Fix native-image build failures

- Add (:gen-class) to uap-clj.core ns form so AOT compilation produces
  the uap_clj.core class needed by native-image as main entry point
- Remove macos-13 matrix entry (runner no longer available); macOS
  builds now only target arm64 via macos-14

Author: russellwhitaker

.github/workflows/native-image.yml

@@ -22,8 +22,6 @@ jobs:
         include:
           - os: ubuntu-latest
             artifact: uap-clj-linux-amd64
-          - os: macos-13
-            artifact: uap-clj-macos-amd64
           - os: macos-14
             artifact: uap-clj-macos-arm64
 

src/uap_clj/core.clj

@@ -1,5 +1,6 @@
 (ns uap-clj.core
   "Core library with entrypoint main function"
+  (:gen-class)
   (:require
    [clojure.java.io :as io]
    [clojure.string :as s :refer [join trim]]