[Feat] [4.x] Composer as tooling

[RichardAnderson]

Introduces composer as a site level tool.

[Copilot]

Pull request overview

Moves Composer from a global PHP-service install into a per-site tooling item managed alongside Node/Pnpm/Yarn, and replaces the multi-tooling picker on PHP/Laravel/PHP-Blank create forms with a single JavaScript package-manager selector.

Changes:

• Add ComposerTooling (installs Composer to $HOME/.local/vito/bin, registered via ToolingServiceProvider); composer install now resolves Composer from PATH via SiteShellEnvironment.
• Make Composer required tooling for PHPSite/Laravel/PHPBlank (always installed at latest supported version), and override createTimeTools/requiredTooling to [] for Wordpress and PHPMyAdmin.
• Replace the generic developer-tooling field with a package_manager tooling selector (Node/pnpm/yarn) and remove global Composer install from PHP::install and InstallServer.

Reviewed changes

Copilot reviewed 16 out of 16 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
app/Tooling/ComposerTooling.php	New site-level Composer tooling implementation.
app/Providers/ToolingServiceProvider.php	Registers ComposerTooling.
app/SSH/OS/Composer.php	Uses SiteShellEnvironment so composer install finds Composer on PATH.
resources/views/ssh/composer/install.blade.php	New install script: per-user Composer with sha384 verify and .bashrc/.profile PATH activation.
resources/views/ssh/composer/uninstall.blade.php	New uninstall script removing the binary and PATH activation lines.
resources/views/ssh/composer/composer-install.blade.php	Quotes cd path; uses composer from PATH instead of /usr/local/bin/composer.
resources/views/ssh/services/php/install-composer.blade.php	Removed; no longer install Composer globally as part of PHP service.
app/Services/PHP/PHP.php	Drops installComposer() from PHP service install.
app/Actions/Server/InstallServer.php	Removes the per-PHP-service Composer install step.
app/SiteTypes/PHPSite.php	Adds Composer to create-time/required tooling and derives tooling versions from package_manager.
app/SiteTypes/Wordpress.php	Overrides createTimeTools/requiredTooling to [].
app/SiteTypes/PHPMyAdmin.php	Overrides createTimeTools/requiredTooling to [].
app/Providers/SiteTypeServiceProvider.php	Replaces tooling field with package_manager selector for PHP/PHP-Blank/Laravel.
app/DTOs/DynamicField.php	toolingSelector gains explicit default and allowNone support.
tests/Feature/SiteToolingTest.php	New tests covering Composer registration, defaults, install/uninstall, and required-tooling rejection.
tests/Feature/PHPTest.php	New test asserting PHP service install no longer fetches Composer globally.