feat(resources): bundle color themes and compiled xterm-ghostty terminfo

Makes the resources directory self-contained like Ghostty's share/ghostty:
- themes/: the 463 iTerm2-Color-Schemes themes Ghostty 1.3.1 ships
  (release 20260216-151611-fc73ce3), with the upstream MIT license.
- terminfo/: xterm-ghostty compiled with `tic -x` from the terminfo
  source generated by ghostty-termio; `infocmp -x` is identical to the
  installed Ghostty's entry.

The generator script and resources-dir discovery changes follow in a
separate commit.

Test Plan:
- TERMINFO=resources/terminfo infocmp -x xterm-ghostty

resources/themes/Tinacious Design Dark

@@ -0,0 +1,22 @@
+palette = 0=#1d1d26
+palette = 1=#ff3399
+palette = 2=#00d364
+palette = 3=#ffcc66
+palette = 4=#00cbff
+palette = 5=#cc66ff
+palette = 6=#00ceca
+palette = 7=#cbcbf0
+palette = 8=#636667
+palette = 9=#ff2f92
+palette = 10=#00d364
+palette = 11=#ffd479
+palette = 12=#00cbff
+palette = 13=#d783ff
+palette = 14=#00d5d4
+palette = 15=#d5d6f3
+background = #1d1d26
+foreground = #cbcbf0
+cursor-color = #cbcbf0
+cursor-text = #999999
+selection-background = #ff3399
+selection-foreground = #ffffff