Initialize narratio Go module and CLI scaffold

internal/config/config.go

@@ -0,0 +1,15 @@
+package config
+
+// Config contains loaded pipeline and session configuration.
+type Config struct {
+	Pipeline *Pipeline
+	Session  *Session
+}
+
+// Pipeline represents durable pipeline-level settings.
+type Pipeline struct{}
+
+// Session represents per-session inputs and metadata.
+type Session struct {
+	SessionID string
+}

internal/config/doc.go

@@ -0,0 +1,2 @@
+// Package config contains pipeline and session configuration contracts.
+package config

internal/config/load.go

@@ -0,0 +1,8 @@
+package config
+
+import "fmt"
+
+// Load is a placeholder for strict pipeline/session config decoding.
+func Load(_ string, _ string) (*Config, error) {
+	return nil, fmt.Errorf("config load: not yet implemented")
+}

internal/config/validate.go

@@ -0,0 +1,8 @@
+package config
+
+import "fmt"
+
+// Validate is a placeholder for configuration validation logic.
+func Validate(_ *Config) error {
+	return fmt.Errorf("config validation: not yet implemented")
+}