ci: include dynamic backend inputs in gates (#542)

Issue: #542
User-Visible: no

test/check-inputs.test.mjs

@@ -182,6 +182,27 @@ test('§8.1 представители: каждая категория кажд
   }
 });
 
+test('#542: каждый динамический cross-runtime input выбирает backend без глобального fallback', () => {
+  const cases = [
+    [p('src', 'plan-optimizer.ts'), p('tests_backend', 'test_validation.py')],
+    [p('src', 'logic.ts'), p('tests_backend', 'test_support_package.py')],
+    [p('demo', 'fixtures', 'large-house.mjs'), p('tests_backend', 'test_validation.py')],
+    [p('demo', 'fixtures', 'visual-matrix.mjs'), p('tests_backend', 'test_validation.py')],
+  ];
+  for (const [input, consumer] of cases) {
+    assert.ok(MANIFEST.backend.has(consumer), `${consumer}: consumer не входит в backend`);
+    assert.ok(MANIFEST.backend.has(input), `${consumer} читает ${input}, но manifest его потерял`);
+    const { affected, unknown } = checksAffectedBy([input], ROOT, { manifest: MANIFEST });
+    assert.ok(affected.has('backend'), `${input}: backend не выбран`);
+    assert.ok(affected.size < CHECK_NAMES.length, `${input}: сработал глобальный fallback вместо точного owner`);
+    assert.deepEqual(unknown, [], input);
+  }
+
+  const unrelated = p('demo', 'fixtures', 'wall-draw-click.mjs');
+  assert.ok(!MANIFEST.backend.has(unrelated), `${unrelated}: точные roots нельзя расширять до всего каталога`);
+  assert.ok(!checksAffectedBy([unrelated], ROOT, { manifest: MANIFEST }).affected.has('backend'));
+});
+
 test('§8.1 обратная проба (AC6): UI — не вход backend, backend — не вход браузерных job без причины', () => {
   for (const file of ['src/houseplan-card.ts', 'src/houseplan-editor-runtime.ts', 'src/iso-overlays.ts', 'package.json']) {
     assert.ok(!MANIFEST.backend.has(file), `backend зависит от ${file}`);

test/gate-reuse.test.mjs

@@ -32,10 +32,14 @@ const makeTree = () => {
   put('scripts/gate-reuse.mjs', '// reuse protocol\n');
   put('scripts/check-inputs.mjs', '// manifest\n');
   put('src/card.ts', "export const CARD_VERSION = '1.0.0';\n");
+  put('src/plan-optimizer.ts', 'export const PLAN_MODEL_VERSION = 1;\n');
+  put('src/logic.ts', 'export const logic = 1;\n');
   put('demo/serve.mjs', "import './bundle-freshness.mjs';\n");
   put('demo/bundle-freshness.mjs', 'export const fresh = 1;\n');
   put('demo/srv/demo.html', '<div id="host"></div>\n');
   put('demo/fixtures/one.mjs', 'export const fixture = 1;\n');
+  put('demo/fixtures/large-house.mjs', 'export const makeLargeHouseFixture = () => ({});\n');
+  put('demo/fixtures/visual-matrix.mjs', 'export const makeVisualMatrixFixture = () => ({});\n');
   put('demo/smoke_alpha.mjs', "import { launch } from './serve.mjs';\nimport '../scripts/model-invariants.mjs';\nconsole.log(1);\n");
   put('demo/smoke_beta.mjs', "import { launch } from './serve.mjs';\nconsole.log(2);\n");
   put('scripts/model-invariants.mjs', 'export const invariants = 1;\n');
@@ -176,6 +180,28 @@ test('#492 backend inputs the old HARNESS did not know: relay, schema, converter
   }
 });
 
+test('#542 dynamic backend inputs invalidate its reuse key and unrelated fixtures do not', () => {
+  const { dir, put } = makeTree();
+  const bumpsBackend = (rel, text) => {
+    const before = reuseKey(dir, 'backend');
+    put(rel, text);
+    assert.notEqual(reuseKey(dir, 'backend'), before, `${rel}: backend reuse key не изменился`);
+  };
+  try {
+    bumpsBackend('src/plan-optimizer.ts', 'export const PLAN_MODEL_VERSION = 2;\n');
+    bumpsBackend('src/logic.ts', 'export const logic = 2;\n');
+    bumpsBackend('demo/fixtures/large-house.mjs', 'export const makeLargeHouseFixture = () => ({ changed: true });\n');
+    bumpsBackend('demo/fixtures/visual-matrix.mjs', 'export const makeVisualMatrixFixture = () => ({ changed: true });\n');
+
+    const before = reuseKey(dir, 'backend');
+    put('demo/fixtures/one.mjs', 'export const fixture = 2;\n');
+    assert.equal(reuseKey(dir, 'backend'), before,
+      'нерелевантная fixture не должна превращать backend в широкий UI-гейт');
+  } finally {
+    rmSync(dir, { recursive: true, force: true });
+  }
+});
+
 test('the built bundle is outside every key — each job builds it itself (#208)', () => {
   const { dir, put } = makeTree();
   try {