The session picker auto-switched into all-projects scope whenever the
current cwd had no sessions, so /resume from a fresh project silently
surfaced every other project's history. The empty-folder hint already
tells users to Tab into all-projects, but the auto-switch made it
unreachable. Both call sites (the /resume slash command and `omp
--resume` startup) now always open in folder scope; `omp --resume`
keeps the global probe only to early-exit with 'No sessions found' when
nothing exists anywhere. The component-level `startInAllScope` option
is deleted along with its callers.
Fixes#3099
roboomp
de03b0c8ee