minimal working version of backend and cli

backend/internal/glue/branches.go

@@ -5,8 +5,20 @@ import (
 	"mind/internal/models"
 )
 
-type ForkReq struct { ConversationID int64; Name string; HeadNodeID int64 }
+type ForkReq struct {
+    ConversationID int64  `json:"conversation_id"`
+    Name           string `json:"name"`
+    HeadNodeID     int64  `json:"head_node_id"`
+}
 
 func (g *Glue) ForkBranch(ctx context.Context, fr ForkReq) (models.Branch, error) {
 	return g.repo.CreateOrGetBranch(ctx, fr.ConversationID, fr.Name, fr.HeadNodeID)
 }
+
+func (g *Glue) DeleteBranch(ctx context.Context, conversationID int64, name string) error {
+    return g.repo.DeleteBranch(ctx, conversationID, name)
+}
+
+func (g *Glue) ListBranches(ctx context.Context, conversationID int64) ([]models.Branch, error) {
+	return g.repo.ListBranches(ctx, conversationID)
+}