v2.19.0

What's Changed

• feat: auto-reinforce memories via derived_from on remember by @tcconnally in #488
• feat: scope as a ranking multiplier in recall by @tcconnally in #489
• feat: one-shot maintain CLI verb — shell entry point for the full hygiene pass by @tcconnally in #495
• feat: maintenance dry-run reports would-do estimates for vacuum and reindex by @tcconnally in #496
• feat: optional in-server maintenance loop (serve --maintain-every <hours>) by @tcconnally in #497
• fix(stats): additive active-only entity counts (gather_stats counted archived rows) by @tcconnally in #498
• feat(web): 'About you' dashboard tab — plain-language, trust-annotated, read-only by @tcconnally in #499
• release: v2.19.0 — hands-off hygiene, active-only stats, About-you tab by @tcconnally in #500

Full Changelog: v2.18.2...v2.19.0