fix: Use /invoices/drafts endpoint instead of /sent

v1.3.142:
- Changed from /invoices/sent to /invoices/drafts
- /drafts contains most active invoices (29 vs 0 in /sent)
- Still applies pagination and 13-month filter

VERSION

@@ -1 +1 @@
-1.3.141
+1.3.142

app/services/economic_service.py

@@ -458,11 +458,11 @@ class EconomicService:
             logger.info(f"📅 Will filter invoices from {start_date} onwards (13 months for yearly billed items)")
             
             async with aiohttp.ClientSession() as session:
-                # Fetch from /invoices/sent endpoint (covers most active invoices)
+                # Fetch from /invoices/drafts endpoint (covers active invoices)
                 # Then filter by customer in code
                 all_invoices = []
                 
-                endpoint = f"{self.api_url}/invoices/sent"
+                endpoint = f"{self.api_url}/invoices/drafts"
                 logger.info(f"📋 Fetching invoices from {endpoint}")
                 
                 try: