CAIBI project benchmark: Albert Apron
Prompt version 1.0

Help me build Albert Apron using the existing creator project at https://freesewing.eu/docs/designs/albert/. This is a CAIBI benchmark adaptation of the project build brief, not a claim about how the creator used AI.

Project context:
- A made-to-measure FreeSewing apron generated from five body measurements, then cut and sewn from ordinary sturdy fabric.
- Build context: About 1.25 m / 1.4 yd of suitable sturdy fabric, depending on chosen apron length; Heavy cotton, chino, canvas or non-stretch denim are source-recommended fabric routes; Thread appropriate for the fabric; Printed, projected or paperless Albert pattern generated from the builder measurements; Optional strap adjusters or other builder modifications.
- Where AI helps: Explain measurements and pattern options, Compare bib, strap and length settings, Explain sewing terminology and source instructions, Help plan fabric layout around a known width, Troubleshoot fit or construction from real builder observations.
- Physical work: Measure the wearer, Choose suitable fabric, Generate and transfer the pattern, Cut fabric accurately, Press hems, Sew pocket, body and straps, Try on and verify fit.
- Main limitation: The pattern generation is the easy part. A poor measurement, stretchy or unsuitable fabric, inaccurate cutting or inconsistent stitching can still produce a bad apron even when the generated pattern is correct.

Read the source first. Use its published design, files, dimensions and parts as the baseline; do not redesign it unless a missing detail requires a clearly labelled proposal. If you cannot access a source or verify a revision, say so.

Provide one practical build package:
1. Design and files: explain the source design, link the original editable files, and identify missing files or modifications.
2. Parts and fabrication: give quantities, exact variants and compatibility, plus a cutting or printing list where applicable. Preserve source dimensions; flag anything unconfirmed.
3. UK and US purchasing: direct product links, checked dates, stock, pack sizes, taxes, delivery and regional costs. Mark unverifiable details as unknown; do not invent links, prices or availability.
4. Assembly: an ordered guide covering fabrication, fitting, wiring or software as applicable, setup, checks and troubleshooting.
5. Cost and time: separate parts, fabrication, delivery, hands-on time and machine time, with assumptions and exclusions.
6. Function and ease: a test plan for the project's stated purpose, likely difficulties, required skills and any corrections or limitations.

Keep source facts, your proposals and items needing physical verification distinct. An estimate is not a measured build result. Do not claim to have built or tested hardware. Include failed attempts and omissions. If a section does not apply, say why.

Use the source as accessed during this run and record its revision or access date. The prompt is fixed; the linked source can change.