Add runtime prompt values to module outputs

internal/module/module.go

@@ -38,6 +38,7 @@ type Output struct {
 	ID          ID     `json:"id"`
 	StanzaName  string `json:"stanzaName"`
 	Value       any    `json:"value"`
+	PromptValue any    `json:"-" yaml:"-"`
 }
 
 type Snapshot struct {
@@ -45,6 +46,13 @@ type Snapshot struct {
 	Outputs       []Output `json:"outputs"`
 }
 
+func (o Output) DataPackageValue() any {
+	if o.PromptValue != nil {
+		return o.PromptValue
+	}
+	return o.Value
+}
+
 func NewSnapshot(outputs []Output) (Snapshot, error) {
 	snapshot := Snapshot{
 		SchemaVersion: SnapshotSchemaVersion,

internal/module/module_test.go

@@ -13,7 +13,12 @@ type testStanza struct {
 
 func TestSnapshotPreservesOutputOrderAndJSON(t *testing.T) {
 	snapshot, err := NewSnapshot([]Output{
-		{ID: Metadata, StanzaName: "metadata", Value: testStanza{Message: "first", Count: 1}},
+		{
+			ID:          Metadata,
+			StanzaName:  "metadata",
+			Value:       testStanza{Message: "first", Count: 1},
+			PromptValue: testStanza{Message: "prompt-only", Count: 10},
+		},
 		{ID: AlertDigest, StanzaName: "alert_digest", Value: testStanza{Message: "second", Count: 2}},
 	})
 	if err != nil {
@@ -35,6 +40,26 @@ func TestSnapshotPreservesOutputOrderAndJSON(t *testing.T) {
 	if got != want {
 		t.Fatalf("json = %s, want %s", got, want)
 	}
+	if strings.Contains(got, "PromptValue") || strings.Contains(got, "promptValue") || strings.Contains(got, "prompt-only") {
+		t.Fatalf("json includes runtime-only prompt value: %s", got)
+	}
+}
+
+func TestOutputDataPackageValue(t *testing.T) {
+	output := Output{
+		ID:          Metadata,
+		StanzaName:  "metadata",
+		Value:       testStanza{Message: "rich", Count: 1},
+		PromptValue: testStanza{Message: "prompt", Count: 2},
+	}
+	if got := output.DataPackageValue(); got != output.PromptValue {
+		t.Fatalf("DataPackageValue() = %#v, want prompt value", got)
+	}
+
+	output.PromptValue = nil
+	if got := output.DataPackageValue(); got != output.Value {
+		t.Fatalf("DataPackageValue() = %#v, want rich value fallback", got)
+	}
 }
 
 func TestSnapshotRejectsDuplicateOutputs(t *testing.T) {
@@ -57,7 +82,12 @@ func TestSnapshotRejectsDuplicateOutputs(t *testing.T) {
 
 func TestStanzaValueDecodesTypedOutput(t *testing.T) {
 	snapshot, err := NewSnapshot([]Output{
-		{ID: Metadata, StanzaName: "metadata", Value: testStanza{Message: "available", Count: 3}},
+		{
+			ID:          Metadata,
+			StanzaName:  "metadata",
+			Value:       testStanza{Message: "available", Count: 3},
+			PromptValue: testStanza{Message: "prompt-only", Count: 99},
+		},
 	})
 	if err != nil {
 		t.Fatalf("NewSnapshot() error = %v", err)

internal/state/filesystem_test.go

@@ -114,7 +114,12 @@ func TestSaveArtifactsAndMetadataRoundTrip(t *testing.T) {
 	store := newTestStore(t)
 	resolved := resolveDailyAt(t, "2026-05-29T05:00:00-05:00")
 	briefingMetadata := stateBriefingMetadata(resolved)
-	snapshot, err := module.NewSnapshot([]module.Output{{ID: module.Metadata, StanzaName: "metadata", Value: map[string]string{"run_id": resolved.Metadata().RunID}}})
+	snapshot, err := module.NewSnapshot([]module.Output{{
+		ID:          module.Metadata,
+		StanzaName:  "metadata",
+		Value:       map[string]string{"run_id": resolved.Metadata().RunID},
+		PromptValue: map[string]string{"prompt_run_id": resolved.Metadata().RunID},
+	}})
 	if err != nil {
 		t.Fatalf("NewSnapshot() error = %v", err)
 	}
@@ -220,6 +225,16 @@ func TestSaveArtifactsAndMetadataRoundTrip(t *testing.T) {
 	if loadedSnapshot.SchemaVersion != module.SnapshotSchemaVersion || len(loadedSnapshot.Outputs) != 1 {
 		t.Fatalf("loaded module snapshot = %#v, want one metadata output", loadedSnapshot)
 	}
+	if loadedSnapshot.Outputs[0].PromptValue != nil {
+		t.Fatalf("loaded module snapshot PromptValue = %#v, want omitted runtime value", loadedSnapshot.Outputs[0].PromptValue)
+	}
+	snapshotData, err := os.ReadFile(moduleSnapshotPath)
+	if err != nil {
+		t.Fatalf("read module snapshot: %v", err)
+	}
+	if strings.Contains(string(snapshotData), "prompt_run_id") || strings.Contains(string(snapshotData), "promptValue") || strings.Contains(string(snapshotData), "PromptValue") {
+		t.Fatalf("module snapshot JSON includes runtime-only prompt value:\n%s", string(snapshotData))
+	}
 	loadedDataPackage, err := store.LoadDataPackage(context.Background(), dataPackagePath)
 	if err != nil {
 		t.Fatalf("LoadDataPackage() error = %v", err)