Commit Graph
1065 Commits
Author SHA1 Message Date
DanSandClaude Opus 4.8 750771ebfb feat(network): give the "no peers" banner an honest detail and a Restart action
The no-peers banner headline ("Connected, but no network peers") was followed
by a detail line that just repeated connection_status ("Connected"/"Peers: 0"),
reading as a contradiction, and it offered no action at the exact moment the
wallet looks synced but is silently stalled at a stale height.

- NoPeers now clears the passthrough detail; App renders a translated,
  actionable hint (node_banner_no_peers_detail) for this reason instead.
- When the embedded daemon is the node, offer a Restart button (re-triggers
  peer discovery via the -addnode seeds); an external node stays action-less
  since it is the user's own to restart.
- Update + extend the evaluator unit tests (external = no action/empty detail;
  embedded = RestartNode).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-10-17 16:33:17 -05:00
DanSandClaude Opus 4.8 a99f71a0cd fix(ux): land quick-win UX audit fixes across settings, exports, toasts, nav
Batch of safe, isolated fixes from the 10-surface UX audit:

- settings: Auto-shield / Save-z-transactions toggles now persist on change
  (they discarded CB()'s return and relied on a Save button that only renders
  on the About tab, so the choice was silently lost on relaunch).
- exports: show the resolved Platform::getConfigDir() instead of a hardcoded
  ~/.config path (wrong on Windows/macOS) in both the all-keys and CSV
  dialogs; all-keys also reveals the file path on a partial export.
- notifications: error/warning toasts last 9s/7s (were 4s/3.5s) so failures
  are readable.
- qr popup / tx-details: copy-to-clipboard now confirms with a toast.
- about: Escape-to-close + readable heading contrast via OnSurfaceMedium().
- sidebar: suppress single-key nav (J/K/arrows/[) while an overlay dialog or
  ImGui popup is open, so it no longer switches the tab behind a modal.
- i18n: strip the stale hardcoded path out of file_save_location in i18n.cpp
  and all eight res/lang/*.json locales (additive, one key each).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-10-17 16:27:58 -05:00
DanSandClaude Opus 4.8 9ff64b1846 perf(history): band the full sent-sweep so it doesn't hold cs_main for minutes
A full z_listsentbyaddress holds the daemon's cs_main for the whole sweep --
~140 s on a large wallet on a daemon without the sent-history decrypt cache --
which starves block connection and makes every other RPC (getinfo, balances)
wait, so the node looks "busy". This runs the full sweep in depth bands so no
single call holds the lock for long.

- The full case now covers [0, tip] in bands: z_listsentbyaddress(z, minconf=a,
  filter-2, maxDepth=b) returns exactly depth [a, b]. Newest band first (its
  minconf=0 includes the mempool); results dedupe by txid across the overlap.
- Each band is a separate call, so cs_main is held only ~5 s at a time and the
  node stays responsive between bands (block connection isn't starved, the busy
  canary answers). Total CPU is unchanged -- just not in one long lock.
- sentSweepNextBandSize adapts the next band toward ~5 s: grows up to 4x in
  sparse depth (empty regions covered fast), shrinks to 1/2x in dense depth.
- W advances only after every band succeeds; a mid-sweep failure re-sweeps
  rather than marking a partial result. The windowed sweep is unchanged.
- Each band also fits the 120 s timeout on its own, so the seed completes even
  on a daemon where the single whole-wallet call used to time out.

This removes the ~2.5 min hang on the first-run seed, the weekly safety-net
re-sweep, and any invalidation. Multi-band + band-sizing covered by tests.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-10-17 14:42:16 -05:00
DanSandClaude Opus 4.8 b47d55a3d0 feat(balance): show total period-earnings in every layout
#4 wired the total-earnings figure into the compact hero and the classic
layout only. This adds it to the remaining layouts in each one's native
style: donut / shield / timeline / minimal beside the USD line, consolidated
to the right of the USD, vertical-stack left of the Total row's amount, and
vertical-2x2 as a second line under the Total cell (dashboard and two-row
already show it via RenderCompactHero). All go through FormatTotalEarnings,
which returns nothing unless the global earnings toggle is on, so every
layout's default appearance is unchanged.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-10-16 20:02:04 -05:00
DanSandClaude Opus 4.8 07437fb447 perf(history): weekly safety-net full re-sweep for sent history
Persisting the sent-sweep watermark means a relaunch runs a windowed sweep,
which can't see a change made outside the GUI (a Console z_importviewingkey,
an external same-seed restore) that adds an old send below the window. This
adds a periodic full re-sweep so that case is still caught within ~7 days.

- sentSweepSafetyNetDue(now, lastFull) = lastFull > 0 && now - lastFull > 7d
  (a wallet that has never full-swept doesn't trigger one; the seeding sweep
  records the time). lastFullTime / lastFullHeight ride in the sent_sweep
  snapshot; any successful full sweep (seed, verify-mismatch or safety-net)
  resets the clock. On load, a valid watermark without a clock starts it now,
  so even watermarks seeded before this field eventually re-sweep.
- When due, the snapshot forces a full sweep for that cycle. Gated on: a
  watermark exists, a routine (non-syncing) cycle, not the Mining page, and
  not in full-sweep backoff -- so a full sweep that can't finish on a slow
  daemon backs off instead of retrying every cycle.

Degrades gracefully: ~0.4 s on a note-cache daemon; callLong(120 s) with
backoff on an old one (the deferred banding would keep each cs_main hold
short so it fits there too). Helper + persistence covered by tests.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-10-16 17:56:30 -05:00
DanSandClaude Opus 4.8 e28cacbe8e style(balance): use the shared SegmentedControl for the earnings toolbar
The Overview earnings controls (interval 1H/1D/1M/1Y, received/net mode, and the
global show-all toggle) were ad-hoc ImGui buttons. They now use
material::SegmentedControl -- the same rounded-track pill the Receive tab's
All/Shielded/Mining filter uses -- so the interval is a text segmented control,
the mode is two icon segments with per-segment tooltips, and the toggle is a
single matching segment (highlighted when on). Verified in a headless GL capture.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-10-16 16:48:33 -05:00
DanSandClaude Opus 4.8 46371c69df perf(balance): stop large-wallet balance polls from saturating the node
On a wallet with a very large shielded note set, the daemon re-decrypts all
notes under cs_main on every z_gettotalbalance / z_listunspent (GetFilteredNotes),
~15-33s per pass. The GUI issued these roughly every 15s and timed them out at
the 30s RPC limit, so the node looked permanently "busy" and per-address
balances read 0 (nothing to carry on a fresh session) while the total was fine.

Two wallet-side mitigations:
- A cost-proportional floor on VISIBLE balance polls (wallet_scan_governor): the
  adaptive backoff previously applied only when the balance was off-screen. It
  now also holds a visible poll until ~3x the measured scan cost has elapsed, so
  a wallet whose sweep costs tens of seconds can't re-poll before the node
  recovers. Negligible for small wallets (cost ~ms); forced / first-read bypass it.
- The heavy balance RPCs (z_gettotalbalance, z_listunspent) now use a 120s reply
  timeout via the existing callLong path, so a slow pass completes and populates
  per-address balances instead of aborting at 30s and leaving them at 0.

The root fix is daemon-side (cache decrypted notes so GetFilteredNotes isn't
O(notes x decrypt) per call); specced separately. Adds governor test coverage.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-10-16 16:48:24 -05:00
DanSandClaude Opus 4.8 3cda8c9e31 perf(history): persist the sent-sweep watermark (windowed relaunch)
z_listsentbyaddress re-walks the whole wallet when there's no usable
watermark, which the daemon does under cs_main for every send -- hundreds
of seconds, 400+ s and ~19 GB RSS on a large wallet. The watermark lived
only in memory, so every relaunch, reconnect or daemon restart paid for a
full sweep. This persists it so those cases run a bounded windowed sweep
([z, 0, 2, tip - W + margin]) instead (SENT-HISTORY-SWEEP Part 1).

- The watermark (W = last swept tip), its anchor (A = W - margin) and anchor
  hash (H_A = getblockhash(A)), plus the enrichment backlog and the full-
  sweep backoff, ride in the encrypted history snapshot as an optional
  `sent_sweep` object (schema stays v1; a missing/inconsistent one reads as
  "no watermark" = today's behaviour, so older builds and payloads are safe).
- Before the first windowed sweep after a load, the anchor is verified
  (getblockhash(A) == H_A). A match means any fork is inside the window; a
  mismatch (reorg deeper than the margin, different chain/datadir) or an
  inability to check drops the watermark and sweeps the whole wallet.
- The first sweep after a load uses a bigger margin (absorbs notifier lag),
  and a watermark older than 2400 blocks uses the long timeout (callLong).
- The backlog is persisted WITH W: a pure z->z send's txid lives only in a
  sweep result and would be lost if the window moved past an un-enriched one.
- Watermark changes reach disk (folded into the store signature), and every
  hard case still forces a full sweep: reorg (anchor verify), GUI rescan /
  zap / import / address change, restoreOriginalWallet, and disconnect.

Deferred (follow-ups, each only turns a correct-but-slow case faster, never a
correctness risk): the banded full sweep for seeding on a pre-note-cache
daemon, the external-import tripwire, and the weekly safety-net re-sweep.
Part 2 (the daemon's decrypt cost) is already on the daemon's
perf/sapling-note-cache branch.

Pure helpers + cache round-trip + anchor-verify/large-window covered by
tests; the getblockhash-after-sweep updates the pinned RPC sequences.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-10-16 14:47:48 -05:00
DanSandClaude Opus 4.8 064c9d1b61 feat(balance): inline period-earnings in the address list and totals
Surfaces the period-earnings aggregator in the Balance tab:
- Toolbar (shared address list): interval pills (1H/1D/1M/1Y), a received-
  vs-net mode toggle, and a global show-all toggle, placed right of "Hide 0
  Balances". The New Z-Address / New mining address buttons move to a footer
  row across from "Showing X of Y" to make room.
- Per address: the row draws its earnings on line 2, left of the $USD value
  (green positive, red negative in net mode), shown when the global toggle
  is on or the address is opted in via a new "Show/Hide earnings" right-click
  item. Works in every layout via the shared list.
- Total: FormatTotalEarnings (gated on the global toggle, so the default
  appearance is unchanged) is wired into the compact hero (dashboard/minimal)
  and the classic layout, left of / beside their USD figure. The remaining
  layouts' totals are not wired yet.
- Settings > Appearance: an "Earnings Display Format" selector (Coin /
  Coin + fiat / Fiat).

New i18n keys are translated into all eight locales; the CJK subset font is
rebuilt for the new glyphs. Builds + test suites pass on both variants.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-10-15 11:22:12 -05:00
DanSandClaude Opus 4.8 2ef91ea7d4 feat(settings): period-earnings preferences + per-address opt-in
Persists the Balance-tab earnings settings: interval (0=Hour 1=Day 2=Month
3=Year, default Day), mode (0=Inflows 1=Net, default Inflows), display
format (0=Coin 1=Coin+fiat 2=Fiat, default Coin+fiat), a global show-all
toggle (default off), and an opt-in set of addresses whose earnings column
is shown when show-all is off. All values are clamped on load and saved,
mirroring the existing favorite/hidden address sets.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-10-15 11:22:12 -05:00
DanSandClaude Opus 4.8 19da7d1474 feat(data): period-earnings aggregation for the Balance tab
Adds src/data/earnings_series.h: a pure, header-only aggregator that sums
wallet inflows (received + mined) over the current calendar period (hour /
day / month / year), optionally net of sends, both per receiving address
and wallet-wide, at "as seen" values. Attribution is best-effort: inflows
map to the receiving address; in net mode a send debits from_address when
present (a send with no from_address still counts in the wallet total).

Includes a revision-keyed EarningsCache (mirrors ui::MiningEarningsCache)
and a 13-assertion unit test covering inflows vs net, per-address
attribution, period exclusion, period nesting, and cache invalidation.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-10-15 11:22:12 -05:00
DanSandClaude Opus 4.8 faf45e60e4 fix(mining): make "Est. Daily" honest about variance and fees
The mining "Est. Daily" was a solo expected-value (your hashrate share x
blocks/day x a fixed block reward) rendered in the same green as the real
Today / Yesterday / All-Time earnings, off an instantaneous hashrate and
gross of pool fees. It read like a dependable daily income when it is a
long-run statistical average with huge (Poisson) variance.

Framing:
- The estimate is now drawn in a neutral colour, not the green "money
  earned" colour (the actual mined totals stay green).
- A sub-label in BOTH modes marks it as an average ("avg", or "avg, net"
  in pool mode when the fee is applied), replacing the pool-only
  "before pool fee" note.
- A hover tooltip over the column explains the variance ("often nothing
  for long stretches, then a lump - NOT a steady daily income") and the
  fee status (after the N% fee / before the fee when unknown / nothing for
  solo and 0%-fee pools).

Accuracy:
- Uses a trailing-average hashrate instead of the instantaneous / 10s
  snapshot: pool prefers hashrate_15m (then 60s, then 10s); solo uses the
  mean of hashrate_history once there are >=10 samples, else the instant
  rate. This stops a spike or a momentary dip from swinging the figure.
- Subtracts the known pool fee so pool-mode figures are net; synthetic or
  unmatched pools stay gross and the tooltip says the fee is unknown.

The static block reward and true pool-reported earnings are intentionally
out of scope (the latter needs a new pool-API field). New i18n keys are
translated into all eight locales; the CJK subset font is rebuilt for the
three new glyphs. Builds + test suites pass on both variants.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-10-15 10:56:36 -05:00
DanSandClaude Opus 4.8 2282f332a6 feat(history): view the transactions involving an address
Adds a "View transactions" action that opens the History tab pre-filtered
to a chosen address. SetTransactionsAddressFilter() stores a pending filter
that RenderTransactionsTab consumes on its next frame — pre-filling the
search box and resetting the type filter to All — then the caller navigates
to NavPage::History. This reuses the existing "prefill + navigate" pattern
(cf. SetSendFromAddress) and all of History's rendering, detail and export.

Triggers:
- Contacts: a context-menu item and a 4th per-row action icon (copy /
  view-transactions / edit / delete; the trailing width is widened to fit).
- Balance address list: a per-address context-menu item (own z/t addresses).
- Receive tab: the recent-received rows now carry their address into the
  filter instead of jumping to History unfiltered.

The History search also now matches from_address, so filtering by one of your
own addresses catches sends FROM it, not only receives INTO it.

Scoping is honest, not exhaustive: transparent is well covered, but shielded
counterparties are private and the transparent sender of received funds is
never recorded on-chain, so this shows transactions *involving* the address.
On Lite, from_address is thin, so own-address send filtering is weaker.

New i18n keys view_transactions / tt_view_transactions translated into all
eight locales (no new glyphs). Builds + test suites pass on both variants.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-10-15 10:13:15 -05:00
DanSandClaude Opus 4.8 5fcab14e4e feat(settings): adjustable opacity for the favorite gold outline + star
Adds a "Favorite Highlight Opacity" slider (15-100%, default 100%) to
Settings > Appearance > Scale & Effects. It scales the alpha of the four
favorite gold tokens (fill/border/icon/outline) at their resolve site in
the Balance address list via material::ScaleAlpha, so the gold row outline
and the star button fade together. The multiplier is skin-agnostic (it
scales whatever alpha the theme resolved) and touches only favorited rows;
non-favorite rows and the white selection highlight are unchanged, and the
100% default is byte-identical to the previous look.

The preference lives in Settings (favorite_opacity, clamped 0.15-1.0 in both
the setter and on load), persists across restarts, updates live, and is not
low-spec gated (it's a pure color-alpha preference, independent of the
transparency sliders). New i18n keys favorite_opacity / tt_favorite_opacity
are translated into all eight locales; the CJK subset font is rebuilt to add
the two new glyphs the zh string needs.

Verified: full + lite builds clean, full + lite test suites pass, hygiene OK.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-10-15 09:58:17 -05:00
DanSandClaude Opus 4.8 e40c6c0a7c perf(market): clip off-screen rows in the portfolio editor
The portfolio-editor address list drew every row every frame inside the
fade-scroll child. It now runs through an ImGuiListClipper; the fixed
step (the InvisibleButton height plus item spacing) keeps each row's
cursor exactly where the unclipped loop put it, so the scroll extent for
the fade shader, the check marks, the selection and the "selected rows
float to the top" ordering are all unchanged.

Verified on DX11 (Windows) at normal and large window sizes and at
font scale 1.5, including skin switch and resize with the dialog open.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-10-14 16:55:07 -05:00
DanSandClaude Opus 4.8 4d95ef68f6 perf(contacts): clip off-screen rows in the Cards and List views
The contacts Cards/List row loop submitted every contact every frame.
It now runs through an ImGuiListClipper, so only the on-screen rows are
built; the fixed step (row height plus the item spacing pushed above)
matches the per-row cursor exactly, so the scroll extent, fade, hover
actions, selection and keyboard navigation are unchanged. Table view is
left unclipped (its rows can wrap).

Verified on DX11 (Windows) at normal and large window sizes and at
font scale 1.5, in both Cards and List views.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-10-14 16:55:07 -05:00
DanSandClaude Opus 4.8 3f85953452 perf(ui): stop backdrop effects requesting frames behind a modal
While a blur overlay (a modal dialog or the lock screen) covers the
window, the theme backdrop effects kept requesting animation frames
even though they are not visible, so the app never went idle and
re-rendered continuously.

The ambient animation predicate now drops the backdrop-effects term
when a blur overlay was active last frame. Reduce Motion and the
unfocused/hidden throttle were already handled, and the overlay's own
moving elements (the lock screen's unlock dots, a spinner) still request
frames through the progress term, so nothing on screen freezes.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-10-14 12:36:43 -05:00
DanSandClaude Opus 4.8 5a3d36904c test(litebe): make the retire test deterministic under the change-gate
The change-gated refresh worker only runs `balance` on a full-refresh
cycle, so testLiteWalletControllerRetire could no longer reliably park
the worker inside a blocked `balance` (it passed only by timing). Bump
the fake scanned height to force a full-refresh cycle, which enters the
now-blocked `balance` deterministically.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-10-14 12:36:43 -05:00
DanSandClaude Opus 4.8 ef14518089 perf(litebe): change-gate the idle lite refresh worker
The background 2 s refresh worker re-queried and re-copied the whole
wallet every cycle (a fresh TLS refresh plus a multi-megabyte JSON
build, copies and DOM parse), even when nothing had changed, so CPU and
the network never went idle.

The worker now skips the full refresh and the re-publish on a cycle that
is provably unchanged, while never letting the UI show stale confirmed
balance or transactions:

- The lite bridge keeps a monotonic mutation epoch, bumped after any
  command not on a read-only allow-list, so a local change made on any
  thread (send, shield, import, new address, encrypt/unlock/lock,
  console) is detected at one choke point.
- Each cycle the worker runs one cheap sync probe (one connection, the
  mandatory block ingest) and a local height read, and refreshes only
  when the scanned height advanced, the mutation epoch moved, the
  encryption state changed, a sync is in progress, or a ~10 s heartbeat
  elapsed; otherwise it skips. Direct/synchronous callers are not gated.
- A failed probe backs off instead of running a second sync, so a dead
  server is not retried back-to-back.

Confirmed funds can never be stale beyond one cycle (every confirmed
change advances the height or bumps the epoch); only unconfirmed mempool
rows can lag up to the heartbeat, and the spend path re-queries the
backend directly rather than reading the gated model. Average idle cost
drops from three data connections per cycle to about one.

Tests: a bridge mutation-epoch test and a worker change-gate test
(skip-when-unchanged; refresh on height advance, local mutation and
encryption change) against the fake backend.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-10-14 12:00:26 -05:00
DanSandClaude Opus 4.8 39292b1b1f feat(litebe): salted Argon2id KDF for new encrypted wallets
New Lite wallets now encrypt their seed and keys with a salted Argon2id
key instead of the unsalted double-SHA256 of the passphrase, which was
cheap to brute-force from a stolen wallet file.

- A shared derive_wallet_key() replaces double-SHA256 across encrypt,
  unlock, remove-encryption and seed recovery. KDF 0 is the old
  double-SHA256 (unchanged); KDF 1 is Argon2id (moderate: 3 passes,
  256 MiB), using sodiumoxide's existing pwhash -- no new dependency.
- The KDF id, salt and parameters are stored in the wallet. A wallet is
  written at version 10 only while it is actually Argon2id-encrypted;
  every pre-existing wallet (plaintext or double-SHA256) is read and
  written byte-for-byte as version 9.
- New-wallets-only: a freshly created or restored wallet encrypts with
  Argon2id; a wallet read from disk never changes its KDF, and removing
  encryption never changes it. Set DRAGONX_LITE_KDF=legacy to keep new
  wallets on double-SHA256.
- An older build (or SilentDragonXLite) opening a version-10 wallet
  fails cleanly with "don't know how to read wallet version 10" before
  parsing anything, never a silent misread; the seed phrase stays the
  cross-wallet recovery path.

Compatibility break (by design, opt-in): a wallet newly encrypted with
Argon2id cannot be opened by older ObsidianDragon or SilentDragonXLite.

Tests: the existing encryption tests now exercise the Argon2id path,
plus the version-10 header, legacy byte-identity and derive_wallet_key
parameter bounds. Validated by the lite oracle suite and the old-vs-new
serialization differential (legacy wallets byte-identical; version-10
round-trips).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-10-14 10:37:34 -05:00
DanSandClaude Opus 4.8 6d4ed96f6d fix(litebe): make HD t-address derivation atomic under scan
Deriving the next HD transparent address read the key count under a
read lock, released it, derived the address, and only then took a
write lock to append it. Between reading the position and appending,
another caller - for instance a scan deriving an address at the same
time - could read the same position, derive the same address, and
append it too, leaving a duplicate transparent key in the wallet.

- The whole read-modify-write now runs under a single write guard, so
  the position a caller derives from reflects every key already
  added. The slow seed stretch is computed once before the guard is
  taken, so holding the lock does not block on it.
- As a further guard, derivation skips a position whose address is
  already present and advances to the next, so no path can produce a
  duplicate even if positions were ever to overlap.
- The starting index is computed exactly as before (it still counts
  imported keys too), so a wallet with no contention derives the same
  addresses in the same order.

Uncontended derivation produces the same addresses in the same order,
verified against the differential harness. The wallet file format is
unchanged.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-10-14 08:50:12 -05:00
DanSandClaude Opus 4.8 b49f85bcbe perf(litebe): take a read lock for wallet serialization in do_save
Saving the wallet serializes it to a temporary file under the sync
lock, but it took a write guard on the wallet to do so. Serialization
only reads wallet state, so the write guard needlessly excluded other
readers for the whole duration of the write, buffering, and flush.

- The save path now takes a read guard to serialize. A read guard
  still excludes writers, so nothing can mutate the wallet mid-write;
  it only lets other readers proceed in parallel. The surrounding
  sync lock still serializes saves against syncs, and the atomic
  temp-file-then-rename sequence is unchanged.

The serialized bytes are identical, verified against the differential
harness. The wallet file format is unchanged.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-10-14 08:50:12 -05:00
DanSandClaude Opus 4.8 0bdea68337 perf(litebe): memoize per-note viewing-key decode on wallet open
Opening a wallet reads each shielded note from disk, and every note
record embeds a 169-byte extended full viewing key that was decoded
from scratch for every note. That decode is an elliptic-curve parse;
a wallet with many notes sharing a handful of keys paid for it once
per note, which dominated open time.

- Note reads now go through a small content-addressed cache keyed on
  the exact 169 raw key bytes. The first note with a given key
  decodes it; the rest reuse the result. Because the cache is keyed
  on the raw bytes and the decoder is deterministic, the cached key
  is identical to a fresh parse.
- The cache is thread-local and naturally bounded by the few distinct
  keys a wallet holds, so it adds no cross-thread state and cannot
  grow without bound.

The bytes on disk are read exactly as before - this only avoids
re-parsing identical bytes - so the loaded wallet is byte-identical,
verified against the differential harness. The wallet file format is
unchanged.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-10-14 08:50:12 -05:00
DanSandClaude Opus 4.8 c045e56d4e perf(litebe-sync): bound the gRPC block channel with backpressure
Each block range is streamed over one gRPC connection into a channel
that a worker thread drains, encodes, and scans. That channel was
unbounded, so when the server delivered blocks faster than the
scanner consumed them the backlog piled up in memory with no ceiling
- on a fast link against a large range it could grow without limit.

- The channel is now a bounded synchronous channel holding at most
  2048 blocks. When it fills, the fetch side waits, applying
  backpressure up the stream instead of buffering endlessly, so peak
  memory is capped no matter how far ahead the server runs.
- The batch size is untouched: it still streams a whole range over a
  single connection, which is what keeps the connection count low
  enough to avoid socket-buffer exhaustion on Windows. Only the
  in-flight depth between fetch and scan is now bounded.

The same blocks are fetched and scanned in the same order, so the
resulting wallet is byte-identical, verified against the differential
harness. The wallet file format is unchanged.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-10-14 08:50:12 -05:00
DanSandClaude Opus 4.8 be69c9bafe fix(litebe-sync): bound the reorg recovery window to the max depth
When sync hit a reorg it stepped the scan back to just before the
invalidated block, then set the top of the re-scan range to that
point plus the full forward batch size. That window is far larger
than any reorg can be: the batch size is tuned for forward streaming
(tens of thousands of blocks), while a reorg is capped at the maximum
reorg depth and the pass aborts once it is exceeded. So the recovery
pass re-fetched and re-scanned a large span of already-good blocks
before it could resume moving forward.

- The recovery range now reaches only the maximum reorg depth (plus
  one) above the rewind point, which is the most a reorg can ever
  disturb. Forward syncing still uses the full batch size; only the
  pass immediately after a reorg is bounded this way.
- The set of blocks that ultimately get scanned is unchanged - the
  next pass picks up from where recovery stops - so the resulting
  wallet is identical, just reached with far less redundant fetching
  and scanning.

The wallet file format is unchanged.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-10-14 08:50:12 -05:00
DanSandClaude Opus 4.8 d9dae45c39 fix(lite): flush the wallet save on quit before _Exit
On quit the lite controller's destructor never runs, because main()
ends the process with _Exit(). Any state the background refresh had
scanned since the last save was lost: the destructor is where that
final save would normally happen, and it was being skipped on the
one path that always runs.

- shutdown() now calls a new flushOnExit() that persists once on the
  way out, bounded to 4 s so the existing 15 s shutdown watchdog
  budget still holds. On timeout it abandons the save thread and lets
  _Exit follow.
- It is a plain save through the same backend path, which writes a
  temp file and renames it into place. That cannot corrupt the wallet
  if it is cut off or abandoned, and it does not change the wallet
  file format - it only persists sooner on the quit path.
- It reuses the destructor's guards and also skips when a wallet op
  is already in progress: shutdown() has already waited for ops to go
  idle, and a still-pending op holds the sync lock and issues its own
  save, so flushOnExit would only block the budget on a save that
  cannot take the lock.

Tests cover a save on the open, synced, idle path (exactly once), a
blocked save returning within the budget, and the retired and
never-opened guards skipping the save.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-10-14 07:51:34 -05:00
DanSandClaude Opus 4.8 e2210cf5d3 fix(lite): refresh the sidebar unconfirmed badge on confirmations
The sidebar unconfirmed-tx badge was recomputed only when the tx list
changed, keyed on last_tx_update plus the list size. That missed the
one case that matters most: a transaction confirming without the list
count changing. last_tx_update did not move for a same-second content
change, and lite never stamped it at all, so the badge stuck on a
stale 0-conf count until some unrelated refresh happened to shift the
list size.

- The badge now keys on tx_revision, which the state bumps on every
  content change - including a confirmation flip at an unchanged tx
  count - and which lite stamps too, so the count tracks confirmations
  on both the full node and the lite wallet.
- The sentinel starts at 0, which tx_revision never takes (it starts
  at 1), so the first frame always computes once.
- The recompute still runs only when the revision actually moved, so
  the per-frame work the previous guard avoided is still avoided.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-10-14 07:51:34 -05:00
DanSandClaude Opus 4.8 25ad23aee4 fix(tx): de-duplicate transparent rows across listtransactions pages
Transparent history is gathered by skip-paging listtransactions. The
underlying list can shift between the per-page RPCs - a new
transaction arriving pushes one page's tail into the next page's head
- so a row could be collected twice and show up as a duplicate in
History.

- Pages are now de-duplicated on the daemon's stable per-output
  identity: txid, send/non-send class, and vout. Keying on the class
  rather than the exact category means a coinbase that matures
  (immature to generate) between two fetches is still recognised as
  the same row; keeping vout means two equal-value outputs of one
  transaction stay distinct. No real transaction row is dropped or
  duplicated.
- Rows with no txid or vout ("move") are never keyed and pass through
  (they are dropped downstream anyway), so the de-dup fails open.
- The raw page size still drives the stop condition and the next-run
  row hint, independent of how many rows were unique.

Tests cover a shifted page whose head repeats the prior page's last
row (dropped), a sibling output of the same tx (kept), and an
un-keyable row (kept).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-10-14 07:21:07 -05:00
DanSandClaude Opus 4.8 6a6ac8cf99 fix(tx): list transactions with account "*" so labelled rows show
listtransactions was called with the default "" account, which
returns only rows in the unnamed account. Transactions tied to a
labelled address were left out of the History tab entirely.

- All three listtransactions call sites now pass "*", which spans
  every account, so labelled-address rows appear alongside the rest.
- With "*" the daemon also emits "move" accounting rows that have no
  txid, address or vout. Those are not wallet transactions, so they
  are skipped and never become blank History rows. No real
  transaction row is dropped by this filter.

Tests cover that a "move" row is skipped while a labelled receive row
is kept, and that the transparent collectors now page with "*".

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-10-14 07:21:07 -05:00
DanSandClaude Opus 4.8 998788d351 perf(rpc): move the result subtree out of the parse tree
parseRpcResult copied the "result" node out of the parsed reply,
because indexing the JSON object yields an lvalue reference. On large
replies - full transaction lists, unspent-note sets - that duplicated
the entire subtree for no reason, and it also meant a secret-bearing
result then existed in two trees at once.

- The result node is now moved out of the parse tree instead of
  copied, so the secret lives only in the returned value that the
  calling code already wipes. The leftover result slot is moved-from
  (null), so the existing secret-scrub of the discarded tree still
  runs harmlessly.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-10-14 07:21:07 -05:00
DanSandClaude Opus 4.8 16371c5879 fix(rpc): bypass the env proxy for loopback RPC and local stats
Loopback HTTP was still subject to the process environment's proxy
settings (http_proxy / all_proxy). That routed the local daemon's
basic-auth credentials and wallet data - and the miner's 127.0.0.1
stats API - through whatever proxy the user's shell happened to
export, and could break the connection outright.

- Local daemon RPC now sets curl's no-proxy to "*" when the host is
  loopback, so it always connects directly. This also overrides a
  no_proxy list. Remote daemons keep full proxy support unchanged.
- The xmrig stats fetch against the local miner API does the same.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-10-14 07:21:07 -05:00
DanSandClaude Opus 4.8 d9143f0e18 fix(rpc): keep the worker alive on non-std throws; atomic flags
The RPC worker loop only caught std::exception. A task that threw
anything else - a non-std exception propagating out of a posted job -
escaped the loop and tore down the worker thread, so every later RPC
silently went unanswered.

- The worker loop now also has a catch-all that swallows non-std
  throws and keeps the thread running. Such a job still loses its
  main-thread callback, exactly as the std::exception path already
  did; the only change is that the worker survives.
- RPCClient's connected_ and warming_up_ flags are now atomic. They
  are read from the UI thread while the worker updates them, so the
  plain bools were a data race.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-10-14 07:21:07 -05:00
DanSandClaude Opus 4.8 7e7804e577 perf(daemon): skip the UI-thread datadir lock wait
Starting the daemon polls for an already-running node holding the
datadir, sleeping up to three 100 ms intervals to let a shutting-down
node clear out. When a start runs on the UI thread, that is up to 300 ms
of blocking sleep on the render thread.

- The lock-wait poll count is now a parameter. A start invoked on the UI
  thread passes 0, which does a single check and never sleeps; every
  other caller keeps the three-poll wait. The default is unchanged, so
  background starts behave exactly as before.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-10-14 06:26:13 -05:00
DanSandClaude Opus 4.8 8df0fe1734 perf(app): run miner shutdown off the UI thread
At quit the UI thread drained and joined the mining-control thread and
then called the miner's blocking stop with a 3 s budget. Both ran on the
UI thread, so the window could stall for up to that long before the
shutdown screen rendered.

- Quit now only signals the mining-control thread (no join) on the UI
  thread. The blocking teardown — join the control thread, then stop the
  miner — moves to a background thread, so xmrig still has a single
  driver but the UI thread never blocks on it.
- On the daemon-stop path that teardown runs first on the shutdown
  thread, so the miner is fully stopped before the daemon stop begins.
  On the disconnect-only quit paths it runs on its own thread, which
  the final shutdown joins before tearing xmrig down, so there is never
  a second concurrent join of the control thread.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-10-14 06:26:13 -05:00
DanSandClaude Opus 4.8 30f5243dd1 perf(daemon): back off the monitor poll when idle
The daemon monitor thread drained output and then slept a fixed short
interval on every tick, waking several times a second for the life of
the node even long after startup, when the node emits almost nothing.
Stopping it also meant waiting out the current sleep before it saw the
stop flag.

- The monitor now waits on a condition variable instead of a plain
  sleep, so a stop request wakes it immediately rather than after the
  interval. The stop flag is set under the monitor's mutex so the wake
  cannot be lost.
- The poll interval stays fast for the first 30 s after the thread
  starts and for 3 s after any output, and otherwise doubles per idle
  tick up to a 500 ms cap. Any new output drops it straight back to
  fast, so responsiveness during startup, rescan and shutdown is
  unchanged while a quiet node is polled far less often. The interval
  choice is a pure function.

Tests cover the interval function across the warmup window, the
recent-data window, the reset on new output, the doubling, and the cap.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-10-14 06:26:13 -05:00
DanSandClaude Opus 4.8 b407b8927a perf(miner): abort xmrig stat fetches on stop
The miner's stats and pool-API fetches are blocking HTTP calls on the
monitor thread with multi-second timeouts. When the miner was stopped,
stop() still had to wait out an in-flight request before the monitor
thread could join.

- Both fetches now install a curl progress callback that aborts the
  transfer as soon as a stop is requested, so a request in flight ends
  promptly instead of running down its timeout.
- An abort triggered by stop is treated as a clean cancellation, not a
  fetch failure, so it is not logged or counted against the failure
  warning.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-10-14 06:26:13 -05:00
DanSandClaude Opus 4.8 60b3ad5d5a fix(miner): close the xmrig stdout fd after the monitor join
Stopping the miner closed the stdout pipe before joining the monitor
thread, and the UI thread's stats poll also drained stdout. Either path
could read or close a descriptor the other side was still using, so a
read could land on a closed or already-reused fd.

- stop() now joins the monitor thread first and only then closes the
  process handle and the stdout pipe, so nothing is draining the pipe
  when it is closed.
- The stdout drain is serialized under its own mutex, and the UI
  thread's stats poll no longer drains stdout at all: the monitor thread
  is the sole reader. The process handle, pid and fds are atomic so they
  can be observed safely from the memory probe.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-10-14 06:26:13 -05:00
DanSandClaude Opus 4.8 614dfbbc5b fix(daemon): let DRAGONX.conf dbcache override the pinned value
The wallet pins a -dbcache value on the daemon command line. A
command-line flag overrides the same key in DRAGONX.conf, so a user who
set their own dbcache in the conf never got it: the wallet's pin always
won.

- Before spawning, a normal start now reads DRAGONX.conf once and, if it
  sets dbcache, drops the wallet's own -dbcache pin from the arguments
  so the user's value takes effect. An isolated start keeps its own
  datadir and conf and is left alone.
- The conf is now read a single time for both this check and the
  existing rpcthreads check instead of twice.

Tests cover dropping the pin when the conf sets dbcache (in various
forms), and leaving the default arguments untouched when it is
commented out, empty, or sets something else.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-10-14 06:26:13 -05:00
DanSandClaude Opus 4.8 a6b7b966b0 fix(daemon): reset the console offset to the watermark on restart
When the daemon was restarted, the output-parse offset was reset to 0.
The daemon's output buffer is retained across runs, so the next poll
re-read the whole retained tail of the previous run and fed it to the
busy tracker as if it were fresh. A witness rebuild or rescan line left
over from the old run could then be mistaken for activity in the new
one.

- On restart the offset is now reset to the absolute end of the output
  at that moment, captured on the lifecycle thread after the stop and
  before the start, so the UI resumes parsing only the new run's output
  rather than replaying the old tail.
- The capture is handed to the UI thread through a pending flag and
  applied there before the next read, both on the normal poll and when
  skipping the backlog, so the offset is only ever moved on the thread
  that owns it.

Tests cover reading from the captured watermark (only the new run is
seen) versus the old reset-to-0 behaviour (the previous run replays).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-10-14 06:26:13 -05:00
DanSandClaude Opus 4.8 e9042f091e refactor(daemon): share the output ring-window helper
The embedded daemon and the xmrig manager each kept their own copy of
the console output ring: append new bytes, trim the front to a cap at a
newline boundary, and hand a reader everything since its offset. The two
copies had drifted. The daemon tracked an absolute byte total so a
reader's offset stayed valid across a front-trim, while the miner keyed
its reader off the live buffer size, so a trim could silently rewind the
console feed.

- The append/trim and the since-offset logic now live in one small
  header, outputWindowSince and appendBounded, included by both. The
  trim keeps the newline-boundary cut and the guard that stops a lone
  trailing newline from erasing the whole buffer.
- The xmrig manager now carries the same absolute byte total, so its
  reader resolves against the window the same way and survives a trim
  (and a process restart that clears the buffer but keeps the total).

Tests cover feeding the ring well past the trim point while a reader
polls each chunk (the feed is continuous and never dies at the trim),
the lone-trailing-newline guard, and a cleared buffer with a retained
total.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-10-14 06:26:13 -05:00
DanSandClaude Opus 4.8 e77b960cc5 build: embed ui.toml and banlist with INCBIN instead of a configure loop
ui.toml and the default banlist were embedded by a CMake function that
read each file and emitted a C array header one byte at a time in a
configure-time loop. That is slow to configure, and because the result
is a header, editing either resource recompiled every translation unit
that included it.

- Both files are now embedded with INCBIN from a small generated
  translation unit, the same pattern already used for the fonts. There
  is no generated header, so editing a resource re-assembles one tiny
  object file instead of triggering a wide recompile, and configure does
  no per-byte work.
- Consumers include a hand-written header declaring the symbols and
  always use the embedded data (the __has_include fallback is gone). The
  data is not NUL-terminated, so every consumer passes an explicit size.
- The old EmbedResources.cmake script is removed, and the generated unit
  is added to the app and test builds.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-10-13 22:03:00 -05:00
DanSandClaude Opus 4.8 3fd52fbdaf perf(chat): ingest a message batch in one transaction
Ingesting a scan's worth of chat messages persisted each new message
with its own append() call, so a batch of fresh messages opened and
committed one SQLite transaction per row.

- A new appendBatch persists many messages in a single transaction,
  using the same INSERT OR IGNORE dedup key as append() and preserving
  input order so load()'s rowid ordering is unchanged.
- Every message is serialized and encrypted before the transaction
  opens, so a message with a non-UTF-8 body is skipped on its own
  without leaving a transaction open; the valid siblings still persist.
- Ingest collects the newly stored messages and writes them once after
  the loop instead of per message. It is inert (returns 0) while locked
  or on empty input.

Tests cover a batch insert, dedup on re-insert, empty input, bad-UTF-8
isolation with a valid sibling and a following append(), insert order,
and the locked no-op.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-10-13 22:03:00 -05:00
DanSandClaude Opus 4.8 1416654385 perf(tx-cache): skip Argon2id for unencrypted wallets
Opening the transaction-history cache always derived its encryption key
with Argon2id, even for an unencrypted wallet. For those wallets the
passphrase is just a value derivable from the database itself, so the
~50-100 ms Argon2id stall bought no additional secrecy and ran on the
UI thread at open.

- Unencrypted wallets now derive the cache key with a cheap,
  domain-separated BLAKE2b KDF over the wallet identity, keyed by the
  per-wallet salt. The secret is derivable from the DB, so this is
  security-equivalent for the unencrypted case and avoids the stall.
- Passphrase-encrypted wallets are unchanged: they keep the Argon2id
  key derivation. The two paths use separate domain labels, so the
  fast-path key and the Argon2id key never collide for the same DB and
  salt; a cache written under one cannot be read under the other.

Tests cover the fast-path round-trip and reopen, and assert that an
Argon2id unlock of the same DB produces a different key and fails to
read the fast-path snapshot.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-10-13 22:03:00 -05:00
DanSandClaude Opus 4.8 3554ba1e2d perf(noise): tile the resident noise texture on GL instead of a copy
Drawing the tiled background noise built a viewport-sized pre-tiled
texture and re-created it whenever the viewport changed, copying the
256x256 noise tile across the whole screen in memory.

- On GL the draw now samples the resident 256x256 tile directly with
  GL_REPEAT, computing UVs from the screen rect over the tile size with
  the phase anchored at the viewport origin. The result is pixel-
  identical to the old pre-tiled texture (same generator, same origin)
  with no per-viewport copy.
- DX11 keeps the pre-tiled viewport-sized texture, since its sampler is
  CLAMP and cannot repeat.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-10-13 22:03:00 -05:00
DanSandClaude Opus 4.8 aa486266c6 perf(texture): cap and downscale theme images on load
Theme images were decoded straight to RGBA at their full source size
and uploaded to a GPU texture as-is. A large or over-sized image wasted
VRAM and could exceed the GL maximum texture size, and each code path
also hand-managed the decoded pixel buffer with its own free calls.

- Loading from file and from memory now goes through the shared
  size-aware decoder with a 2048-pixel cap on the long side. An image
  larger than that is downscaled with its aspect ratio kept; an image
  whose area is absurd is rejected; a small image is left untouched.
- The decoder owns the pixel buffer for the life of the upload, so the
  manual free calls are gone.

Tests cover downscaling a wide image to a 2048 long side with the aspect
kept, rejecting an over-area image, and leaving an under-cap image as-is,
plus the fit-dims math at the theme-art cap.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-10-13 22:03:00 -05:00
DanSandClaude Opus 4.8 8c5bd485dd fix(lite): probe servers without joining the thread on the UI thread
Adding a lite server from the network tab restarted the background
server probe immediately. Starting a probe while one is still running
joins the previous worker thread, and that join happened on the UI
thread, so the frame could stall until the outstanding probe finished.

- Adding a server now sets a dirty flag instead of restarting the probe
  inline; the next frame starts a fresh probe once the current pass has
  finished, so the UI thread never blocks on a join.
- The probe's libcurl transfers honor the cancel flag through a progress
  callback and abort cleanly, so a probe in flight stops promptly.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-10-13 22:03:00 -05:00
DanSandClaude Opus 4.8 8168e26d93 perf(updater): read the downloaded archive in one bounded allocation
Before verifying a downloaded archive, both updaters slurped it into a
string with an istreambuf_iterator, which grows the buffer repeatedly
and reallocates as it reads a multi-megabyte file. It also placed no
upper bound on the size it would read into memory.

- A shared readFileExact helper sizes the file first and reads it in a
  single allocation, failing closed if the file is missing, empty,
  larger than a caller-supplied cap, or comes up short. A truncated read
  can never reach the SHA-256 / signature verifier.
- Both updaters use it with the existing max-archive cap.

Tests cover a good read, a read exactly at the cap, over the cap, an
empty file, and a missing file.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-10-13 22:03:00 -05:00
DanSandClaude Opus 4.8 e685d425ed fix(updater): cancel the release-metadata request on dialog close
The daemon and miner updaters fetch release metadata with a blocking
HTTP GET that ignored the updater's cancel flag. Closing the dialog set
the flag, but an in-flight metadata request kept running to completion
on the worker thread, so the dialog could not tear down promptly on a
slow or stalled connection.

- The metadata GET now passes the updater's cancel flag through to the
  HTTP helper, so closing the dialog aborts the request in progress.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-10-13 22:02:59 -05:00
DanSandClaude Opus 4.8 2396ed33db fix(settings): tolerate wrongly-typed values instead of quarantining
Several settings were read with json's value()/get<T>() helpers that
assume the stored type. A hand-edited settings file, or one re-saved
after an inf/NaN float was written back as JSON null, could therefore
hold a value of the wrong type and throw during load. The whole load is
wrapped so a throw quarantines the entire settings file to a
.corrupt- copy, meaning one bad field reset every unrelated setting.

- ui_opacity is accepted only when it is actually a number, and it is
  clamped to the same 0.3..1.0 range the setter enforces; the legacy
  reduced_transparency migration likewise runs only when that key is a
  boolean.
- A non-string name in a blocked chat conversation, and a non-string
  scope in a portfolio entry, now fall back to an empty string instead
  of throwing.

The file loads with the offending field defaulted, and the rest of the
settings survive.

Tests cover ui_opacity as a string/null/int/float/bool, a non-string
blocked-conversation name and portfolio scope, and the legacy
reduced_transparency migration, asserting no quarantine file is written.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-10-13 22:02:59 -05:00
DanSandClaude Opus 4.8 f47528de53 fix(startup): move the single-instance lock to a private per-user file
The single-instance lock lived in /tmp, which is world-writable. Creating
it with mode 0666 there gets masked to 0644, so a second local user
cannot open it O_RDWR and is wrongly blocked from running the wallet at
all. A world-writable directory also lets another user pre-create or
symlink the lock path.

- The lock now lives in a per-user directory: $XDG_RUNTIME_DIR when it is
  an absolute directory the user owns, otherwise the per-user, per-variant
  config directory that startup has already created. Never /tmp.
- It is created mode 0600 with O_NOFOLLOW, and after opening we fstat it
  and refuse anything that is not a regular file we own, rejecting a
  planted symlink or a foreign-owned file.
- The lock file is no longer unlinked on release; flock drops on close,
  and leaving the file in place avoids an unlink/relock race (a stale
  file is harmless).

Tests cover acquiring and conflicting on the lock, the 0600 mode, that
release leaves the file in place, and that a symlinked lock path is
refused.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-10-13 20:57:21 -05:00