Google replaces Gemini Gems with auto-invoking "skills"

Google is moving Gemini from Gems to a similar system called "skills," with existing Gems migrated automatically. Skills are invoked with / (soon @), can be stacked in a single chat, and auto-invoke when Gemini detects they are useful.

• Gems in Gemini are replaced by "skills" with automatic migration
• Skills are invoked with /, later with @
• Multiple skills can be stacked in one chat
• Gemini auto-detects when to invoke a skill