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>

arduino/cosplay_lights/show_blue_pulse.h

@@ -0,0 +1,13 @@
+// Generated by convert_all.py from: blue_pulse.txt
+// Do not edit manually — edit the .txt file and run: make shows
+// SPDX-License-Identifier: BSD-2-Clause
+
+#pragma once
+#include "lightshow_format.h"
+
+const Step SHOW_BLUE_PULSE[] PROGMEM = {
+    {  5,   0,  37,     0},  // #050025, 0ms
+    { 40,  40, 255,  3000},  // #2828FF, 3000ms
+    {  5,   0,  37,  3000},  // #050025, 3000ms
+};
+const uint16_t SHOW_BLUE_PULSE_LENGTH = 3;