bug(?): left/right light sweep effect barely visible, right side may not trigger at all

[blueberrycongee]

Description

The left/right light sweep effect on terminal tiles appears to be either too subtle or inconsistently triggered:

• Left side effect is occasionally visible but very faint
• Right side effect has never been observed in normal usage
• Unclear whether this is a styling issue (opacity too low / animation too fast) or a logic issue (right-side trigger condition rarely met)

Status

Not fully confirmed — may be working as intended but too subtle, or may be a real bug in the trigger logic or animation rendering. Needs investigation.