feat: refactor sgclaw around zeroclaw compat runtime

third_party/zeroclaw/firmware/uno-q-bridge/sketch/sketch.ino

@@ -0,0 +1,24 @@
+// ZeroClaw Bridge — expose digitalWrite/digitalRead for agent GPIO control
+// SPDX-License-Identifier: MPL-2.0
+
+#include "Arduino_RouterBridge.h"
+
+void gpio_write(int pin, int value) {
+  pinMode(pin, OUTPUT);
+  digitalWrite(pin, value ? HIGH : LOW);
+}
+
+int gpio_read(int pin) {
+  pinMode(pin, INPUT);
+  return digitalRead(pin);
+}
+
+void setup() {
+  Bridge.begin();
+  Bridge.provide("digitalWrite", gpio_write);
+  Bridge.provide("digitalRead", gpio_read);
+}
+
+void loop() {
+  Bridge.update();
+}

third_party/zeroclaw/firmware/uno-q-bridge/sketch/sketch.yaml

@@ -0,0 +1,11 @@
+profiles:
+  default:
+    fqbn: arduino:zephyr:unoq
+    platforms:
+      - platform: arduino:zephyr
+    libraries:
+      - MsgPack (0.4.2)
+      - DebugLog (0.8.4)
+      - ArxContainer (0.7.0)
+      - ArxTypeTraits (0.3.1)
+default_profile: default