Fix resume not resetting temp soll for steps that inherit temperature

Steps with no 'temperature' field inherit their target from a prior step
(temperature=None in the resolved schedule). The resume-from-pause code
only called set_theta_soll when the current step had an explicit temperature,
so any manual setpoint change made during pause was never reverted for
inherited steps (e.g. sud_0010 steps 2-3 both hold at step 1's 57 °C).

Fix: save theta_soll_set at pause time; use it as fallback on resume when
the current step's temperature is None. Also set initialTempSollSync=true
in the browser on play so the slider accepts the next server Soll push
regardless of message arrival order relative to the State update.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SH2D4LRuCnhLSzoYerAfJX

tasks/sud.py

@@ -107,6 +107,9 @@ class SudTask(ATask):
 		self.energy_by_step = {}
 		self._energy_index = None
 		self._energy_changed = ChangedFloat(self._on_energy_changed, prec=2)
+		# Saved on pause so resume can restore the effective setpoint even
+		# when the current step has temperature=None (inherits from a prior step).
+		self._paused_temp_soll = None
 		msg_handler.set_recv_handler(self.recv)
 
 	def apply_plant_params(self, grain_mass, water_mass):
@@ -445,8 +448,14 @@ class SudTask(ATask):
 						ramp = step.get('ramp')
 						hold = step.get('hold')
 						ramping = self.sud.state == SudState.RAMPING
-						if step.get('temperature') is not None:
-							self.tc.set_theta_soll(step['temperature'])
+						# Use step's own temperature if set; fall back to
+						# the value saved at pause for steps that inherit
+						# their target from a prior step (temperature=None).
+						target_temp = step.get('temperature')
+						if target_temp is None:
+							target_temp = self._paused_temp_soll
+						if target_temp is not None:
+							self.tc.set_theta_soll(target_temp)
 						if ramping and ramp:
 							self.tc.set_heatrate_soll(ramp['rate'])
 						phase = ramp if ramping else hold
@@ -458,6 +467,7 @@ class SudTask(ATask):
 				# reanchor itself - see _reanchor_forecast().
 				self.sud.confirm()
 			elif 'Pause' in pair[0]:
+				self._paused_temp_soll = self.tc.theta_soll_set
 				self.sud.pause()
 			elif 'Stop' in pair[0]:
 				self.sud.stop()