feat(install): rewrite Install/Refresh/Uninstall-Services.ps1 for v2 fused Host (Task 62)

- Install-Services.ps1: installs OtOpcUaHost (single fused binary) replacing
  the v1 OtOpcUa + OtOpcUaAdmin pair. Required -Roles param writes OTOPCUA_ROLES
  to the service env so Program.cs decides what to mount (admin / driver / both).
  -HttpPort param (default 9000) writes ASPNETCORE_URLS on admin-role nodes.
  sc.exe restart-on-failure: 5s, 30s, 60s; reset counter after 24h clean run.
  Wonderware historian sidecar install logic preserved from v1.

- Uninstall-Services.ps1: removes OtOpcUaHost + cleans up legacy v1 names
  (OtOpcUa, OtOpcUaAdmin) and the long-retired OtOpcUaGalaxyHost.

- Refresh-Services.ps1: updated service names (OtOpcUa -> OtOpcUaHost), publish
  path (ZB.MOM.WW.OtOpcUa.Server -> ZB.MOM.WW.OtOpcUa.Host), process names
  (OtOpcUa.Server -> OtOpcUa.Host). Switched nssm stop/start calls to
  Stop-Service/Start-Service so the script works whether the underlying
  service was installed via nssm or sc.exe.

scripts/install/Uninstall-Services.ps1

@@ -3,16 +3,17 @@
     Stops + removes the v2 services. Mirrors Install-Services.ps1.
 
 .DESCRIPTION
-    PR 7.2 retired the legacy OtOpcUaGalaxyHost service. Galaxy access now flows
-    through the in-process GalaxyDriver against a separately-installed mxaccessgw.
-    OtOpcUaGalaxyHost is included in the cleanup loop below so this script safely
-    removes it from any rig still carrying the legacy service from a pre-7.2
-    install.
+    Removes the v2 OtOpcUaHost service plus the optional OtOpcUaWonderwareHistorian
+    sidecar. Also cleans up legacy service names from prior installs:
+    - OtOpcUa (v1 server) — replaced by OtOpcUaHost in v2
+    - OtOpcUaAdmin (v1 admin) — fused into OtOpcUaHost in v2
+    - OtOpcUaGalaxyHost (pre-7.2 Galaxy host) — long-retired
 #>
 [CmdletBinding()] param()
 $ErrorActionPreference = 'Continue'
 
-foreach ($svc in 'OtOpcUa', 'OtOpcUaWonderwareHistorian', 'OtOpcUaGalaxyHost') {
+foreach ($svc in 'OtOpcUaHost', 'OtOpcUaWonderwareHistorian',
+                 'OtOpcUa', 'OtOpcUaAdmin', 'OtOpcUaGalaxyHost') {
     if (Get-Service $svc -ErrorAction SilentlyContinue) {
         Write-Host "Stopping $svc..."
         Stop-Service $svc -Force -ErrorAction SilentlyContinue