diff --git a/client/CLAUDE.md b/client/CLAUDE.md
index 6937dbc53..db3c515f9 100644
--- a/client/CLAUDE.md
+++ b/client/CLAUDE.md
@@ -13,7 +13,7 @@ npm run lint:warnings     # eslint, failing on any error and on any warning coun
 npm run lint:pages        # enforce the Page pattern (CI gate)
 npm run lint:rtl          # physical left/right sides and rtl-lint-disable comments may only shrink per file (CI gate; --list shows them, --update lowers both baselines)
 npm run lint:size         # no source file or stylesheet past 1000 lines, no test past 2000, counted wrapped at 120 columns; longer ones may only shrink (CI gate; --update lowers the baseline)
-npm run lint:format       # Prettier: every file outside scripts/format-baseline.json must be formatted, the list only shrinks (CI gate; npx prettier --write <file>, then --update)
+npm run lint:format       # Prettier: every .ts/.tsx/.mjs/.css file under src/, tests/, e2e/ and scripts/ outside scripts/format-baseline.json must be formatted, the list only shrinks (CI gate; npx prettier --write <file>, then --update)
 npm run lint:layers       # imports go downwards: components never import pages/ or mobile/, nothing under the views imports a view; per-file counts may only shrink (CI gate; --list, --update)
 npm run lint:offline      # no view file (components/mobile/pages/hooks) imports src/api/ beyond scripts/offline-baseline.json, which only shrinks (CI gate; --list, --update)
 npm run lint:skips        # no .only anywhere; skipped/todo/fixme tests per file may only shrink against scripts/skip-baseline.json (CI gate; skipIf/runIf and Playwright's test.skip(condition, 'why') are fine)
diff --git a/client/scripts/format-baseline.json b/client/scripts/format-baseline.json
index c262ff9c0..cc96c881a 100644
--- a/client/scripts/format-baseline.json
+++ b/client/scripts/format-baseline.json
@@ -1,4 +1,62 @@
 [
+  "e2e/auth.setup.ts",
+  "e2e/create-trip.spec.ts",
+  "e2e/dashboard.spec.ts",
+  "e2e/dates.ts",
+  "e2e/help/admin.guide.ts",
+  "e2e/help/atlas.guide.ts",
+  "e2e/help/collections.guide.ts",
+  "e2e/help/dashboard.guide.ts",
+  "e2e/help/dawarich-track.ts",
+  "e2e/help/external.ts",
+  "e2e/help/fixtures.ts",
+  "e2e/help/guide.ts",
+  "e2e/help/journey.guide.ts",
+  "e2e/help/promote.mjs",
+  "e2e/help/run.mjs",
+  "e2e/help/settings.guide.ts",
+  "e2e/help/trip-bookings.guide.ts",
+  "e2e/help/trip-collab.guide.ts",
+  "e2e/help/trip-costs.guide.ts",
+  "e2e/help/trip-day-detail.guide.ts",
+  "e2e/help/trip-days.guide.ts",
+  "e2e/help/trip-files.guide.ts",
+  "e2e/help/trip-lists.guide.ts",
+  "e2e/help/trip-map.guide.ts",
+  "e2e/help/trip-place.guide.ts",
+  "e2e/help/trip-places.guide.ts",
+  "e2e/help/trip-roadtrip.guide.ts",
+  "e2e/help/trip-shared.ts",
+  "e2e/help/trip-transports.guide.ts",
+  "e2e/help/trip.guide.ts",
+  "e2e/help/vacay.guide.ts",
+  "e2e/helpers.ts",
+  "e2e/ipad-scroll-1432.spec.ts",
+  "e2e/login.public.spec.ts",
+  "e2e/mobile-day-swipe-2051.spec.ts",
+  "e2e/reorder-arrows.spec.ts",
+  "e2e/screenshots/auth.shot.ts",
+  "e2e/screenshots/collab.shot.ts",
+  "e2e/screenshots/detail.shot.ts",
+  "e2e/screenshots/dialogs.shot.ts",
+  "e2e/screenshots/pages.shot.ts",
+  "e2e/screenshots/plan.shot.ts",
+  "e2e/screenshots/planner.shot.ts",
+  "e2e/screenshots/promote.mjs",
+  "e2e/screenshots/seed.setup.ts",
+  "e2e/screenshots/seed.ts",
+  "e2e/screenshots/settings.shot.ts",
+  "e2e/screenshots/shot.ts",
+  "e2e/screenshots/shots.setup.ts",
+  "e2e/server-launch.mjs",
+  "e2e/trip-planner.spec.ts",
+  "e2e/urlbar-scroll-1809.spec.ts",
+  "scripts/build-country-shapes.mjs",
+  "scripts/check-gl-split.mjs",
+  "scripts/check-page-pattern.mjs",
+  "scripts/generate-icons.mjs",
+  "scripts/patch-maplibre.mjs",
+  "scripts/theme-lint.mjs",
   "src/App.test.tsx",
   "src/App.tsx",
   "src/App.versionHandover.test.tsx",
diff --git a/client/scripts/format-lint.mjs b/client/scripts/format-lint.mjs
index 2f0a7c1b6..161d92b8f 100644
--- a/client/scripts/format-lint.mjs
+++ b/client/scripts/format-lint.mjs
@@ -8,7 +8,7 @@
  * check came in are listed in scripts/format-baseline.json and the list only
  * shrinks: every file outside it, a new one in particular, must be formatted,
  * and a listed file leaves the list once it has been formatted. The check
- * covers .ts, .tsx and .css under src/ and tests/.
+ * covers .ts, .tsx, .mjs and .css under src/, tests/, e2e/ and scripts/.
  *
  *   npm run lint:format              check against the baseline (CI)
  *   npm run lint:format -- --list    print every unformatted file
diff --git a/client/scripts/lib/format.mjs b/client/scripts/lib/format.mjs
index 3e3bd1f96..1814d11cd 100644
--- a/client/scripts/lib/format.mjs
+++ b/client/scripts/lib/format.mjs
@@ -16,9 +16,10 @@ import {
   writeBaseline,
 } from './ratchet.mjs';
 
-export const DIRS = ['src', 'tests'];
+/** The app, its tests, the Playwright specs and the client's own tooling. */
+export const DIRS = ['src', 'tests', 'e2e', 'scripts'];
 
-export const accepts = (key) => /\.(?:tsx?|css)$/.test(key);
+export const accepts = (key) => /\.(?:tsx?|mjs|css)$/.test(key);
 
 /**
  * Whether Prettier leaves the file as it is, with the config that applies to
diff --git a/client/tests/unit/scripts/format-lint.test.ts b/client/tests/unit/scripts/format-lint.test.ts
index 33ffec470..ff6dc57ef 100644
--- a/client/tests/unit/scripts/format-lint.test.ts
+++ b/client/tests/unit/scripts/format-lint.test.ts
@@ -13,7 +13,14 @@ const FORMATTED = "const a = 'x';\n";
 const UNFORMATTED = 'const a = "x"\n';
 
 function run(baseline: string[], files: Record<string, string>, update = false) {
-  tree = ratchetTree({ ...CONFIG, [BASELINE]: JSON.stringify(baseline), 'tests/keep.ts': FORMATTED, ...files });
+  tree = ratchetTree({
+    ...CONFIG,
+    [BASELINE]: JSON.stringify(baseline),
+    'src/keep.ts': FORMATTED,
+    'tests/keep.ts': FORMATTED,
+    'e2e/keep.spec.ts': FORMATTED,
+    ...files,
+  });
   return check({ root: tree.root, baselinePath: tree.path(BASELINE), update, ...tree.out });
 }
 
@@ -58,13 +65,34 @@ describe('lint:format', () => {
     expect(JSON.parse(readFileSync(tree.path(BASELINE), 'utf8'))).toEqual([]);
   });
 
+  it('FORMAT-007: holds the Playwright specs and the client scripts to the same rule', async () => {
+    const files = {
+      'e2e/new.spec.ts': UNFORMATTED,
+      'scripts/new-lint.mjs': UNFORMATTED,
+      'scripts/data.json': '{"a":1}',
+    };
+    expect(await run([], files)).toBe(1);
+    const errors = tree.error.join('\n');
+    expect(errors).toMatch(/e2e\/new\.spec\.ts is not formatted/);
+    expect(errors).toMatch(/scripts\/new-lint\.mjs is not formatted/);
+    expect(errors).not.toMatch(/data\.json/);
+    tree.remove();
+    expect(await run(['e2e/new.spec.ts', 'scripts/new-lint.mjs'], files)).toBe(0);
+  });
+
   it('FORMAT-006: a missing baseline or Prettier config stops the check', async () => {
-    tree = ratchetTree({ ...CONFIG, 'src/a.ts': FORMATTED, 'tests/a.ts': FORMATTED });
+    tree = ratchetTree({
+      ...CONFIG,
+      'src/a.ts': FORMATTED,
+      'tests/a.ts': FORMATTED,
+      'e2e/a.ts': FORMATTED,
+      'scripts/a.mjs': FORMATTED,
+    });
     await expect(check({ root: tree.root, baselinePath: tree.path(BASELINE), ...tree.out })).rejects.toThrow(
       RatchetError
     );
     tree.remove();
-    tree = ratchetTree({ [BASELINE]: '[]', 'src/a.ts': FORMATTED, 'tests/a.ts': FORMATTED });
+    tree = ratchetTree({ [BASELINE]: '[]', 'src/a.ts': FORMATTED, 'tests/a.ts': FORMATTED, 'e2e/a.ts': FORMATTED });
     // No config in the tree; the lookup climbs no further than the temp directory's parents,
     // which hold none either.
     const result = check({ root: tree.root, baselinePath: tree.path(BASELINE), ...tree.out });