The three block-icon call sites each spelled out the same expression that
ItemIconCache::getInlineIcon() now is: the bare icon at the line's text
height, null when the file is missing. They call the helper instead, and
HeaderBar::blockIcon() -- which was that expression and nothing else --
is gone along with its stale "loaded once on first use" comment.
Each site still passes its own widget font, so nothing about the sizing
changes; the rule now lives in one place rather than four.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Ne3mejABZoLWKLh8fgpM3x
