[seveibar]

Nonparallel PCB bends and CAD mounts inside bend zones currently abort renderUntilSettled() or 3D export. Emit pcb_placement_error records and preserve flat placements for these declared folding limitations so PCB, schematic, and 3D output remain available.

Board construction uses flex-utils' explicit folding result. CAD placement handles only PcbFoldError; unexpected failures propagate. An unsupported board keeps its CAD flat, while an invalid rigid mount stays flat and other valid mounts still fold. The shared helper covers footprint models, bounding boxes, and child <cadmodel> elements. Surface deformation, rigid meshes, and stiffener fallback remain in the shared exporter.

The standard toMatch3dSnapshot/PoppyGL regressions enable the exporter's showErrors option. GLTF stores full Circuit JSON messages in renderer-neutral scene metadata. The snapshot matcher forwards the exporter's adapter options to published poppygl@0.0.29, which draws the messages through its existing debugPoints labels. The adapter uses the current camera to place readable rows on screen, including errors without coordinates. Circuit geometry, camera and bounds are preserved. The PCB snapshot enables showBendLines and shows both finite bend segments with 0.5 mm BEND LINE labels. The underside close-up still checks the flat stiffener directly.

Uses published @tscircuit/flex-utils@0.0.7, poppygl@0.0.29, circuit-json-to-gltf@0.0.139, and circuit-to-svg@0.0.437. GLTF #231 and SVG #803 are merged and released. Both rendering options default to false.

Addresses items 2 and the rendering exception in item 3 of tscircuit#5277. Bend-zone DRC is covered separately by checks #370; independent nonparallel physical folds remain unsupported.

The released SVG renderer also includes upstream SVG #795 and SVG #796. Three existing schematic snapshots are refreshed with the already-reviewed paint order and selected-sheet framing; symbol positions and geometry are unchanged. The final published-version update adds only the bend labels to the PCB baseline; the 3D and schematic baselines are unchanged from the tested previews.

Validation: all 10 PCB-flex tests, 10 adjacent CAD tests across seven files, and all three affected schematic regressions pass (23 tests, 230 assertions). TypeScript, build, formatting, and installation with scripts disabled pass. Repeated settled renders preserve Circuit JSON and do not duplicate diagnostics. New PCB and 3D snapshots were visually inspected. The unexpected-error regression verifies that ordinary failures propagate. Actual GLB messages are rendered through the published PoppyGL API.

Full CI passes on the published renderer versions and refreshed PCB snapshot: all ten test shards, TypeScript, formatting, dist smoke tests, package preview, continuous releases, and Vercel.

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Project	Deployment	Actions	Updated
tscircuit-core-benchmarks	Ready	Preview	Oct 2, 2026 3:17am UTC

[tscircuitbot]

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PR Rating: ⭐⭐
Impact: Minor

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