docs: update README with context: fork for analysis skills

feat: add context: fork to read-only analysis skills

docs: add github-activity skill to README

chore: gitignore eval workspaces and .claude dir

feat: add github-activity skill for external repo activity dashboard

feat: improve all 6 skills - triggers, platform detection, expanded checks

feat: add refactoring-ui skill for visual design code review

feat(things): fix delete, add update/reschedule/today-summary steps

feat: add Things 3 task management skill

docs: expand README with skill details, requirements, examples

fix: improve all 4 skills - platform awareness, robustness, expanded checks

feat: add repo-health and codebase-stats skills

merge plugins into single eugenes-tools namespace

rename marketplace to eugenes-tools

feat: add Context7 MCP tools as optional dependency for project-scaffold