mark /buddy easter egg as implemented in SYNC.md

fix SYNC.md: only mark self-implemented features as synced

update SYNC.md: mark autocompact refill fix as synced

add consecutive-refill circuit breaker to autocompact

Enable auto dream feature

fix /buddy: remove bun:bundle feature() gates that were DCE'd at build time

merge /buddy easter egg implementation

add /buddy easter egg

fix build.ts: use Bun.build() API with explicit alias plugin

fix build.ts to use bun CLI instead of Bun.build() API

add engineering infrastructure: build script, biome, tests, health check, CI

add SYNC.md feature tracking and rewrite sync-upstream skill

add CLAUDE.md, analysis docs, and consolidate to single-branch workflow

remove test file from archive protection test

add security checks: Claude Code hooks + Git pre-commit/pre-push