temporary PR for Dev

[JJ-Author]

this is a temporary pull request in order to check how well older commits from the dev branch can be merged into current master

Summary by CodeRabbit

• New Features

  • Improved abstract extraction with new Plain and HTML extractors and an option to auto-clean broken brackets in abstracts.
  • Validator groups (LEFT/RIGHT/DEFAULT) for finer-grained construct validation.

• Improvements

  • Default configurations updated to use the HTML abstracts extractor; new plain abstracts config available.
  • Enhanced CI/validation with additional triggers, generators, and coverage for abstracts and IRIs.

• Documentation

  • Updated README links/formatting.
  • Overhauled issue template for clearer reporting.

• Tests

  • Added SHACL rules and instances; expanded CI test coverage.
  • New utilities for test grouping and dataset file handling.