add: scripts for invoice-order matching and SKU discovery

Analysis scripts to match GoMag orders with Oracle invoices by
date/client/total, then compare line items by price to discover
SKU → id_articol mappings. Generates SQL for nom_articole codmat
updates and CSV for ARTICOLE_TERTI repackaging/set mappings.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

scripts/count_orders.py

@@ -0,0 +1,30 @@
+import sqlite3, sys
+sys.stdout.reconfigure(encoding='utf-8', errors='replace')
+
+db = sqlite3.connect(r'C:\gomag-vending\api\data\import.db')
+c = db.cursor()
+
+c.execute("SELECT COUNT(*), MIN(order_date), MAX(order_date) FROM orders")
+total, min_d, max_d = c.fetchone()
+print(f"Total orders: {total} (from {min_d} to {max_d})")
+
+c.execute("SELECT status, COUNT(*) FROM orders GROUP BY status ORDER BY COUNT(*) DESC")
+print("\nBy status:")
+for r in c:
+    print(f"  {r[0]:20s} {r[1]:5d}")
+
+c.execute("SELECT COUNT(*) FROM orders WHERE status IN ('IMPORTED','ALREADY_IMPORTED')")
+print(f"\nImported (matchable): {c.fetchone()[0]}")
+
+c.execute("SELECT COUNT(*) FROM order_items")
+print(f"Total order_items: {c.fetchone()[0]}")
+
+c.execute("""
+    SELECT COUNT(DISTINCT oi.sku)
+    FROM order_items oi
+    JOIN orders o ON oi.order_number = o.order_number
+    WHERE o.status IN ('IMPORTED','ALREADY_IMPORTED')
+""")
+print(f"Unique SKUs in imported orders: {c.fetchone()[0]}")
+
+db.close()