- POST /api/sources/suggest: derive source definition from CSV upload
- GET /api/sources/:name/import-log: query import history
- GET /api/rules/:id/test: test rule pattern against real records
- rules: add function_type (extract/replace) and flags columns
- get_unmapped_values: include up to 3 sample records per value
- npm start now uses nodemon for auto-reload
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
