task trace so deliveryUnconfirmed can be resolved without resending the corrective prompt." },
       { command: "codex interrupt|cancel <taskId>", description: "Request interrupt for a running Code Queue task, or cancel a queued/retry_wait task, through the same private proxy." },
       { command: "codex (queues [--full|--all] | queue create <queueId> | queue merge <sourceQueueId> --into <targetQueueId> | move <taskId> --queue <queueId>)", description: "List low-noise queue summaries by default, including effective activity counts that distinguish scheduler-local queues, DB running tasks, and heartbeat-fresh runners; full queue rows require --full/--all." },
@@ -249,7 +250,7 @@ function scheduleHelp(): unknown {
 
 function codexHelp(): unknown {
   return {
-    command: "codex deploy|prompt-lint|submit|task|tasks|unread|output|read|dev-ready|skills-sync|pr-preflight|judge|steer|interrupt|cancel|queues|queue|move",
+    command: "codex deploy|prompt-lint|submit|task|tasks|unread|output|read|dev-ready|skills-sync|pr-preflight|judge|steer|resume|interrupt|cancel|queues|queue|move",
     output: "json",
     usage: [
       "bun scripts/cli.ts codex deploy <commitId> # disabled legacy deployment entry",
@@ -268,6 +269,7 @@ function codexHelp(): unknown {
       "bun scripts/cli.ts codex pr-preflight [--remote] [--push-dry-run --push-dry-run-ref refs/heads/probe/<name>] [--pr-create-dry-run --pr-create-dry-run-head <head>] [--issue N] [--full|--raw]",
       "bun scripts/cli.ts codex judge <taskId> --attempt N [--dry-run] [--include-prompt]",
       "bun scripts/cli.ts codex steer <taskId> [prompt|--prompt-file path|--prompt-stdin] [--steer-id id] [--dry-run] [--no-retry|--retry-attempts N] [--full|--raw]",
+      "bun scripts/cli.ts codex resume <taskId> [prompt|--prompt-file path|--prompt-stdin] [--resume-id id] [--dry-run] [--full|--raw]",
       "bun scripts/cli.ts codex steer-confirm <taskId> --steer-id <id> [--raw]",
       "bun scripts/cli.ts codex interrupt|cancel <taskId>",
       "bun scripts/cli.ts codex queues [--full|--all] [--limit N] [--page N|--offset N] | queue create <queueId> | queue merge <sourceQueueId> --into <targetQueueId> | move <taskId> --queue <queueId>",
diff --git a/src/components/backend-core/src/microservice-proxy.ts b/src/components/backend-core/src/microservice-proxy.ts
index 54ef7971..c57b59c8 100644
--- a/src/components/backend-core/src/microservice-proxy.ts
+++ b/src/components/backend-core/src/microservice-proxy.ts
@@ -402,7 +402,7 @@ function codeQueueK3sServiceIdForRequest(method: string, targetPath: string): st
   if (targetPath === "/api/queues" || targetPath === "/api/tasks/overview") return "code-queue-scheduler";
   if (targetPath === "/api/oa/backfill" || targetPath === "/api/notifications/claudeqq/drain" || targetPath === "/api/notifications/claudeqq/backfill") return "code-queue-scheduler";
   if (targetPath === "/api/judge/probe" || targetPath === "/api/judge/self-test" || targetPath === "/api/queue-order/self-test" || targetPath === "/api/reference-injection/self-test" || targetPath === "/api/trace-port/self-test") return "code-queue-scheduler";
-  if (/^\/api\/tasks\/[^/]+\/(?:steer|interrupt)$/u.test(targetPath)) return "code-queue-scheduler";
+  if (/^\/api\/tasks\/[^/]+\/(?:steer|resume|interrupt)$/u.test(targetPath)) return "code-queue-scheduler";
   if (/^\/api\/tasks\/[^/]+$/u.test(targetPath) && normalizedMethod === "DELETE") return "code-queue-scheduler";
   if (targetPath === "/api/dev-containers" || /^\/api\/dev-containers(?:\/[^/]+)?\/start$/u.test(targetPath)) return "code-queue-scheduler";
   if (/^\/api\/dev-containers(?:\/[^/]+)?\/status$/u.test(targetPath)) return "code-queue-scheduler";
diff --git a/src/components/microservices/code-queue/src/index.ts b/src/components/microservices/code-queue/src/index.ts
index e8e651a4..3e274f9e 100644
--- a/src/components/microservices/code-queue/src/index.ts
+++ b/src/components/microservices/code-queue/src/index.ts
@@ -137,6 +137,7 @@ import {
 import { collectRuntimePreflight, runtimePreflightJson } from "./runtime-preflight";
 import { collectSkillAvailability, collectSkillSyncPreflight, skillAvailabilityJson, skillSyncPreflightJson } from "./skill-availability";
 import { createSteerId, findSteerTraceConfirmation, normalizeSteerId, normalizeSteerPromptText, steerDuplicateDecision, steerPromptHash, steerTraceConfirmationJson, steerTraceText } from "./steer-confirmation";
+import { createResumeId, findResumeTraceConfirmation, normalizeResumeId, resumeDuplicateDecision, resumePromptHash, resumeTraceConfirmationJson, resumeTraceText } from "./resume-confirmation";
 import { configureSelfTests, runJudgeInfraSelfTest, runQueueClaimMoveSelfTest, runQueueOrderingSelfTest, runReferenceInjectionSelfTest, runStaleActiveRecoverySelfTest, runTracePortSelfTest, runTraceSummaryContractSelfTest } from "./self-tests";
 import {
   codexToolLifecycleStartedBeforeIn,
@@ -4873,6 +4874,107 @@ async function steerTask(task: QueueTask, req: Request): Promise<Response> {
   });
 }
 
+async function resumeTask(task: QueueTask, req: Request): Promise<Response> {
+  if (!serviceRoleAllowsScheduler(config.serviceRole)) return schedulerOnlyRejectResponse(req.method, `/api/tasks/${task.id}/resume`);
+  const notReady = requireDatabaseReadyForWrite(req.method, `/api/tasks/${task.id}/resume`);
+  if (notReady !== null) return notReady;
+  const body = await readJson(req);
+  const bodyRecord = typeof body === "object" && body !== null && !Array.isArray(body) ? body as Record<string, unknown> : {};
+  const prompt = typeof bodyRecord.prompt === "string" ? String(bodyRecord.prompt) : "";
+  if (prompt.trim().length === 0) return jsonResponse({ ok: false, error: "prompt is required" }, 400);
+  const resumeId = normalizeResumeId(bodyRecord.resumeId) ?? createResumeId(task.id, prompt);
+  const originalCodexThreadId = task.codexThreadId;
+  const duplicateDecision = resumeDuplicateDecision(task, resumeId, prompt, taskFullOutput(task));
+  if (duplicateDecision.duplicate) {
+    await flushDirtyTasksToDatabase(true);
+    return jsonResponse({
+      ok: true,
+      accepted: true,
+      duplicateSuppressed: true,
+      deliveryState: "duplicate_suppressed",
+      resumeId,
+      reuseOriginalThread: originalCodexThreadId !== null,
+      originalCodexThreadId,
+      codexThreadId: task.codexThreadId,
+      traceConfirmation: resumeTraceConfirmationJson(duplicateDecision.confirmation),
+      task: taskForResponse(task),
+      queue: await queueSummaryForResponse(),
+    });
+  }
+  if (duplicateDecision.conflict) {
+    return jsonResponse({
+      ok: false,
+      error: "resumeId already exists with a different prompt hash",
+      accepted: false,
+      deliveryState: "not_accepted",
+      resumeId,
+      existingPromptHash: duplicateDecision.existingPromptHash,
+      requestedPromptHash: duplicateDecision.requestedPromptHash,
+      traceConfirmation: resumeTraceConfirmationJson(duplicateDecision.confirmation),
+      task: taskForResponse(task),
+    }, 409);
+  }
+  if (task.status === "running" || task.status === "judging") {
+    return jsonResponse({
+      ok: false,
+      error: `task is active: ${task.status}`,
+      accepted: false,
+      deliveryState: "not_accepted",
+      disposition: "use-steer-for-active-task",
+      resumeId,
+      task: taskForResponse(task),
+      commands: {
+        steer: `bun scripts/cli.ts codex steer ${task.id} --prompt-file <path>`,
+        show: `bun scripts/cli.ts codex task ${task.id}`,
+      },
+    }, 409);
+  }
+  if (task.status !== "failed" && task.status !== "canceled" && task.status !== "succeeded") {
+    return jsonResponse({
+      ok: false,
+      error: `task is not resumable: ${task.status}`,
+      accepted: false,
+      deliveryState: "not_accepted",
+      disposition: "not-terminal",
+      resumeId,
+      task: taskForResponse(task),
+    }, 409);
+  }
+  const traceOutput = appendOutput(task, "user", resumeTraceText(resumeId, prompt), "turn/resume", resumeId);
+  task.status = "queued";
+  task.finishedAt = null;
+  task.readAt = null;
+  task.cancelRequested = false;
+  task.lastError = null;
+  task.maxAttempts = Math.max(task.maxAttempts, task.attempts.length + 1);
+  task.nextMode = "retry";
+  task.nextPrompt = prompt;
+  setAttemptFeedbackPrompt(task.attempts.at(-1), task.nextPrompt, "manual-resume", task.attempts.length + 1);
+  task.updatedAt = nowIso();
+  task.queueEnteredAt = task.updatedAt;
+  appendOutput(task, "system", `resume queued resumeId=${resumeId} reuseOriginalThread=${originalCodexThreadId !== null ? "true" : "false"}\n`, "manual-resume", resumeId);
+  armIdleNotification();
+  persistState();
+  scheduleQueue(queueIdOf(task));
+  await flushDirtyTasksToDatabase(true);
+  const traceConfirmation = findResumeTraceConfirmation(task, resumeId, taskFullOutput(task));
+  return jsonResponse({
+    ok: true,
+    accepted: true,
+    duplicateSuppressed: false,
+    deliveryState: traceConfirmation.found ? "queued_for_existing_thread" : "accepted_response_timeout",
+    resumeId,
+    turnId: traceOutput?.seq ?? null,
+    promptHash: resumePromptHash(prompt),
+    reuseOriginalThread: originalCodexThreadId !== null,
+    originalCodexThreadId,
+    codexThreadId: task.codexThreadId,
+    traceConfirmation: resumeTraceConfirmationJson(traceConfirmation),
+    task: taskForResponse(task),
+    queue: await queueSummaryForResponse(),
+  }, 202);
+}
+
 async function editQueuedTaskPrompt(task: QueueTask, req: Request): Promise<Response> {
   if (!serviceRoleAllowsWrite(config.serviceRole)) return readOnlyRejectResponse(req.method, `/api/tasks/${task.id}/edit`);
   const notReady = requireDatabaseReadyForWrite(req.method, `/api/tasks/${task.id}/edit`);
@@ -5797,7 +5899,7 @@ async function route(req: Request): Promise<Response> {
       if (task === null) return jsonResponse({ ok: false, error: "task not found" }, 404);
       return jsonResponse({ ok: true, summary: taskSummaryResponse(task, url) });
     }
-    const match = url.pathname.match(/^\/api\/tasks\/([^/]+)(?:\/(retry|steer|interrupt|move|read|edit))?$/u);
+    const match = url.pathname.match(/^\/api\/tasks\/([^/]+)(?:\/(retry|resume|steer|interrupt|move|read|edit))?$/u);
     if (match !== null) {
       const action = match[2];
       const taskId = decodeURIComponent(match[1] ?? "");
@@ -5812,6 +5914,7 @@ async function route(req: Request): Promise<Response> {
         : await findTaskForMutation(taskId);
       if (task === null) return jsonResponse({ ok: false, error: "task not found" }, 404);
       if (action === "retry" && req.method === "POST") return await manualRetry(task, req);
+      if (action === "resume" && req.method === "POST") return await resumeTask(task, req);
       if (action === "steer" && req.method === "POST") return await steerTask(task, req);
       if (action === "interrupt" && req.method === "POST") return await interruptTask(task, req.method);
       if (action === "move" && req.method === "POST") return await moveTaskToQueue(task, req);
diff --git a/src/components/microservices/code-queue/src/resume-confirmation.ts b/src/components/microservices/code-queue/src/resume-confirmation.ts
new file mode 100644
index 00000000..799ea878
--- /dev/null
+++ b/src/components/microservices/code-queue/src/resume-confirmation.ts
@@ -0,0 +1,142 @@
+import { createHash } from "node:crypto";
+import type { JsonValue, LiveOutput, QueueTask } from "./types";
+
+const resumeIdPattern = /^[A-Za-z0-9._:-]{8,128}$/u;
+
+export type ResumeDeliveryState = "queued_for_existing_thread" | "duplicate_suppressed" | "not_accepted" | "accepted_response_timeout" | "unknown";
+
+export interface ResumeTraceMatch {
+  seq: number;
+  at: string;
+  method: "turn/resume";
+  resumeId: string;
+  promptChars: number;
+  promptHash: string;
+  promptOmitted: true;
+  source: "output";
+}
+
+export interface ResumeTraceConfirmation {
+  taskId: string;
+  resumeId: string;
+  found: boolean;
+  accepted: boolean;
+  deliveryState: ResumeDeliveryState;
+  trace: ResumeTraceMatch | null;
+  matches: ResumeTraceMatch[];
+  duplicateSuppressionKey: string;
+}
+
+export interface ResumeDuplicateDecision {
+  duplicate: boolean;
+  conflict: boolean;
+  confirmation: ResumeTraceConfirmation;
+  existingPromptHash: string | null;
+  requestedPromptHash: string;
+}
+
+export function normalizeResumeId(value: unknown): string | null {
+  if (typeof value !== "string") return null;
+  const text = value.trim();
+  if (!resumeIdPattern.test(text)) return null;
+  return text;
+}
+
+export function resumePromptHash(prompt: string): string {
+  return createHash("sha256").update(prompt, "utf8").digest("hex");
+}
+
+export function createResumeId(taskId: string, prompt: string): string {
+  const hash = createHash("sha256")
+    .update("unidesk-code-queue-resume:v1", "utf8")
+    .update("\0", "utf8")
+    .update(taskId, "utf8")
+    .update("\0", "utf8")
+    .update(prompt, "utf8")
+    .digest("hex")
+    .slice(0, 24);
+  return `resume_${hash}`;
+}
+
+export function resumeTraceText(resumeId: string, prompt: string): string {
+  return `\n[resume id=${resumeId} chars=${prompt.length} sha256=${resumePromptHash(prompt)}] ${prompt}\n`;
+}
+
+export function normalizeResumePromptText(text: string): string {
+  return text.replace(/^\s*\[resume(?:\s+[^\]]*)?\]\s*/u, "").trimEnd();
+}
+
+function resumeTraceMeta(text: string): { promptChars: number | null; promptHash: string | null } {
+  const match = text.match(/^\s*\[resume(?:\s+[^\]]*)?\]\s*/u);
+  if (match === null) return { promptChars: null, promptHash: null };
+  const header = match[0];
+  const charsMatch = header.match(/\schars=(\d+)(?=\s|\])/u);
+  const hashMatch = header.match(/\ssha256=([a-f0-9]{64})(?=\s|\])/u);
+  return {
+    promptChars: charsMatch === null ? null : Number(charsMatch[1]),
+    promptHash: hashMatch?.[1] ?? null,
+  };
+}
+
+function outputMatch(item: LiveOutput, resumeId: string): ResumeTraceMatch | null {
+  if (item.channel !== "user" || item.method !== "turn/resume" || normalizeResumeId(item.itemId) !== resumeId) return null;
+  const prompt = normalizeResumePromptText(item.text);
+  const meta = resumeTraceMeta(item.text);
+  return {
+    seq: item.seq,
+    at: item.at,
+    method: "turn/resume",
+    resumeId,
+    promptChars: meta.promptChars ?? prompt.length,
+    promptHash: meta.promptHash ?? resumePromptHash(prompt),
+    promptOmitted: true,
+    source: "output",
+  };
+}
+
+export function findResumeTraceConfirmation(task: QueueTask, resumeId: string, output: LiveOutput[] = task.output): ResumeTraceConfirmation {
+  const matches = output
+    .map((item) => outputMatch(item, resumeId))
+    .filter((item): item is ResumeTraceMatch => item !== null)
+    .sort((left, right) => left.seq - right.seq);
+  const trace = matches[0] ?? null;
+  return {
+    taskId: task.id,
+    resumeId,
+    found: trace !== null,
+    accepted: trace !== null,
+    deliveryState: trace !== null ? "queued_for_existing_thread" : "unknown",
+    trace,
+    matches,
+    duplicateSuppressionKey: resumeId,
+  };
+}
+
+export function resumeDuplicateDecision(task: QueueTask, resumeId: string, prompt: string, output: LiveOutput[] = task.output): ResumeDuplicateDecision {
+  const confirmation = findResumeTraceConfirmation(task, resumeId, output);
+  const requestedPromptHash = resumePromptHash(prompt);
+  const existingPromptHash = confirmation.trace?.promptHash ?? null;
+  return {
+    duplicate: confirmation.found && existingPromptHash === requestedPromptHash,
+    conflict: confirmation.found && existingPromptHash !== requestedPromptHash,
+    confirmation,
+    existingPromptHash,
+    requestedPromptHash,
+  };
+}
+
+export function resumeTraceConfirmationJson(confirmation: ResumeTraceConfirmation): JsonValue {
+  return {
+    taskId: confirmation.taskId,
+    resumeId: confirmation.resumeId,
+    found: confirmation.found,
+    accepted: confirmation.accepted,
+    deliveryState: confirmation.deliveryState,
+    trace: confirmation.trace as unknown as JsonValue,
+    matchCount: confirmation.matches.length,
+    matches: confirmation.matches.slice(0, 5) as unknown as JsonValue,
+    matchesTruncated: confirmation.matches.length > 5,
+    duplicateSuppressionKey: confirmation.duplicateSuppressionKey,
+    promptOmitted: true,
+  };
+}
diff --git a/src/components/microservices/code-queue/src/task-view.ts b/src/components/microservices/code-queue/src/task-view.ts
index d04e82be..3af5e988 100644
--- a/src/components/microservices/code-queue/src/task-view.ts
+++ b/src/components/microservices/code-queue/src/task-view.ts
@@ -1157,6 +1157,7 @@ function buildTaskTranscript(task: QueueTask, limit = 180, rawOutputWindow = 0,
   for (const item of outputItems) {
     if (initialPrompt !== null && item.channel === "user" && item.method === "enqueue") continue;
     if (item.channel === "user" && item.method === "turn/steer" && promptHistorySeqs.has(item.seq)) continue;
+    if (item.channel === "user" && item.method === "turn/resume") continue;
     if (isOpenCodeStepBoundaryMethod(item.method)) continue;
     if (item.channel === "command" && item.method === "item/started") {
       flushMessage();