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wallet.js drops from 2,762 to 2,374 lines and now exposes two generic
seams instead of feature code:
- registerCoinLock()/lockedCoinIds(): features contribute coin ids that
spending and the balance treat as unavailable (gift reservations).
- loadFeatureState()/saveFeatureState(): namespaced per-wallet persisted
state.
src/features/gifts-wallet.js takes the whole gift engine — reservation
sets, gift records, coin selection, the SIGHASH_SINGLE/NONE PSBT
builder, the compact codec, claim building, nostr-locked gifts — as an
installGiftWallet(wallet) instance install plus standalone exports.
Swap storage/key helpers (loadSwaps/saveSwaps/swapNode/nextSwapIndex)
install from swap.js; ark state storage installs from the ark feature.
The silent-payment scan worker only embeds when the sp feature ships
(wallet.js already tolerated its absence).
Minimal profile: 412KB, down from 476KB (full: 578KB). All suites pass:
ark UI e2e, ArkManager crash-resume, gift lifecycle, minimal smoke.
SP's engine (scanning, BIP-352 signing) stays in wallet.js — extracting
it safely wants an SP e2e harness on this stack first.
Co-Authored-By: Claude Fable 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01QFAcD4V284DvYZZHP7Rxxy
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build.js swaps src/features/index.js for a generated module importing
only the enabled features (gifts,swaps,ark,sp — unset means all,
"none" means a plain on-chain wallet), so excluded feature code and
its network endpoints never enter the bundle. Minimal profile:
476KB vs 577KB, with the Ark/gRPC, Boltz, and MuSig2 code verifiably
absent. `bun run build:minimal` builds it.
tools/minimal-smoke.js proves the minimal profile end-to-end: no
receive-mode dropdown, no gift button, no swap/Ark/SP settings cards,
no page errors, and a plain on-chain receive still lands. The two
blessed profiles are full (everything, the existing e2e suites) and
minimal (this smoke test); other combos should work but aren't CI'd.
Gift and SP primitives still live inside wallet.js, so those bytes
remain in the minimal bundle for now — extracting them is the next
step if we want the core leaner still.
Co-Authored-By: Claude Fable 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01QFAcD4V284DvYZZHP7Rxxy
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The EC crypto (candidate derivation + full scan) now runs in a worker, off the
main thread, so even a large mainnet scan can't jank the UI at all. The worker is
bundled separately and embedded as base64 (single-file app), spawned from a Blob
URL; it holds the keys + per-tweak cache. If workers are unavailable or the bundle
is missing, scanning falls back to the main thread (still cached + yielding).
scanSilentPayments / _scanSpItems / _scanSpMempool now go through _spHitBlocks and
_spScanItems, which dispatch to the worker (or the fallback). +27KB to index.html
for the worker's crypto bundle.
Verified via CDP: worker runs keys/candidates/scan correctly in-browser; a real
reload + mainnet scan threw 0 exceptions and the SP address renders.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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Header, browser tab title, PWA name, and apple web-app title. Tribute prose
(explaining the name honors Hal Finney) left as-is.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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- Dark mode: theme variables + a footer "Dark mode/Light mode" toggle,
persisted and applied pre-paint via a small head script (defaults to the
OS preference). Hardcoded surfaces moved to CSS variables.
- Gift amount: the unit label is now the clickable sats/BTC toggle, and the
amount is parsed in the selected unit.
- Gifts can now span multiple coins: createGift selects several confirmed
coins (first input SIGHASH_SINGLE to lock the change, the rest
SIGHASH_NONE), so a gift larger than any single coin works. Claim/preview
sum all inputs and size the fee by input count. Verified end-to-end.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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Only English is bundled in index.html now; the other 19 languages are
emitted as dist/locales/<code>.json and fetched on demand when a visitor
actually uses one (via auto-detect, the picker, or ?lang=xx). This drops
index.html from ~511KB to ~318KB; a non-English visitor fetches just
their one ~8-10KB locale, which the service worker then caches for
offline use. t() falls back to English until a locale resolves.
- i18n.js keeps only en + a loadLocale() fetcher; locale data moved to
src/locales/*.json.
- build.js emits dist/locales/; dev.js serves /locales/<code>.json.
- Deploy hook publishes the locales/ subdir.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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- Name the app "Hal Wallet" (header, title, PWA manifest, package.json).
A nod to Hal Finney — just the name, no taglines or tributes.
- appTitle is a brand name now, so it's constant across locales (dropped
the translated overrides; they fall back to "Hal Wallet").
- Replace the native <select> caret with a custom chevron spaced off the
right border (the native one is crammed against the edge in Chrome).
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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Scan a Bitcoin address, a BIP21 URI (fills address + amount), or a
signed-transaction QR (opens a broadcast confirmation, then relays it)
from a viewfinder button on the Send form.
Decoder strategy keeps the main bundle small:
- Prefer the native BarcodeDetector (Chrome desktop/Android) — no lib.
- Otherwise lazy-load jsQR from a separate dist/jsqr.js, only when the
scanner is opened. jsQR stays out of index.html (~424 KB vs ~551 KB)
and off the initial load.
- The service worker precaches jsqr.js so offline scanning works for
installed PWAs on browsers without BarcodeDetector.
The scanner needs a camera + secure context, so it never shows on a
standalone file:// page; offline air-gapped signing is unaffected.
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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- Don't celebrate historical payments on import. receiveSeenIndex was
baselined to 0 before the scan ran, so when the scan advanced the
index every past payment looked new and flashed "payment received".
Leave it null until the post-scan ack logic baselines it.
- PWA: add a web manifest, ₿ icons (192/512 + maskable), theme/apple
meta tags, and a service worker that precaches the shell so the
installed app works offline. index.html stays self-contained; the
sidecar files just 404 harmlessly from file://. build.js emits them.
- Send page: drop btn-sm from the amount unit toggle so "sats" matches
the "Max" button size (both 16px).
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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