- import_phase1.py: skip AFT- part creation when no OEM data
- link_vehicle_parts.py: remove AFT- fallback lookup in part cache
- import_tecdoc_parts.py: add VW to TOP_BRANDS list
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Migrates 357K AFT-prefixed parts from parts table to aftermarket_parts.
Parses part_number and manufacturer from AFT-{partNo}-{manufacturer} format.
Links to OEM parts via cross-references. Batch processing with progress.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>