release: v1.6.0

docs(changelog): add v1.6.0 entry

feat(genesis): tri-signal story complexity assessment for Phase 6 strategy

fix(release): prevent duplicate CHANGELOG entries in auto-changelog

feat(genesis): architecture docs, install flow improvements, changelog fix

feat(release): auto-changelog generation from git log

fix(release): macOS sed compatibility and correct branch name

fix(release): validate CHANGELOG entry before tagging

docs(changelog): add v1.5.1 entry

release: v1.5.1

fix(install): resolve shellcheck warnings (SC2154, SC2155)

ci(genesis): add CI/CD, issue templates, and PR automation

feat(genesis): add version management (VERSION, CHANGELOG, release.sh)

feat(genesis): structural rewrite + harness verification (pass^3 0.90)

feat(install): check OMC plugin registration and settings.json