economy_differential.rs boots the REAL Python oracle (fifa17-recon/tools/
utas_server.py) as an isolated subprocess (env FUT_PROFILE/FUT_ACCOUNT_PATH/
FUT_PORT into a temp dir + loopback port; no production container/port/save;
killed on Drop) AND the real Rust stack (seeded in-process Core + a real Server
with EconomyServices), seeds a semantically-aligned fixture on both, and drives
16 ops through the REAL surfaces (oracle over HTTP; Rust via
Server::try_handle_economy on the off-runtime thread).
Result: 15 PARITY, 1 DIFFERENT-BY-DESIGN.
- PARITY: credits, userMassInfo economy, purchasegroup (pack70/sentinel/clean-v1
incl. the real SessionStore capability handshake), Store BUY, POST /purchased
open, GET /purchased reveal (VERIFIED: durable single-profile purchased pile
on BOTH — the hypothesised per-SID cache does NOT exist, so PARITY not
DIFFERENT-BY-DESIGN), quick-sell (both forms), move, match WIN (+400 byte
shape), market list/query/cancel.
- DIFFERENT-BY-DESIGN: market second-buy. First buy debits buyNowPrice + closes
on both. Rust's MarketStore is a crash-consistent single-debit ledger (second
buy of a sold listing = no-op, pinned by assertion); the oracle's buyable
market is a stateless PACK_POOL sample that re-debits on repeat. Compat impact
NONE (buy-now is one-shot); Rust is a strict correctness improvement.
No Python source changes; no classifier changes. Deterministic (3 runs).
OpenFUT Agent
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