diff --git a/.github/workflows/process-metrics.yml b/.github/workflows/process-metrics.yml
new file mode 100644
index 00000000..dfbdc10c
--- /dev/null
+++ b/.github/workflows/process-metrics.yml
@@ -0,0 +1,60 @@
+name: Метрики процесса
+
+# #637: еженедельный замер вместо ощущений — lead time S→S7→S8, раунды ревью,
+# прогоны Validate по исходам, минуты конвейера в S4/S7. Только чтение: отчёт
+# идёт в step summary и артефакт; в issue и репозиторий ничего не пишется.
+# Цифры аудита 22.09 (1,57 раунда код-ревью, S7 ≈ 36 мин/раунд, 226 Validate
+# за неделю) были собраны руками за час — теперь они стоят один запуск.
+
+on:
+  schedule:
+    # Понедельник 05:00 UTC — после ночных прогонов, до рабочего дня.
+    - cron: '0 5 * * 1'
+  workflow_dispatch:
+    inputs:
+      days:
+        description: "Окно в днях"
+        required: false
+        default: "7"
+        type: string
+
+permissions:
+  contents: read
+  actions: read
+  issues: read
+
+jobs:
+  metrics:
+    name: "Снимок недели: issue, раунды, прогоны"
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+    steps:
+      # Код — из dev, как у reconcile: расписание читается из main, а исполняется
+      # версия, которую проверил CI.
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7
+        with:
+          ref: dev
+          fetch-depth: 1
+          persist-credentials: false
+      - uses: actions/setup-node@820762786026740c76f36085b0efc47a31fe5020 # v7
+        with:
+          node-version: 22
+      - name: Собрать отчёт
+        env:
+          GH_TOKEN: ${{ secrets.HP_PROCESS_TOKEN }}
+          REPO: ${{ github.repository }}
+          DAYS: ${{ inputs.days || '7' }}
+        run: |
+          mkdir -p artifacts/process-metrics
+          node scripts/process-metrics.mjs --repo="$REPO" --days="$DAYS" \
+            --output=artifacts/process-metrics/report.md \
+            --json=artifacts/process-metrics/report.json > /dev/null
+          cat artifacts/process-metrics/report.md >> "$GITHUB_STEP_SUMMARY"
+      - name: Сохранить отчёт
+        if: always()
+        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4
+        with:
+          name: process-metrics-${{ github.run_id }}
+          path: artifacts/process-metrics
+          if-no-files-found: error
+          retention-days: 90
diff --git a/scripts/mutation-registry.mjs b/scripts/mutation-registry.mjs
index 0cea5a46..6812f806 100644
--- a/scripts/mutation-registry.mjs
+++ b/scripts/mutation-registry.mjs
@@ -8532,6 +8532,30 @@ const MUTANT_DEFINITIONS = [
       replace: "    if (false && run.pendingValidate === 'active') {",
     }],
   },
+  // #637: метрики процесса — цифры, по которым судят об ускорении; ошибка счёта
+  // хуже отсутствия счёта.
+  {
+    id: 'metrics-count-skipped-pipeline-runs',
+    guard: 'node --test --test-name-pattern="#637 pipelineMetrics" test/process-metrics.test.mjs',
+    because: 'process.yml runs on every label event and most runs are skipped by the guard; counting '
+      + 'them as review rounds would inflate S7 minutes and per-run averages (#637)',
+    patches: [{
+      file: 'scripts/process-metrics.mjs',
+      find: "    if (!match || run.conclusion === 'skipped') continue;",
+      replace: "    if (!match) continue; // mutant: skipped runs counted",
+    }],
+  },
+  {
+    id: 'metrics-rounds-by-s7-events',
+    guard: 'node --test --test-name-pattern="#637 buildReport" test/process-metrics.test.mjs',
+    because: 'review rounds come from review documents, not from S7 label events — the pipeline '
+      + 're-applies S7 itself after a pending Validate (#636), so events would overcount (#637)',
+    patches: [{
+      file: 'scripts/process-metrics.mjs',
+      find: "  const codeRounds = completed.map((issue) => rounds.get(`CODE:${issue.number}`)).filter(Boolean);",
+      replace: "  const codeRounds = completed.map((issue) => issue.s7Requests).filter(Boolean); // mutant: rounds = S7 events",
+    }],
+  },
   {
     id: 'process-reconcile-restarts-healthy-run',
     guard: 'node --test test/process-reconcile.test.mjs',
diff --git a/scripts/process-metrics.mjs b/scripts/process-metrics.mjs
new file mode 100644
index 00000000..f22c560d
--- /dev/null
+++ b/scripts/process-metrics.mjs
@@ -0,0 +1,291 @@
+#!/usr/bin/env node
+// #637: еженедельный замер процесса одним скриптом.
+//
+// Аудит 22.09 собирал эти цифры руками через API за час: раунды ревью на
+// issue, время S→S7→S8, прогоны Validate по исходам, минуты конвейера в S7,
+// доля мутантов. Без регулярного замера решения об ускорении (#620, #636)
+// нельзя проверить. Здесь — чистые функции над снимками GitHub (issue с
+// таймлайном меток, прогоны Actions, имена документов ревью) и тонкий CLI на
+// `gh`. Скрипт ничего не пишет в репозиторий и в issue: результат — Markdown в
+// stdout/файл; куда его класть, решает workflow (`process-metrics.yml`:
+// step summary + artifact, опционально комментарий в issue-журнал).
+//
+//   node scripts/process-metrics.mjs --repo=<owner/repo> --days=7 [--until=ISO] [--output=path.md] [--json=path.json]
+import { execFileSync } from 'node:child_process';
+import { mkdirSync, writeFileSync } from 'node:fs';
+import { dirname } from 'node:path';
+import { isMainModule } from './spawn-portable.mjs';
+
+export const STATUS_LABELS = ['S1-new', 'S2-analysis', 'S3-spec', 'S4-spec-review', 'S5-ready', 'S6-in-progress', 'S7-code-review', 'S8-merged'];
+const PROCESS_RUN = /^process #(\d+) · (S4-spec-review|S7-code-review)(?: ·|$)/;
+const REVIEW_DOC = /^(CODE|SPEC)-REVIEW-(\d+)-r(\d+)\.md$/;
+
+const at = (value) => {
+  const parsed = Date.parse(String(value || ''));
+  return Number.isFinite(parsed) ? parsed : NaN;
+};
+const minutes = (ms) => Math.round(ms / 60_000);
+const hours = (ms) => Math.round((ms / 3_600_000) * 10) / 10;
+const median = (values) => {
+  const sorted = values.filter(Number.isFinite).sort((a, b) => a - b);
+  if (!sorted.length) return null;
+  const mid = Math.floor(sorted.length / 2);
+  return sorted.length % 2 ? sorted[mid] : (sorted[mid - 1] + sorted[mid]) / 2;
+};
+const mean = (values) => {
+  const finite = values.filter(Number.isFinite);
+  return finite.length ? finite.reduce((a, b) => a + b, 0) / finite.length : null;
+};
+
+/**
+ * Метрики одного issue по таймлайну меток.
+ * @param {object} issue        { number, title, closed_at, state_reason, labels }
+ * @param {object[]} events     timeline: { event: 'labeled'|'unlabeled', label: { name }, created_at }
+ */
+export function issueMetrics(issue, events = []) {
+  const labeled = (events || [])
+    .filter((event) => event?.event === 'labeled' && event.label?.name)
+    .map((event) => ({ label: event.label.name, at: at(event.created_at) }))
+    .filter((event) => Number.isFinite(event.at))
+    .sort((a, b) => a.at - b.at);
+  const first = (label) => labeled.find((event) => event.label === label)?.at ?? null;
+  const count = (label) => labeled.filter((event) => event.label === label).length;
+  const entered = labeled.find((event) => STATUS_LABELS.includes(event.label))?.at ?? null;
+  const s7 = first('S7-code-review');
+  const s8 = first('S8-merged');
+  const s4 = first('S4-spec-review');
+  const s5 = first('S5-ready');
+  const closed = at(issue.closed_at);
+  return {
+    number: Number(issue.number),
+    title: String(issue.title || ''),
+    stateReason: issue.state_reason || null,
+    enteredAt: entered,
+    s4At: s4, s5At: s5, s7At: s7, s8At: s8,
+    closedAt: Number.isFinite(closed) ? closed : null,
+    // Повторные постановки метки: S7 конвейер ставит сам после pending (#636),
+    // поэтому число S7-событий — не число раундов; раунды считаются по документам.
+    s7Requests: count('S7-code-review'),
+    s4Requests: count('S4-spec-review'),
+    leadToS7Ms: entered != null && s7 != null ? s7 - entered : null,
+    reviewToMergeMs: s7 != null && s8 != null ? s8 - s7 : null,
+    leadToS8Ms: entered != null && s8 != null ? s8 - entered : null,
+    specLeadMs: s4 != null && s5 != null ? s5 - s4 : null,
+  };
+}
+
+/** Раунды ревью по именам документов `docs/reviews/*-REVIEW-<NN>-r<K>.md`. */
+export function reviewRounds(fileNames = []) {
+  const rounds = new Map();
+  for (const name of fileNames) {
+    const match = REVIEW_DOC.exec(String(name));
+    if (!match) continue;
+    const key = `${match[1]}:${match[2]}`;
+    const round = Number(match[3]);
+    rounds.set(key, Math.max(rounds.get(key) || 0, round));
+  }
+  return rounds;
+}
+
+/** Сводка по прогонам Actions за окно: по workflow — число, исходы, wall-time, события. */
+export function runMetrics(runs = []) {
+  const byWorkflow = new Map();
+  for (const run of runs) {
+    const name = String(run.name || run.workflow_name || '');
+    // Прогоны конвейера именуются `process #NN · <метка> · …` на каждое событие метки;
+    // для сводки они — один workflow, а не сотни строк по меткам.
+    const key = /^process #\d+ · /.test(String(run.display_title || '')) ? 'process' : name;
+    const entry = byWorkflow.get(key) || {
+      workflow: key, runs: 0, success: 0, failure: 0, cancelled: 0, skipped: 0, other: 0, wallMs: 0, events: {},
+    };
+    entry.runs += 1;
+    const conclusion = run.conclusion || 'other';
+    if (conclusion in entry && typeof entry[conclusion] === 'number') entry[conclusion] += 1; else entry.other += 1;
+    const started = at(run.run_started_at || run.created_at);
+    const ended = at(run.updated_at);
+    if (Number.isFinite(started) && Number.isFinite(ended) && ended > started) entry.wallMs += ended - started;
+    entry.events[run.event] = (entry.events[run.event] || 0) + 1;
+    byWorkflow.set(key, entry);
+  }
+  return [...byWorkflow.values()].sort((a, b) => b.wallMs - a.wallMs);
+}
+
+/** Минуты конвейера по стадиям (имя прогона `process #NN · S7-code-review · …`). */
+export function pipelineMetrics(runs = []) {
+  const stages = { 'S7-code-review': { runs: 0, wallMs: 0, issues: new Set() }, 'S4-spec-review': { runs: 0, wallMs: 0, issues: new Set() } };
+  for (const run of runs) {
+    const match = PROCESS_RUN.exec(String(run.display_title || run.name || ''));
+    if (!match || run.conclusion === 'skipped') continue;
+    const stage = stages[match[2]];
+    const started = at(run.run_started_at || run.created_at);
+    const ended = at(run.updated_at);
+    stage.runs += 1;
+    stage.issues.add(Number(match[1]));
+    if (Number.isFinite(started) && Number.isFinite(ended) && ended > started) stage.wallMs += ended - started;
+  }
+  return Object.fromEntries(Object.entries(stages).map(([label, stage]) => [label, {
+    runs: stage.runs, issues: stage.issues.size, wallMinutes: minutes(stage.wallMs),
+    perRunMinutes: stage.runs ? Math.round(minutes(stage.wallMs) / stage.runs) : null,
+  }]));
+}
+
+/** Job-минуты по jobs прогонов (если переданы): в целом и доля «Мутанты». */
+export function jobMinutes(jobsByRun = new Map()) {
+  let total = 0;
+  let mutants = 0;
+  for (const jobs of jobsByRun.values()) {
+    for (const job of jobs || []) {
+      const started = at(job.started_at);
+      const ended = at(job.completed_at);
+      if (!Number.isFinite(started) || !Number.isFinite(ended) || ended <= started) continue;
+      total += ended - started;
+      if (/^Мутанты/.test(String(job.name || ''))) mutants += ended - started;
+    }
+  }
+  return { totalMinutes: minutes(total), mutantMinutes: minutes(mutants), mutantShare: total ? Math.round((mutants / total) * 100) : null };
+}
+
+/** Собрать всё в один отчёт. */
+export function buildReport({ since, until, issues = [], timelines = new Map(), reviewFiles = [], runs = [], jobsByRun = null }) {
+  const perIssue = issues.map((issue) => issueMetrics(issue, timelines.get(Number(issue.number)) || []));
+  const rounds = reviewRounds(reviewFiles);
+  const completed = perIssue.filter((issue) => issue.stateReason === 'completed');
+  const codeRounds = completed.map((issue) => rounds.get(`CODE:${issue.number}`)).filter(Boolean);
+  const specRounds = completed.map((issue) => rounds.get(`SPEC:${issue.number}`)).filter(Boolean);
+  const dist = (values) => values.reduce((acc, value) => (acc[value] = (acc[value] || 0) + 1, acc), {});
+  return {
+    since, until,
+    issues: {
+      closed: perIssue.length,
+      completed: completed.length,
+      notPlanned: perIssue.filter((issue) => issue.stateReason === 'not_planned').length,
+      medianLeadToS7Hours: hours(median(completed.map((i) => i.leadToS7Ms)) ?? NaN) || null,
+      medianReviewToMergeHours: hours(median(completed.map((i) => i.reviewToMergeMs)) ?? NaN) || null,
+      medianLeadToS8Hours: hours(median(completed.map((i) => i.leadToS8Ms)) ?? NaN) || null,
+      medianSpecLeadHours: hours(median(completed.map((i) => i.specLeadMs)) ?? NaN) || null,
+      codeReviewRounds: { mean: mean(codeRounds), distribution: dist(codeRounds), issues: codeRounds.length },
+      specReviewRounds: { mean: mean(specRounds), distribution: dist(specRounds), issues: specRounds.length },
+      s7RepeatRequests: completed.filter((i) => i.s7Requests > 1).length,
+      rows: perIssue.map((issue) => ({
+        ...issue,
+        codeRounds: rounds.get(`CODE:${issue.number}`) || 0,
+        specRounds: rounds.get(`SPEC:${issue.number}`) || 0,
+      })),
+    },
+    runs: runMetrics(runs),
+    pipeline: pipelineMetrics(runs),
+    jobs: jobsByRun ? jobMinutes(jobsByRun) : null,
+  };
+}
+
+const fmt = (value, suffix = '') => (value == null || Number.isNaN(value) ? '—' : `${typeof value === 'number' && !Number.isInteger(value) ? value.toFixed(2) : value}${suffix}`);
+
+export function renderMarkdown(report) {
+  const lines = [];
+  lines.push(`## Метрики процесса · ${String(report.since).slice(0, 10)} — ${String(report.until).slice(0, 10)}`);
+  lines.push('');
+  const i = report.issues;
+  lines.push(`Закрыто issue: **${i.closed}** (completed ${i.completed}, not_planned ${i.notPlanned}).`);
+  lines.push('');
+  lines.push('| Метрика | Значение |');
+  lines.push('|---|---|');
+  lines.push(`| Медиана вход → S7 | ${fmt(i.medianLeadToS7Hours, ' ч')} |`);
+  lines.push(`| Медиана S7 → S8 | ${fmt(i.medianReviewToMergeHours, ' ч')} |`);
+  lines.push(`| Медиана вход → S8 | ${fmt(i.medianLeadToS8Hours, ' ч')} |`);
+  lines.push(`| Медиана S4 → S5 (ревью ТЗ) | ${fmt(i.medianSpecLeadHours, ' ч')} |`);
+  lines.push(`| Раундов код-ревью на issue | ${fmt(i.codeReviewRounds.mean)} (${Object.entries(i.codeReviewRounds.distribution).map(([r, n]) => `r${r}: ${n}`).join(', ') || '—'}) |`);
+  lines.push(`| Раундов ревью ТЗ на issue | ${fmt(i.specReviewRounds.mean)} (${Object.entries(i.specReviewRounds.distribution).map(([r, n]) => `r${r}: ${n}`).join(', ') || '—'}) |`);
+  lines.push(`| Issue с повторной S7 | ${i.s7RepeatRequests} |`);
+  lines.push('');
+  lines.push('### Прогоны Actions');
+  lines.push('');
+  lines.push('| Workflow | Прогонов | ok | red | cancel | skipped | Wall, мин |');
+  lines.push('|---|---:|---:|---:|---:|---:|---:|');
+  for (const run of report.runs) {
+    lines.push(`| ${run.workflow} | ${run.runs} | ${run.success} | ${run.failure} | ${run.cancelled} | ${run.skipped} | ${minutes(run.wallMs)} |`);
+  }
+  lines.push('');
+  const p = report.pipeline;
+  lines.push(`Конвейер: S7 — ${p['S7-code-review'].runs} прогонов по ${p['S7-code-review'].issues} issue, ${p['S7-code-review'].wallMinutes} мин (≈ ${fmt(p['S7-code-review'].perRunMinutes)} мин/прогон); S4 — ${p['S4-spec-review'].runs} прогонов, ${p['S4-spec-review'].wallMinutes} мин.`);
+  if (report.jobs) {
+    lines.push('');
+    lines.push(`Job-минуты: **${report.jobs.totalMinutes}**, из них «Мутанты» ${report.jobs.mutantMinutes} (${fmt(report.jobs.mutantShare, ' %')}).`);
+  }
+  lines.push('');
+  lines.push('<details><summary>По issue</summary>');
+  lines.push('');
+  lines.push('| # | Исход | Вход → S7, ч | S7 → S8, ч | Раунды код / ТЗ | S7 постановок |');
+  lines.push('|---|---|---:|---:|---|---:|');
+  for (const row of [...i.rows].sort((a, b) => a.number - b.number)) {
+    lines.push(`| #${row.number} | ${row.stateReason || '—'} | ${fmt(row.leadToS7Ms == null ? null : hours(row.leadToS7Ms))} | ${fmt(row.reviewToMergeMs == null ? null : hours(row.reviewToMergeMs))} | ${row.codeRounds || '—'} / ${row.specRounds || '—'} | ${row.s7Requests} |`);
+  }
+  lines.push('');
+  lines.push('</details>');
+  return `${lines.join('\n')}\n`;
+}
+
+// ---------------------------------------------------------------------------
+// gh-обвязка: только чтение.
+
+function ghJson(args) {
+  return JSON.parse(execFileSync('gh', args, { encoding: 'utf8', maxBuffer: 64 * 1024 * 1024 }));
+}
+
+export function fetchSnapshot({ repo, since, until, gh = ghJson, git = null }) {
+  const sinceIso = new Date(since).toISOString();
+  const untilMs = at(until);
+  const issues = [];
+  for (let page = 1; page <= 5; page++) {
+    const batch = gh(['api', `repos/${repo}/issues?state=closed&since=${encodeURIComponent(sinceIso)}&per_page=100&page=${page}`]);
+    if (!Array.isArray(batch) || !batch.length) break;
+    for (const issue of batch) {
+      if (issue.pull_request) continue;
+      const closed = at(issue.closed_at);
+      if (Number.isFinite(closed) && closed >= at(sinceIso) && closed <= untilMs) issues.push(issue);
+    }
+    if (batch.length < 100) break;
+  }
+  const timelines = new Map();
+  for (const issue of issues) {
+    const events = [];
+    for (let page = 1; page <= 3; page++) {
+      const batch = gh(['api', `repos/${repo}/issues/${issue.number}/timeline?per_page=100&page=${page}`, '-H', 'Accept: application/vnd.github+json']);
+      if (!Array.isArray(batch) || !batch.length) break;
+      events.push(...batch);
+      if (batch.length < 100) break;
+    }
+    timelines.set(Number(issue.number), events);
+  }
+  const runs = [];
+  for (let page = 1; page <= 15; page++) {
+    const batch = gh(['api', `repos/${repo}/actions/runs?created=${encodeURIComponent(`${sinceIso.slice(0, 10)}..${new Date(untilMs).toISOString().slice(0, 10)}`)}&per_page=100&page=${page}`]);
+    const rows = batch?.workflow_runs || [];
+    runs.push(...rows);
+    if (rows.length < 100) break;
+  }
+  const reviewFiles = git
+    ? git(['ls-tree', '--name-only', 'HEAD:docs/reviews']).split('\n').filter(Boolean)
+    : [];
+  return { issues, timelines, runs, reviewFiles };
+}
+
+if (isMainModule(import.meta.url)) {
+  const arg = (name, fallback) => process.argv.find((a) => a.startsWith(`--${name}=`))?.slice(name.length + 3) ?? fallback;
+  const repo = arg('repo', process.env.GITHUB_REPOSITORY);
+  if (!repo) {
+    console.error('usage: process-metrics.mjs --repo=<owner/repo> [--days=7] [--until=ISO] [--output=file.md] [--json=file.json]');
+    process.exit(2);
+  }
+  const until = arg('until', new Date().toISOString());
+  const days = Number(arg('days', '7'));
+  const since = new Date(at(until) - days * 86_400_000).toISOString();
+  const git = (args) => execFileSync('git', args, { encoding: 'utf8' });
+  const snapshot = fetchSnapshot({ repo, since, until, git });
+  const report = buildReport({ since, until, ...snapshot });
+  const markdown = renderMarkdown(report);
+  const output = arg('output');
+  if (output) { mkdirSync(dirname(output), { recursive: true }); writeFileSync(output, markdown, 'utf8'); }
+  const json = arg('json');
+  if (json) { mkdirSync(dirname(json), { recursive: true }); writeFileSync(json, `${JSON.stringify(report, null, 2)}\n`, 'utf8'); }
+  process.stdout.write(markdown);
+}
diff --git a/test/process-metrics.test.mjs b/test/process-metrics.test.mjs
new file mode 100644
index 00000000..32399945
--- /dev/null
+++ b/test/process-metrics.test.mjs
@@ -0,0 +1,116 @@
+// #637: еженедельный замер процесса — чистые функции над снимками GitHub.
+import test from 'node:test';
+import assert from 'node:assert/strict';
+import { readFileSync } from 'node:fs';
+import {
+  buildReport, issueMetrics, jobMinutes, pipelineMetrics, renderMarkdown, reviewRounds, runMetrics,
+} from '../scripts/process-metrics.mjs';
+
+const T = (h) => new Date(Date.UTC(2026, 8, 15, 0, Math.round(h * 60))).toISOString();
+const labeled = (name, h) => ({ event: 'labeled', label: { name }, created_at: T(h) });
+
+test('#637 issueMetrics: вход по первой статусной метке, S7/S8 по первой постановке, повторы считаются отдельно', () => {
+  const m = issueMetrics({ number: 600, title: 't', closed_at: T(30), state_reason: 'completed' }, [
+    labeled('bug', 0), labeled('S2-analysis', 1), labeled('S3-spec', 2), labeled('S4-spec-review', 3),
+    labeled('S5-ready', 5), labeled('S6-in-progress', 6), labeled('S7-code-review', 10),
+    { event: 'unlabeled', label: { name: 'S7-code-review' }, created_at: T(11) },
+    labeled('S7-code-review', 12), labeled('S8-merged', 20),
+  ]);
+  assert.equal(m.enteredAt, Date.parse(T(1)), 'bug — не статус');
+  assert.equal(m.leadToS7Ms, 9 * 3_600_000);
+  assert.equal(m.reviewToMergeMs, 10 * 3_600_000);
+  assert.equal(m.leadToS8Ms, 19 * 3_600_000);
+  assert.equal(m.specLeadMs, 2 * 3_600_000);
+  assert.equal(m.s7Requests, 2);
+  assert.equal(m.s4Requests, 1);
+  const bare = issueMetrics({ number: 1, closed_at: 'x', state_reason: 'not_planned' }, []);
+  assert.equal(bare.leadToS7Ms, null);
+  assert.equal(bare.closedAt, null);
+});
+
+test('#637 reviewRounds: максимум раунда по документам, отдельно CODE и SPEC', () => {
+  const rounds = reviewRounds(['CODE-REVIEW-600-r1.md', 'CODE-REVIEW-600-r2.md', 'SPEC-REVIEW-600-r1.md', 'CODE-REVIEW-601-r1.md', 'README.md', 'CODE-REVIEW-issue-5.md']);
+  assert.equal(rounds.get('CODE:600'), 2);
+  assert.equal(rounds.get('SPEC:600'), 1);
+  assert.equal(rounds.get('CODE:601'), 1);
+  assert.equal(rounds.size, 3);
+});
+
+const run = (over) => ({
+  name: 'Проверка (CI)', event: 'push', conclusion: 'success', run_started_at: T(0), updated_at: T(1), ...over,
+});
+
+test('#637 runMetrics: по workflow — исходы, wall-time, события; прогоны конвейера сведены в одну строку', () => {
+  const rows = runMetrics([
+    run(), run({ conclusion: 'failure', event: 'workflow_dispatch' }), run({ conclusion: 'cancelled', updated_at: T(0) }),
+    run({ name: 'Ревью-конвейер', display_title: 'process #600 · S7-code-review · x', event: 'issues', updated_at: T(2) }),
+    run({ name: 'Ревью-конвейер', display_title: 'process #600 · bug · x', event: 'issues', conclusion: 'skipped', updated_at: T(0) }),
+  ]);
+  const validate = rows.find((r) => r.workflow === 'Проверка (CI)');
+  assert.deepEqual([validate.runs, validate.success, validate.failure, validate.cancelled], [3, 1, 1, 1]);
+  assert.equal(validate.wallMs, 2 * 3_600_000, 'отменённый без длительности не считается');
+  assert.deepEqual(validate.events, { push: 2, workflow_dispatch: 1 });
+  const process = rows.find((r) => r.workflow === 'process');
+  assert.deepEqual([process.runs, process.skipped], [2, 1]);
+});
+
+test('#637 pipelineMetrics: минуты S7/S4 по имени прогона, skipped не считаются', () => {
+  const p = pipelineMetrics([
+    run({ display_title: 'process #600 · S7-code-review · x', updated_at: T(1) }),
+    run({ display_title: 'process #600 · S7-code-review · x', updated_at: T(2) }),
+    run({ display_title: 'process #601 · S7-code-review · x', conclusion: 'skipped', updated_at: T(2) }),
+    run({ display_title: 'process #602 · S4-spec-review · x', run_started_at: T(0), updated_at: T(0.5) }),
+  ]);
+  assert.deepEqual(p['S7-code-review'], { runs: 2, issues: 1, wallMinutes: 180, perRunMinutes: 90 });
+  assert.deepEqual(p['S4-spec-review'], { runs: 1, issues: 1, wallMinutes: 30, perRunMinutes: 30 });
+});
+
+test('#637 jobMinutes: доля «Мутанты» по именам job', () => {
+  const jobs = new Map([[1, [
+    { name: 'Мутанты по диффу (1/6): x', started_at: T(0), completed_at: T(1) },
+    { name: 'Фронтенд: типы', started_at: T(0), completed_at: T(0.5) },
+    { name: 'сломан', started_at: 'x', completed_at: T(1) },
+  ]]]);
+  assert.deepEqual(jobMinutes(jobs), { totalMinutes: 90, mutantMinutes: 60, mutantShare: 67 });
+  assert.deepEqual(jobMinutes(new Map()), { totalMinutes: 0, mutantMinutes: 0, mutantShare: null });
+});
+
+test('#637 buildReport + renderMarkdown: сводка воспроизводит цифры аудита на фикстуре', () => {
+  // Форма аудита 22.09: 30 issue с код-ревью — 15 r1, 13 r2, 2 r3 → 1.57; Validate 226 прогонов.
+  const issues = [];
+  const timelines = new Map();
+  const reviewFiles = [];
+  for (let n = 1; n <= 30; n++) {
+    issues.push({ number: n, title: `t${n}`, closed_at: T(48), state_reason: 'completed' });
+    timelines.set(n, [labeled('S1-new', 0), labeled('S7-code-review', 24), labeled('S8-merged', 30)]);
+    const rounds = n <= 15 ? 1 : n <= 28 ? 2 : 3;
+    for (let r = 1; r <= rounds; r++) reviewFiles.push(`CODE-REVIEW-${n}-r${r}.md`);
+  }
+  issues.push({ number: 99, title: 'dropped', closed_at: T(48), state_reason: 'not_planned' });
+  const runs = Array.from({ length: 226 }, (_, k) => run({ conclusion: k < 178 ? 'success' : k < 215 ? 'failure' : 'cancelled' }));
+  const report = buildReport({ since: T(0), until: T(48), issues, timelines, reviewFiles, runs });
+  assert.equal(report.issues.completed, 30);
+  assert.equal(report.issues.notPlanned, 1);
+  assert.equal(Math.round(report.issues.codeReviewRounds.mean * 100) / 100, 1.57);
+  assert.deepEqual(report.issues.codeReviewRounds.distribution, { 1: 15, 2: 13, 3: 2 });
+  assert.equal(report.issues.medianLeadToS7Hours, 24);
+  assert.equal(report.issues.medianReviewToMergeHours, 6);
+  const validate = report.runs.find((r) => r.workflow === 'Проверка (CI)');
+  assert.deepEqual([validate.runs, validate.success, validate.failure, validate.cancelled], [226, 178, 37, 11]);
+  const md = renderMarkdown(report);
+  assert.match(md, /Закрыто issue: \*\*31\*\* \(completed 30, not_planned 1\)/);
+  assert.match(md, /Раундов код-ревью на issue \| 1\.57 \(r1: 15, r2: 13, r3: 2\)/);
+  assert.match(md, /\| Проверка \(CI\) \| 226 \| 178 \| 37 \| 11 \| 0 \| 13560 \|/);
+  assert.match(md, /\| #99 \| not_planned \| — \| — \| — \/ — \| 0 \|/);
+  assert.equal(report.jobs, null, 'без jobs job-минуты не выдумываются');
+});
+
+test('#637 workflow: еженедельный запуск читает только, публикует summary и artifact', () => {
+  const wf = readFileSync(new URL('../.github/workflows/process-metrics.yml', import.meta.url), 'utf8');
+  assert.match(wf, /schedule:\n(?:\s+#[^\n]*\n)*\s+- cron: '/);
+  assert.match(wf, /workflow_dispatch:/);
+  assert.match(wf, /permissions:\n\s+contents: read\n\s+actions: read\n\s+issues: read/);
+  assert.match(wf, /node scripts\/process-metrics\.mjs[\s\S]*--output=artifacts\/process-metrics\/report\.md/);
+  assert.match(wf, /GITHUB_STEP_SUMMARY/);
+  assert.ok(!/issues: write/.test(wf), 'метрики ничего не пишут в issue');
+});