Move store.go, paths.go, and store_test.go from src/core into the new
src/storage package. Update src/scheduler and src/gui to import storage
instead of core for Store/Paths/OpenStore. Empty the moved files in core
to preserve the package declaration for the remaining core symbols.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Move scheduler.go and scheduler_test.go from src/core to the new
src/scheduler package. The scheduler still takes *[]domain.Job and
*core.Store (storage moves in T1.5). Update src/gui/app.go to import
the new package; rename the local variable to sched to avoid shadowing
the scheduler package name.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
mixeme