Session requests normally remain pinned to their stored directory. This made it impossible to fork a session whose directory had moved or disappeared, even when the caller explicitly supplied a valid directory.
This change allows only POST /session/:id/fork to prefer an explicitly requested directory. Other session requests keep the existing behavior.
How did you verify your code works?
Added a regression test covering a missing parent directory, the explicit fork directory, and copied message history.
Also verified the full CLI flow with separate processes and persistent storage: create a parent session, move its directory, then run with --session, --fork, and --dir.
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Issue for this PR
Fixes #46276
Type of change
What does this PR do?
Session requests normally remain pinned to their stored directory. This made it impossible to fork a session whose directory had moved or disappeared, even when the caller explicitly supplied a valid directory.
This change allows only POST /session/:id/fork to prefer an explicitly requested directory. Other session requests keep the existing behavior.
How did you verify your code works?
Added a regression test covering a missing parent directory, the explicit fork directory, and copied message history.
Also verified the full CLI flow with separate processes and persistent storage: create a parent session, move its directory, then run with --session, --fork, and --dir.
Screenshots / recordings
Not applicable.
Checklist