test: close PDF export witness gaps

Issue: #53
User-Visible: no

scripts/mutation-gate.mjs

@@ -128,7 +128,7 @@ const MUTANT_DEFINITIONS = [
   {
     id: 'pdf-dimensions-ignore-toggle',
     guard: 'npx tsc -p tsconfig.test.json && node scripts/fix-test-build.mjs '
-      + '&& node --test --test-name-pattern="respects names/dimensions" test/pdf-scene.test.mjs',
+      + '&& node --test --test-name-pattern="dimensions switch removes" test/pdf-scene.test.mjs',
     because: 'turning dimensions off must remove the external dimension chain as well as room labels',
     patches: [{
       file: 'src/pdf/pdf-scene.ts',

src/pdf/pdf-date.ts

@@ -5,4 +5,3 @@ export function pdfLocalDate(value: Date): string {
   const day = String(value.getDate()).padStart(2, '0');
   return `${year}-${month}-${day}`;
 }
-

test/pdf-scene.test.mjs

@@ -103,6 +103,15 @@ test('shared wall architecture is emitted once and devices never enter the PDF s
     && command.text.includes('secret-device-marker')));
 });
 
+test('dimensions switch removes the external chain from physical walls', () => {
+  const texts = (dimensions) => sharedPage({
+    dimensions, roomNames: false, decor: false, backdrop: false,
+  }).commands.filter((command) => command.kind === 'text').map((command) => command.text)
+    .filter((value) => value !== '1 m' && /^[-+]?\d+(?:[.,]\d+)?\s(?:m|cm|ft|in)$/.test(value));
+  assert.ok(texts(true).length > 0, 'the thick outer wall has a dimension chain');
+  assert.deepEqual(texts(false), [], 'the option removes every dimension value');
+});
+
 test('backdrop is below physical architecture and disappears with its option', () => {
   const raster = {
     id: 'backdrop', bytes: new Uint8Array([0xff, 0xd8, 0xff, 0xd9]),

test/pdf-svg-path.test.mjs

@@ -15,7 +15,6 @@ test('every designer furniture path converts to finite PDF vector operations', (
     }
   }
 });
-
 test('arc and affine transforms become deterministic cubic paths', () => {
   const first = transformSvgPath('M0 5A5 5 0 1 1 10 5Z', {
     a: 2, b: 0, c: 0, d: 3, e: 7, f: 11,
@@ -27,4 +26,3 @@ test('arc and affine transforms become deterministic cubic paths', () => {
   assert.ok(first.some((operation) => operation.op === 'C'));
   assert.deepEqual(first.at(-1), { op: 'Z' });
 });
-