Show connected clients and their last human action in Status

mac/Sources/Byre/Status.swift

@@ -4,7 +4,7 @@ import SwiftUI
 typealias AgentProcess = Components.Schemas.AgentProcess
 typealias Zombie = Components.Schemas.Zombie
 
-private let refreshKinds: Set<String> = ["session.created", "session.state", "task.created", "task.merged", "task.discarded", "project.created", "admin.health"]
+private let refreshKinds: Set<String> = ["session.created", "session.state", "task.created", "task.merged", "task.discarded", "project.created", "admin.health", "admin.clients"]
 
 private let zombieLabel: [Zombie.KindPayload: String] = [
     .runningWithoutProcess: "Running with no process",
@@ -88,6 +88,8 @@ struct StatusView: View {
                         if vendors.isEmpty {
                             Text("No vendor has reported a rate-limit status since byre started.").foregroundStyle(Palette.muted)
                         }
+                        section("Clients")
+                        ClientTable(status: status)
                         section("Server")
                         ServerRows(status: status)
                     }
@@ -377,6 +379,36 @@ private struct PaceBar: View {
     }
 }
 
+private struct ClientTable: View {
+    let status: ServerStatus
+
+    var body: some View {
+        if status.clients.isEmpty {
+            Text("No clients connected.").foregroundStyle(Palette.muted)
+        } else {
+            Grid(alignment: .leading, horizontalSpacing: 12, verticalSpacing: 2) {
+                GridRow {
+                    ForEach(["Mac", "User", "Build", "Connected", "Last action"], id: \.self) { h in
+                        Text(h).font(Fonts.font(11)).foregroundStyle(Palette.muted)
+                    }
+                }
+                Divider().overlay(Palette.border)
+                ForEach(Array(status.clients.enumerated()), id: \.offset) { _, c in
+                    GridRow {
+                        Text(c.host.isEmpty ? "—" : c.host)
+                        Text(c.login)
+                        Text(c.commit.isEmpty ? "—" : String(c.commit.prefix(8))).help(c.commit)
+                        Text(since(c.connectedAt))
+                        Text(c.lastActionAt.map(since) ?? "—")
+                    }
+                    .textSelection(.enabled)
+                    Divider().overlay(Palette.border)
+                }
+            }
+        }
+    }
+}
+
 private struct ServerRows: View {
     let status: ServerStatus