Move Core/Database into XcVm\Core\Database (DatabaseHandler, Database,
MigrationRunner, QueryHelper). First of the Core hub sub-layers.
- Namespace the 4 classes; DatabaseHandler extends Database (same namespace);
built-ins/ioncube qualified (\PDO, \PDOException, \Exception, \Throwable,
\XC_VM); Database keeps its 'use XcVm\Core\Logging\FileLogger;'.
- Add 'use XcVm\Core\Database\...;' to referencing files (DatabaseHandler 51,
Database 64, QueryHelper 29, MigrationRunner 3) + 2 test files (PHPStan does not
analyse tests/, so PHPUnit is the gate there).
- Rewrite pre-existing leading-backslash global refs (\DatabaseHandler etc., e.g.
in @param docblocks of ResellerApiDispatcher/ResellerTableRenderer) to the full
FQCN \XcVm\Core\Database\... — a 'use' import does not cover a leading-\
reference. Done with a lookbehind so FQCN continuations and use-lines are intact.
- phpstan-baseline.neon regenerated (292→292; pre-existing Database/migration_logic
findings re-anchored after class names in messages gained the namespace).
Verified: php -l clean; PHPStan no errors; PHPUnit 295/295.
Adds tests/Support/TestDb.php — a Database-compatible wrapper over
sqlite::memory: injected via setDb() — and StreamConfigRepositoryTest as a
worked example (SELECT/list/keyed/DELETE-cascade/not-found). 286 -> 292 tests.
Divarion-D