fix: sync auto-assigns all active extensions to customer

Ensures every sync call first fills in any missing extension
assignments, so new extensions are automatically available to
all customers without manual intervention.

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

server.py

@@ -365,6 +365,11 @@ def sync_customer_extensions(customer):
     api_key = customer['espocrm_api_key']
     cid = customer['id']
 
+    # 0. Ensure all active extensions are assigned to this customer
+    query("""INSERT INTO customer_extensions (customer_id, extension_id, auto_update, license_status)
+        SELECT %s, id, true, 'active' FROM extensions WHERE is_active
+        ON CONFLICT (customer_id, extension_id) DO NOTHING""", (cid,), fetch=None)
+
     # 1. Query EspoCRM for installed extensions
     headers = {'Espo-Authorization': api_key}
     req = urllib.request.Request(f'{espo_url}/api/v1/Extension?select=name,version&maxSize=200',