Groovy Palette & Frames 0.4.0

Now Groovy Palette & Frames. The mod id stays groovy_palette, so the
launcher keeps updating your existing install and no saved palette moves.

• FRAME — eight new borders for every text box and menu, plus
  GAME BOY for the engine's own: THIN, DOUBLE, TRIPLE, THICK, WIDE, DASH,
  BEADS, TRACK.

  A border is not a texture, it is six font glyphs — tl h tr v bl br —
  and Font.drawBox reads that table fresh every call. So this registers
  its own glyph page and repoints six entries. The choice is written to both
  Font.BORDER (what the next box reads, so it changes immediately) and
  data.font.border (what a font reload rebuilds from, so it survives one).

  Every pixel of the sheet is generated by tools/make_frames.py from rules
  written out in that file. No ROM, no cartridge dump, and not a pixel of
  the engine's own font sheets — modkit lint still reports
  no ROM-derived content.

  The constraint that shaped them. h is drawn along the top and the
  bottom, v along the left and the right — one glyph per axis, not per
  side. So a rail's position is a single number shared by two opposite
  edges, and a corner one pixel off produces a visible step. That rules out
  rounded corners outright: the arc has to bulge outward, which on the right
  edge means the vertical sits further right and on the left further left,
  and one glyph cannot do both. A rippling rail fails the same way. Both
  were drawn, both stepped, both were cut. The eight that shipped are built
  from the rule rather than drawn freehand, and the generator refuses to
  write the sheet if any rail steps.