Promote to production: Optical File Transfer tool - #93
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Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
New Network tool (/tools/optical-transfer), inspired by Decimen Optical Transfer (MIT). Transfer a file between two devices using only a screen + camera — no network, no server, fully client-side. - LT fountain codec (fountain.lib): each QR frame is the XOR of a pseudo-random subset of file blocks, subset derived deterministically from the frame seq (shared mulberry32 PRNG + robust-soliton degree distribution). The receiver peels frames in any order until all blocks solve — tolerant of dropped/blurred frames, no ACKs or retransmission. Fully unit-tested (round-trips across sizes, out-of-order, lossy, duplicate frames). - Self-describing frame wire format (frame.lib): magic/version/session/k/size/ hash/seq + payload; packFile/unpackFile carry the filename through the codec; fnv1a integrity. Tested. - qr.lib: fast synchronous QR render (qrcode byte-mode matrix) + jsqr decode. - Island: role picker; Sender loops an animated QR at ~8fps; Receiver uses the camera, decodes frames, shows progress, verifies the checksum, downloads. - Registered optical-transfer (Network, ScanLine, beta). Spec: docs/superpowers/specs/2026-08-01-optical-transfer-design.md 564 tests · lint clean · build green. Codec fully tested; QR/camera pipeline is build + manual two-device smoke. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
feat(optical-transfer): beam files device-to-device via QR (no network)
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Ships the QR-beam optical file transfer (no-network, fountain-coded).
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