v0.8.6

Fixed

• The engine.getChatHistory plugin capability (added in 0.8.5) now reaches sandboxed plugins. It was wired only into the host-side context, not the plugin-worker bridge, so a sandboxed plugin's ctx.engine.getChatHistory was undefined and the call failed silently. It is now bridged through the worker capability + router like the other engine reads. Historical messages from the whatsapp-web.js engine also carry location coordinates and quoted-message references now, matching the live message path (previously a backfilled location rendered empty and replies lost their thread link). (#609)