When opening a new conversation draft for a different workspace,
OpenChamber kept using the config snapshot from the previously active
directory. The draft agent picker showed wrong agents and the first
send inherited a stale agent selection.
Use useConfigStore.activateDirectory() whenever the draft target is
established or changed:
- openNewSessionDraft: activate config on draft open
- overrideNewSessionDraftTarget: activate config on external override
- setNewSessionDraftTarget: activate config on user target change
- sendMessage (draft path): await activation before reading agent/model
Removes the inline agent resolution block in openNewSessionDraft that
duplicated logic already handled by activateDirectory.
Co-authored-by: hkay-dev <14947763+hkay-dev@users.noreply.github.com>
Co-authored-by: Bohdan Triapitsyn <artmore@protonmail.com>
