Fixes the money bug flagged earlier. When an instance died mid-round its
players had already been debited, so their stakes sat with the house:
balanced books, quietly robbed players. Every instance now sweeps for
unresolved rounds and refunds them.
Such a round is marked void, not settled. The schema caught this: the
reveal_is_complete constraint requires a settled round to publish its
seed, and an abandoned round has no outcome to reveal. Void is a distinct
state with its own column and a check that the two are exclusive.
Claiming happens before money moves, so concurrent reconcilers on
different instances refund exactly once.
Adds TestFullPlayerJourney: sign-in with no account, fund, scratch, bet
with an auto target, settle, verify the round independently, check the
ledger history is continuous, transfer to a friend, and confirm the books
still sum to zero. It asserts against the ledger rather than the API's
own summary.
Adds cmd/loadtest. One instance on 4 cores held 25,000 concurrent
websocket connections with zero failures at 586MB RSS, about 26KB per
connection, with the load generator competing for the same CPU.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Auto cash-out closes a position at exactly the chosen target rather than
the next tick's multiplier, and fires whenever the target is at or below
the crash point. This is the feature that makes the game playable over a
network, where manual timing is at the mercy of latency.
House edge drops from 2% to 1% across crash and scratch. Scratch prize
tables retuned so the published 99% RTP is exact.
Adds docs/API.md: the client uses no private endpoints, so anyone can
write a bot against the same API.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
At u=1 the unsigned quotient exceeded int64 and wrapped negative, so the
rarest and most valuable outcome silently became an instant 1.00x loss.
At u=2 it produced a 2.1-billion-times payout the house could never
cover, which would have left settlement failing and the player unpaid.
The crash point is now capped at the largest multiplier the curve can
express, which is unreachable anyway since the round hits its tick
ceiling first.
FromInt now panics outside the Q32.32 integer range instead of wrapping
a positive input into a negative value.
Raises coverage to 88% overall; adds a Makefile with db-reset, since the
append-only ledger steadily consumes bridge headroom across test runs.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Round length is now bounded: the multiplier follows a hyperbolic curve
diverging at 60s, replacing an exponential one where a 275x crash point
produced a two-and-a-half minute round.
Fixes seed reveal, which silently failed every round because pgx cannot
encode a fixed-size byte array as bytea.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
