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>

common/params.cc

@@ -193,6 +193,7 @@ std::unordered_map<std::string, uint32_t> keys = {
     {"SnoozeUpdate", CLEAR_ON_MANAGER_START | CLEAR_ON_OFFROAD_TRANSITION},
     {"SshEnabled", PERSISTENT},
     {"TermsVersion", PERSISTENT},
+    {"TelemetryEnabled", PERSISTENT},
     {"Timezone", PERSISTENT},
     {"TrainingVersion", PERSISTENT},
     {"UbloxAvailable", PERSISTENT},
@@ -211,6 +212,12 @@ std::unordered_map<std::string, uint32_t> keys = {
 
     // FrogPilot parameters
     {"AccelerationPath", PERSISTENT},
+    {"BenchCruiseSpeed", CLEAR_ON_MANAGER_START},
+    {"ClpUiState", CLEAR_ON_MANAGER_START},
+    {"BenchEngaged", CLEAR_ON_MANAGER_START},
+    {"BenchGear", CLEAR_ON_MANAGER_START},
+    {"BenchSpeed", CLEAR_ON_MANAGER_START},
+    {"BenchSpeedLimit", CLEAR_ON_MANAGER_START},
     {"AccelerationProfile", PERSISTENT},
     {"AdjacentPath", PERSISTENT},
     {"AdjacentPathMetrics", PERSISTENT},