Fork from QuoteForge → PriceForge

Renamed module path git.mchus.pro/mchus/quoteforge → git.mchus.pro/mchus/priceforge,
renamed package quoteforge → priceforge, moved binary from cmd/qfs to cmd/pfs.

migrations/001_add_lot_category.sql

@@ -0,0 +1,11 @@
+-- Migration: Add lot_category column to lot table
+-- Run this migration manually on the database
+
+-- Add lot_category column to lot table
+ALTER TABLE lot ADD COLUMN lot_category VARCHAR(50) DEFAULT NULL;
+
+-- Create index for faster lookups
+CREATE INDEX idx_lot_category ON lot(lot_category);
+
+-- Update existing lots: extract category from lot_name (first part before underscore)
+UPDATE lot SET lot_category = SUBSTRING_INDEX(lot_name, '_', 1) WHERE lot_category IS NULL;