Improve MCP tool selection guidance

platform/mcp/compose.yaml

@@ -92,6 +92,9 @@ services:
       # The local fork adds bounded read-only Sonarr pseudo-actions. Keep the
       # patch explicit until upstream publishes a self-contained 2.x image.
       - ${ARR_SONARR_PATCH:-./patches/mcp_sonarr.py}:/usr/local/lib/python3.13/site-packages/arr_mcp/mcp/mcp_sonarr.py:ro
+      # Upstream's generic "Execute any Radarr API action" text gives small
+      # models no routing boundary. This overlay changes guidance only.
+      - ${ARR_RADARR_PATCH:-./patches/mcp_radarr.py}:/usr/local/lib/python3.13/site-packages/arr_mcp/mcp/mcp_radarr.py:ro
     networks: [tools, egress]
 
   mcp-unraid-official: