Previous script used NorthWest gravity with fixed pixel offsets, placing
the BR pair in the upper-left quadrant. When Android clips to a circle
the letters appeared off-center.
New approach: -gravity Center with ±HALF offsets so each letter is
symmetrically placed around the canvas centre mathematically. No
subshells, no pixel guesswork. Regenerated all four icon assets.
Davide Scaini
ccfc60934a
