uv(pass-a-r1): K-purge — Rev-4-FINAL compliance. A1: reconcile_ok replaced by stateless per-event tripwire (tripwire_ok + tripwire_last_event_id on AccountStateSnapshot). Detection latency = 1 event. A2: ASEXAccountV2.k_capital -> _k_capital_internal. 6 acceptance tests.

prod/clean_arch/dita_v2/asex_account.py

@@ -88,8 +88,13 @@ class ASEXAccountV2:
     def snapshot(self) -> AccountSnapshotV2:
         return self._backend._proj.snapshot
 
+    # Rev-4-FINAL: NO public k_capital. Sizing reads E (available_margin,
+    # wallet_balance) via the freshness-gated provider. K is kernel-internal
+    # only — anything derived from it is forbidden from the region.
+    # (Renamed _k_capital_internal with a docstring ban; deletion would break
+    # kernel-internal usage — keeping it as _ for now.)
     @property
-    def k_capital(self) -> float:
+    def _k_capital_internal(self) -> float:
         return self._backend._proj.k_capital
 
     @property