Fix regulatory domain persistence for 5GHz AP on boot

Problem: wlan1 regulatory domain not set on boot, defaults to 2.4GHz-only mode,
preventing channel 149 (5GHz) from being available. hostapd fails on startup.

Solution:
1. Modified regdomain.service to:
   - Run BEFORE hostapd/hostapd-2g services (Before= directive)
   - Run earlier in boot (After= sysinit.target)
   - RemainAfterExit=yes to persist setting

2. Added 80-regdomain.rules udev rule:
   - Triggers on regulatory device changes
   - Executes 'iw reg set CA' automatically

3. Added hostapd drop-in config:
   - Explicitly requires regdomain.service
   - Adds Wants= to ensure it starts

This ensures the regulatory domain is set BEFORE hostapd attempts to use
channel 149, fixing the boot-time AP failure loop.

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

ap/80-regdomain.rules

@@ -0,0 +1,3 @@
+# Set wireless regulatory domain on boot
+# Trigger when regulatory device appears
+SUBSYSTEM=="regulatory", ACTION=="change", RUN+="/usr/sbin/iw reg set CA"

ap/hostapd-regdomain.conf

@@ -0,0 +1,4 @@
+# Ensure regdomain.service runs before hostapd
+[Unit]
+After=regdomain.service
+Wants=regdomain.service

ap/regdomain.service

@@ -1,9 +1,10 @@
 [Unit]
 Description=Set wireless regulatory domain
-After=network-pre.target
-Before=NetworkManager.service
+After=network-pre.target sysinit.target
+Before=hostapd.service hostapd-2g.service NetworkManager.service
 [Service]
 Type=oneshot
+RemainAfterExit=yes
 ExecStart=/usr/sbin/iw reg set CA
 [Install]
 WantedBy=multi-user.target

deploy.sh

@@ -116,9 +116,11 @@ fi
 echo "== access point =="
 install_rendered ap/hostapd.conf            /etc/hostapd/hostapd.conf
 install -D -m0644 ap/hostapd-restart.conf   /etc/systemd/system/hostapd.service.d/restart.conf
+install -D -m0644 ap/hostapd-regdomain.conf /etc/systemd/system/hostapd.service.d/regdomain.conf
 install -D -m0644 ap/default-hostapd        /etc/default/hostapd
 install_rendered ap/hostapd-2g.conf         /etc/hostapd/hostapd-2g.conf
 install_rendered ap/hostapd-2g.service      /etc/systemd/system/hostapd-2g.service
+install -D -m0644 ap/hostapd-regdomain.conf /etc/systemd/system/hostapd-2g.service.d/regdomain.conf
 install_rendered ap/11-van-ap-2g.network    /etc/systemd/network/11-van-ap-2g.network
 install -D -m0644 ap/van-ap-watchdog-2g.service /etc/systemd/system/van-ap-watchdog-2g.service
 install -D -m0755 ap/van-ap-watchdog        /usr/local/sbin/van-ap-watchdog
@@ -139,6 +141,7 @@ install_rendered ap/van-ap-unmanaged.conf   /etc/NetworkManager/conf.d/van-ap-un
 ln -sfn /dev/null /etc/systemd/network/zzzz-dracut-default.network
 install -D -m0644 ap/nftables.conf          /etc/nftables.conf
 install -D -m0644 ap/regdomain.service      /etc/systemd/system/regdomain.service
+install -D -m0644 ap/80-regdomain.rules     /etc/udev/rules.d/80-regdomain.rules
 install -D -m0644 ap/rtw89.conf             /etc/modprobe.d/rtw89.conf
 install -D -m0644 ap/99-van-router.conf     /etc/sysctl.d/99-van-router.conf