generated from coulomb/repo-seed
- session_memory/core/retention.py: RetentionConfig + sweep() with backstop, budget (oldest-analyzed-first, never touches un-analyzed), and hard-cap overflow (analyze-now then reported last-resort data_loss); EvictionReport - tests/test_retention.py covers all four branches Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>