refactor: apply 'one folder = one purpose' rule to overflowed packages
- Split by sub-purpose: storage/sql -> schema/+query/+repo/, adaptive/core ->
calc/+metrics/+model/, command/admin -> ops/+support/, api/event ->
session/+score/+generation/, menu/core -> screen/, config/core -> merge/,
config/options -> section/, player/service -> ui/, hook/papi -> resolver/
(done), mode/impl -> solo/+multi/+barrier/ (done)
- Move util/gui migration stubs -> menu/gui; lpschem POJOs -> pojo/
- Cross-package classes made public (signatures unchanged); fixed imports
- docs/ARCHITECTURE.md + TODO.md updated
- Build green: checkstyle 0 errors, PMD 34
loki5512344
de47bce56e
