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/panel16_matrix_rain.py

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+"""16x16 matrix-style rain animation."""
+
+from machine import Pin
+import neopixel
+import random
+import time
+
+from panel16_utils import PANEL_H, PANEL_W, clamp8, xy_to_index
+
+
+np = neopixel.NeoPixel(Pin(4), PANEL_W * PANEL_H)
+rng = random.Random(42)
+
+heads = [rng.randrange(-PANEL_H, 0) for _ in range(PANEL_W)]
+
+for _frame in range(320):
+    for y in range(PANEL_H):
+        for x in range(PANEL_W):
+            np[xy_to_index(x, y)] = (0, 0, 0)
+
+    for x in range(PANEL_W):
+        heads[x] += 1
+        if heads[x] > PANEL_H + 6:
+            heads[x] = rng.randrange(-PANEL_H, 0)
+
+        head_y = heads[x]
+        for tail in range(8):
+            y = head_y - tail
+            if 0 <= y < PANEL_H:
+                brightness = clamp8(255 - tail * 36)
+                np[xy_to_index(x, y)] = (0, brightness, 0)
+
+    np.write()
+    time.sleep(0.045)
+
+np.fill((0, 0, 0))
+np.write()