Mercury Agent adds interactive '#' skill picker

Interactive inline triggers represent a major UX improvement for complex AI agents with large libraries of custom tools and playbooks. By bringing skill selection directly into the input flow, Mercury Agent reduces the cognitive load of remembering specific command names.

• –Auto-complete style dropdown is triggered immediately when a user types `#` in the chat input
• –Users can dynamically search, filter, and pick multiple skills without having to remember strict command syntax or run separate list commands
• –Prevents accidental 'skill fan-out' and incorrect matches by allowing users to explicitly select their desired tools
• –Enhances user flow in multi-agent and tool-heavy setups by keeping all interactions in a single unified interface