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

apps/macos/Sources/OpenClaw/JSONObjectExtractionSupport.swift

@@ -0,0 +1,16 @@
+import Foundation
+
+enum JSONObjectExtractionSupport {
+    static func extract(from raw: String) -> (text: String, object: [String: Any])? {
+        let trimmed = raw.trimmingCharacters(in: .whitespacesAndNewlines)
+        guard let start = trimmed.firstIndex(of: "{"),
+              let end = trimmed.lastIndex(of: "}")
+        else {
+            return nil
+        }
+        let jsonText = String(trimmed[start...end])
+        guard let data = jsonText.data(using: .utf8) else { return nil }
+        guard let object = try? JSONSerialization.jsonObject(with: data) as? [String: Any] else { return nil }
+        return (jsonText, object)
+    }
+}