Initial commit — DRB client (edge node) stack

Includes edge-node (FastAPI/MQTT/Discord voice), op25-container (SDR decoder),
and icecast (audio streaming).

op25-container/app/main.py

@@ -0,0 +1,11 @@
+from fastapi import FastAPI
+import routers.op25_controller as op25_controller
+from internal.logger import create_logger
+
+# Initialize logging
+LOGGER = create_logger(__name__)
+
+# Define FastAPI app
+app = FastAPI()
+
+app.include_router(op25_controller.create_op25_router(), prefix="/op25")