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_integration.rs

@@ -140,8 +140,8 @@ fn pack_ids(pg: &Value) -> Vec<u64> {
 }
 
 /// Seed via the real Core HTTP API, then exercise the host handlers + transport.
-/// Returns nothing; panics on any mismatch.
-fn seed_and_exercise(base: &str) {
+/// Returns the final Core balance so the restart phase can assert persistence.
+fn seed_and_exercise(base: &str) -> i64 {
     wait_ready(base);
     let http = reqwest::blocking::Client::new();
 
@@ -155,12 +155,30 @@ fn seed_and_exercise(base: &str) {
     let credits: Value = serde_json::from_slice(&handle_credits(&client).body).unwrap();
     assert_eq!(credits["currencies"][0]["funds"], 5000, "seeded balance");
 
-    // Match-reward WRITER: win credits +400 via Core grant_reward, end to end.
-    let m = handle_match_end(&client, br#"{"endReason":"WIN"}"#);
+    // Match-reward WRITER: a WIN applies its reward through Core's authoritative,
+    // exactly-once complete_match transaction, end to end. The reward is at least
+    // the match coins; Core may also grant XP-driven level-up and first-win
+    // achievement coins, so assert the flat match coins + a relative delta.
+    let before_match = client.balance().unwrap();
+    let m = handle_match_end(&client, 1, br#"{"endReason":"WIN"}"#);
     assert_eq!(m.status, 200);
     let mb: Value = serde_json::from_slice(&m.body).unwrap();
-    assert_eq!(mb["allCoins"], 5400, "match reward credited in Core");
-    assert_eq!(client.balance().unwrap(), 5400);
+    assert_eq!(mb["matchCoins"], 400, "flat match coins");
+    let after_match = client.balance().unwrap();
+    assert!(after_match >= before_match + 400, "match credited at least +400");
+    assert_eq!(
+        mb["allCoins"].as_i64().unwrap(),
+        after_match,
+        "response echoes the authoritative Core balance"
+    );
+    // Idempotent replay: the SAME match-end body does NOT double-credit.
+    let replay = handle_match_end(&client, 1, br#"{"endReason":"WIN"}"#);
+    assert_eq!(replay.status, 200);
+    assert_eq!(
+        client.balance().unwrap(),
+        after_match,
+        "replay must not re-credit"
+    );
 
     // Buy a numeric entitlement "70" through the Core economy API (debit 600).
     post(
@@ -169,11 +187,16 @@ fn seed_and_exercise(base: &str) {
         "/economy/purchase-entitlement",
         json!({ "cost": 600, "definition_id": "70" }),
     );
-    assert_eq!(client.balance().unwrap(), 4800, "debit applied atomically");
+    let after_buy = after_match - 600;
+    assert_eq!(
+        client.balance().unwrap(),
+        after_buy,
+        "debit applied atomically"
+    );
 
     // credits reflects the debit through the same Core state.
     let credits2: Value = serde_json::from_slice(&handle_credits(&client).body).unwrap();
-    assert_eq!(credits2["currencies"][0]["funds"], 4800);
+    assert_eq!(credits2["currencies"][0]["funds"], after_buy);
 
     // purchasegroup full-gen shows the owned pack 70 and NO sentinel.
     let pg: Value =
@@ -194,25 +217,27 @@ fn seed_and_exercise(base: &str) {
         client.balance().unwrap(),
         client.entitlements().unwrap().len(),
     );
-    assert_eq!(mass["userInfo"]["currencies"][0]["funds"], 4800);
+    assert_eq!(mass["userInfo"]["currencies"][0]["funds"], after_buy);
     // Invariant: credits coins == userMassInfo coins == Core balance.
     assert_eq!(
         credits2["currencies"][0]["funds"],
         mass["userInfo"]["currencies"][0]["funds"]
     );
+
+    after_buy
 }
 
 /// After a Core restart from the same DB file, all economy state persists.
-fn verify_after_restart(base: &str) {
+fn verify_after_restart(base: &str, expected_balance: i64) {
     wait_ready(base);
     let client = HttpCoreClient::new(base, "fifa17");
     assert_eq!(
         client.balance().unwrap(),
-        4800,
+        expected_balance,
         "coins persisted across restart"
     );
     let credits: Value = serde_json::from_slice(&handle_credits(&client).body).unwrap();
-    assert_eq!(credits["currencies"][0]["funds"], 4800);
+    assert_eq!(credits["currencies"][0]["funds"], expected_balance);
     let pg: Value =
         serde_json::from_slice(&handle_purchasegroup(&client, StoreMode::Sentinel).body).unwrap();
     assert!(
@@ -239,12 +264,12 @@ async fn economy_end_to_end_and_restart_persistence() {
     let b1 = base1.clone();
     let r = tokio::task::spawn_blocking(move || seed_and_exercise(&b1)).await;
     h1.abort();
-    r.expect("exercise phase");
+    let expected_balance = r.expect("exercise phase");
 
     // --- Core instance #2: same on-disk DB, prove persistence ---
     let (h2, base2) = start_core(&db_url).await;
     let b2 = base2.clone();
-    let r2 = tokio::task::spawn_blocking(move || verify_after_restart(&b2)).await;
+    let r2 = tokio::task::spawn_blocking(move || verify_after_restart(&b2, expected_balance)).await;
     h2.abort();
     r2.expect("restart phase");
 
@@ -422,7 +447,8 @@ fn economy_sequence(base: &str, dir: &std::path::Path) -> SeqResult {
         "totalCredits == absolute Core balance"
     );
 
-    // 4) Match END reward through dispatch (WIN = +400).
+    // 4) Match END reward through dispatch. The WIN credits at least the flat
+    //    match coins (Core may also add XP level-up / first-win achievement coins).
     let before_match = client.balance().unwrap();
     let mm = server
         .try_handle_economy(
@@ -434,10 +460,11 @@ fn economy_sequence(base: &str, dir: &std::path::Path) -> SeqResult {
         )
         .expect("match routed");
     assert_eq!(mm.status, 200);
-    assert_eq!(
-        client.balance().unwrap(),
-        before_match + 400,
-        "WIN credited +400 via Core"
+    let mmb: Value = serde_json::from_slice(&mm.body).unwrap();
+    assert_eq!(mmb["matchCoins"], 400, "flat match coins");
+    assert!(
+        client.balance().unwrap() >= before_match + 400,
+        "WIN credited at least +400 via Core"
     );
 
     // 5) MARKET buy-now (async handlers via the bridge): list -> query -> buy ->