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>

leds/strips.py

@@ -0,0 +1,75 @@
+"""Control two WS2812 strips with board-appropriate defaults."""
+
+from __future__ import annotations
+
+from leds.config import StripConfig, default_dual_strip_configs
+from leds.strip import LedStrip
+
+
+class LedStrips:
+    """Drive two WS2812 strips. Use default configs or pass StripConfig per strip."""
+
+    def __init__(
+        self,
+        count0: int,
+        count1: int,
+        *,
+        config0: StripConfig | None = None,
+        config1: StripConfig | None = None,
+        brightness: float = 1.0,
+    ) -> None:
+        if config0 is None or config1 is None:
+            defaults = default_dual_strip_configs(
+                count0, count1, brightness=brightness
+            )
+            config0 = config0 or defaults[0]
+            config1 = config1 or defaults[1]
+
+        self._strips = (
+            _strip_from_config(config0),
+            _strip_from_config(config1),
+        )
+
+    @property
+    def strip0(self) -> LedStrip:
+        return self._strips[0]
+
+    @property
+    def strip1(self) -> LedStrip:
+        return self._strips[1]
+
+    def __getitem__(self, index: int) -> LedStrip:
+        if index not in (0, 1):
+            raise IndexError("strip index must be 0 or 1")
+        return self._strips[index]
+
+    def show(self) -> None:
+        for strip in self._strips:
+            strip.show()
+
+    def clear(self) -> None:
+        for strip in self._strips:
+            strip.clear()
+
+    def close(self) -> None:
+        for strip in self._strips:
+            strip.close()
+
+    def __enter__(self) -> LedStrips:
+        return self
+
+    def __exit__(self, *_exc) -> None:
+        self.close()
+
+
+def _strip_from_config(config: StripConfig) -> LedStrip:
+    return LedStrip(
+        config.count,
+        backend=config.backend,
+        pin=config.pin,
+        channel=config.channel,
+        device=config.device,
+        brightness=config.brightness,
+        spi_bus=config.spi_bus,
+        spi_device=config.spi_device,
+    )