Add effort-level strategy and fix framework drift with symlinks

Bump to v0.7.0: collaborative discovery rewrite

Migrate legacy commands/ to skills/ format

Add session handover system: resume command, file tracking, contamination test fixes

Bump to v0.6.1: audit fixes, non-interactive mode, e2e tests

Update bootstrap_project.sh for framework dedup architecture

Sync v0.6.0: framework dedup, remove Lite dead code, add missing files

Bump to v0.6.0: remove Lite engine tier, unify to single Full engine

Initial commit: project-bootstrap plugin v0.5.0