harden macOS networking port

proxy_chain_manager/config.py

@@ -303,6 +303,19 @@ def migrate(raw: dict) -> dict:
 def sanitize_settings(s: Settings) -> tuple[Settings, bool]:
     """Clamp invalid values from hand-edited JSON. Returns (settings, changed)."""
     changed = False
+    if sys.platform != "win32":
+        unsupported = (
+            "kill_switch_enabled",
+            "mac_spoof_enabled",
+            "mac_rotate_on_chain_rotate",
+            "harden_webrtc_enabled",
+            "lan_lockdown_enabled",
+            "telemetry_kill_enabled",
+        )
+        for name in unsupported:
+            if bool(getattr(s, name, False)):
+                setattr(s, name, False)
+                changed = True
     try:
         cl = int(s.chain_length)
         if not (1 <= cl <= 8):