v5.0.0

BREAKING: raises the PHP floor to >=8.5 and bumps every dependency to
its latest major (nette/application+nette/forms ^3.3, snugcomponents/paginator
^3.1, snugcomponents/filter ^3.0, ajaximple/forms ^6.2, lifephp/utils ^4.1;
orisai/coding-standard replaced by lifephp/coding-standards).

- Full from-scratch unit test suite (nette/tester), 100% line coverage on
  every shipped class.
- PHPStan level 10, zero new ignores.
- Real bugfixes found via the new tests: an associative-array #[DIDefinition]
  argument generating invalid PHP in DI\MultiFactoryDefinition; a crash in
  InlineEditor\Control::onSuccess() that broke every real inline-edit
  submission.
- extra.ai-instructions: ai/usage.md + datagrid-usage / datagrid-data-builder
  skills.