Added gsd: ADR-004 — derived-graph reactive task execution (#1546) add anthropic-vertex provider for Claude on Vertex AI (#1533) Fixed ci: reduce GitHub Actions minutes ~60-70% (~10k → ~3-4k/month) (#1552) gsd: reactive batch verification + dependency-based carry-forward (#1549) gsd: enforce backtick file paths in task plan IO sections (#1548)