Fix Netlify Identity confirmation email authentication flow

- Create dedicated /auth page to handle confirmation, recovery, and invite tokens
- Add proper redirects in _redirects and netlify.toml for token handling
- Update main layout to automatically redirect authentication tokens to auth page
- Add Turkish authentication interface with loading states and error handling
- Provide fallback redirect mechanisms for different token types
- Update documentation with current setup status and fixes

This resolves the issue where confirmation emails linked to hash URLs that didn't work.
Now users will be properly guided through the authentication process.

🤖 Generated with Claude Code

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

DECAP_CMS_SETUP.md

@@ -118,19 +118,23 @@ Netlify redirect rules for admin routing
 
 ## Troubleshooting
 
-### Current Error: "Unable to access identity settings"
+### Fixed Issues:
 
-**This specific error means:**
-- Netlify Identity service is not enabled on your site
-- Git Gateway is not enabled 
-- Or both services need to be configured
+✅ **"Unable to access identity settings"** - This was fixed by enabling Identity and Git Gateway in Netlify
+✅ **Confirmation email links not working** - Created `/auth` page to handle authentication tokens
 
-**Solution steps:**
+### Current Setup Status:
+
+The site now has:
+- Custom authentication handler at `/auth`
+- Proper redirect handling for confirmation emails
+- Automatic routing from hash-based tokens to query parameters
+
+**If you're still getting confirmation email issues:**
 1. Go to https://app.netlify.com/sites/ym1ktc/settings/identity
-2. If Identity is not enabled, click "Enable Identity"
-3. Go to Services tab and enable "Git Gateway"
-4. Wait a few minutes for services to activate
-5. Try accessing `/admin/` again
+2. Check that Identity is enabled
+3. Go to Services tab and ensure "Git Gateway" is enabled
+4. The confirmation links should now work properly
 
 ### Common Issues: