Fix climate: optimistic state for temperature/fan/swing + fix watcher timer leak

Climate setters async_set_temperature, async_set_fan_mode and
async_set_swing_mode sent the command but never wrote HA state nor armed
start_watcher(), so the next 60s coordinator poll overwrote the value with
the stale cloud shadow (target temp / fan / swing "reverting" in the UI).
Align them with async_set_hvac_mode/turn_on/turn_off.

Also fix a timer leak: start_watcher() used a repeating
async_track_time_interval whose cancel callback was never called; switch to
a one-shot async_call_later, cancel any pending watcher first, and cancel it
on entity removal.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: g.delsorbo

custom_components/hon/climate.py

@@ -56,7 +56,7 @@
 )
 from homeassistant.core import callback
 from homeassistant.helpers.dispatcher   import async_dispatcher_connect
-from homeassistant.helpers.event        import async_track_time_interval
+from homeassistant.helpers.event        import async_call_later
 from homeassistant.helpers              import config_validation as cv, entity_platform
 from .const import(
     DOMAIN, 
@@ -257,7 +257,9 @@ async def async_set_eco_pilot_mode(self, value: int):
         await self._device.settings_command(parameters).send()
 
     def start_watcher(self, timedelta=timedelta(seconds=8)):
-        self._watcher = async_track_time_interval(self._hass, self.async_update_after_state_change, timedelta)
+        if self._watcher is not None:
+            self._watcher()
+        self._watcher = async_call_later(self._hass, timedelta, self.async_update_after_state_change)
         self.async_write_ha_state()
 
     async def async_update_after_state_change(self, now: Optional[datetime] = None) -> None:
@@ -350,6 +352,8 @@ async def async_set_temperature(self, **kwargs):
         if (temperature := kwargs.get(ATTR_TEMPERATURE)) is None:
             return False
         await self._device.settings_command({'tempSel': temperature}).send()
+        self._attr_target_temperature = int(float(temperature))
+        self.start_watcher()
 
 
     async def async_set_hvac_mode(self, hvac_mode: HVACMode) -> None:
@@ -386,6 +390,7 @@ async def async_turn_on(self) -> None:
     async def async_set_fan_mode(self, fan_mode: str):
         self._attr_fan_mode = fan_mode
         await self._device.settings_command({'windSpeed':CLIMATE_FAN_MODE.get(fan_mode, CLIMATE_FAN_MODE.get(FAN_MEDIUM))}).send()
+        self.start_watcher()
 
 
     async def async_set_swing_mode(self, swing_mode: str):
@@ -414,10 +419,12 @@ async def async_set_swing_mode(self, swing_mode: str):
 
         self._attr_swing_mode = swing_mode
         await self._device.settings_command(parameters).send()
+        self.start_watcher()
 
 
     async def async_will_remove_from_hass(self):
         """When entity will be removed from hass."""
-        if self._watcher != None:
+        if self._watcher is not None:
+            self._watcher()
             self._watcher = None