feat: rebrand Hemmelig to paste.es for cloudhost.es

- Set Spanish as default language with ephemeral/encrypted privacy focus
- Translate all user-facing strings and legal pages to Spanish
- Replace Norwegian flag with Spanish flag in footer
- Remove Hemmelig/terces.cloud links, add cloudhost.es sponsorship
- Rewrite PrivacyPage: zero data collection, ephemeral design emphasis
- Rewrite TermsPage: Spanish law, RGPD, paste.es/CloudHost.es references
- Update PWA manifest, HTML meta tags, package.json branding
- Rename webhook headers to X-Paste-Event / X-Paste-Signature
- Update API docs title and contact to paste.es / cloudhost.es

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

scripts/docker-entrypoint.sh

@@ -0,0 +1,8 @@
+#!/bin/sh
+set -e
+
+# Fix permissions on mounted volumes (runs as root)
+chown -R app:app /app/database /app/uploads 2>/dev/null || true
+
+# Run migrations and start app as app user
+exec gosu app sh -c 'npx prisma migrate deploy && exec npx tsx server.ts'