v4.9.0

What's Changed

• Pin agentic-sdlc to v4.8.0 by @cdowin in #271
• Cadence: overlapping 15-30 minute waves, code first, plan only for one-way doors by @cdowin in #275
• Resolve cadence documentation findings by @cdowin in #278
• Release 4.9.0: short waves and code-first cadence by @cdowin in #279

Full Changelog: v4.8.0...v4.9.0