Add validator chain provenance

internal/framework/pipeline/profile_test.go

@@ -110,6 +110,78 @@ func TestResolvePipelineAppliesDefaults(t *testing.T) {
 	}
 }
 
+func TestResolvePipelineRecordsValidatorChains(t *testing.T) {
+	catalog := newProfileCatalog(t)
+	if err := catalog.ValidatorChains.Register(ValidatorChainMapping{
+		Stage:      StageExtract,
+		Module:     "event-extractor",
+		Validators: []ModuleBinding{Binding("grounded")},
+	}); err != nil {
+		t.Fatalf("register validator chain: %v", err)
+	}
+
+	resolved, err := ResolvePipeline(PipelineProfile{
+		ID:    "validated",
+		Input: Binding("text"),
+		Artifacts: map[string]ArtifactLaneProfile{
+			"events": {Extract: Binding("event-extractor")},
+		},
+	}, ResolveOptions{}, catalog)
+	if err != nil {
+		t.Fatalf("ResolvePipeline() error = %v, want nil", err)
+	}
+
+	if len(resolved.ValidatorChains) != 4 {
+		t.Fatalf("len(ValidatorChains) = %d, want chunk plus lane extract/merge/normalize", len(resolved.ValidatorChains))
+	}
+	extractChain := findResolvedValidatorChain(resolved.ValidatorChains, StageExtract, "events", "event-extractor")
+	if extractChain == nil {
+		t.Fatal("extract validator chain not found")
+	}
+	if len(extractChain.Validators) != 1 {
+		t.Fatalf("extract validators = %#v, want one validator", extractChain.Validators)
+	}
+	if extractChain.Validators[0].Binding.Module != "grounded" {
+		t.Fatalf("extract validator key = %q, want grounded", extractChain.Validators[0].Binding.Module)
+	}
+	if extractChain.Validators[0].ExecutionClass != contracts.ExecutionClassDeterministic {
+		t.Fatalf("extract validator execution class = %q, want deterministic", extractChain.Validators[0].ExecutionClass)
+	}
+
+	chunkChain := findResolvedValidatorChain(resolved.ValidatorChains, StageChunk, "", DefaultChunkModule)
+	if chunkChain == nil {
+		t.Fatal("chunk validator chain not found")
+	}
+	if len(chunkChain.Validators) != 0 {
+		t.Fatalf("chunk validators = %#v, want explicit empty chain", chunkChain.Validators)
+	}
+}
+
+func TestResolvePipelineRejectsUnknownDefaultValidator(t *testing.T) {
+	catalog := newProfileCatalog(t)
+	if err := catalog.ValidatorChains.Register(ValidatorChainMapping{
+		Stage:      StageNormalize,
+		Module:     DefaultNormalizeModule,
+		Validators: []ModuleBinding{Binding("missing-validator")},
+	}); err != nil {
+		t.Fatalf("register validator chain: %v", err)
+	}
+
+	_, err := ResolvePipeline(PipelineProfile{
+		ID:    "invalid-chain",
+		Input: Binding("text"),
+		Artifacts: map[string]ArtifactLaneProfile{
+			"events": {Extract: Binding("event-extractor")},
+		},
+	}, ResolveOptions{}, catalog)
+	if err == nil {
+		t.Fatal("ResolvePipeline() error = nil, want unknown validator error")
+	}
+	if !strings.Contains(err.Error(), "missing-validator") {
+		t.Fatalf("ResolvePipeline() error = %q, want missing validator context", err.Error())
+	}
+}
+
 func TestResolvePipelineSelectsOnlyRequestedLanes(t *testing.T) {
 	profile := multiLaneProfile()
 	resolved, err := ResolvePipeline(profile, ResolveOptions{Only: []string{" summaries ", "events", "summaries"}}, newProfileCatalog(t))
@@ -955,6 +1027,15 @@ func assertBindingSource(t *testing.T, bindings []ReferenceBinding, slotName str
 	t.Fatalf("binding %q not found in %#v", slotName, bindings)
 }
 
+func findResolvedValidatorChain(chains []ResolvedValidatorChain, stage ModuleStage, laneID string, module string) *ResolvedValidatorChain {
+	for i := range chains {
+		if chains[i].Stage == stage && chains[i].LaneID == laneID && chains[i].ModuleKey == module {
+			return &chains[i]
+		}
+	}
+	return nil
+}
+
 func newProfileCatalog(t *testing.T) ModuleCatalog {
 	t.Helper()
 
@@ -994,13 +1075,14 @@ func newProfileCatalogWithOverrides(t *testing.T, overrides ...ModuleSpec) Modul
 
 func emptyProfileCatalog() ModuleCatalog {
 	return ModuleCatalog{
-		Inputs:      NewInputAdapterRegistry(),
-		Chunkers:    NewChunkerRegistry(),
-		Extractors:  NewExtractorRegistry(),
-		Mergers:     NewMergerRegistry(),
-		Normalizers: NewNormalizerRegistry(),
-		Validators:  NewValidatorRegistry(),
-		Outputs:     NewOutputEncoderRegistry(),
+		Inputs:          NewInputAdapterRegistry(),
+		Chunkers:        NewChunkerRegistry(),
+		Extractors:      NewExtractorRegistry(),
+		Mergers:         NewMergerRegistry(),
+		Normalizers:     NewNormalizerRegistry(),
+		Validators:      NewValidatorRegistry(),
+		ValidatorChains: NewValidatorChainRegistry(),
+		Outputs:         NewOutputEncoderRegistry(),
 	}
 }
 
@@ -1043,7 +1125,8 @@ func registerProfileSpecs(t *testing.T, catalog ModuleCatalog, specs ...ModuleSp
 				t.Fatalf("register normalizer spec %#v: %v", spec, err)
 			}
 		case StageValidate:
-			if err := catalog.Validators.RegisterWithSpec(spec, profileValidatorConstructor(spec.Key)); err != nil {
+			validatorSpec := ValidatorSpec{Key: spec.Key, ExecutionClass: contracts.ExecutionClassDeterministic}
+			if err := catalog.Validators.RegisterWithSpec(validatorSpec, profileValidatorConstructor(spec.Key)); err != nil {
 				t.Fatalf("register validator spec %#v: %v", spec, err)
 			}
 		case StageOutput: