Use one build number across phone, Mac and Status

api/openapi.yaml

@@ -2312,13 +2312,14 @@ components:
 
     ConnectedClient:
       type: object
-      required: [id, login, host, device, commit, connected_at]
+      required: [id, login, host, device, commit, build, connected_at]
       properties:
         id: { type: string, description: The ID the app made up when it started, from its Byre-Client header. }
         login: { type: string }
         host: { type: string, description: The device's name from its Byre-Host header. }
         device: { type: string, description: "The kind of device the app runs on (Mac or iPhone), from its Byre-Device header." }
         commit: { type: string, description: The git commit the app was built from, from its Byre-Commit header; empty when the client sent none. }
+        build: { type: string, description: "The app's build number (its CFBundleVersion, the Unix time of that commit), from its Byre-Build header; empty when the client sent none." }
         connected_at: { type: string, format: date-time, description: When the client's WebSocket connected. }
         last_action_at: { type: string, format: date-time, description: When byre last received a request the human made from this client since byre started; absent when none. }
         sync: { $ref: "#/components/schemas/ClientSync" }