Merges xmrcheckout/xmrcheckout main (7 commits since 655d037):
- Add Monero system status and reconciler heartbeat
- Surface Monero health status in UI (dashboard + invoice pages)
- Harden reconciler status heartbeat startup
- Avoid false Monero outage states in UI
- Cache Monero connectivity in system status
- Next.js security patch (15.5.9 → 15.5.14)
- Bump Monero Docker defaults to 0.18.4.6
Resolved conflicts in reconciler.py (kept our advisory lock + upstream
heartbeat), routes.py (kept both imports), README.md (kept both sections).
- Advisory lock: wrap per-invoice processing in try/finally so lock is
ALWAYS released, even on exception. Previously, any error between lock
acquisition and release would leak the lock, causing the invoice to be
silently skipped forever on subsequent cycles.
- Error logging: wallet RPC errors now logged at ERROR level (was DEBUG),
making silent reconciliation failures visible in production logs.
- Transfer protection: don't delete stored transfers when wallet-rpc
returns an empty response (transient RPC glitch). Only prune when we
actually got transfer data back.
- Wallet restore height: new wallets generated from keys now look back
~2 days (1440 blocks) instead of starting at current height. Prevents
missing payments that arrived before the wallet was first opened on a
given wallet-rpc instance.
- Decimal formatting: _format_xmr_fixed() now strips trailing zeros
instead of always showing 12 decimal places (0.033554999694 → 0.033555).
- Invoice amount rounding: fiat-converted amounts now use ROUND_UP with
5 decimal places (was ROUND_DOWN with 12), preventing undercharging.
- Webhook retries: BTCPay webhook delivery now retries up to 3 times
with 1s/2s backoff on 5xx or network errors. Timeout increased 5s→10s.
Failures logged at ERROR level (was WARNING/DEBUG).
jwinterm