Codex History Visibility Repair

Use when Codex Desktop history, migrated sessions, restored rollout JSONL files, or old projects exist on disk but do not appear in the sidebar, especially after editing .codex sessions, session_index.jsonl, history.jsonl, state_5.sqlite, archived_sessions, or .codex-global-state.json.

by @lttcnly (lttcn)·MIT-0