feat: 月度模式全面参数化 - 移除硬编码日期，前后端按月动态查询

sql/etl_dim_supplier.sql

@@ -0,0 +1,19 @@
+-- Step 1: 填充 dim_supplier 从配送流水去重
+INSERT INTO analytics.dim_supplier (supplier_code, supplier_name, supplier_type, contact_person, contact_phone, region, status, created_at, updated_at)
+SELECT d.supplier_code, d.supplier_name, d.supplier_category, d.supplier_contact, d.supplier_phone,
+  CASE WHEN d.supplier_address ~ '北京' THEN '北京' WHEN d.supplier_address ~ '福建' THEN '福建'
+    WHEN d.supplier_address ~ '四川' THEN '四川' WHEN d.supplier_address ~ '山东' THEN '山东'
+    WHEN d.supplier_address ~ '新疆' THEN '新疆' WHEN d.supplier_address ~ '河北' THEN '河北'
+    WHEN d.supplier_address ~ '天津' THEN '天津' WHEN d.supplier_address ~ '内蒙古' THEN '内蒙古'
+    WHEN d.supplier_address ~ '甘肃' THEN '甘肃' WHEN d.supplier_address ~ '宁夏' THEN '宁夏'
+    ELSE '其他' END,
+  '启用', now(), now()
+FROM (
+  SELECT DISTINCT ON (supplier_code) supplier_code, supplier_name, supplier_category, supplier_contact, supplier_phone, supplier_address
+  FROM distribution_detail_records WHERE supplier_code IS NOT NULL
+  ORDER BY supplier_code, (supplier_phone IS NOT NULL AND supplier_phone != '') DESC, (supplier_address IS NOT NULL AND supplier_address != '') DESC
+) d
+ON CONFLICT (supplier_code) DO UPDATE SET
+  supplier_name = EXCLUDED.supplier_name, supplier_type = EXCLUDED.supplier_type,
+  contact_person = EXCLUDED.contact_person, contact_phone = EXCLUDED.contact_phone,
+  region = EXCLUDED.region, updated_at = now();