**2 issues found** across 21 files Confidence score: **3/5** - Moderate merge risk: there is a concrete behavior bug in `editor/src/messages/dialog/new_document_dialog/new_document_dialog_message_handler.rs` (severity 6/10, high confidence) where finite zero-dimension documents can be misrouted into infinite-canvas background initialization. - `node-graph/nodes/gstd/src/render_node.rs` has a rendering-stability risk (severity 5/10) because the Vello checkerboard path divides by `viewport_zoom` without a positive-value guard, so zero zoom can produce invalid Affine scale values (infinite/NaN). - These are specific, user-facing edge-case regressions rather than broad architectural problems, so this looks fixable but carries some real runtime risk until patched. - Pay close attention to `editor/src/messages/dialog/new_document_dialog/new_document_dialog_message_handler.rs` and `node-graph/nodes/gstd/src/render_node.rs` - document initialization routing and zero-zoom rendering guards need validation.

Prompt for AI agents (unresolved issues)

```text Check if these issues are valid — if so, understand the root cause of each and fix them. If appropriate, use sub-agents to investigate and fix each issue separately. P2: Finite zero-dimension documents are incorrectly routed through the infinite-canvas background initialization branch. P2: Vello checkerboard path divides by viewport_zoom without ensuring it’s positive, unlike the SVG branch. A zero zoom would yield an infinite/NaN Affine scale and can corrupt rendering; add the same `viewport_zoom > 0.` guard here. ```

_{Reply with feedback, questions, or to request a fix. Tag `@cubic-dev-ai` to re-run a review.}