[Small Rock] Test Save and Reload

[mudabs]

Description

Verify that saved scenes return with complete visual fidelity.

Acceptance Criteria

• Saved scenes reopen successfully.
• Images retain their position, size, orientation, and order.
• Annotations retain their content, position, style, and order.
• Unsaved changes are not included after a deliberate discard.

Test / Verification

• Save complex scenes, close them, reload them, and compare every object.

Notes

• Include a failed-save scenario.