Two real host-dispatch test files (no fakes) driving Server::try_handle_economy
against a live in-process Core over the real blocking client + durable
MarketStore/PileStore + JsonIdentityStore, each racer its own OS thread
(off-runtime pattern).
economy_concurrency.rs — 8 races x 50 iterations:
A two BUYs (coins for one) -> exactly one 200 + one 461, final 0, one debit.
B duplicate owned-pack open -> one redemption, +11 once, entitlement once.
C duplicate quick-sell -> one sell + one credit + one removal.
D two market buyers -> one win, one debit, one mint, sold once.
E reward+BUY -> no lost update (Core relative UPDATE under BEGIN IMMEDIATE).
F move+quick-sell / G list+quick-sell -> one coherent transition.
H 1000 concurrent mints -> unique + reversible wire ids, monotonic watermark.
economy_failure.rs — 10 fault-injection sub-cases, all fail-closed:
BUY/open-redeem/generator/pile/identity, quick-sell, move, market
reserve/purchase/complete. CRITICAL complete-sale-after-commit = SAFE: the
listing is left `reserved` (not active), so the active->reserved reserve CAS
can never win again -> not buyable, exactly one debit + one mint. No E3.
Fault injection uses test-file CoreEconomy/ExternalIdentityStore doubles plus a
NARROW, inert-by-default `StoreFault` seam in market_store.rs + pile_store.rs
(the concrete stores have no trait boundary; 3 `tripped()` checks + a field,
zero behaviour unless a test arms it). `parking_lot` promoted to a normal dep
(the seam's Mutex is used at lib scope). Classifier/ROUTE_AUTHORITY/Python
untouched. host lib 71/71; both new tests pass.
OpenFUT Agent