Implement the `Platform.homePath` static method in the os module, exposing the user's home directory via libuv's `uv_os_homedir`. The implementation handles buffer resizing with dynamic allocation when `UV_ENOBUFS` is returned, aborts the fiber with an error message on failure, and registers the method in the module registry. Includes a test suite verifying the returned value is a non-empty string, resolves to a real path, and corresponds to an existing directory.
