- Settings tab: new "Vital Sharing (cross-PC)" checkbox + "Open Overlay"
button, plus help text clarifying CharTag is used as the sharing group.
- Drop separate VitalSharingTags list — reuse PluginSettings.CharTag as
the single tag value sent with every share_* payload.
- New VitalSharingOverlayView (HudList of peers with coloured HP/STA/MANA
percentages) modeled after UB's NetworkUI. Colours match the web
sidebar palette (#ff4444 / #ffaa00 / #4488ff).
- VitalSharingTracker now caches a peer snapshot on every inbound
share_vital_update so the overlay can render without re-polling.
- PluginCore.SetVitalSharingEnabled static helper so the settings
checkbox can toggle without poking at private fields.
- /mm vitalsharing command simplified to on|off|status|overlay.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
