docs(btdb): register BTDB Manager in the Overview docker registry; record the local rig

- ZB.MOM.WW.Overview appsettings.Docker.json: application "BTDB Manager", instance manager at
  http://zb-btdb-manager:9877 (HasActiveRole false); docker/README.md fleet row.
- CLAUDE.md BTDB row and sister-project-history/btdb.md §7/§9: docker/ layout, the
  dacpac + SQL CLR side-project build, scadabridge-mssql as the BT host.

Claude-Session: https://claude.ai/code/session_015dYqtaTxgf6NK2KuwriMSg

ZB.MOM.WW.Overview/docker/README.md

@@ -25,11 +25,14 @@ The dev rigs publish only some node ports to the host:
 | OtOpcUa central-1/2 | container `:9000` | **no** — only Traefik `:9200`, load-balanced across the pair |
 | OtOpcUa site-\* (4) | container `:8080` | **no** — not published |
 | HistorianGateway | container `:5220` | yes — `localhost:5220` |
+| BTDB Manager | container `:9877` | yes — `localhost:9877` |
 | MxAccessGateway | windev `:5130` | yes, with the VPN up |
 
 So a host-run dashboard can only see part of the fleet. This stack joins the three rig networks
 (`otopcua-dev_default`, `scadabridge-net`, `zb-historiangw_default`, all declared `external`) and
-addresses every node by container DNS name, which is how it sees all of them.
+addresses every node by container DNS name, which is how it sees all of them. BTDB Manager
+(`~/Desktop/BTDB/docker`) sits on `scadabridge-net` too, because its BT database lives on
+ScadaBridge's infra MSSQL container, so no fourth network is needed for it.
 
 Ports above were established by probing the running rigs on 2026-07-24, **not** read off the
 compose files — the two disagree. In particular OtOpcUa's site nodes serve health on `:8080`, not

ZB.MOM.WW.Overview/src/ZB.MOM.WW.Overview/appsettings.Docker.json

@@ -25,6 +25,8 @@
   //                                  LocalDb sync re-bind the primary HTTP port)
   //   ScadaBridge central   :5000
   //   ScadaBridge site      :8084   (MetricsPort; MapZbHealth lands here from the site-health work)
+  //   BTDB Manager          :9877   (BTDB/docker; single instance, joins scadabridge-net for BT;
+  //                                  /health/ready is 503 whenever that database is unreachable)
   //
   // ManagementUrl values stay host-relative (localhost:*) on purpose: they are followed by the
   // OPERATOR'S BROWSER, not by this container, so container DNS names would be dead links.
@@ -146,6 +148,18 @@
           }
         ]
       },
+      {
+        "Name": "BTDB Manager",
+        "ManagementLabel": "Manager",
+        "Instances": [
+          {
+            "Name": "manager",
+            "BaseUrl": "http://zb-btdb-manager:9877",
+            "ManagementUrl": "http://localhost:9877/",
+            "HasActiveRole": false
+          }
+        ]
+      },
       {
         "Name": "MxAccessGateway",
         "ManagementLabel": "Dashboard",