Merge branch 'master' into hayat01sh1da/python/introduce-mypy-typechecking

Author: hayat01sh1da

SECURITY.md

@@ -8,7 +8,7 @@
 | Component     | Version(s) / Tooling               | Notes                                                                                    |
 | ------------- | ---------------------------------- | ---------------------------------------------------------------------------------------- |
 | OS baseline   | WSL (Ubuntu 25.10)                 | Shared environment across tracks.                                                        |
-| Ruby sorter   | Ruby 4.0.2 (`.ruby-version`)       | Uses Ruby stdlib (`JSON`, `FileUtils`). Declare extra gems if introduced.                |
+| Ruby sorter   | Ruby 4.0.3 (`.ruby-version`)       | Uses Ruby stdlib (`JSON`, `FileUtils`). Declare extra gems if introduced.                |
 | Python sorter | CPython 3.14.4 (`.python-version`) | Uses Python stdlib (`json`, `argparse`). Add `requirements.txt` for third-party modules. |
 
 ## Backward Compatibility

ruby/README.md

@@ -1,6 +1,6 @@
 ## 1. Environment
 
-- Ruby 4.0.2
+- Ruby 4.0.3
 
 ## 2. Install Gems via Gemfile and Bundler