Files
Codeman/test
d fei aec4867821 fix(adopt): never create a session on someone else's tmux server
Review items 1 and 2 on #510.

`tmux new-session -t <name>` does not fail on a missing target. Measured on
3.3a: with only `work-prod` present it joined that session's group, with
nothing matching it opened a fresh shell, and on an empty socket it started a
tmux server that had none. The command re-runs whenever the wrapper pane is
respawned, and boot recovery does that for every dead pane, so after the owner
exits their session the next Codeman restart would put a new shell on their
default socket, in their container, or on their ssh host.

The invocation now begins with an exact-match `has-session -t '=<target>'` and
exits with a message when it misses. Measured: `has-session` does not start a
server on an empty socket, and the `=` prefix is what stops it matching
`work-prod` by prefix. `=` cannot go on `new-session -t` itself — tmux reads it
as part of the name and creates a group literally called `=work` — so it has to
be its own command.

The read-only `attach-session -r` fallback is gone rather than fixed. It hung
off `||`, so it fired on ANY `new-session` failure and not just an old tmux: a
leftover view from a previous adoption of the same Codeman session makes
`new-session` report `duplicate session` (measured), and the user then got a
read-only client showing the owner's status bar, with typed input dropped,
while the API reported success. Our own stale view is now removed first with a
`kill-session -t '=<our view>'` — the view name is derived from the Codeman
session id so it is provably ours, and measured, killing by name touches only
that session and leaves the owner's alone. Nothing to remove is the normal
case, so that step must not abort the chain.

`SessionAdopt.readOnly` goes with it. It was never set and never read, while
its comment claimed the UI surfaced it. Adoption now either attaches a writable
view or fails with a message; there is no third state.
2026-09-30 23:29:39 -07:00
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