Add profile system for automatic target activation

Profiles monitor running processes and foreground windows to
automatically start/stop targets when conditions are met.
Includes profile engine, platform detector (WMI), REST API,
process browser endpoint, and calibration persistence fix.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

server/src/wled_controller/core/processing/processor_manager.py

@@ -691,22 +691,16 @@ class ProcessorManager:
             state.device_type, state.device_url, client, state.health,
         )
 
-        # Auto-sync LED count
+        # Auto-sync LED count (preserve existing calibration)
         reported = state.health.device_led_count
         if reported and reported != state.led_count and self._device_store:
             old_count = state.led_count
             logger.info(
-                f"Device {device_id} LED count changed: {old_count} → {reported}, "
-                f"updating calibration"
+                f"Device {device_id} LED count changed: {old_count} → {reported}"
             )
             try:
-                device = self._device_store.update_device(device_id, led_count=reported)
+                self._device_store.update_device(device_id, led_count=reported)
                 state.led_count = reported
-                state.calibration = device.calibration
-                # Propagate to WLED processors using this device
-                for proc in self._processors.values():
-                    if isinstance(proc, WledTargetProcessor) and proc.device_id == device_id:
-                        proc.update_calibration(device.calibration)
             except Exception as e:
                 logger.error(f"Failed to sync LED count for {device_id}: {e}")