purlJam

<planning>
1. **Design Strategy**: 
- Goal: a beginner-friendly single-loop poncho for Women's US size 6 constructed on a flatbed knitting machine. Follow the "Triangular Lace Shawl" template: work from center top down, garter-stitch body with a decorative eyelet-lace formed by the row-by-row increases along the slanted edges, and include machine-specific blocking/finishing. 
- Technique choices: use a garter carriage (GC) on a Brother/Knitmaster-style flatbed (or equivalent) so garter stitch is produced automatically while increasing every carriage pass to form a symmetrical triangle. The increases will be performed as standard machine E-wrap increases at both outer edges each carriage pass; these E-wraps will create a consistent eyelet detail along the slanted sides (the "lace border"). This keeps the pattern beginner-level and machine-friendly (no complex transfer lace patterning).
- Yarn & gauge: worsted weight yarn, machine tension recommended and a target gauge stated so needle count and measurements align.

2. **Construction Plan**:
- Cast on a small center group (3 stitches) on the main bed with waste yarn and ravel cord. Use the garter carriage (GC) to produce garter ridges while you increase on every carriage pass by bringing the immediate adjacent needle into work with an E-wrap. Increase 2 sts per RC (1 each side) every carriage pass until the top edge reaches the target stitch count for the wingspan. Then finish with a short, even bind-off/edge treatment and rehang for a narrow selvage if desired.
- The piece is worked flat. To form a single-loop poncho, seam the two short edges of the top edge together (or overlap and stitch to form a neck loop), producing a