Initialize narratio Go module and CLI scaffold

internal/contracts/artifact.go

@@ -0,0 +1,7 @@
+package contracts
+
+// ArtifactResult is a placeholder generated artifact contract.
+type ArtifactResult struct {
+	Schema string `json:"schema"`
+	Path   string `json:"path"`
+}

internal/contracts/doc.go

@@ -0,0 +1,2 @@
+// Package contracts defines shared high-level artifact contracts.
+package contracts

internal/contracts/session.go

@@ -0,0 +1,7 @@
+package contracts
+
+// SessionManifest is a placeholder durable session-run contract.
+type SessionManifest struct {
+	Schema    string `json:"schema"`
+	SessionID string `json:"session_id"`
+}

internal/contracts/transcript.go

@@ -0,0 +1,19 @@
+package contracts
+
+// SpeakerTranscript is a placeholder transcription artifact contract.
+type SpeakerTranscript struct {
+	Schema    string `json:"schema"`
+	SessionID string `json:"session_id"`
+}
+
+// CanonicalTranscript is a placeholder merged transcript contract.
+type CanonicalTranscript struct {
+	Schema    string `json:"schema"`
+	SessionID string `json:"session_id"`
+}
+
+// ProcessedTranscript is a placeholder polished transcript contract.
+type ProcessedTranscript struct {
+	Schema    string `json:"schema"`
+	SessionID string `json:"session_id"`
+}