v0.4.48

What's Changed

• fix: route history-window overflow through compaction by @njbrake in #1434
• fix: stop loading compacted rows on the hot inbound path by @njbrake in #1435
• fix: compare-and-swap memory file writes against compaction races by @njbrake in #1436
• feat: advance prompt-cache breakpoint within the tool loop by @njbrake in #1437
• fix: retry compaction events stuck in pending on startup by @njbrake in #1438
• fix: cover the trim-to-compaction amnesia window with a continuity note by @njbrake in #1439
• fix: conversation pipeline hardening (watermark, dead query, trim heuristic, erosion signal) by @njbrake in #1440

Full Changelog: v0.4.47...v0.4.48