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NOTICE — Attribution & Provenance

This file summarizes attribution and provenance for ChestnutLabs/gcode-preview. It complements, and does not replace, the LICENSE file and the full Upstream, Fork, License & Contribution Policy.

Upstream origin

  • This repository is a public GitHub fork of xyz-tools/gcode-preview (project identity remcoder/gcode-preview; npm package gcode-preview).
  • Chestnut founding baseline: branch develop at commit 15375e56129f5a57aebc099ed7bfb5a092dcfb9e (2026-06-08).
  • The inherited Git history and the upstream fork relationship are preserved. Chestnut Labs maintains its own roadmap, governance, release cadence, and package APIs.

Copyright

  • Inherited code: Copyright (c) 2017–2025 Remco Veldkamp and the xyz-tools/gcode-preview contributors, licensed under the MIT License (see LICENSE).
  • Chestnut Labs additions and modifications: Copyright (c) 2026 Chestnut Labs, also under the MIT License.

The upstream copyright notice and MIT permission notice are retained in LICENSE and must not be removed. Chestnut notices are added alongside — never in place of — upstream notices.

License

MIT for both the inherited fork and Chestnut Labs additions, unless a later, explicit legal/governance decision changes the license for an independently separable new package. See the fork/license policy for the full rationale, including how an MIT package may be consumed by a GPL-3.0 application (e.g., AnyBridge) without altering the package's MIT notice obligations.

Derived vs. independently replaced code

Chestnut Labs does not claim a clean-room implementation. Subsystem provenance (inherited / modified / replaced / original) is tracked in docs/UPSTREAM_PROVENANCE.md. Replacing every line of an inherited file does not by itself establish clean-room status; the ledger exists for honesty, maintenance, and license review.

Third-party code

Bundled and dependency notices are tracked in THIRD_PARTY_NOTICES.md. Reference implementations studied for behavior (Sindarius/Mainsail, Fluidd, PrusaSlicer/libvgcode, BambuBuddy, and others) are not incorporated as source unless their license is compatible and the incorporation is recorded per policy.