v1.55.0

What's Changed

• chore: reflect S86-S91 shipped in roadmap (v1.54.0) by @srbryers in #333
• chore: scorecards for S86-S91 with review findings amended by @srbryers in #334
• fix: align hook install count with slope doctor (#307) by @srbryers in #335
• feat: gitignore audit in slope doctor (#323) by @srbryers in #336
• feat: slope retro backfill + status drift surface (#318) by @srbryers in #337
• chore: bump version to 1.55.0 by @srbryers in #338

Full Changelog: v1.54.0...v1.55.0