FABRIC.md item 4.4z: draw the scroll box's visible border

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draw_box_border() (vt100.c) strokes four 1px edges around the 640x480
CANVAS box, reusing the same border-gray constant the REPL strip's
border lines use (renamed VT100_STRIP_BORDER_GRAY -> VT100_BORDER_GRAY
since it's now shared -- one pinned color decision, 4.4w, not two).
Called from erase_display()'s box-scoped branch so the border survives
every box clear (the initial one and any later ESC[2J), not just the
first.

Verified: three-arch clean QEMU boot + logs, amd64 screendump showing a
full rectangle outline around the box, visually distinct from the strip
below it.

Punch list §25 item 4.4z complete.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

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This commit is contained in:

Robert Allan James

2026-08-12 15:07:04 -04:00

co-authored by Claude Sonnet 5

parent 91742e02f4

commit b21aa50a14

11 changed files with 33998 additions and 4 deletions

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experiments/bare_metal/runs/doe-aarch64-20260812-150426.csv

experiments/bare_metal/runs/doe-amd64-20260812-150341.csv

experiments/bare_metal/runs/doe-riscv64-20260812-150540.csv