Add safe bank failure diagnostics for T5 and T6

Address #14 with request correlation, bounded parser reasons, startup version reporting, and rate-limited storage and settlement logs. Preserve accounting and API identity contracts, extend portable tests, and update release versions and rollout guidance.

versions.json

@@ -1,6 +1,6 @@
 {
   "tws_t5_afk.gsc": "1.0.0",
-  "tws_t5_bank.gsc": "2.0.1",
+  "tws_t5_bank.gsc": "2.0.2",
   "tws_t5_common.gsc": "1.1.0",
   "tws_t5_hud.gsc": "1.1.0",
   "tws_t5_join.gsc": "1.0.0",
@@ -8,13 +8,13 @@
   "tws_t5_lock.gsc": "1.0.0",
   "tws_t5_telemetry.gsc": "1.0.0",
   "tws_t6_afk.gsc": "1.0.0",
-  "tws_t6_bank.gsc": "2.0.1",
+  "tws_t6_bank.gsc": "2.0.2",
   "tws_t6_common.gsc": "1.1.0",
   "tws_t6_hud.gsc": "1.1.0",
   "tws_t6_join.gsc": "1.0.1",
   "tws_t6_leaderboard.gsc": "1.0.0",
   "tws_t6_lock.gsc": "1.0.0",
   "tws_t6_telemetry.gsc": "1.0.0",
-  "t5-plugin": "1.1.0",
-  "t6-plugin": "1.1.0"
+  "t5-plugin": "1.2.0",
+  "t6-plugin": "1.2.0"
 }