fix(extractor): add type annotation for active_connections

Add type annotation to resolve mypy error for active_connections
global variable. Annotated as dict[str, ResilientRabbitMQConnection]
to track active AMQP connections by data type.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

Author: SimplicityGuy

extractor/pyextractor/extractor.py

@@ -50,7 +50,9 @@
 completed_files = set()  # Track which files have been completed
 current_task = None
 current_progress = 0.0
-active_connections = {}  # Track active AMQP connections by data type
+active_connections: dict[
+    str, ResilientRabbitMQConnection
+] = {}  # Track active AMQP connections by data type
 
 # Periodic check configuration will be loaded from config