drjones 3bdb518f9c feat: refund abandoned rounds; full-journey and capacity tests ...

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>

2026-08-05 23:18:29 +00:00

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