3D Box Die-line Conversion

I have an existing 3-dimensional mock-up of a product box and I need it flattened into a clean, print-ready vector die-line that I can open and edit in Adobe Illustrator. Accuracy is critical—the finished file has to line up perfectly with the dimensions and folds shown in the mock-up so our packaging prints without surprises.

Here’s what I expect in the final hand-off:
• One Adobe Illustrator (.ai) file with separate layers for cut lines, fold/score lines, safety, and bleed
• CMYK setup with a 3 mm bleed added.
• A PDF proof exported from the .ai file so I can double-check before sending to be printed