feat(host): migrate non-economy UTAS routes to Rust + launcher redesign

Host/adapter (deployed to prod-host):
- POST /ut/auth (+/ut/delete/auth): Rust mints sid, opens Rust session, adopts
  persona from body; POST /openfut/account/sync full Rust envelope.
- GET /userMassInfo: full Rust (was proxy+overlay), shared build_user_mass_info.
- GET/PUT /clientdata/<key>: new clientdata_store.rs (JSON-persisted).
- GET /club/stats/{country,league,team}: context-aware club_stats_body
  (nation/league/team buckets).
- GET /store,/match/keepalive,/captcha,/tfa,/livemessage,/activeMessage: StaticAck.
- GET /watchList, /squad/0, /user: Rust handlers.
- host_test.rs updated for the new routing.

Launcher: bump gitlink to c277213 (shareholder-grade redesign + live account panel).

Docs: PRODUCTION_AUTHORITY_MATRIX, PYTHON_RETIREMENT_PLAN, MATCH_LIFECYCLE, and
route-shapes-2026-08-17 reference fixtures for the still-Python tail.

openfut-utas-host/tests/economy_integration.rs

@@ -759,6 +759,7 @@ fn from_config(base: &str, dir: &std::path::Path) -> openfut_utas_host::config::
         persona_id: 33_068_179,
         market_db_path: dir.join("market.db").to_string_lossy().into_owned(),
         pile_db_path: dir.join("pile.db").to_string_lossy().into_owned(),
+        clientdata_path: dir.join("clientdata.json").to_string_lossy().into_owned(),
     }
 }
 

openfut-utas-host/tests/host_test.rs

@@ -795,7 +795,8 @@ fn classify_squad_and_usermassinfo_routes() {
         Route::UserMassInfo
     );
     // GET /squad/active is now Core-backed (SquadActive). A squad PUT is never a
-    // GET; a numeric GET /squad/<n> for a non-active squad stays on Python.
+    // GET. GET /squad/0 IS the active squad (id 0) -> SquadActive; a numeric
+    // GET /squad/<n> for a NON-active squad (n != 0) stays on Python.
     assert_eq!(
         classify("GET", "/ut/game/fifa17/squad/active"),
         Route::SquadActive
@@ -806,6 +807,10 @@ fn classify_squad_and_usermassinfo_routes() {
     );
     assert_eq!(
         classify("GET", "/ut/game/fifa17/squad/0"),
+        Route::SquadActive
+    );
+    assert_eq!(
+        classify("GET", "/ut/game/fifa17/squad/5"),
         Route::Passthrough
     );
     assert_eq!(