* feat: replace connect/listen flow with run lifecycle
* feat(transport): add phpstan generics for typed transport returns
* refactor: standardize variable naming for MCP server instances in transport handling
* test: remove unnecessary phpstan-ignore annotation in DocBlockTestFixture
* refactor: reorganize server handlers and transport structure
* feat: move the test files to corresponding directories
* fix: linter issues
* fix: correct PHPDoc formatting and streamline handler imports
* refactor: update import statement for ServerBuilder to Builder