Add RSpec-Sorbet integration and enhance type safety across the codebase

- Added `rspec-sorbet` gem to the Gemfile for improved type checking in tests.
- Updated various Ruby files to enforce strict typing with Sorbet, enhancing type safety.
- Refactored job classes and models to include type signatures, ensuring better type checking and documentation.
- Modified tests to utilize RSpec-Sorbet features, improving clarity and maintainability.

These changes aim to enhance the overall stability and maintainability of the codebase.

.vscode/launch.json

@@ -5,8 +5,7 @@
       "type": "rdbg",
       "name": "Attach rdbg",
       "request": "attach",
-      "rdbgPath": "/usr/local/rvm/gems/default/bin/rdbg",
-      "debugPort": "/tmp/rdbg-1000/rdbg-45938"
+      "rdbgPath": "export GEM_HOME=/usr/local/rvm/gems/default && bundle exec rdbg"
     }
   ]
 }