session-persistence-port

name	session-persistence-port
description	Use this skill when porting transcripts, append/rewrite logic, resume behavior, storage limits, tombstones, or session restoration.

This subsystem is correctness-critical.

Tasks:

• map transcript format
• map append vs rewrite semantics
• map resume rules
• map corruption handling
• map size-limit behavior
• verify compatibility expectations

Rules:

• do not break old session compatibility without an explicit migration path
• do not rewrite persistence logic from memory
• use golden fixtures and replay tests