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New `rat resurrect <source>` subcommand. Source is either a .log path or a session name/id; for names, look up the meta file (works for dead sessions too — metas outlive the process until clean shutdown or `rat kill` sweeps them). Plumbing: - Daemon gets a new `--seed-log <path>` flag. Between SessionStarted and the PTY spawn, it reads the seed log's PtyOutput events and re-appends them to the fresh log, then writes a yellow separator marker so the user can see where the new shell begins. Non-visible events (ClientInput, Resized, SessionStarted/Ended) are dropped. - Client gets `spawn_daemon_with_seed` as the plumbing core; `spawn_daemon` is now a thin `seed_log=None` shim over it, so the existing callers (`new`, `spawn_bare`, post-attach new-session) are unchanged. What resurrect rebuilds: visible scrollback. What it doesn't: the original process, env, cwd. This makes it genuinely useful after a daemon crash or host reboot without pretending to be a full session migration. Session migration is a separate roadmap item (durable state across hosts).
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Superseded by #11 — combined to avoid peer-merge conflict churn. Original commit preserved there. |
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Summary
`rat resurrect` spawns a fresh daemon whose log is pre-seeded with an old session's `PtyOutput`, then attaches. You get the visible scrollback back; the new shell, env, and cwd are fresh (the original PTY is gone).
```sh
rat resurrect ~/.local/state/rat/.log
rat resurrect agent # resolves via meta file (dead sessions OK)
rat resurrect agent -n agent-ii # give the new session a different name
```
Daemon gets a new `--seed-log ` flag. Seed replay happens between `SessionStarted` and the PTY spawn, followed by a yellow `-- rat resurrect: previous session replayed above --` separator.
Test plan