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/config.py

@@ -33,6 +33,7 @@ class StorageConfig(BaseSettings):
     picture_sources_file: str = "data/picture_sources.json"
     picture_targets_file: str = "data/picture_targets.json"
     pattern_templates_file: str = "data/pattern_templates.json"
+    profiles_file: str = "data/profiles.json"
 
 
 class LoggingConfig(BaseSettings):