Release v4.0.0 — Full SDD Lifecycle · CorvidLabs/spec-sync

What's New

spec-sync 4.0.0 is the full Spec-Driven Development lifecycle release — covering authoring, validation, enforcement, and archival.

All metadata moves into .specsync/ directory (config, registry, lifecycle, changes, archives)
Config converted from JSON → TOML (.specsync/config.toml)
lifecycle_log removed from spec YAML frontmatter — extracted to .specsync/lifecycle/*.json
GitHub Action bumped from @v3 to @v4

specsync migrate — automated 3.x → 4.0 migration (10 steps, dry-run support, idempotent)
Full lifecycle management — specsync lifecycle subcommands: status, promote, demote, set, history, guard, auto-promote, enforce
Lifecycle stages — draft → review → active → stable → deprecated → archived
CI enforcement — specsync lifecycle enforce --all validates lifecycle rules in CI
Change records — .specsync/changes/ tracks spec modifications over time
Spec archival — .specsync/archive/ for retired specs
Cross-project ref scanning — detects depends_on refs to external repos
Agent-agnostic AI config — provider/model settings with local overrides (.specsync/ai-config.local.toml)
Spec file diff detection — PRs that modify spec files themselves are now caught

Run specsync migrate in any existing 3.x project. Supports --dry-run for preview. Creates a backup in .specsync/backup-3x/.

Create CODEOWNERS by @0xLeif in #200
feat: full spec lifecycle + migrate command for v4.0.0 by @corvid-agent in #199
fix(diff): detect when spec files themselves are modified in PRs by @corvid-agent in #204
feat: agent-agnostic AI config with local overrides by @corvid-agent in #205
chore: migrate spec-sync to v4.0.0 directory structure by @corvid-agent in #201

Full Changelog: v3.8.0...v4.0.0