SPIKE browser geometry bundle

Built from the owner-provided subset in engine/spike-source and adapters in engine/spike. This supplied owner-authored subset is MPL-2.0; see LICENSE and LICENSING.md. Other SPIKE software is not relicensed. Matching source: https://github.com/wayri/kicad-webview/tree/v0.6.0 . Original extraction provenance and valid earlier grants remain intact.

boardParser.ts: 6b9cfad531123aed7cb61518bf9c90c3a29df588ff5932abe5cd152945d19bf6 numericRange.ts: a64c4bf094de8ea734f04cb05eabfe9e8dbe7c6ce023649328c7528771854dc7 layerPalette.ts: 8ea2f855f5371be2a0ba162e4b7ac35aa37d7c0fb3b4a5c88a2f1e13eac89038 trackGeometry.ts: 62bb3eb5c6706382e0985494aecffe478988cf587e9ef534f5127f4b9071f7cc viewportScenePolicy.ts: ce051060af0a65f3445adb51c686abdadfe0c4df6724c9d124749f2f60980cc0

Includes Three.js 0.171.0 (MIT; THREE-LICENSE) and fzstd 0.1.1 (MIT; fzstd/LICENSE). Original extraction provenance is retained in SOURCE-PROVENANCE.json.