Investigate using a single yml file for managing regex

Currently versions are broken out into dedicated yml files. This can lead to duplicates between versions. Explore using a single file and making iterating on rules simpler without the need to duplicate information.

Start by inspecting the repository's current version-specific YAML files and how TypeScript loads and iterates over their regex rules. Compare duplicated entries across versions and determine the configuration shape needed for a single file. Done means the project has an agreed approach that avoids duplication and simplifies rule iteration, with the affected loading and validation behavior identified.

Written by the indexing model from the issue text.