TempControllerBase: require PID gains via set_params(), not the constructor

Mirrors components/pid/pid.py's own Pid.set_params() pattern: params/
thresholds start out None, and set_params() configures pid_hold/pid_heat/
pid_cool from them. process()/process_fsm() fail naturally (TypeError on
None) if called before set_params() - same as Pid.process() already does -
rather than a new bespoke check. Updates all callers (server/brewpi.py,
SudForecastEstimator, and the pid/sud demo scripts) to call set_params()
right after construction.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01DkkuG48uHFCGKe6dPSERFk

server/brewpi.py

@@ -88,7 +88,8 @@ if __name__ == '__main__':
 	taskmgr.add(heater_task)
 
 	# Temperature Controller
-	tc = PidFactory.create(config['Controller']['pid_type'], DT, config['TempCtrl'], DEFAULT_PLANT_PARAMS, theta_amb=theta_amb)
+	tc = PidFactory.create(config['Controller']['pid_type'], DT, DEFAULT_PLANT_PARAMS, theta_amb=theta_amb)
+	tc.set_params(config['TempCtrl'])
 	tc_task = TcTask(tc, DT_TASK, dispatcher.msgio_get("TempCtrl"))
 	taskmgr.add(tc_task)