- Created nonfiction_taxonomy.py with:
- ReaderPurpose enum (6 purposes)
- StructuralPattern enum (7 patterns)
- PURPOSE_STRUCTURE_MATRIX for intelligent selection
- NONFICTION_FRAMEWORKS (14+ frameworks)
- select_framework() function
- Created docs/NONFICTION_PIPELINE.md documenting the workflow
This is the foundation for Issue #16 (Nonfiction Underdeveloped)