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/thermald/fan_controller.py

@@ -31,7 +31,7 @@ class TiciFanController(BaseFanController):
       self.controller.pos_limit = 0
     elif ignition:
       self.controller.neg_limit = -100
-      self.controller.pos_limit = -30
+      self.controller.pos_limit = -15
     else:
       self.controller.neg_limit = -30
       self.controller.pos_limit = 0