Add changelog with VLAN implementation status

docs/06-CHANGELOG.md

@@ -0,0 +1,30 @@
+# Infrastructure Changelog
+
+## 2026-01-25
+
+### VLAN Implementation (Prepared)
+- [VLAN] Created 6 VLANs on MikroTik bridge (10, 20, 30, 35, 40, 50)
+- [VLAN] Configured IP addresses for all VLAN interfaces
+- [VLAN] Created DHCP servers and pools for each VLAN
+- [VLAN] Added static DHCP leases mapping MACs to VLAN IPs
+- [VLAN] Configured bridge VLAN table with tagged/untagged ports
+- [VLAN] Set WiFi ports PVID=20 (Trusted VLAN default)
+- [VLAN] Added inter-VLAN firewall rules (active)
+- [VLAN] VLAN filtering NOT YET ENABLED (pending CSS326 switch config)
+- [DOCS] Added docs/11-VLAN-IMPLEMENTATION.md
+- [SCRIPTS] Added scripts/mikrotik-vlan-setup.rsc
+- [SCRIPTS] Added scripts/mikrotik-vlan-enable.rsc
+
+### MikroTik Containers
+- [CONTAINER] AdGuard Home container running on MikroTik
+- [CONTAINER] Tailscale container configured (inactive)
+- [CONTAINER] Container bridge (containers-br) with NAT
+
+### DNS Configuration
+- [DNS] AdGuard Home as primary DNS (172.17.0.2)
+- [DNS] DNS redirect rules for all clients
+- [DNS] DoT/DoH upstream configured in AdGuard
+
+## Previous Changes
+
+See git history for earlier changes.