fix: expose apply-patch timing summary

docs/reference/cli.md

@@ -34,6 +34,7 @@ CI/CD、GitOps、rollout、artifact 发布、PR 合并后的 DEV/PROD 滚动、P
 - `provider attach <providerId> [--master-server URL] [--up] [--force]` 在新计算节点生成两项配置的 provider-gateway 挂载包：`.state/provider-<ID>.env` 默认只包含 `UNIDESK_MASTER_SERVER` 与 `PROVIDER_ID`，`provider-<ID>.yml` 固定 Docker socket、`pid: "host"`、`restart: always`、只读 `/workspace` 和 SSH 维护私钥挂载；`--up` 会立即执行生成的 `docker compose up -d --build`。`provider triage <providerId> [--observed-error text] [--observed-scope scope] [--microservice id ...] [--full|--raw]` 是只读多信号健康裁决入口，会把单路径 `provider is not online`、SSH 超时、registry 失败和 service proxy 失败归类成 `runner-local-observation-gap`、`service-degraded`、`provider-degraded` 或 `global-blocker`。默认输出只返回裁决、scope、失败/降级/未知信号和有界 evidence 摘要，完整 evidence 必须显式加 `--full` 或 `--raw`；推荐交叉验证命令仍包含 `debug health`、`debug dispatch <providerId> host.ssh --wait-ms 15000`、`trans <providerId> argv true`、`artifact-registry health --provider-id <providerId>`、`microservice health k3sctl-adapter`、`microservice health code-queue` 和 `codex tasks --view supervisor --limit 20`。
 - `trans <route> [operation args...]` / `tran <route> [operation args...]` 通过 backend-core 内网 WebSocket broker 和 provider-gateway 的 Host SSH / WSL SSH 维护桥连接目标节点；`route` 基础形态是 provider id，例如 `D601` 或 `G14`，也可以扩展为纯定位路径 `provider:plane[:namespace:resource[:container]]`，例如 `D601:win`、`D601:win/c/test`、`G14:k3s`、`D601:k3s` 或 `G14:k3s:<namespace>:<workload>`。WSL provider 的 Windows plane 固定使用 `win`，不得使用 `win32`；Windows operation 必须显式区分：`ps` 执行 Windows PowerShell heredoc 或一行 PowerShell 命令，`cmd` 执行 cmd.exe/batch，`skills` 发现 Windows skill 目录。需要 Windows cwd 时用 `trans D601:win/c/test ps` 或 `trans D601:win/c/test cmd cd`，CLI 自动设置 UTF-8/Python 编码默认值；`cmd` 额外设置 `chcp 65001`。非交互远端命令优先使用 `trans <providerId> argv ...`；需要 POSIX shell 脚本、管道、变量或循环时优先使用 quoted heredoc 单步传输，例如 `trans G14 script <<'SCRIPT'`、`trans G14:k3s script <<'SCRIPT'` 或 `trans G14:k3s:<namespace>:<workload> script <<'SCRIPT'`，把脚本走 stdin。`script` 只表示 host/k3s POSIX shell，不表示 Windows PowerShell；Windows PowerShell 必须写 `trans <provider>:win ps <<'PS'`。`script -- '<单个字符串>'` 是无需 stdin 的远端 POSIX shell one-liner，例如 `trans G14:/root/hwlab script -- 'cd /root/hwlab && git status --short --branch'`；`script -- <多个 argv>` 才是 direct argv，适合 `trans D601:/path script -- sed -n '1,20p' file` 这类带短横线的单进程命令。顶层 remote option parser 必须保留命令已经开始后的 `--`，不得把它吞成全局选项结束符。需要远端改文本文件时默认优先使用 `<route> apply-patch < patch.diff`；需要可靠传输非文本或整文件时使用 `<route> upload <local-file> <remote-file>` 和 `<route> download <remote-file> <local-file>`，CLI 会按字节数与 SHA-256 自动校验并在 provider-gateway stdin/argv 限制下切换客户端分块策略；需要旧 helper 时显式使用 `<provider>:k3s:<namespace>:<workload> apply-patch-v1` 或 `<providerId> apply-patch-v1`。ssh-like 命令遇到 timeout/kex/255 类失败时，CLI 会在 stderr 追加一行 `UNIDESK_SSH_HINT` JSON，提示 stdin script/argv 重试和 provider triage 交叉验证。
 - `trans <route> apply-patch < patch.diff` 是默认推荐的远端 patch 入口：本地 TypeScript line-based engine 解析和计算新文件内容，远端 route 只负责读写文件；支持 host workspace、k3s pod workspace、Windows workspace route（例如 `D601:win/c/test`）和 frontend transport，并优先处理长中文/Unicode、低上下文插入、重复块 `@@` 定位等旧 helper 容易失败的场景。`apply-patch` 输出按 Codex 标准文本口径，不套 UniDesk JSON 限制：成功 stdout 为 `Success. Updated the following files:`，失败 stdout 为空、stderr 写失败原因；多文件补丁中途失败时，stderr 只列出第一个失败前已成功执行的 hunk 和失败 hunk，随后按 Codex 语义停止，不继续尝试后续 hunk。v2 兼容常见 MiniMax/MXCX 非标准补丁输入，例如重复 nested `*** Begin Patch` / `*** End Patch` envelope、unified-diff hunk header、Add/Delete 误加 `@@`、Update context 漏掉前导空格，并在 stderr 给出 canonical 写法 hint；parser 或上下文失败时仍坚持唯一 v2 引擎，只提示修正 patch 文本或 hunk context，不自动重试或切换到 `apply-patch-v1`；大块/函数替换因上下文过期失败时，正确动作是重新读取当前目标块、缩小或拆分 Update File hunk 后继续用 `apply-patch`，不得改走 `download`/`upload`、远端 Python/Perl/sed heredoc 或整文件重写。Windows route 复用同一套 v2 核心算法，只把底层读写替换成 PowerShell 文件系统接口；`trans <providerId> apply-patch-v1 [tool args...] < patch.diff` 保留为显式 legacy 入口，直接调用远端注入的 `apply_patch` sh/perl helper；默认 `apply-patch` 不把 v1 当 fallback。
+- `apply-patch` v2 每次结束都会在 stderr 追加一行 `UNIDESK_APPLY_PATCH_TIMING {json}`，字段包含 `durationMs`、`patchBytes`、`fileCount`、`hunkCount`、`changedCount`、`remoteOperationCount`、`remoteOperationCounts`、`remoteElapsedMs`、`remoteFailureCount`、`providerId`、`route` 和 `transport`（可得时）。这条 timing 摘要只用于定位慢在 patch 解析、远端 stat/read/write、provider session 还是传输层，不能替代 Codex 标准 stdout/stderr 成功失败文本，也不是门禁或自动判断。
 - `trans <providerId> py [script-args...] < script.py` 把本地 stdin 落到远端临时 `.py` 文件后再以 `python3 -u` 执行并自动清理，避免再手写 `'python3 -'`、heredoc 或多层引号；`script-args` 会按 argv 安全透传给远端脚本。
 - `trans <providerId> skills [--scope all|wsl|windows] [--limit N]` 发现目标节点上的 WSL/Linux skill 根目录；当 provider 是 WSL 时同一次调用还会扫描 Windows 用户目录下的 `.agents/skills` 与 `.codex/skills`。
 - `trans <providerId>:k3s[:namespace:workload[:container]] <operation> ...` 是原生 k3s 结构化 route 入口，route 只定位控制面或 workload，`kubectl`、`logs`、`exec`、`script`、`apply-patch`、旧 `apply-patch-v1` fallback 和普通容器命令作为 operation 放在 route 之后；CLI 固定注入 `KUBECONFIG=/etc/rancher/k3s/k3s.yaml` 并把 kubectl、workload exec、logs 和 pod workspace 读写参数组装成 argv，避免在 Host SSH、bash、kubectl exec 和容器 shell 之间反复手写多层引号；D601 与 G14 都有 provider-specific guard，分别校验 `d601` 和 G14 k3s 节点身份。

scripts/src/apply-patch-v2.ts

@@ -50,6 +50,7 @@ export interface ApplyPatchV2Options {
   stdout: Writable;
   stderr?: Writable;
   argv?: string[];
+  timing?: ApplyPatchV2TimingOptions;
 }
 
 export interface ApplyPatchV2Executor {
@@ -75,6 +76,35 @@ export interface ApplyPatchV2RemoteResult {
   stderr: string;
 }
 
+export interface ApplyPatchV2TimingOptions {
+  providerId?: string;
+  route?: string;
+  transport?: "backend-core-broker" | "frontend-websocket" | "local" | "virtual";
+  thresholdMs?: number;
+}
+
+export interface ApplyPatchV2TimingSummary {
+  code: "apply-patch-v2-timing";
+  level: "info" | "warning";
+  status: "succeeded" | "failed";
+  providerId?: string;
+  route?: string;
+  transport?: ApplyPatchV2TimingOptions["transport"];
+  durationMs: number;
+  thresholdMs: number;
+  slow: boolean;
+  patchBytes: number;
+  fileCount: number;
+  hunkCount: number;
+  changedCount: number;
+  remoteOperationCount: number;
+  remoteOperationCounts: Record<string, number>;
+  remoteElapsedMs: number;
+  remoteFailureCount: number;
+  message: string;
+  note: string;
+}
+
 export class ApplyPatchV2Error extends Error {
   constructor(message: string, public readonly details: Record<string, unknown> = {}) {
     super(message);
@@ -91,6 +121,13 @@ interface ApplyPatchV2Plan {
   outcomes: ApplyPatchV2Outcome[];
 }
 
+export interface ApplyPatchV2RemoteMetrics {
+  remoteOperationCount: number;
+  remoteOperationCounts: Record<string, number>;
+  remoteElapsedMs: number;
+  remoteFailureCount: number;
+}
+
 const beginMarker = "*** Begin Patch";
 const endMarker = "*** End Patch";
 const environmentIdMarker = "*** Environment ID: ";
@@ -101,6 +138,7 @@ const moveToMarker = "*** Move to: ";
 const emptyChangeContextMarker = "@@";
 const changeContextMarker = "@@ ";
 const eofMarker = "*** End of File";
+const defaultApplyPatchV2SlowWarningMs = 10_000;
 
 export function isApplyPatchV2HelpArgs(args: string[] = []): boolean {
   const first = args[0] ?? "";
@@ -121,6 +159,24 @@ export function applyPatchV2HelpPayload() {
       firstLine: beginMarker,
       lastLine: endMarker
     },
+    timing: {
+      stderrPrefix: "UNIDESK_APPLY_PATCH_TIMING",
+      fields: [
+        "durationMs",
+        "patchBytes",
+        "fileCount",
+        "hunkCount",
+        "changedCount",
+        "remoteOperationCount",
+        "remoteOperationCounts",
+        "remoteElapsedMs",
+        "remoteFailureCount",
+        "providerId",
+        "route",
+        "transport"
+      ],
+      stdoutCompatibility: "Timing is written to stderr so success stdout remains Codex apply_patch-compatible."
+    },
     rules: [
       "Add File has no @@ hunk marker: put content immediately after `*** Add File: <path>` and prefix every content line with +.",
       "A blank line in Add File is a line containing only +.",
@@ -302,20 +358,162 @@ export async function runApplyPatchV2(options: ApplyPatchV2Options): Promise<num
     stderr.write("ssh apply-patch requires patch text on stdin.\n");
     return 2;
   }
+  const startedAtMs = Date.now();
+  const metrics = createApplyPatchV2RemoteMetrics();
+  const executor = instrumentApplyPatchV2Executor(options.executor, metrics);
+  let parsed: PatchParseResult | null = null;
+  let plan: ApplyPatchV2Plan | null = null;
   try {
-    const parsed = parseApplyPatchV2(patchText);
-    const plan = await applyPatchV2Hunks(options.executor, parsed.hunks);
+    parsed = parseApplyPatchV2(patchText);
+    plan = await applyPatchV2Hunks(executor, parsed.hunks);
     for (const hint of parsed.hints) stderr.write(`${hint}\n`);
     options.stdout.write("Success. Updated the following files:\n");
     for (const item of plan.changed) options.stdout.write(`${item}\n`);
+    stderr.write(formatApplyPatchV2TimingSummary(applyPatchV2TimingSummary({
+      status: "succeeded",
+      patchText,
+      parsed,
+      plan,
+      metrics,
+      startedAtMs,
+      options: options.timing,
+    })));
     return 0;
   } catch (error) {
+    const failureSummary = applyPatchV2TimingSummary({
+      status: "failed",
+      patchText,
+      parsed,
+      plan,
+      metrics,
+      startedAtMs,
+      options: options.timing,
+    });
     if (options.stderr === undefined) throw error;
     options.stderr.write(formatApplyPatchFailure(error));
+    options.stderr.write(formatApplyPatchV2TimingSummary(failureSummary));
     return 1;
   }
 }
 
+function createApplyPatchV2RemoteMetrics(): ApplyPatchV2RemoteMetrics {
+  return { remoteOperationCount: 0, remoteOperationCounts: {}, remoteElapsedMs: 0, remoteFailureCount: 0 };
+}
+
+function instrumentApplyPatchV2Executor(executor: ApplyPatchV2Executor, metrics: ApplyPatchV2RemoteMetrics): ApplyPatchV2Executor {
+  return {
+    ...executor,
+    run: executor.run === undefined ? undefined : async (command, input) => {
+      const operation = applyPatchV2OperationName(command);
+      const started = Date.now();
+      metrics.remoteOperationCount += 1;
+      metrics.remoteOperationCounts[operation] = (metrics.remoteOperationCounts[operation] ?? 0) + 1;
+      try {
+        const result = await executor.run!(command, input);
+        metrics.remoteElapsedMs += Math.max(0, Date.now() - started);
+        if (result.exitCode !== 0) metrics.remoteFailureCount += 1;
+        return result;
+      } catch (error) {
+        metrics.remoteElapsedMs += Math.max(0, Date.now() - started);
+        metrics.remoteFailureCount += 1;
+        throw error;
+      }
+    },
+    fs: executor.fs === undefined ? undefined : instrumentApplyPatchV2FileSystem(executor.fs, metrics),
+  };
+}
+
+function instrumentApplyPatchV2FileSystem(fs: ApplyPatchV2FileSystem, metrics: ApplyPatchV2RemoteMetrics): ApplyPatchV2FileSystem {
+  return {
+    stat: (path) => recordApplyPatchV2FsOperation(metrics, "fs.stat", () => fs.stat(path)),
+    readBlock: (path, blockIndex, blockBytes) => recordApplyPatchV2FsOperation(metrics, "fs.readBlock", () => fs.readBlock(path, blockIndex, blockBytes)),
+    writeFile: (path, content) => recordApplyPatchV2FsOperation(metrics, "fs.writeFile", () => fs.writeFile(path, content)),
+    deleteFile: (path) => recordApplyPatchV2FsOperation(metrics, "fs.deleteFile", () => fs.deleteFile(path)),
+  };
+}
+
+async function recordApplyPatchV2FsOperation<T>(metrics: ApplyPatchV2RemoteMetrics, operation: string, run: () => Promise<T>): Promise<T> {
+  const started = Date.now();
+  metrics.remoteOperationCount += 1;
+  metrics.remoteOperationCounts[operation] = (metrics.remoteOperationCounts[operation] ?? 0) + 1;
+  try {
+    const result = await run();
+    metrics.remoteElapsedMs += Math.max(0, Date.now() - started);
+    return result;
+  } catch (error) {
+    metrics.remoteElapsedMs += Math.max(0, Date.now() - started);
+    metrics.remoteFailureCount += 1;
+    throw error;
+  }
+}
+
+function applyPatchV2OperationName(command: string[]): string {
+  const index = command.indexOf("unidesk-apply-patch-v2");
+  return index >= 0 ? command[index + 1] ?? "unknown" : command[0] ?? "unknown";
+}
+
+export function applyPatchV2TimingSummary(options: {
+  status: ApplyPatchV2TimingSummary["status"];
+  patchText: string;
+  parsed: PatchParseResult | null;
+  plan: ApplyPatchV2Plan | null;
+  metrics: ApplyPatchV2RemoteMetrics;
+  startedAtMs: number;
+  finishedAtMs?: number;
+  options?: ApplyPatchV2TimingOptions;
+}): ApplyPatchV2TimingSummary {
+  const finishedAtMs = options.finishedAtMs ?? Date.now();
+  const durationMs = Math.max(0, Math.round(finishedAtMs - options.startedAtMs));
+  const thresholdMs = options.options?.thresholdMs ?? defaultApplyPatchV2SlowWarningMs;
+  const slow = durationMs > thresholdMs;
+  const patchBytes = Buffer.byteLength(options.patchText, "utf8");
+  const fileCount = countApplyPatchV2Files(options.parsed?.hunks ?? []);
+  const hunkCount = options.parsed?.hunks.length ?? 0;
+  const changedCount = options.plan?.changed.length ?? applyPatchV2ChangedCountFromOutcomes(options.plan?.outcomes ?? []);
+  const durationSeconds = Number((durationMs / 1000).toFixed(3));
+  const thresholdSeconds = Number((thresholdMs / 1000).toFixed(3));
+  return {
+    code: "apply-patch-v2-timing",
+    level: slow ? "warning" : "info",
+    status: options.status,
+    ...(options.options?.providerId === undefined ? {} : { providerId: options.options.providerId }),
+    ...(options.options?.route === undefined ? {} : { route: options.options.route }),
+    ...(options.options?.transport === undefined ? {} : { transport: options.options.transport }),
+    durationMs,
+    thresholdMs,
+    slow,
+    patchBytes,
+    fileCount,
+    hunkCount,
+    changedCount,
+    remoteOperationCount: options.metrics.remoteOperationCount,
+    remoteOperationCounts: options.metrics.remoteOperationCounts,
+    remoteElapsedMs: Math.max(0, Math.round(options.metrics.remoteElapsedMs)),
+    remoteFailureCount: options.metrics.remoteFailureCount,
+    message: slow
+      ? `apply-patch completed in ${durationSeconds}s, above the ${thresholdSeconds}s warning threshold; inspect remoteOperationCounts and remoteElapsedMs before repeating high-frequency patch work.`
+      : `apply-patch completed in ${durationSeconds}s.`,
+    note: "Timing summary is written to stderr so stdout remains Codex apply_patch-compatible.",
+  };
+}
+
+export function formatApplyPatchV2TimingSummary(summary: ApplyPatchV2TimingSummary): string {
+  return `UNIDESK_APPLY_PATCH_TIMING ${JSON.stringify(summary)}\n`;
+}
+
+function countApplyPatchV2Files(hunks: PatchHunk[]): number {
+  const files = new Set<string>();
+  for (const hunk of hunks) {
+    files.add(hunk.path);
+    if (hunk.kind === "update" && hunk.movePath !== null) files.add(hunk.movePath);
+  }
+  return files.size;
+}
+
+function applyPatchV2ChangedCountFromOutcomes(outcomes: ApplyPatchV2Outcome[]): number {
+  return outcomes.filter((outcome) => outcome.status === "applied").length;
+}
+
 async function applyPatchV2Hunks(executor: ApplyPatchV2Executor, hunks: PatchHunk[]): Promise<ApplyPatchV2Plan> {
   if (hunks.length === 0) throw new ApplyPatchV2Error("No files were modified.");
 

scripts/src/help.ts

@@ -202,7 +202,7 @@ export function sshHelp(): unknown {
       "When a one-line shell command is easier to type through the script path, `script -- '<command && command>'` runs that single string through the remote shell without waiting for stdin. When `script --` is followed by multiple tokens, it stays a direct argv form for commands such as `trans D601:/work script -- sed -n '1,20p' file`.",
       "script and shell helper modes inject a tiny POSIX-compatible printf wrapper before user shell text, so portable printf headings such as `printf \"--- section ---\\n\"` work consistently under dash/sh and bash. Direct argv commands are unchanged.",
       "For arbitrary stdin streams into a workload command, use a workload route plus `exec --stdin -- <command> ...`; this keeps the route as location-only and avoids heredoc/base64/tar shell wrapping.",
-      "`apply-patch` is the default remote text patch entry and uses the v2 local line-based patch engine with remote read/write operations, including Windows routes such as `D601:win/c/test`, so long Unicode/Chinese lines and pure insertion hunks avoid the legacy remote shell hunk parser. Its stdout/stderr follows Codex apply_patch text output rather than UniDesk JSON output; on multi-file failure, stderr lists applied hunks before the first failed hunk and the failed hunk, then stops like Codex apply_patch.",
+      "`apply-patch` is the default remote text patch entry and uses the v2 local line-based patch engine with remote read/write operations, including Windows routes such as `D601:win/c/test`, so long Unicode/Chinese lines and pure insertion hunks avoid the legacy remote shell hunk parser. Its stdout follows Codex apply_patch text output rather than UniDesk JSON output; stderr keeps Codex-style failure text and appends one `UNIDESK_APPLY_PATCH_TIMING` JSON summary with durationMs, patchBytes, fileCount, hunkCount, changedCount, remoteOperationCount, remoteOperationCounts and remoteElapsedMs so slow patch runs can be attributed without changing success stdout.",
       "`upload` and `download` are the default whole-file transfer entries for non-text and generated files. They write through remote temp files, verify byte count and SHA-256 on both sides, and return `verification.automatic=true`, `verification.verified=true`, and `verification.match.{bytes,sha256}=true`; this JSON is the transfer integrity proof, so callers do not need a separate manual `sha256sum` check. The client falls back from a single stdin payload to bounded chunks before treating provider-gateway limits as a server-side problem.",
       "`apply-patch-v1` is the only legacy fallback entry: it rejects low-context update hunks by default, reports the matched file:line for each hunk on stderr, and only accepts --allow-loose when the caller has manually reviewed an intentionally ambiguous insertion.",
       "script defaults to target /bin/sh and inherits provider proxy variables such as HTTP_PROXY/HTTPS_PROXY/ALL_PROXY/NO_PROXY; it is for host/k3s POSIX shell only. Use --shell bash only for bash syntax such as pipefail, arrays, or [[ ... ]], not as a proxy workaround.",

scripts/src/remote.ts

@@ -1294,7 +1294,18 @@ async function runRemoteSshOverFrontend(session: FrontendSession, target: string
     const executor: ApplyPatchV2Executor = {
       run: (command, input) => runRemoteSshWebSocketCapture(session, invocation, command, input),
     };
-    return await runApplyPatchV2({ executor, stdin: process.stdin, stdout: process.stdout, stderr: process.stderr, argv: normalizedArgs.slice(1) });
+    return await runApplyPatchV2({
+      executor,
+      stdin: process.stdin,
+      stdout: process.stdout,
+      stderr: process.stderr,
+      argv: normalizedArgs.slice(1),
+      timing: {
+        providerId: invocation.providerId,
+        route: invocation.route.raw,
+        transport: "frontend-websocket",
+      },
+    });
   }
   return runRemoteSshWebSocket(session, invocation);
 }

scripts/src/ssh.ts

@@ -2655,6 +2655,11 @@ export async function runSsh(config: UniDeskConfig, providerId: string, args: st
       stdout: process.stdout,
       stderr: process.stderr,
       argv: normalizedArgs.slice(1),
+      timing: {
+        providerId: invocation.providerId,
+        route: invocation.route.raw,
+        transport: "backend-core-broker",
+      },
     });
   }
   const startedAtMs = Date.now();

scripts/ssh-argv-guidance-contract-test.ts

@@ -5,7 +5,7 @@ import { chmodSync, existsSync, mkdirSync, mkdtempSync, readFileSync, rmSync, wr
 import os from "node:os";
 import path from "node:path";
 import { sshHelp } from "./src/help";
-import { runApplyPatchV2 } from "./src/apply-patch-v2";
+import { runApplyPatchV2, type ApplyPatchV2TimingSummary } from "./src/apply-patch-v2";
 import { providerTriageRecommendedCrossChecks } from "./src/provider-triage";
 import { extractRemoteCliOptions, remoteSshFrontendPlanForTest } from "./src/remote";
 import { runSshFileTransferOperation, type SshFileTransferCommandBuilders, type SshRemoteCommandExecutor } from "./src/ssh-file-transfer";
@@ -227,6 +227,12 @@ async function applyPatchV2FixtureAttempt(patch: string, files: Record<string, s
   return { stdout, stderr, exitCode, files: Object.fromEntries(state), commands, error };
 }
 
+function applyPatchTimingFromStderr(stderr: string): ApplyPatchV2TimingSummary {
+  const line = stderr.split(/\r?\n/u).find((item) => item.startsWith("UNIDESK_APPLY_PATCH_TIMING "));
+  assertCondition(line !== undefined, "apply-patch stderr must include UNIDESK_APPLY_PATCH_TIMING", stderr);
+  return JSON.parse(line!.slice("UNIDESK_APPLY_PATCH_TIMING ".length)) as ApplyPatchV2TimingSummary;
+}
+
 async function applyPatchV2ActualShellFixtureAttempt(
   patch: string,
   files: Record<string, string>,
@@ -787,6 +793,13 @@ export async function runSshArgvGuidanceContract(): Promise<JsonRecord> {
   });
   assertCondition(unifiedHeaderLineRangeV2.stderr.includes("accepted unified-diff hunk header in repeated-large.txt"), "v2 unified header compatibility should emit a canonical syntax hint", unifiedHeaderLineRangeV2.stderr);
 
+  const unifiedTiming = applyPatchTimingFromStderr(unifiedHeaderLineRangeV2.stderr);
+  assertCondition(unifiedTiming.code === "apply-patch-v2-timing" && unifiedTiming.status === "succeeded", "v2 apply-patch timing summary should identify successful runs", unifiedTiming);
+  assertCondition(unifiedTiming.patchBytes > 0 && unifiedTiming.fileCount === 1 && unifiedTiming.hunkCount === 1 && unifiedTiming.changedCount === 1, "v2 timing summary should expose patch/file/hunk/change counts", unifiedTiming);
+  assertCondition(unifiedTiming.remoteOperationCount === unifiedHeaderLineRangeV2.commands.length, "v2 timing summary should count remote operations", { unifiedTiming, commands: unifiedHeaderLineRangeV2.commands });
+  assertCondition((unifiedTiming.remoteOperationCounts.stat ?? 0) >= 1 && (unifiedTiming.remoteOperationCounts["read-b64-block"] ?? 0) >= 1 && Object.keys(unifiedTiming.remoteOperationCounts).some((key) => key.startsWith("write-b64")), "v2 timing summary should classify stat/read/write operations", unifiedTiming);
+  assertCondition(unifiedHeaderLineRangeV2.stdout.startsWith("Success. Updated the following files:"), "v2 timing summary must not change Codex-compatible success stdout", unifiedHeaderLineRangeV2.stdout);
+
   const unprefixedUpdateContextV2 = await applyPatchV2FixtureAttempt([
     "*** Begin Patch",
     "*** Update File: internal/cloud/access-control.ts",
@@ -1553,6 +1566,7 @@ export async function runSshArgvGuidanceContract(): Promise<JsonRecord> {
   assertCondition(helpText.includes("UNIDESK_SSH_HINT"), "ssh help must document structured failure hint", helpText);
   assertCondition(helpText.includes("UNIDESK_SSH_RUNTIME_TIMEOUT") && helpText.includes("UNIDESK_TRAN_TIMEOUT_HINT") && helpText.includes("60s") && helpText.includes("submit-and-poll"), "ssh help must document top-level runtime timeout and short polling discipline", helpText);
   assertCondition(helpText.includes("UNIDESK_SSH_TIMING") && helpText.includes("10s") && helpText.includes("slow successful calls are a distributed performance monitoring signal") && helpText.includes("Routine short calls do not emit timing noise"), "ssh help must document slow-only runtime timing hints", helpText);
+  assertCondition(helpText.includes("UNIDESK_APPLY_PATCH_TIMING") && helpText.includes("remoteOperationCounts") && helpText.includes("durationMs"), "ssh help must document apply-patch aggregate timing summary", helpText);
   assertCondition(helpText.includes("must not add provider/plane directory locks") && helpText.includes("k8s/Tekton/Argo/Lease"), "ssh help must document tran's no-local-lock boundary", helpText);
 
   const crossChecks = providerTriageRecommendedCrossChecks("D601");