Add multi-panel Pico UDP firmware and Python LED control.

Pico panels get static IPs on 10.1.1.10–14 with per-panel LED counts, Makefile deploy targets, and Python examples for animations, sync tests, and direct Pi SPI control.

Co-authored-by: Cursor <cursoragent@cursor.com>

examples/panel_udp_send.py

@@ -0,0 +1,48 @@
+#!/usr/bin/env python3
+"""Send one animation to Pico panel(s) over UDP."""
+
+from __future__ import annotations
+
+import argparse
+import sys
+
+from leds.animations import ANIMATIONS, DEFAULT_FPS
+from leds.panel_udp import (
+    add_panel_args,
+    format_panel_targets,
+    panel_targets_from_args,
+    run_panel_animation_loop,
+)
+
+
+def main() -> int:
+    parser = argparse.ArgumentParser(description="UDP animation sender for Pico panel(s)")
+    add_panel_args(parser)
+    parser.add_argument("--animation", default="rainbow", choices=sorted(ANIMATIONS))
+    parser.add_argument("--fps", type=float, default=None)
+    parser.add_argument("--brightness", type=float, default=0.25)
+    args = parser.parse_args()
+
+    targets = panel_targets_from_args(args)
+    fps = args.fps or DEFAULT_FPS.get(args.animation, 30)
+    print(f"Sending {args.animation} to {format_panel_targets(targets, args.port)} @ {fps:.0f} fps")
+
+    try:
+        run_panel_animation_loop(
+            targets,
+            args.port,
+            args.animation,
+            fps=args.fps,
+            brightness=args.brightness,
+            panel_id=args.panel_id,
+        )
+    except KeyboardInterrupt:
+        print("\nStopped.")
+    except OSError as exc:
+        print(f"Network error: {exc}", file=sys.stderr)
+        return 1
+    return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())