Automatic clipboard attachments and clearer guides

PasteToPicker 1.1.0 now completes the native file picker automatically. Press Control–Option–Command–V with a clipboard image: it selects the temporary PNG, presses the enabled Open/Upload button once, and waits for the dialog to close.

Accepting the picker may start an upload through the destination app. A separate Send or Publish button is not pressed. Failed confirmation, a disabled button, a dialog that remains open, or changing apps stops the operation without repeated submissions.

The repository README and each Spoon's guide now explain practical use cases and provide walkthroughs. PersonalSafari and SafariTabGroups code is unchanged; their downloads include the expanded documentation.

Validation: all included automated checks pass, including 12 PasteToPicker scenarios. Automatic confirmation was also verified in a real Safari upload picker: the dialog closed and the image attached successfully.