LostPages

 LostPages is a lightweight boss guide addon that surfaces the most important strategy tips exactly when you need them — when you target a boss or the encounter begins.

 Features:
 - Tips appear automatically on boss target or encounter start, and hide on kill
 - Includes class/spec-specific tips tailored to your current specialization. Not all classes supported at release
 - Movable and resizable panel — drag to position, drag corner to resize
 - Position and size are saved between sessions
 - Currently covers: Windrunner Spire, Magisters' Terrace, Maisara Caverns, Nexus-Point Xenas, Algeth'ar, Academy, Pit of Saron, Skyreach, Seat of the Triumvirate
 - Type /lp to open options

Additional funtionality:

- Check if the current active Delve story has been completed
- Check if the current active Prey story has been completed

The checks are done by checking if the corresponding achievement is completed or not