Fedimint UI HTML/CSS reference absolute /assets/* paths; under /app/fedimint/
those hit the main SPA, not the fedimint container, so the UI renders
unstyled. Add the proven sub_filter asset-rewrite pattern (as indeedhub/
botfights use) to the /app/fedimint/ block in the nginx template + https
snippet (also rewrites url(...) for the CSS background image). Bootstrap
self-heal for already-deployed nodes is the documented resume point.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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