Archives - ZIP, 7Z, RAR and TAR/.tar.gz uploads are indexed in the background into archive_entries (7-Zip compiled to WASM in a worker thread; node-tar for tar). macOS/Windows clutter and paths that could escape the extraction folder are skipped. - Models inside archives are extracted once per archive to hash and geometry-fingerprint them, so duplicates are found inside packs too. Pictures, PDFs and readmes are listed but never matched. - New routes list an archive's entries and serve/convert a single entry, extracted on first use and cached under extracted/. Viewer - Model detail lists what's inside each archive with view/download links; opening an entry adds a viewer tab. - New 3D formats: FBX (with sibling textures), OBJ with its MTL and textures, STEP/STP via occt-import-js, and Rhino 3DM via rhino3dm — the WASM readers are served from node_modules, loaded on first use. - Pictures, PDFs and text files (jpg/png/gif/webp/bmp/svg, pdf, txt/md) can be uploaded and preview in the viewer; a model without an embedded 3MF preview uses its first picture as the card thumbnail. - Inline file responses send nosniff, and SVGs are sandboxed. - GLB conversions write to a temp file and rename, so a half-written preview is never served; a later tab can't be overdrawn by a slow load. - Better 3MF card image: the project thumbnail or plate 1 render, not a slicer pick map. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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