feat: re-add per-run sud log alongside the continuous server log

SudLogTask reuses ServerLogTask's sample format but only records while
a Sud run is active: starts on Play (fresh start only, not a Pause
resume) and writes logs/log_{date_time}_{sud_name}.log on Stop or
natural completion.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TvgC7oy9MxaA4ZQxXqkNdS

tasks/server_log.py

@@ -34,24 +34,34 @@ class ServerLogTask(ATask):
 
 	async def on_process(self):
 		while True:
-			power_set = max(self.heater_task.power_soll, self.heater_task.power_actor)
-			self._samples.append({
-				't':         time.monotonic() - self._t0,
-				'timestamp': time.time(),
-				'temp_ist':  self.tc.theta_ist,
-				'temp_soll': self.tc.theta_soll_set,
-				'rate_ist':  self.tc.heatrate_ist,
-				'rate_soll': self.tc.heatrate_soll,
-				'power_set': power_set,
-				'power_eff': self.heater.power_eff,
-			})
+			if self._should_sample():
+				self._samples.append(self._take_sample())
 			await asyncio.sleep(self.interval)
 
+	def _should_sample(self):
+		return True
+
+	def _take_sample(self):
+		power_set = max(self.heater_task.power_soll, self.heater_task.power_actor)
+		return {
+			't':         time.monotonic() - self._t0,
+			'timestamp': time.time(),
+			'temp_ist':  self.tc.theta_ist,
+			'temp_soll': self.tc.theta_soll_set,
+			'rate_ist':  self.tc.heatrate_ist,
+			'rate_soll': self.tc.heatrate_soll,
+			'power_set': power_set,
+			'power_eff': self.heater.power_eff,
+		}
+
+	def _filename(self):
+		return 'log_{}.json'.format(self._run_id)
+
 	def write(self):
 		if not self._samples:
 			return
 		os.makedirs(self.path, exist_ok=True)
-		filename = 'log_{}.json'.format(self._run_id)
+		filename = self._filename()
 		path = os.path.join(self.path, filename)
 		log_data = {'Name': ''}
 		if self.dt is not None: