Task 2a – Remove Hardcoded CURIE Validation from DrawIO Parser

Summary

Replaced static RiC-O class, object property, and datatype property whitelists with dynamic CURIE validation driven by the parser’s prefix dictionary.
Extended the Arrow representation and downstream processing to classify datatype/object properties without relying on global lists.
Added regression baselines for legacy fixtures and comprehensive pytest coverage, including CURIE acceptance, rejection, and fixture isomorphism checks after normalisation.

Introduced _split_curie and _ensure_known_curie helpers to centralise CURIE validation using prefix dictionaries.
Updated DrawIOXMLTree._arrow to track whether an edge targets a literal or an individual by inspecting literal cells and previously parsed individuals.
Refactored individual_blocks to return both the aggregated blocks and dynamically discovered property classifications; downstream serialisation now consumes these sets.
Normalised graph comparison in tests to exclude ontology preamble and property type declarations that vary with runtime or broad property inventories.
Generated .nt baselines for every pristine .drawio fixture (skipping legacy failures) using the unmodified parser prior to refactor for regression purposes.

Consider extending prefix acquisition beyond the static get_prefixes() helper once metadata-driven prefix injection (Task 2b) is implemented.
Evaluate whether property definition triples should be generated on-demand for non-RiC namespaces or exposed through configuration knobs.

Added regenerate_baselines.py to replay the legacy parser from historical commits, backfill missing property classifications, and materialise .nt graphs for pristine fixtures when baselines are absent.
Defaulted the helper to skip overwriting existing baselines while still executing pytest so the regression suite runs against the freshly generated fixtures.
Confirmed the helper against HEAD^, observed the static-property failure, and documented the automatic fallback behaviour plus the ability to force regeneration via --force-overwrite when required.

python src/main/webapp/plugins/rdfexport/legacy/tests/regenerate_baselines.py --max-commits 50

Added a convenience shell wrapper run_regeneration.sh under src/main/webapp/plugins/rdfexport/legacy/tests/ that invokes the reproducible baseline helper with the requested commit, window, and overwrite flags.
Attempted to execute the wrapper to confirm behaviour; execution failed because the sandbox image does not include the rdflib dependency required by regenerate_baselines.py.
Left the failure details in the execution log so downstream runs can install dependencies or supply a virtual environment before rerunning the helper.

Installed the missing rdflib dependency in the sandbox environment and re-ran run_regeneration.sh without modifying repository files.
Confirmed that the helper replays commit cf8f84bb84ff83843b6726ac96aff3a2055f4275, regenerates all pristine fixture baselines with forced overwrites, and executes pytest to verify the regenerated outputs.