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memoized (make() runs eight mask trials over a version-20 grid — 30ms+ per call on a phone, paid on EVERY render of the receive pane), the header's unread count reuses its answer behind a revision counter bumped only when messages or read-marks actually change, and ark's history list rebuilds at most every 1.5s instead of per repaint
Co-Authored-By: Claude Fable 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01MrkLsNScXe9b6BviUSdmMr
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Gift links now carry a compact binary encoding of just the claim-essential data
(presigned inputs + the committed change output) instead of a full PSBT (~25%
fewer bytes), base32-encoded and served at an uppercase /g/<code> path. The QR
renders the uppercase URL in the QR alphanumeric mode (5.5 bits/char vs byte
mode's 8), so the grid drops from ~73 to ~53 modules — much easier to scan.
- wallet: _encodeCompactGift/_decodeCompactGift + _giftTx dispatcher; legacy
base64url-PSBT links still claim (auto-detected by a magic byte). Verified
round-trip + claim-byte-identical across 1/2/3-input and whole-balance gifts,
against the real exported preview/claim/outpoint functions.
- app: giftUrl uses /g/<code>; opener parses /g/ (and legacy #gift=); QR uses
uppercase + Alphanumeric mode (qrSvg gains a mode option w/ byte fallback).
- nginx already SPA-routes /g/*; the SW serves the shell for the new path.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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Replace the SvelteKit/daisyUI prototype with a vanilla JS + hand-rolled CSS
app that Bun bundles (code + scure/noble crypto + QR + CSS) into one
self-contained dist/index.html runnable offline from file://.
Wallet core (src/wallet.js):
- BIP84 native-segwit HD wallet from BIP39 seed (+optional passphrase)
- gap-limit scan of receive/change chains, aggregate balance, tx history
- fresh receive/change addresses; signs with witnessUtxo only (enables
offline signing with no prev-tx fetch)
- coin selection + fee estimation via btc-signer selectUTXO; send-max;
manual coin control
- offline JSON snapshot export/import (keyless) + signed-tx hex/QR export
- realtime mempool.space WebSocket: track-addresses -> debounced auto
refresh of balances/history (no polling); live status badge
UI (src/app.js): clean light paper-wallet; create (with optional, skippable
backup verification) / import flow; receive (QR) / send / history / coins /
tools tabs; clickable logo returns home.
API (src/api.js): mempool.space wrapper with retry/backoff for scan-burst
rate limiting; single network choke-point for offline enforcement.
Verified: BIP84 spec vectors, build/sign/parse for auto/max/manual flows,
snapshot roundtrip, live scan + WebSocket, headless-Chrome UI smoke tests.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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