r2 quality Low: bundled_skill_texts skipped any file that failed a strict
UTF-8 decode, but skill_view's _read_skill_text reads with
encoding="utf-8-sig", errors="replace" and never raises, so a file with one
stray byte is still served to the model while the guard skipped it. Read
every file the same way and drop the try/except; the helper becomes a list
comprehension.
97657239b1