# mcp/nlp.py

import spacy

def load_model():
    try:
        return spacy.load("en_core_web_sm")
    except OSError:
        raise RuntimeError(
            "spaCy model 'en_core_web_sm' is not installed. "
            "Ensure Dockerfile downloads it at build time."
        )

nlp = load_model()

def extract_keywords(text: str):
    """Extract unique Named Entities longer than 2 characters."""
    doc = nlp(text)
    return list({ent.text for ent in doc.ents if len(ent.text.strip()) > 2})