V101 SMOOTHED MAP OVERLAY AND CLEAN FAULT-PLANE PANEL

Base
- Built from the v100 finite-fault export fix.

What changed
- Left map panel now uses smoothed/interpolated slip overlay instead of the old raw patch boxes.
- Right fault-plane panel no longer draws the black patch-outline rectangles on top of the interpolation.
- Both panels are intended to look more coherent and less patchy.
- Epicenter X marker and surrounding map remain.
