Clean up MVP output handling

internal/framework/pipeline/runner_test.go

@@ -29,13 +29,11 @@ func TestNewAndDataTypes(t *testing.T) {
 		Metadata:  map[string]any{"request": "test"},
 	}
 	output := RunOutput{
-		Manifest:      artifacts.RunManifest{PipelineID: "pipeline-1"},
-		Approved:      []artifacts.Artifact{{ExtractorKey: "extract-alpha"}},
-		Rejected:      []artifacts.RejectedArtifact{{ValidatorName: "validator"}},
-		Warnings:      []contracts.Warning{{ReasonCode: "note", Message: "message"}},
-		OutputFiles:   []contracts.OutputFile{{Name: "artifacts/generic.json", ContentType: "application/json", Bytes: []byte(`{}`)}},
-		EncodedOutput: []byte(`{}`),
-		ContentType:   "application/json",
+		Manifest:    artifacts.RunManifest{PipelineID: "pipeline-1"},
+		Approved:    []artifacts.Artifact{{ExtractorKey: "extract-alpha"}},
+		Rejected:    []artifacts.RejectedArtifact{{ValidatorName: "validator"}},
+		Warnings:    []contracts.Warning{{ReasonCode: "note", Message: "message"}},
+		OutputFiles: []contracts.OutputFile{{Name: "artifacts/generic.json", ContentType: "application/json", Bytes: []byte(`{}`)}},
 	}
 
 	if input.Pipeline.ID != "pipeline-1" || input.SourceID != "source-1" {
@@ -1140,13 +1138,11 @@ func (validator *runnerValidator) Validate(ctx context.Context, req contracts.Va
 }
 
 type runnerOutputEncoder struct {
-	key         string
-	files       []contracts.OutputFile
-	bytes       []byte
-	contentType string
-	warnings    []contracts.Warning
-	err         error
-	requests    []contracts.OutputRequest
+	key      string
+	files    []contracts.OutputFile
+	warnings []contracts.Warning
+	err      error
+	requests []contracts.OutputRequest
 }
 
 func (encoder *runnerOutputEncoder) Key() string {
@@ -1156,10 +1152,8 @@ func (encoder *runnerOutputEncoder) Key() string {
 func (encoder *runnerOutputEncoder) Encode(ctx context.Context, req contracts.OutputRequest) (contracts.OutputResult, error) {
 	encoder.requests = append(encoder.requests, req)
 	return contracts.OutputResult{
-		Files:       encoder.files,
-		Bytes:       encoder.bytes,
-		ContentType: encoder.contentType,
-		Warnings:    encoder.warnings,
+		Files:    encoder.files,
+		Warnings: encoder.warnings,
 	}, encoder.err
 }