The autocomplete module cached the lora_syntax_format value at module load
but never updated it when the setting changed, causing autocomplete to
always insert legacy A1111 format even when 'full path' was configured.
- Expose refreshLoraSyntaxFormat() to re-fetch the setting from the API
- Listen for cross-tab 'storage' events to react to settings saved in
the standalone web UI
- Listen for 'visibilitychange' to refresh when the user switches back
to the ComfyUI tab
- Wire SettingsManager.saveSetting() to set a localStorage key when
lora_syntax_format changes, triggering the storage event