- Created opus_orchestrator/nonfiction/classifier.py
- PurposeClassifier class with keyword-based classification
- LLM-enhanced classification (optional)
- ReaderPurpose enum (6 purposes)
- ClassificationResult dataclass
- Keyword classification covers:
- LEARN_HANDS_ON: how to, learn to, tutorial, skills, etc.
- UNDERSTAND: understand, why, concept, mental model, etc.
- TRANSFORM: change, become, improve, habits, etc.
- DECIDE: decide, choose, compare, vs, analysis
- REFERENCE: manual, handbook, comprehensive, API
- BE_INSPIRED: inspire, story, journey, biography
- Tests pass for all 6 purposes with high confidence
This is the foundation for the entire nonfiction pipeline (Issue #18).
