Add byre-hands: screen capture and app control tools for agents

internal/agents/hands.go

@@ -0,0 +1,7 @@
+package agents
+
+import "g.fc.run/misc/byre/internal/mcp"
+
+func handsMCP() mcp.Stdio {
+	return mcp.Stdio{Name: "hands", Command: "byre-hands", Args: []string{}}
+}