feat(ansible): add OpenWrt dlink AP configuration

Add community.openwrt collection, dlink host to inventory,
openwrt role with system/network/firewall tasks, and two
playbooks: dlink-init.yml for one-time bootstrap from factory
IP, and openwrt.yml for ongoing idempotent configuration.

Network: MGMT untagged + LAN (vlan2) tagged on WAN port trunk
to MikroTik ether3. Firewall zones replace factory WAN/LAN
with mgmt (input ACCEPT) and lan (forward ACCEPT, AP mode).

ansible/roles/openwrt/handlers/main.yml

@@ -0,0 +1,14 @@
+---
+- name: Reload network
+  community.openwrt.nohup:
+    command: /etc/init.d/network reload
+  ignore_unreachable: true
+
+- name: Reload firewall
+  community.openwrt.service:
+    name: firewall
+    state: restarted
+
+- name: Reload wireless
+  community.openwrt.command:
+    cmd: wifi reload