v1.9.0

What's Changed

• PLAN §21: kickoff prompt for Phase 8h (AMI coverage) by @darylalim in #80
• Phase 8h: AMI coverage (D46, D47) by @darylalim in #81
• CLAUDE.md: lessons from Phase 8h (judge list noise, one cause in three shapes, partial baselines) by @darylalim in #82
• Release 1.9.0: AMI coverage (Phase 8h) by @darylalim in #83

Full Changelog: v1.8.0...v1.9.0