docs(guide): Command Code chat needs the session herdr reports, and none does yet

docs/guide.md

@@ -159,7 +159,7 @@ Every agent herdr runs shows up with its live status, terminal and alerts. The c
 | **omo** | Native session file, found through the pane's process tree | ✓ the `/model` list (picked for the session); other menus — use Terminal |
 | **gjc** | Native session file identified by GJC's SDK broker and the pane's process | — use Terminal |
 | **pi** | Native session file, resolved through herdr; after `/tree`, the branch in play | ✓ its dialogs: a question, a confirmation, an answer typed in |
-| **Command Code** (`cmd`) | Native session file under `~/.commandcode/projects/`, resolved through herdr; after `/tree`, the branch in play | ✓ its permission prompts: Yes / Yes, don't ask again / No |
+| **Command Code** (`cmd`) | Native session file under `~/.commandcode/projects/`, named by the session herdr reports for the pane (see below); after `/tree`, the branch in play | ✓ its permission prompts: Yes / Yes, don't ask again / No |
 | **OpenCode** | Native session in OpenCode 2's own database, resolved through herdr: `~/.local/share/opencode/opencode.db` (`%USERPROFILE%\.local\share\opencode\opencode.db` on Windows), or where the server's `XDG_DATA_HOME` or `OPENCODE_DB` puts it | ✓ its questions on OpenCode 2.0 or later, answered through its background service (`~/.local/state/opencode/service.json`, or under the server's `XDG_STATE_HOME`) one question at a time, with Back to change an earlier one; other prompts, and OpenCode 1 — use Terminal |
 | **Devin CLI** | Native SQLite session, showing the active branch when herdr or the live process explicitly identifies the session; otherwise terminal text | — use Terminal |
 | **Grok** | Linux native update log. Any Grok executable named `grok` or `grok-…` that holds the `events.jsonl` for the session Herdr reported in exactly one directory, with a newer write time than every other held session. Older open files do not hide it; ambiguous IDs, tied times, and an unreported `/resume` use Terminal until Herdr names the confirmed session. macOS and Windows use Terminal. See [Grok setup and limits](grok-chat.md). | — use Terminal |
@@ -175,6 +175,14 @@ it does not start a broker or guess from the screen, session title or newest fil
 Missing, ambiguous or unreadable SDK identity uses Terminal instead. Terminal input,
 status tracking and prompt handling are unchanged.
 
+Command Code chat needs the session herdr reports for the pane. Command Code sends that report
+and herdr keeps only the sessions of the agents it knows natively, so no released herdr accepts
+it yet: the pane's status, title and model arrive, its conversation does not. Without it the
+bridge cannot tell which file under `~/.commandcode/projects/` a pane is showing, and two `cmd`
+panes in one folder are indistinguishable, so Command Code opens in Terminal. Its permission
+prompt cards are read off the screen, not from the session file, so they answer from the chat
+either way.
+
 Devin sessions are never selected by directory or recency alone. A plain `devin` shows the
 terminal text, since herdr does not report its session without its Devin integration; a session
 started with `devin --resume <id>` (or `-r <id>`, as Devin suggests when it exits) is a chat.