Store workflow definitions as table rows and drop YAML

internal/workflow/parse.go

@@ -0,0 +1,20 @@
+package workflow
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+
+	"g.fc.run/ai/byre/internal/api"
+)
+
+func Parse(data []byte) (api.WorkflowDefinition, error) {
+	def := api.WorkflowDefinition{}
+	dec := json.NewDecoder(bytes.NewReader(data))
+	dec.DisallowUnknownFields()
+	err := dec.Decode(&def)
+	if err != nil {
+		return api.WorkflowDefinition{}, fmt.Errorf("%w: %v", ErrInvalid, err)
+	}
+	return def, Validate(def)
+}