docs: adding more details for monitoring and operations

docs/STREAMING.md

@@ -5,7 +5,7 @@ This document is the operational contract for Linear Void video ingest, playout,
 ## Production flow
 
 ```mermaid
-flowchart LR
+flowchart TD
     A["Normalized MP4 assets"] --> B["Playlist and schedule"]
     B --> C["Playout service and FFmpeg"]
     C --> D["Local HLS staging"]