Problem:
src/evaluation/evaluator.py contains two hard-coded absolute paths
(lines 74, 182) pointing to a developer's local machine. This breaks
the evaluator on any other machine, in CI, or in Docker.

Proposed Solution:

• Add --embeddings_dir and --csv_path CLI arguments to parse_arguments()
• Fall back to EmbeddingEnvironment.get_dir() when not provided
• Remove all absolute path references

Files to change:

• src/evaluation/evaluator.py