docs: add DNS migration task to backlog

- task-3: Migrate crypto-commons.org DNS to Cloudflare account (Done)
- Cleaned up 37 legacy DNS records

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

backlog/tasks/task-3 - Migrate-crypto-commons.org-DNS-to-Cloudflare-account.md

@@ -0,0 +1,16 @@
+---
+id: task-3
+title: Migrate crypto-commons.org DNS to Cloudflare account
+status: Done
+assignee: []
+created_date: '2025-12-06 22:38'
+labels: []
+dependencies: []
+priority: high
+---
+
+## Description
+
+<!-- SECTION:DESCRIPTION:BEGIN -->
+Moved domain to our Cloudflare account, configured CNAME records for tunnel, cleaned up 37 legacy DNS records (wildcard A record and Namecheap NS records)
+<!-- SECTION:DESCRIPTION:END -->