Rename the add-on Bookmarks API and drop CLI copy from the product UI.

tools/install-native-host.ps1

@@ -23,7 +23,7 @@ if (Test-Path $TokenPath) {
 
 $manifest = @{
     name = $HostName
-    description = "Firefox Agent Bridge native host"
+    description = "Bookmarks API native host"
     path = $CmdPath
     type = "stdio"
     allowed_extensions = @($ExtensionId)
@@ -38,4 +38,4 @@ Write-Host "registered $regPath"
 
 Write-Host ""
 Write-Host "Load the add-on, then use the toolbar icon → Manage clients to generate a secret."
-Write-Host "Put that fab_… token in FAB_TOKEN for scripts. Do not store it under $StateDir."
+Write-Host "Store that secret with your other secrets. Do not keep it under $StateDir."