Add set_model_power no-op stub to TempControllerBase

The Normal controller had no set_model_power(), causing callers to
guard with hasattr() instead of relying on a stable interface. Adding a
no-op stub to the base class means all controllers have the method;
TempControllerSmith overrides it to actually update its internal model.
Remove the now-redundant hasattr guards at both call sites.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Tqxrk8uj4M3w3d3eXm3xK8

components/pid/temp_controller_base.py

@@ -89,6 +89,9 @@ class TempControllerBase(APid):
 	def post_pid(self):
 		pass
 
+	def set_model_power(self, power):
+		pass
+
 	def set_theta_ist(self, value):
 		self.theta_ist_set = value
 		if self.is_startup:

components/sud_forecast.py

@@ -181,7 +181,6 @@ class SudForecastEstimator:
 			tc.process()
 			power = actuate(tc.get_power())
 			pot.set_power(power)
-			if hasattr(tc, 'set_model_power'):
 			tc.set_model_power(power)
 
 			if sud.state == SudState.RAMPING:

server/brewpi.py

@@ -148,8 +148,6 @@ if __name__ == '__main__':
 	# Assign temp. sensor readings to tc
 	sensor_task.set_on_changed("temp", ChangedFloat(tc.set_theta_ist, prec=2).set)
 
-	# Assign heater power set to tc model - "Normal" has no internal model
-	if hasattr(tc, "set_model_power"):
 	heater.set_on_changed("power_set", tc.set_model_power)
 
 	# For simulation - the sim sensor has no real plant to read, so it