OS behavior (transparency, native drag/resize) differs enough between
platforms that syncing one shared value across devices makes no sense.
Move taskWidget settings out of the synced GlobalConfigState into a
localStorage-backed TaskWidgetSettingsService and a dedicated
UPDATE_TASK_WIDGET_SETTINGS IPC channel.
On macOS, transparent + frameless BrowserWindows do not support native
edge resize or window drag (Electron docs: "Transparent windows are not
resizable"). Use transparent: false on Mac and apply user-set opacity
via BrowserWindow.setOpacity() so native drag/resize keep working.
GlobalConfigFormSectionKey is split from GlobalConfigSectionKey so that
'taskWidget' cannot leak into updateGlobalConfigSection action payloads
(which would create phantom GLOBAL_CONFIG_UPDATE_SECTION ops).
No data migration: users previously configuring the widget will see
defaults and reconfigure once.
Rename the "overlay indicator" feature to "task widget" across the
entire codebase for clearer naming. Includes file renames, config key
migration, IPC event rename, and translation key updates.
Migration handles old persisted data from both the `overlayIndicator`
config key and the deprecated `misc.isOverlayIndicatorEnabled` field.
The `taskWidget` type is made optional in GlobalConfigState to prevent
Typia auto-fix from overwriting migrated values during upgrade.
