0.7.0

Added

• "Export AI skill" command and settings button. Writes a SKILL.md into the vault that teaches an AI assistant the marker grammar, the reply/resolve conventions, and this vault's configured categories. A new "Skill export destination" setting picks the folder: .claude/skills/annoteca/ (Claude Code, the default), .agent/skills/annoteca/ (other assistants), or both. The shipped example marker is covered by a test that parses it with the real parser, so the taught grammar cannot drift from the implementation.