- Create custom 404 page matching blog layout and Eric's voice
- Includes helpful navigation links to home, tags, weeknotes, search
- References blog migrations since 2001 in a characteristically honest way
- Server-side nginx config added to blog.kestrelsnest.social.d/custom_errors.conf
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Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
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