Add Seriatim input module skeleton

internal/modules/input/seriatim/adapter.go

@@ -0,0 +1,54 @@
+package seriatim
+
+import (
+	"context"
+	"fmt"
+
+	"gitea.maximumdirect.net/eric/notarius/internal/core/source"
+	"gitea.maximumdirect.net/eric/notarius/internal/framework/contracts"
+	"gitea.maximumdirect.net/eric/notarius/internal/framework/pipeline"
+)
+
+const Key = "seriatim"
+
+const (
+	DocumentKind = "transcript"
+	UnitKind     = "transcript_segment"
+	Format       = "application/vnd.seriatim.minimal+json"
+)
+
+var providedCapabilities = []string{
+	"source.transcript",
+	"transcript.speaker",
+	"transcript.timestamps",
+}
+
+var _ contracts.InputAdapter = (*Adapter)(nil)
+
+type Adapter struct{}
+
+func New() *Adapter {
+	return &Adapter{}
+}
+
+func (a *Adapter) Key() string {
+	return Key
+}
+
+func (a *Adapter) Parse(ctx context.Context, req contracts.ParseRequest) (*source.SourceDocument, error) {
+	return nil, fmt.Errorf("seriatim input: source document parsing is not implemented")
+}
+
+func ModuleSpec() pipeline.ModuleSpec {
+	return pipeline.ModuleSpec{
+		Key:      Key,
+		Stage:    pipeline.StageInput,
+		Provides: append([]string(nil), providedCapabilities...),
+	}
+}
+
+func Register(registry *pipeline.InputAdapterRegistry) error {
+	return registry.RegisterWithSpec(ModuleSpec(), func() (contracts.InputAdapter, error) {
+		return New(), nil
+	})
+}