[management] Add agent_network_only account setting (#6736)

* [management] Add agent_network_only account setting

* [management] Load agent_network_only in pgx account loader and cover persistence

shared/management/http/api/openapi.yml

@@ -375,6 +375,10 @@ components:
           description: Enables or disables client metrics push for all peers in the account
           type: boolean
           example: false
+        agent_network_only:
+          description: Limits the dashboard to the Agent Network surface for this account. Set for accounts created via netbird.ai signups and can be disabled later.
+          type: boolean
+          example: false
         embedded_idp_enabled:
           description: Indicates whether the embedded identity provider (Dex) is enabled for this account. This is a read-only field.
           type: boolean

shared/management/http/api/types.gen.go

@@ -1647,6 +1647,9 @@ type AccountRequest struct {
 
 // AccountSettings defines model for AccountSettings.
 type AccountSettings struct {
+	// AgentNetworkOnly Limits the dashboard to the Agent Network surface for this account. Set for accounts created via netbird.ai signups and can be disabled later.
+	AgentNetworkOnly *bool `json:"agent_network_only,omitempty"`
+
 	// AutoUpdateAlways When true, updates are installed automatically in the background. When false, updates require user interaction from the UI.
 	AutoUpdateAlways *bool `json:"auto_update_always,omitempty"`