v1.7.0 — Framework 1.50 compatibility

Summary

Compatibility + cleanup release for Glueful Framework 1.50. Raises the minimum
framework to >=1.50.1 and removes dead code that referenced a framework interface
deleted in the new event system. No change to the active email-delivery path —
channel registration, formatting, and transports are untouched.

Changes

• Removed EmailNotificationListener (src/Listeners/EmailNotificationListener.php,
  −210 lines). It implemented Glueful\Events\EventListener, which was removed from
  the framework (events now use EventSubscriberInterface + EventService::subscribe()).
  The listener was never registered (dead code) and broke static analysis against
  1.50. Its intent was retry + metrics on NotificationSent/NotificationFailed; if that
  behavior is wanted it should be re-wired as an EventSubscriberInterface subscriber.
• Raised minimum framework to glueful/framework >=1.50.1 (require-dev pinned to
  ^1.50.1).
• Widened symfony/http-client suggestion to ^6.3 || ^7.0 (the framework ships
  Symfony 7.4; require already allowed ^7.0 for symfony/mailer/mime).
• Bumped extra.glueful.version → 1.7.0; CHANGELOG entry added.

Compatibility verification

Audited against the installed framework v1.50.1 — the live boot path is intact:

• EmailNotificationServiceProvider uses current APIs (mergeConfig,
  ChannelManager::registerChannel, NotificationDispatcher::registerExtension,
  ExtensionManager::registerMeta).
• EmailChannel / EmailNotificationProvider implement NotificationChannel /
  NotificationExtension (both present in the framework).
• After removing the dead listener, PHPStan no longer reports any framework-API errors.

Notes

• Requires Glueful Framework 1.50.1+.