Count repeated L07 and L08 at a screenshot seam

overlap-a.png contains L01–L08 at 600×480; overlap-b.png contains L07–L14 at 600×480. trimmed-b.png is a prepared full-line crop of L09–L14 at 600×360.

1. Stitch a then b vertically with zero spacing, download and read across the seam.

2. Record two appearances each of L07 and L08. Keep a unchanged and replace b with trimmed-b.png for a second stitch.

3. Download the corrected copy and require L01–L14 exactly once, with complete adjacent lines L08 and L09.

The uncorrected result is 600×960 with 16 visible line markers; the corrected one is 600×840 with 14. This stitcher draws inputs in order and does not remove overlapping paragraphs automatically.

Painting over duplicate lines in the final image leaves unexplained space and does not establish completeness. Return to the source crop, remove only the confirmed overlap and retain originals plus the seam review.
