- Create setup.html with centered card on dark OKLCH background
- Validate URL via URL constructor, reject malformed input (T-06-01)
- Warn on non-HTTPS non-localhost URLs but allow (internal LAN support)
- Persist server_url to tauri-plugin-store config.json
- Navigate WebView to configured server after save
- All visible strings in German (Verbinden, Server-URL eingeben, etc.)
- Design tokens match Tessera OKLCH color system (primary, dark bg)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
schalli
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