modeld standby on lat inactive, dashcamd always-on, alert suppression

- modeld: enter standby when latActive=false (not just standstill),
  exception for lane changes (no_lat_lane_change). Fix Python capnp
  property access (.latActive not getLatActive())
- controlsd: move model_suppress computation early, suppress radarFault,
  posenetInvalid, locationdTemporaryError, paramsdTemporaryError during
  model standby + 2s grace period. All cascade from modeld not publishing
- dashcamd: always_run (manages own trip lifecycle), wait for valid frame
  dimensions before encoding (fix SIGSEGV on early start)
- Fan: driving range 15-100% (was 30-100%)

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

selfdrive/manager/process_config.py

@@ -54,7 +54,7 @@ def allow_uploads(started, params, CP: car.CarParams) -> bool:
 
 # ClearPilot functions
 def dashcam_should_run(started, params, CP: car.CarParams) -> bool:
-  return started or params.get_bool("DashcamDebug")
+  return True  # CLEARPILOT: dashcamd manages its own trip lifecycle
 
 procs = [
   DaemonProcess("manage_athenad", "selfdrive.athena.manage_athenad", "AthenadPid"),