feat(fifa17): own club/stats/{year,consumables} in Rust (Core-accurate)

Migrate the MY CLUB stat set from the Python proxy to a Rust handler computing
Core-accurate counts: player tiers + rare from the collection, staff/consumable
families from catalog kind+subtype, per-nation buckets via the reverse entity
resolver. Faithful port of fut_club_stats.py (VOCAB + global_counts +
context_rows). Unlike the oracle (stale profile + synthetic consumable shelf),
this reflects the real imported content (incl. the content-gap consumables/staff).
Fail-closed 503 on Core error. club/stats/country|league|team sub-screens remain
Python (documented). Adds adapter club_stats module (5 tests), host handler +
classify arm + resolver subtype_of/rareflag_of, ownership + integration tests;
reachability tool splits club/stats global(migrated) vs context(residual).

scripts/openfut-reachability.py

@@ -41,13 +41,14 @@ MIGRATED_NON_ECONOMY = {
     "match/reset",
     "phishing",  # phishing/{trusteddevice,question,validate}
     "hub",
+    "club/stats/global",  # year/consumables/staff
 }
 
 # Documented residual Python-owned non-economy domains (expected > 0 until
 # migrated). Keep in sync with docs/PRODUCTION_AUTHORITY_MATRIX.md.
 RESIDUAL_PYTHON = {
     "openfut/account/sync",
-    "club/stats",  # year/consumables still Python; club/stats/staff is Rust
+    "club/stats/context",  # country/league/team nation-bucket sub-screens
     "clientdata/userHubData",
 }
 
@@ -62,8 +63,12 @@ def python_domain(path: str) -> str:
     tail = m.group(1) if m else p.lstrip("/")
     if tail.startswith("phishing/"):
         return "phishing"
+    if tail.startswith("club/stats/country") or tail.startswith(
+        "club/stats/league"
+    ) or tail.startswith("club/stats/team"):
+        return "club/stats/context"
     if tail.startswith("club/stats"):
-        return "club/stats"
+        return "club/stats/global"
     if tail.startswith("clientdata/"):
         return "clientdata/userHubData"
     return tail