docs: Add DNS configuration guide for website migration

- Explain that DNS records likely don't need changes
- Document verification steps for Cloudflare
- Provide GitHub Pages custom domain setup instructions
- Include troubleshooting guide

Addresses question about Cloudflare DNS updates after migration.

Author: ishaileshpant

DNS_CONFIGURATION.md

@@ -0,0 +1,123 @@
+# DNS Configuration for Website Migration
+
+## Overview
+
+After migrating the website from `reccaller-ai/reccall` to `reccaller-ai/websites`, the DNS configuration may need to be verified or updated.
+
+## Current Setup
+
+- **Custom Domain**: `reccaller.ai`
+- **CNAME File**: Present in `websites` repository
+- **GitHub Organization**: `reccaller-ai`
+- **Old Repository**: `reccaller-ai/reccall` (website archived)
+- **New Repository**: `reccaller-ai/websites` (active website)
+
+## DNS Configuration Requirements
+
+### ✅ Good News: DNS Records Likely Don't Need Changes
+
+Since both repositories are under the same GitHub organization (`reccaller-ai`), and the custom domain (`reccaller.ai`) remains the same, **Cloudflare DNS records typically don't need to be changed**.
+
+### 📋 Verification Steps
+
+#### 1. Check Current Cloudflare DNS Records
+
+In Cloudflare dashboard, verify your DNS records for `reccaller.ai`:
+
+**For Apex Domain (reccaller.ai):**
+- **Type**: `A` records
+- **IP Addresses**: Should point to GitHub Pages IPs:
+  - `185.199.108.153`
+  - `185.199.109.153`
+  - `185.199.110.153`
+  - `185.199.111.153`
+- **Proxy Status**: Should be "DNS only" (gray cloud) ☁️
+
+**For WWW Subdomain (www.reccaller.ai):**
+- **Type**: `CNAME`
+- **Name**: `www`
+- **Target**: `reccaller-ai.github.io` (or your GitHub Pages URL)
+- **Proxy Status**: Should be "DNS only" (gray cloud) ☁️
+
+#### 2. Configure GitHub Pages Custom Domain
+
+**In the new repository** (`reccaller-ai/websites`):
+
+1. Go to: https://github.com/reccaller-ai/websites/settings/pages
+2. Under **"Custom domain"**, enter: `reccaller.ai`
+3. Click **"Save"**
+4. GitHub will verify the DNS configuration
+5. Enable **"Enforce HTTPS"** (recommended)
+
+#### 3. Verify DNS Propagation
+
+After updating GitHub Pages settings:
+
+```bash
+# Check DNS records
+dig reccaller.ai +short
+
+# Check GitHub Pages verification
+# GitHub will show verification status in repository settings
+```
+
+### ⚠️ When DNS Changes ARE Needed
+
+DNS changes are only needed if:
+
+1. **Different GitHub Account/Organization**: If you moved to a different GitHub account/org, the GitHub Pages URL changes, and DNS needs updating.
+
+2. **Different Domain**: If you're using a different domain name.
+
+3. **Previous DNS Pointed to Specific Repo**: If your DNS was configured to point to a specific repository path (unlikely for apex domains).
+
+### ✅ What We Already Have Correct
+
+1. ✅ `CNAME` file exists in `websites` repository with `reccaller.ai`
+2. ✅ Same GitHub organization (`reccaller-ai`)
+3. ✅ Same custom domain (`reccaller.ai`)
+
+### 📝 Action Items
+
+1. **In GitHub** (websites repository):
+   - ✅ CNAME file already present
+   - ⚠️ **REQUIRED**: Enable GitHub Pages with custom domain in repository settings
+   - ⚠️ **REQUIRED**: Configure custom domain in Settings → Pages
+
+2. **In Cloudflare**:
+   - ✅ **Verify** DNS records are correct (likely no changes needed)
+   - ✅ **Confirm** A records point to GitHub Pages IPs
+   - ✅ **Confirm** Proxy status is "DNS only" (not proxied)
+
+3. **Verification**:
+   - Wait for DNS propagation (5-60 minutes)
+   - Test `reccaller.ai` in browser
+   - Verify HTTPS certificate is issued
+
+## Summary
+
+**Most Likely Scenario**: No Cloudflare DNS changes needed.
+
+**Why**: Same organization, same domain, just different repository. GitHub Pages handles the routing based on the `CNAME` file and repository settings.
+
+**Only Action Required**: 
+- Enable GitHub Pages in `reccaller-ai/websites` repository settings
+- Configure custom domain in GitHub Pages settings
+- Verify DNS records in Cloudflare (should already be correct)
+
+## Troubleshooting
+
+If the site doesn't work after migration:
+
+1. Check GitHub Pages deployment status
+2. Verify CNAME file in repository
+3. Check DNS records in Cloudflare match GitHub Pages requirements
+4. Wait for DNS propagation (can take up to 48 hours, usually 5-60 minutes)
+5. Check GitHub Pages domain verification status
+
+## Reference Links
+
+- GitHub Pages Custom Domain Docs: https://docs.github.com/en/pages/configuring-a-custom-domain-for-your-github-pages-site
+- Cloudflare DNS Settings: https://dash.cloudflare.com
+- GitHub Pages Settings: https://github.com/reccaller-ai/websites/settings/pages
+