Initial commit — Amirine Cosplay Lights

Arduino Uno + WS2812B LED strip controller with a text-based lightshow
system. Shows are defined as .txt files (hex color + fade duration per step),
converted to PROGMEM headers by convert_all.py, and navigated at runtime
via a debounced button (tap/double-tap/hold). BSD 2-Clause license.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

converter/shows/example_party.txt

@@ -0,0 +1,24 @@
+// Example: party mode — rapid color flashes
+//
+// Trick: to HOLD a color for N ms, add a second step with the same color
+// and set that step's duration to N. The "fade from red to red" is invisible.
+//
+// Format: #RRGGBB, duration_ms
+
+#FF0000,    0   // snap to red
+#FF0000,  150   // hold red 150ms
+#FF8800,    0   // snap to orange
+#FF8800,  150   // hold orange 150ms
+#FFFF00,    0   // snap to yellow
+#FFFF00,  150   // hold yellow 150ms
+#00FF00,    0   // snap to green
+#00FF00,  150   // hold green 150ms
+#00FFFF,    0   // snap to cyan
+#00FFFF,  150   // hold cyan 150ms
+#0000FF,    0   // snap to blue
+#0000FF,  150   // hold blue 150ms
+#FF00FF,    0   // snap to magenta
+#FF00FF,  150   // hold magenta 150ms
+#FFFFFF,    0   // snap to white
+#FFFFFF,  150   // hold white 150ms
+#000000,  500   // fade to off — brief pause before looping