bench mode, ClearPilot menu, status window, UI introspection RPC

Bench mode (--bench flag):
- bench_onroad.py publishes fake vehicle state as managed process
- manager blocks real car processes (pandad, thermald, controlsd, etc.)
- bench_cmd.py for setting params and querying UI state
- BLOCKER: UI segfaults (SIGSEGV) when OnroadWindow becomes visible
  without camera frames — need to make CameraWidget handle missing
  VisionIPC gracefully before bench drive mode works

ClearPilot menu:
- Replaced grid launcher with sidebar settings panel (ClearPilotPanel)
- Sidebar: Home, Dashcam, Debug
- Home panel: Status and System Settings buttons
- Debug panel: telemetry logging toggle (ParamControl)
- Tap from any view (splash, onroad) opens ClearPilotPanel
- Back button returns to splash/onroad

Status window:
- Live system stats refreshing every 1 second
- Storage, RAM, load, IP, WiFi, VPN, GPS, time, telemetry status
- Tap anywhere to close, returns to previous view
- Honors interactive timeout

UI introspection RPC:
- ZMQ REP server at ipc:///tmp/clearpilot_ui_rpc
- Dumps full widget tree with visibility, geometry, stacked indices
- bench_cmd dump queries it, detects crash loops via process uptime
- ui_dump.py standalone tool

Other:
- Telemetry toggle wired to TelemetryEnabled param with disk space guard
- Telemetry disabled on every manager start
- Blinking red circle on onroad UI when telemetry recording
- Fixed showDriverView overriding park/drive transitions every frame
- Fixed offroadTransition sidebar visibility race in MainWindow
- launch_openpilot.sh: cd to /data/openpilot, --bench flag support

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

selfdrive/ui/qt/onroad.cc

@@ -7,6 +7,7 @@
 #include <sstream>
 
 #include <QApplication>
+#include <QDateTime>
 #include <QDebug>
 #include <QMouseEvent>
 
@@ -402,6 +403,17 @@ void AnnotatedCameraWidget::drawHud(QPainter &p) {
     Hardware::set_display_power(true);
   }
 
+  // CLEARPILOT: blinking red circle when telemetry is recording
+  if (Params().get("TelemetryEnabled") == "1") {
+    // Blink: visible for 500ms, hidden for 500ms
+    int phase = (QDateTime::currentMSecsSinceEpoch() / 500) % 2;
+    if (phase == 0) {
+      p.setPen(Qt::NoPen);
+      p.setBrush(QColor(220, 30, 30));
+      p.drawEllipse(width() - 150, 50, 100, 100);
+    }
+  }
+
   // Header gradient
   QLinearGradient bg(0, UI_HEADER_HEIGHT - (UI_HEADER_HEIGHT / 2.5), 0, UI_HEADER_HEIGHT);
   bg.setColorAt(0, QColor::fromRgbF(0, 0, 0, 0.45));