Fix Docker build issues and SQL worker configuration

- Fix .dockerignore to allow dist directory for Docker builds
- Add uint8arrays dependency for crypto operations
- Configure Vite for proper SQL worker bundling with absurd-sql
- Update Dockerfile with build context documentation
- Fix Nginx configuration for non-root user permissions
- Remove conflicting backend proxy configuration
- Add SQL worker polyfills to vite.config.common.mts

Resolves Docker build failures and ensures proper SQL database functionality
in containerized environment.

package.json

@@ -186,6 +186,7 @@
     "stream-browserify": "^3.0.0",
     "three": "^0.156.1",
     "ua-parser-js": "^1.0.37",
+    "uint8arrays": "^5.0.0",
     "vue": "^3.5.13",
     "vue-axios": "^3.5.2",
     "vue-facing-decorator": "^3.0.4",