The cron runtime tripwire (_scan_cron_prompt) used a 10-char invisible-unicode
set while the install-time scanner (threat_patterns.INVISIBLE_CHARS) flags 17.
The cron-local set was missing U+2062-U+2064 (invisible math operators) and
U+2066-U+2069 (directional isolates), so a directive obfuscated with one of
those codepoints (e.g. "ig<U+2063>nore all previous instructions") slipped past
the runtime cron gate while being caught at install time.
Import the canonical set so the cron tripwire and install scanner can't drift
apart again. Emoji-ZWJ protection (_zwj_has_emoji_neighbour) is unchanged.
Fixes#35075
Co-authored-by: rlaope <piyrw9754@gmail.com>
fbfccbb3ee