fix: keep foreign discovery from throwing, and correct the adoption docs (release review)

candidatesFrom had moved outside the try when the transports moved to
runForeignProbe, so a classifier failure would have reached the route as a 500.
The module promises it never throws, so the guard is back for local and docker.

Docs:
- The api reference said `blocked` waits are always refused, and listed Ralph as
  refused while two of its file routes were not (they are now).
- The invariants doc and CLAUDE.md gain the rules this review turned up: target
  syntax in names, the ping before list-panes, nothing typed into an adopted pane,
  quoteAdoptLaunch.
- CLAUDE.md no longer says every claude session gets hooks or a stop wait.
- ForeignTmuxSession's mode and workingDir describe the first listed pane, not
  the active one.
- The wiki had no page on adoption: The Dashboard gains an Opened outside Codeman
  section, and the remote and docker pages point at it. docs/docker-cases.md now
  separates an adopted container from an adopted tmux session.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

docs/wiki/Docker-Cases.md

@@ -98,6 +98,10 @@ Adoption is **admin-only in multi-user mode**. Linking creates Codeman's own con
 with one bind mount that has already been checked; an adopted container's mounts belong to
 whoever started it, and one that mounts `/` hands the adopter the host.
 
+That is about a container. A tmux session someone started by hand inside a container is opened
+from the home screen instead, and it needs a Docker case pointing at that container: see
+[Opened outside Codeman](The-Dashboard#opened-outside-codeman).
+
 ## Credentials
 
 Your existing host logins work inside the container without logging in again. Credentials

docs/wiki/Remote-SSH-Sessions.md

@@ -73,6 +73,10 @@ Attaching to someone else's session and closing your tab must not end their run,
 not. Several clients can attach the same remote session at different window sizes without
 clamping each other, and discovery shows a shared badge with the client count.
 
+This list holds Codeman's own sessions. A tmux session someone started by hand on the host is
+found by the home screen instead: see
+[Opened outside Codeman](The-Dashboard#opened-outside-codeman).
+
 ## Files
 
 Previews, downloads and text reads in a remote case go over the same ssh connection the

docs/wiki/The-Dashboard.md

@@ -287,6 +287,38 @@ Two extras depending on the device:
 - **Phones**: tapping the "C" logo gives a session overview instead: NEEDS YOU first, then
   current sessions, then past ones. On by default.
 
+### Opened outside Codeman
+
+A tmux session you started by hand (`tmux new -s work`, then `claude`, or just a shell) shows
+up on the home screen under **Opened outside Codeman**, on the desktop and in the phone
+overview. **Open** wraps it in a tab, and **Go to tab** on a row means it already has one.
+
+| Where it runs        | How it is found                                                              |
+| -------------------- | ---------------------------------------------------------------------------- |
+| **This machine**     | Automatically, every few seconds while the home screen is up.               |
+| **A container**      | The `⟳` button in the block's header scans the containers behind your Docker cases. |
+| **Over SSH**         | The same button scans your saved remote hosts.                               |
+
+The container and SSH scan costs one connection per target, so it runs when you press the
+button, and **Rescan** runs it again.
+
+- **Closing the tab only detaches.** The session keeps running, and the close dialog offers no
+  kill. Opening one types nothing into it.
+- **Codeman did not start it,** so it will not drive it: respawn, Ralph, auto-clear,
+  auto-compact, auto-resume, custom model endpoints, prompt uploads and the image watcher are
+  refused, and the git panel shows nothing.
+- **The tab opens on the session's first window,** and the row describes that same window.
+- **It joins like a second tmux client.** While the tab is open it can resize a session
+  someone else is viewing, the way any second client does, and that reverses when it closes.
+- **A short line in the block says why a session is missing.** One whose name holds unusual
+  characters is skipped, and so is one named so that tmux reads the name as something else (it
+  starts with `=`, `@` or `%`, or is a bare `~`). Rename it with `tmux rename-session`. A tmux
+  server that stopped answering costs only its own sessions.
+
+Only sockets in tmux's own folder are scanned, so `tmux -L <name>` is found and
+`tmux -S /custom/path` is not. In multi-user mode the block is for admins, since it shows
+everyone's processes.
+
 ## Panels
 
 | Panel            | Opened from                       | Covered in                                                       |