Bump version to 1.0.9

Fix Wake-on-LAN: set SO_BROADCAST on UDP socket, send 3 magic packets,
expose broadcast_addr and wake timeout fields in UI, add Test Wake endpoint,
surface send errors in job status, bump default wake timeout to 180s.

internal/wol/wol.go

@@ -5,6 +5,7 @@ import (
 	"net"
 	"regexp"
 	"strings"
+	"syscall"
 	"time"
 )
 
@@ -45,7 +46,7 @@ func BuildMagicPacket(mac [6]byte) []byte {
 	return packet
 }
 
-func Send(addr string, mac [6]byte, broadcastAddr string) error {
+func Send(mac [6]byte, broadcastAddr string) error {
 	packet := BuildMagicPacket(mac)
 
 	udpAddr := &net.UDPAddr{
@@ -65,16 +66,34 @@ func Send(addr string, mac [6]byte, broadcastAddr string) error {
 	}
 	defer conn.Close()
 
+	sc, err := conn.SyscallConn()
+	if err != nil {
+		return fmt.Errorf("getting syscall conn: %w", err)
+	}
+	var setErr error
+	if err := sc.Control(func(fd uintptr) {
+		setErr = syscall.SetsockoptInt(int(fd), syscall.SOL_SOCKET, syscall.SO_BROADCAST, 1)
+	}); err != nil {
+		return fmt.Errorf("calling control: %w", err)
+	}
+	if setErr != nil {
+		return fmt.Errorf("enabling broadcast: %w", setErr)
+	}
 	if err := conn.SetWriteDeadline(time.Now().Add(5 * time.Second)); err != nil {
-		return fmt.Errorf("setting broadcast mode: %w", err)
+		return fmt.Errorf("setting write deadline: %w", err)
 	}
 
-	n, err := conn.Write(packet)
-	if err != nil {
-		return fmt.Errorf("sending magic packet: %w", err)
-	}
-	if n != len(packet) {
-		return fmt.Errorf("incomplete write: sent %d/%d bytes", n, len(packet))
+	for i := 0; i < 3; i++ {
+		n, err := conn.Write(packet)
+		if err != nil {
+			return fmt.Errorf("sending magic packet: %w", err)
+		}
+		if n != len(packet) {
+			return fmt.Errorf("incomplete write: sent %d/%d bytes", n, len(packet))
+		}
+		if i < 2 {
+			time.Sleep(100 * time.Millisecond)
+		}
 	}
 	return nil
 }