disable tlog calls, add param gate to tlog client

- Comment out all tlog() calls in controlsd (100Hz) and carstate (100Hz)
  — was causing controlsd to lag from JSON serialization + ZMQ overhead
- tlog() now checks TelemetryEnabled memory param (1/sec file read),
  returns immediately when disabled — zero cost when telemetry is off

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

selfdrive/controls/controlsd.py

@@ -639,15 +639,13 @@ class Controls:
     self.enabled = self.state in ENABLED_STATES
     self.active = self.state in ACTIVE_STATES
 
-    # CLEARPILOT: log engagement state for debugging cruise desync issues
-    tlog("engage", {
-      "state": self.state.name if hasattr(self.state, 'name') else str(self.state),
-      "enabled": self.enabled,
-      "active": self.active,
-      "cruise_enabled": CS.cruiseState.enabled,
-      "cruise_available": CS.cruiseState.available,
-      "brakePressed": CS.brakePressed,
-    })
+    # CLEARPILOT: engagement telemetry disabled — was running at 100Hz, causing CPU load
+    # tlog("engage", {
+    #   "state": self.state.name if hasattr(self.state, 'name') else str(self.state),
+    #   "enabled": self.enabled, "active": self.active,
+    #   "cruise_enabled": CS.cruiseState.enabled, "cruise_available": CS.cruiseState.available,
+    #   "brakePressed": CS.brakePressed,
+    # })
     if self.active:
       self.current_alert_types.append(ET.WARNING)