# Interview Transcript — Sprint 9a: build_scene

## Q1: Undo/Redo Pattern
**Q:** The existing _op_add_child uses DEFERRED undo/redo (add_do_method, add_do_property) — no immediate add_child. The spec proposes immediate add_child + undo registration. Which pattern should build_scene follow?

**A:** Match existing deferred pattern. Use add_do_method/add_do_property like _op_add_child does. Properties set via ur.add_do_property() instead of directly.

## Q2: Error Mode
**Q:** Should build_scene be atomic (all-or-nothing) or allow partial success?

**A:** Partial success. Create what we can, report errors for failed nodes. Single undo action still covers all created nodes.

## Q3: Node Limit
**Q:** What's the maximum number of nodes a single build_scene call should support?

**A:** 256 nodes. Supports up to 16x16 grid.

## Q4: Prompt File
**Q:** Where should the Creation Workflow section be added?

**A:** `godot_development_prompt_v2.md` — the existing v2 prompt file.

## Q5: 2D Support
**Q:** Should build_scene support 2D nodes alongside 3D?

**A:** Both 2D and 3D. Auto-detect based on node type. Node3D gets Vector3, Node2D/Control gets Vector2.

## Q6: Line Endpoint
**Q:** For line mode, should the endpoint be included as a node position?

**A:** Include endpoint. Place a node at the last point too.
