Expand browser editor runtime and LED simulation workflows.

Add Docker deployment support, richer Selenium/LED pattern tests, in-browser diagnostics, responsive UI improvements, and 16x16 panel simulation tooling to speed iteration and hardware-style prototyping.

Made-with: Cursor

workspace/code/pattern_rainbow_demo.py

@@ -0,0 +1,20 @@
+"""Rainbow pattern demo using led_patterns helpers."""
+
+from machine import Pin
+import neopixel
+import time
+
+from led_patterns import rainbow_frame
+
+
+np = neopixel.NeoPixel(Pin(4), 256)
+
+for frame in range(120):
+    frame_colors = rainbow_frame(len(np), frame, step=5)
+    for i, color in enumerate(frame_colors):
+        np[i] = color
+    np.write()
+    time.sleep(0.05)
+
+np.fill((0, 0, 0))
+np.write()