[ogorzalka]

Raises the coverage of the package from 40.5 % to 90.7 % (measured locally with PHP 8.4 and pcov; the recorded ratchet was 36.86), with tests only (src/ is untouched).

56 tests (57 to 113) in five new files: the install flow of NewCommand, SelfUpdateCommand, the prompts configuration, ProjectProxy and the version lookup. There is no network call: tests/Support/Sandbox.php puts fake composer, ddev, php and git first in the PATH of a temporary folder, and HTTPS_PROXY points to a closed local port, so Packagist always fails the same way; tests/Support/FileOverlay.php lets Version read an in-memory composer.lock or composer.json (it replaces the file stream wrapper for the duration of a test and each test that uses it calls uninstall() in afterEach). Mockery is not installed, so Prompt::fake() cannot be used: the prompts go through their fallbacks, with a stream set on the input.

Not covered: UpdateChecker (65.4 %) and SelfUpdateCommand (62 %) run their remaining lines only with a successful HTTPS answer from Packagist, and new Client is hard-coded in src/, so it cannot be replaced; a fake HTTPS server would need a certificate authority that Guzzle accepts, which depends on the machine and on the CI. A few isolated lines remain in NewCommand (Windows branches, a failed file read), RunsCommands and ProxyCommand.

Existing test not changed: UpdateCheckerTest ("does not crash when notifying") makes a real network call and writes to the real ~/.pollora/update-check.json.

The ratchet in .harness.json is not changed in this pull request: the figure measured locally before any test (40.5 %) is above the recorded one (36.86), so the CI and the local measure differ for this package. It will be set to the value the CI measures, in a follow-up. 113 tests pass in random orders; Pint, PHPStan, Rector (--dry-run), tests/Arch.php and the type coverage (100 %, threshold 98) are clean.