refactor(macos): dedupe UI, pairing, and runtime helpers

apps/macos/Sources/OpenClaw/AgentWorkspaceConfig.swift

@@ -0,0 +1,30 @@
+import Foundation
+
+enum AgentWorkspaceConfig {
+    static func workspace(from root: [String: Any]) -> String? {
+        let agents = root["agents"] as? [String: Any]
+        let defaults = agents?["defaults"] as? [String: Any]
+        return defaults?["workspace"] as? String
+    }
+
+    static func setWorkspace(in root: inout [String: Any], workspace: String?) {
+        var agents = root["agents"] as? [String: Any] ?? [:]
+        var defaults = agents["defaults"] as? [String: Any] ?? [:]
+        let trimmed = workspace?.trimmingCharacters(in: .whitespacesAndNewlines) ?? ""
+        if trimmed.isEmpty {
+            defaults.removeValue(forKey: "workspace")
+        } else {
+            defaults["workspace"] = trimmed
+        }
+        if defaults.isEmpty {
+            agents.removeValue(forKey: "defaults")
+        } else {
+            agents["defaults"] = defaults
+        }
+        if agents.isEmpty {
+            root.removeValue(forKey: "agents")
+        } else {
+            root["agents"] = agents
+        }
+    }
+}