feat(compliance): define offline legacy format fixtures

.changeset/offline-legacy-format-fixtures.md

@@ -0,0 +1,5 @@
+---
+"adcontextprotocol": patch
+---
+
+Define an explicitly gated, offline test-kit catalog for legacy creative asset fixtures. Require exact format references and distinguish missing preparation from malformed fixture inputs without imposing Creative Protocol tools on media-buy-only sellers.

scripts/lint-storyboard-sample-request-schema.cjs

@@ -295,16 +295,19 @@ function normalizeSubstitutions(value, schema) {
  * Keep ordinary slots, malformed instructions, and every other request field
  * visible to schema validation. Direct validateStep calls remain wire-strict.
  */
-function normalizeExecutionOnlyAssetDirectives(value, isAssetMap = false) {
-  if (Array.isArray(value)) return value.map(item => normalizeExecutionOnlyAssetDirectives(item));
+function normalizeExecutionOnlyAssetDirectives(value, isAssetMap = false, allowTestKitCatalog = false) {
+  if (Array.isArray(value)) return value.map(item => normalizeExecutionOnlyAssetDirectives(item, false, allowTestKitCatalog));
   if (!value || typeof value !== 'object') return value;
   const out = {};
   for (const [key, item] of Object.entries(value)) {
-    if (isAssetMap && key === '$build_assets_from_format'
-        && typeof item === 'string' && /^\$context\.[A-Za-z_][A-Za-z0-9_]*$/.test(item)) {
+    const contextRef = candidate => typeof candidate === 'string'
+      && /^\$context\.[A-Za-z_][A-Za-z0-9_]*$/.test(candidate);
+    const catalogDirective = allowTestKitCatalog && item && typeof item === 'object' && !Array.isArray(item)
+      && Object.keys(item).length === 2 && item.catalog === 'test_kit' && contextRef(item.format_id);
+    if (isAssetMap && key === '$build_assets_from_format' && (contextRef(item) || catalogDirective)) {
       continue;
     }
-    out[key] = normalizeExecutionOnlyAssetDirectives(item, key === 'assets');
+    out[key] = normalizeExecutionOnlyAssetDirectives(item, key === 'assets', allowTestKitCatalog);
   }
   return out;
 }
@@ -317,7 +320,8 @@ function normalizeExecutionOnlyAssetDirectives(value, isAssetMap = false) {
  * coverage; this lint must still catch broken bindings and authored payloads.
  */
 function normalizeStoryboardSampleRequests(storyboard, step, schema) {
-  const sampleRequest = normalizeExecutionOnlyAssetDirectives(step.sample_request);
+  const sampleRequest = normalizeExecutionOnlyAssetDirectives(step.sample_request, false,
+    Array.isArray(storyboard.requires) && storyboard.requires.includes('test_kit_format_catalog_runner'));
   if (!storyboard.creative_build_probe || step.task !== 'build_creative'
       || step.requires_contract !== 'creative_build_probe_runner') {
     return [normalizeSubstitutions(sampleRequest, schema)];

static/compliance/source/universal/storyboard-schema.yaml

@@ -152,7 +152,7 @@
 #   never claimed the capability.
 #
 # requires: string[] (optional — storyboard-level runtime requirement gate.
-#   Known values: controller | seeded_state | real_wire | collect_product_pages_runner | webhook_receiver | multi_agent |
+#   Known values: controller | seeded_state | real_wire | collect_product_pages_runner | test_kit_format_catalog_runner | webhook_receiver | multi_agent |
 #   trusted_match_publisher_auth_runner | property_list_reference_runner (forward-compat:
 #   unrecognized values are NOT schema violations — runners emit
 #   requirement_unmet at runtime; see Forward compatibility below).
@@ -164,6 +164,13 @@
 #
 #   Values and availability:
 #
+#     test_kit_format_catalog_runner — intrinsic support for the explicit offline
+#                    legacy-format catalog form of $build_assets_from_format
+#                    described below. Storyboards using that form MUST declare
+#                    this requirement. Older runners report requirement_unmet
+#                    before fixture mutation. Availability means syntax support,
+#                    not that the operator supplied a matching declaration.
+#
 #     collect_product_pages_runner — intrinsic support for the opt-in wholesale
 #                    product-page collector. No operator configuration is needed.
 #                    A storyboard using collect_product_pages MUST declare this
@@ -1177,6 +1184,32 @@
 #   example, `legal`, `disclaimer`, or `alt_text`) from an arbitrary fallback
 #   category.
 #
+#   Offline legacy declarations: to test a media-buy-only seller without imposing
+#   list_creative_formats on it, the directive MAY instead use this object form:
+#     $build_assets_from_format:
+#       format_id: "$context.legacy_format_id"
+#       catalog: test_kit
+#   The wrapper MUST contain exactly those two keys, and the storyboard MUST
+#   require test_kit_format_catalog_runner. The captured value MUST be a valid
+#   complete FormatId. The operator supplies test_kit.creative_formats as an
+#   array of full core/format.json declarations obtained from their declaring
+#   agents. Each entry MUST include an explicit assets array (empty is allowed),
+#   valid slot declarations and unique asset identifiers. These are fixture
+#   inputs, not seller responses or seeds; runners MUST NOT overwrite discovery
+#   context or the seller's catalog with them, or fetch any reference implicitly.
+#
+#   Match the entire format_id by structural JSON equality after canonicalizing
+#   agent_url per the URL canonicalization rules. Preserve every other field,
+#   including width, height, duration_ms, pixel_ratio and extension parameters.
+#   Do not instantiate a template, override dimensions, or match by slug alone.
+#   An absent catalog or absent exact match is fixture_unavailable, naming
+#   "format declaration" as the unavailable slot and "format" as its type.
+#   Malformed catalogs, duplicate exact matches and malformed captured references
+#   are harness authoring errors, not fixture_unavailable. Unresolved context
+#   remains a prerequisite/harness error; it is not evidence of a catalog gap.
+#   Unsupported declared constraints are fixture_unavailable. The ordinary
+#   preflight and whole-storyboard termination rules below apply to this form.
+#
 #   Asset-fixture coverage exception: when the captured format is valid but the
 #   runner cannot populate a required slot from the test kit — including an
 #   unsupported asset type, an unknown text-slot semantic, or no image fixture

tests/lint-storyboard-sample-request-schema.test.cjs

@@ -427,6 +427,43 @@ test('static authoring excludes only valid runtime asset directives while wire r
   }
 });
 
+test('offline format directives require the runtime gate and an exact wrapper before static exclusion', async () => {
+  const { storyboard, steps } = cancellationCreativeAuthoringFixture();
+  const step = structuredClone(steps[0]);
+  const schema = loadSchema(step.schema_ref);
+  const directive = { format_id: '$context.legacy_format_id', catalog: 'test_kit' };
+  step.sample_request.creatives[0].assets = { $build_assets_from_format: directive };
+  const gated = { ...storyboard, requires: ['test_kit_format_catalog_runner'] };
+  const validate = async (source, candidate) => Promise.all(normalizeStoryboardSampleRequests(source, candidate, schema)
+    .map(payload => validateStep({ schemaRef: step.schema_ref, payload })));
+  assert.ok((await validate(gated, step)).every(result => result.ok));
+  assert.ok((await validate({ ...storyboard, requires: ['real_wire'] }, step)).every(result => !result.ok),
+    'an older runner must be gated before the wrapper can appear');
+  for (const requires of ['test_kit_format_catalog_runner', 'not_test_kit_format_catalog_runner', {}, null]) {
+    assert.ok((await validate({ ...storyboard, requires }, step)).every(result => !result.ok),
+      'only an exact member of a requirement array enables the wrapper');
+  }
+  assert.equal((await validateStep({ schemaRef: step.schema_ref, payload: step.sample_request })).ok, false,
+    'the wrapper is never a valid wire asset');
+  for (const malformed of [
+    { ...directive, extra: true },
+    { ...directive, catalog: 'remote' },
+    { ...directive, format_id: '$context.' },
+    { catalog: 'test_kit' },
+    [directive],
+  ]) {
+    const broken = structuredClone(step);
+    broken.sample_request.creatives[0].assets.$build_assets_from_format = malformed;
+    assert.ok((await validate(gated, broken)).every(result => !result.ok), JSON.stringify(malformed));
+  }
+  const brokenSibling = structuredClone(step);
+  brokenSibling.sample_request.creatives[0].assets.bad = 'not an asset';
+  assert.ok((await validate(gated, brokenSibling)).every(result => !result.ok));
+  const brokenAssignment = structuredClone(step);
+  brokenAssignment.sample_request.assignments[0].creative_id = 42;
+  assert.ok((await validate(gated, brokenAssignment)).every(result => !result.ok));
+});
+
 test('cancellation directives materialize real test-kit assets before strict request validation', async () => {
   const { expandCreativeAssetDirectives, findUnresolvedCreativeAssetDirectives, injectContext } = require('@adcp/sdk/testing');
   const { testKit, steps } = cancellationCreativeAuthoringFixture();