feat(apps): version on every build, a «what changed» modal, and a clean update

- The build number is the commit count, so every build raises it with no
  file to bump. scripts/app-version.mjs bakes it into each front-end
  (__APP_BUILD__) and writes dist/version.json with that app's notes.
- Notes come from commit messages: only Persian lines that start with
  one of the four app tags are shown, each to its own app
  (docs/RELEASE-NOTES.md).
- Both customer apps and the admin panel poll version.json (every 5
  minutes and on return to the tab, bypassing caches). A newer build opens
  a modal that cannot be dismissed. «به‌روزرسانی» unregisters the service
  worker, empties Cache Storage and reloads; localStorage (sign-in, cart,
  settings) is kept.
- Replaces legacy's version dialog, which compared against a
  package.json version that was never bumped and so never opened, and
  useRefresh, which swapped in a new service worker silently.
- nginx (all three apps and nginx-spa.conf): index.html, sw.js and
  version.json are never cached. sw.js used to fall under the 6-month rule,
  which could pin a browser to an old release.

Checked: served with the real nginx config, a newer version.json opens
the modal with its notes; the same build does not.

اپ: اجرت هر کالا حالا همان است که در فاکتور حساب می‌شود؛ درصد خود شما و تخفیف‌ها هم در آن آمده است.
اپ: علاقه‌مندی‌های شما ذخیره می‌شوند و در هر دستگاهی که وارد شوید دیده می‌شوند.
اپ: از این به بعد هر نسخه‌ی تازه با فهرست تغییراتش اعلام می‌شود.
پنل: بخش تازه‌ی «اجرت»: فرمول اجرت را با یک نمونه امتحان و بعد تأیید کنید.
پنل: شهرها مثل قبل به‌صورت درخت‌اند (کشور، استان، شهر، محله)؛ شهری که درصد ندارد درصد شهر بالاتر را می‌گیرد.
پنل: «تاریخ تولد» به فرم مشتری عمده و تکی برگشت.
پنل: در گزارش تجمیعی سفارش‌ها، دکمه‌ی «دریافت فایل اکسل» اضافه شد.
پنل: رد احراز هویت مشتری حالا دلیل هم می‌گیرد.
پنل: با تأیید یا رد سند مالی، به مشتری پیامک می‌رود؛ در پیامک گروهی، %name با نام مشتری عوض می‌شود.
پنل: از این به بعد هر نسخه‌ی تازه‌ی پنل با فهرست تغییراتش اعلام می‌شود.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

scripts/app-version.mjs

@@ -0,0 +1,89 @@
+// App version + «what changed» notes, baked into each front-end at build time.
+//
+// Version: the build number is the commit count of HEAD, so it only ever goes
+// up and needs no file to bump. It is compiled into the bundle (__APP_BUILD__)
+// and written to dist/version.json; the running app polls that file and, when
+// the server's build is newer than its own, shows the update modal.
+//
+// Notes come from commit messages. Technical text is never shown: only lines
+// that start with a Persian tag, written for the person using that part:
+//
+//   اپ: …      both customer apps
+//   اپ۱: …     user-app only
+//   اپ۲: …     user-app-v2 only
+//   پنل: …     the admin panel
+//
+// A commit may carry several such lines. Each app shows only its own.
+
+import { execFileSync } from 'node:child_process';
+
+const TAGS = {
+  'user-app': ['اپ', 'اپ۱', 'اپ1'],
+  'user-app-v2': ['اپ', 'اپ۲', 'اپ2'],
+  'admin-panel': ['پنل'],
+};
+
+/** How many released builds with notes the file keeps. */
+const HISTORY = 30;
+
+function git(args, cwd) {
+  return execFileSync('git', args, { cwd, encoding: 'utf8', stdio: ['ignore', 'pipe', 'ignore'] });
+}
+
+/** Pure, for testing: the note lines in one commit message that belong to `app`. */
+export function notesFor(app, message) {
+  const tags = TAGS[app] ?? [];
+  const out = [];
+  for (const raw of message.split(/\r?\n/)) {
+    const m = /^\s*([^\s:：]+)\s*[:：]\s*(.+?)\s*$/.exec(raw);
+    // The note must be Persian: a wrapped English line that happens to begin
+    // with a tag (e.g. in a commit body explaining the tags) is not a note.
+    if (m && tags.includes(m[1]) && /[؀-ۿ]/.test(m[2])) out.push(m[2]);
+  }
+  return out;
+}
+
+export function computeAppVersion(app, cwd = process.cwd()) {
+  const builtAt = new Date().toISOString();
+  try {
+    const build = Number(git(['rev-list', '--count', 'HEAD'], cwd).trim());
+    const commit = git(['rev-parse', '--short', 'HEAD'], cwd).trim();
+    // Newest first; a record separator between commits, unit separator between fields.
+    const log = git(['log', '-n', '400', '--format=%ct%x1f%B%x1e'], cwd);
+    const history = [];
+    log.split('\x1e').forEach((rec, i) => {
+      const [ts, body] = rec.replace(/^\s+/, '').split('\x1f');
+      if (!body) return;
+      const notes = notesFor(app, body);
+      if (!notes.length) return;
+      history.push({ build: build - i, date: new Date(Number(ts) * 1000).toISOString(), notes });
+    });
+    return { app, build, version: `1.${build}`, commit, builtAt, history: history.slice(0, HISTORY) };
+  } catch {
+    // Not a git checkout (e.g. a copied tree): still a valid, if note-less, build.
+    const build = Math.floor(Date.now() / 1000);
+    return { app, build, version: `1.${build}`, commit: null, builtAt, history: [] };
+  }
+}
+
+/**
+ * Vite plugin: defines __APP_BUILD__ / __APP_VERSION__ and emits version.json.
+ * The dev server has no version.json, so the update check stays quiet there.
+ */
+export function appVersion(app) {
+  const info = computeAppVersion(app);
+  return {
+    name: 'app-version',
+    config() {
+      return {
+        define: {
+          __APP_BUILD__: JSON.stringify(info.build),
+          __APP_VERSION__: JSON.stringify(info.version),
+        },
+      };
+    },
+    generateBundle() {
+      this.emitFile({ type: 'asset', fileName: 'version.json', source: JSON.stringify(info, null, 2) });
+    },
+  };
+}