Upgrade Rails from 8.0.2.1 to 8.1.1

[cirdes]

Summary

This PR upgrades Rails from version 8.0.2.1 to 8.1.1, bringing the application up to date with the latest Rails 8.1 features and improvements.

Changes

Core Upgrade

• Rails version: Upgraded from 8.0.2.1 to 8.1.1
• Configuration defaults: Updated from 8.0 to 8.1 in config/application.rb
• Module name: Fixed module name from RubyUIWeb to RubyUiWeb for consistency
• rails app:update: To generate missing files

Database Migrations

• Added Active Storage migrations:
  • add_service_name_to_active_storage_blobs
  • create_active_storage_variant_records
  • remove_not_null_on_active_storage_blobs_checksum
• Updated schema version to 8.1

Configuration Updates

• Development environment:
  • Added verbose redirect logs
  • Added asset quiet mode
  • Code style improvements (hash formatting)
• Production environment:
  • Enabled STDOUT logging with tagged logging
  • Code style improvements
  • Updated comments
• Test environment:
  • Code style improvements
• Puma configuration:
  • Updated comments for worker configuration
• Content Security Policy:
  • Added comments for nonce auto-configuration

Error Pages

Added default missing error pages

• 400.html - Bad Request
• 404.html - Not Found
• 406-unsupported-browser.html - Unsupported Browser
• 422.html - Unprocessable Entity
• 500.html - Internal Server Error

Assets

• Added public/icon.png and public/icon.svg for favicon support

Setup Script

• Updated bin/setup to support --reset flag for database reset