The module-specific items are found in the Journal tab, rather than the compendium. Scroll down past the folder for the last chapter, and there should be a folder called "Magic Items." Expand that, and the Shard of the Ise Rune handout should be there. Module-specific NPCs and monsters are also in the Journal tab, and may be found in the "NPCs" folder. Crag cats, for example, are in the Journal tab under NPCs > Misc Creatures.