test/hil: report board x test results as a markdown matrix

hil_test.py now writes hil_report.md and prints it to stdout: rows are
boards, columns are tests (bare example names), cells are pass/fail/skip.
test_example returns a per-test status, test_board collects a board x test
grid (one row per flags-on variant), and main() renders an aligned table.
A missing binary counts as skipped. hil_ci.sh copies the report back from
the remote after a run; hil_report.md is gitignored.

Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>

0 files changed, 0 insertions, 0 deletions