docs(history): document the offline reader next to codeman agent

Replace docs/offline-history.md, which repeated the skill reference and was
linked from nowhere, with a README section and a wiki section beside the
codeman agent commands. Bring the skill reference, its plugin mirror, the
Codeman Skill wiki page and the changeset in line with the reader: forks,
the separate budgets and their flags, UTC dates, phases and complete:false.

docs/wiki/Codeman-Skill.md

@@ -123,8 +123,11 @@ message a worker directly instead of typing into its terminal.
 
 ## What it will and will not do
 
-- **It self-gates.** Outside a Codeman session (`CODEMAN_MUX` unset) it refuses to act and
-  never guesses an API URL, so a global install costs an unrelated agent session nothing.
+- **It self-gates.** Outside a Codeman session (`CODEMAN_MUX` unset) it refuses every live
+  API operation and never guesses an API URL, so a global install cannot drive a server it
+  is not part of. The one exception is reading saved Codex conversations with
+  `codeman history read` (see [Driving Codeman From An Agent](Driving-Codeman-From-An-Agent#reading-saved-codex-conversations)),
+  a local, read-only command that needs no server or session.
 - **Unprompted, it may only** start sessions, prompt them, and delete the ones **it created
   in that conversation, by exact id**, behind a guard that refuses to delete the agent's own
   session.
@@ -153,6 +156,7 @@ The skill checks for both and says so instead of acting.
 | [`reference/recipes.md`](https://github.com/Ark0N/Codeman/blob/master/skills/codeman/reference/recipes.md) | Worked flows: claude, DeepSeek Harness and shell workers, fan-out, watching a blocked worker, messaging. Loaded on demand. |
 | [`reference/endpoints.md`](https://github.com/Ark0N/Codeman/blob/master/skills/codeman/reference/endpoints.md) | Endpoint tables, error codes, the signals each mode emits, capacity limits. Loaded on demand. |
 | [`reference/messaging.md`](https://github.com/Ark0N/Codeman/blob/master/skills/codeman/reference/messaging.md) | Talking to claude workers directly through Claude Code's cross-session messaging. Loaded on demand. |
+| [`reference/history.md`](https://github.com/Ark0N/Codeman/blob/master/skills/codeman/reference/history.md) | Reading saved Codex conversations offline with `codeman history read`: selectors, filters, forks, budgets. Loaded on demand. |
 
 Only `SKILL.md` sits in the agent's context; the references load when a job needs them, so a
 quick run stays quick.

docs/wiki/Driving-Codeman-From-An-Agent.md

@@ -70,6 +70,32 @@ codeman agent rm "$SID"                                   # any session except t
 - **Exit codes** are the same for every verb: `0` done, `1` error, `2` timeout, `3` the
   worker exited, `4` refused. `--json` prints the response's `data`.
 
+## Reading saved Codex conversations
+
+`codeman history read` is the one command here that needs no server and no Codeman
+session: it reads Codex's own saved rollouts (`$CODEX_HOME/sessions`, else
+`~/.codex/sessions`) from disk and writes nothing.
+
+```bash
+codeman history read --session-id 019fc604                      # one conversation, by id or 8+ character prefix
+codeman history read --root-session-id <uuid> --topic auth       # it and every sub-agent or fork under it
+codeman history read --file /path/to/rollout.jsonl --format text
+```
+
+- **Filters** keep whole user/assistant turns: `--topic` is a literal, case-insensitive
+  match, and `--after`/`--before` are inclusive UTC dates.
+- **Forks and sub-agents**: a child's copy of its parent's history is dropped, so every
+  record belongs to the thread that wrote it.
+- **`complete: false`** in the JSON means the evidence is partial: a store file that could
+  not be attributed, a record a running Codex is still writing, an ancestor not found.
+- **Budgets** fail closed and are raisable: `--metadata-bytes` (attributing the store,
+  default 1 GiB), `--max-entries` (65536), `--scan-bytes` (the selected transcripts,
+  16 MiB) and `--max-bytes` (output, 8192). `--json` and `--format text` together are an
+  error.
+
+The full reference ships with the skill as
+[`reference/history.md`](https://github.com/Ark0N/Codeman/blob/master/skills/codeman/reference/history.md).
+
 ## The MCP server
 
 `codeman mcp` is a [Model Context Protocol](https://modelcontextprotocol.io) server, so any MCP

docs/wiki/Home.md

@@ -42,7 +42,7 @@ codeman web    # then open http://localhost:3000
 **Driving it from code**
 
 - [The Codeman Skill](Codeman-Skill) - one prompt, a whole crew: an agent starting and supervising worker sessions.
-- [Driving Codeman From An Agent](Driving-Codeman-From-An-Agent) - the `codeman agent` commands, the MCP server, wait primitives.
+- [Driving Codeman From An Agent](Driving-Codeman-From-An-Agent) - the `codeman agent` commands, the MCP server, wait primitives, reading saved Codex conversations offline.
 - [HTTP API](HTTP-API) - the envelope, auth, the endpoint map, SSE events.
 - [Hooks And Integrations](Hooks-And-Integrations) - events flowing back into Codeman.