ui: show backend traffic audit in dialog log

selective-vpn-gui/traffic_mode_dialog.py

@@ -580,6 +580,16 @@ RU: Восстанавливает маршруты/nft из последнег
         self.txt_app.setReadOnly(True)
         tab_log = QWidget()
         tab_log_layout = QVBoxLayout(tab_log)
+        row_log = QHBoxLayout()
+        self.btn_app_audit = QPushButton("Run audit")
+        self.btn_app_audit.setToolTip(
+            "EN: Runs backend traffic audit (duplicates + nft consistency) and prints it here.\n"
+            "RU: Запускает backend-аудит трафика (дубли + nft консистентность) и печатает сюда."
+        )
+        self.btn_app_audit.clicked.connect(self.on_app_audit)
+        row_log.addWidget(self.btn_app_audit)
+        row_log.addStretch(1)
+        tab_log_layout.addLayout(row_log)
         tab_log_layout.addWidget(self.txt_app, stretch=1)
         self.apps_tabs.addTab(tab_log, "Log")
 
@@ -1742,6 +1752,22 @@ RU: Применяет policy-rules и проверяет health. При оши
 
         self._safe(work, title="App picker error")
 
+    def on_app_audit(self) -> None:
+        def work() -> None:
+            audit = self.ctrl.traffic_audit()
+            pretty = (getattr(audit, "pretty", "") or "").strip()
+            if not pretty:
+                pretty = f"ok={getattr(audit, 'ok', False)} message={getattr(audit, 'message', '')}"
+            self._append_app_log("[audit]\n" + pretty)
+            issues = list(getattr(audit, "issues", []) or [])
+            ok = bool(getattr(audit, "ok", False)) and len(issues) == 0
+            if issues:
+                self._set_action_status(f"Audit: issues={len(issues)}", ok=False)
+            else:
+                self._set_action_status("Audit: OK", ok=True)
+
+        self._safe(work, title="Traffic audit error")
+
     def _run_systemd_unit(self, cmdline: str, *, unit: str) -> tuple[str, str]:
         args = shlex.split(cmdline or "")
         if not args: