feat(fifa17): route match completion to Core exactly-once economy

Adapter: new fut/match_wire.rs owns the FIFA17 match wire — endReason
enum -> canonical result token (win/draw/loss/dnf/no_contest), match-end
payload parse (goals from myMatchStats[0], omitted on DNF/QUIT), and the
reward-response projection (only reversed fields; never bidTokens/
qualifiedChampionEventId). Match logic removed from economy_policy.rs
(kept pack/fee); registered match_wire in fut/mod.rs.

Host: handle_match_end now applies the match to Core's authoritative
complete_match (POST /matches/complete) fail-closed — any Core error is a
503, never a Python fallback — and renders Core's authoritative coins.
Per-match identity from matchReportId or a body fingerprint keys Core's
durable idempotency. New CoreEconomy::complete_match transport +
CoreMatchCompletion/CoreMatchReceipt.

Tests: adapter endReason/parse/projection; host shaping, fail-closed,
malformed, identity dedupe; integration replay + rebased balance chains
(match now also grants XP/level-up/achievement coins).

openfut-utas-host/tests/economy_failure.rs

@@ -30,9 +30,9 @@ use openfut_utas_host::async_bridge::AsyncBridge;
 use openfut_utas_host::market_store::MarketStore;
 use openfut_utas_host::pile_store::PileStore;
 use openfut_utas_host::{
-    build_content_pool, CoreAccess, CoreEconomy, CoreError, EconomyEntitlement, EconomyGrantItem,
-    EconomyPurchase, EconomySale, EconomySaleReceipt, EconomyServices, Fifa17IdentityResolver,
-    HttpCoreClient, PassClient, Server, WireResponse,
+    build_content_pool, CoreAccess, CoreEconomy, CoreError, CoreMatchCompletion, CoreMatchReceipt,
+    EconomyEntitlement, EconomyGrantItem, EconomyPurchase, EconomySale, EconomySaleReceipt,
+    EconomyServices, Fifa17IdentityResolver, HttpCoreClient, PassClient, Server, WireResponse,
 };
 use parking_lot::Mutex;
 use serde_json::Value;
@@ -140,6 +140,12 @@ impl CoreEconomy for FaultEconomy {
         }
         self.inner.settle_sale(sale)
     }
+    fn complete_match(&self, m: &CoreMatchCompletion<'_>) -> Result<CoreMatchReceipt, CoreError> {
+        if self.trip("complete_match") {
+            return Err(Self::injected());
+        }
+        self.inner.complete_match(m)
+    }
 }
 
 /// An `ExternalIdentityStore` that forwards to a real `JsonIdentityStore` but can