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Add QR payload decompression for pairing flow#7
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filinvadim merged 1 commit intomainfrom Apr 26, 2026
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The fat node now ships the full AuthNodeInfo Brotli-compressed and Base45-encoded so the QR carries every dial field instead of the trimmed subset the previous frontend sent. Decode the scanned (or pasted) payload through QrPayloadCodec before handing it to the JSON parser. Plain-JSON input is passed through unchanged so legacy desktops and manual paste flows still validate. Pulls in org.brotli:dec for the decompression step; the Base45 codec is inlined to avoid another transitive on the transport module.
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Summary
Adds support for decoding Brotli-compressed, Base45-encoded QR payloads in the pairing flow. The fat node now ships pairing QR codes with compression to fit more data within QR alphanumeric mode constraints.
Key Changes
QrPayloadCodecclass: Decodes QR payloads that are Brotli-compressed and Base45-encoded per RFC 9285, while maintaining backward compatibility with plain JSON payloads (legacy/manual paste scenarios)Base45implementation: RFC 9285 Base45 codec (~50 lines) implemented directly to avoid adding a transitive dependency for minimal functionalityAuthNodeInfoValidator: Modified to decompress payloads viaQrPayloadCodec.decode()before JSON parsing, with proper error handling for malformed payloadsorg.brotli:dec) for decompressionImplementation Details
{0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ $%*+-./:) is a strict subset of QR alphanumeric mode, enabling efficient packing of 5.5 bits per character vs. 8 bits in byte modehttps://claude.ai/code/session_011638L4REv78jEVUjQsniPz