ClearPilot menu: General/Network/Dashcam/Debug panels

Replace Home panel with General: status, reset calibration, shutdown
timer, reboot/soft reboot/power off. Add Network tab (stock networking
minus APN). Remove system settings access — ClearPilot menu is now the
only settings interface. build_only.sh now auto-chowns before build.

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

build_only.sh

@@ -7,6 +7,9 @@
 
 BASEDIR="/data/openpilot"
 
+# Fix ownership — we edit as root, openpilot builds/runs as comma
+sudo chown -R comma:comma "$BASEDIR"
+
 # Kill stale error displays and any running manager/launch/managed processes
 pkill -9 -f "selfdrive/ui/text" 2>/dev/null
 pkill -9 -f 'launch_openpilot.sh' 2>/dev/null