Add reachability metadata for macOS in native image

This commit introduces a `reachability-metadata.json` file specifically for macOS. The metadata defines reflection-required classes, methods, and fields, ensuring compatibility and proper execution in native builds.

Author: kdroidFilter

search/src/jvmMain/kotlin/io/github/kdroidfilter/seforimlibrary/search/LuceneSearchEngine.kt

@@ -19,6 +19,7 @@ import org.apache.lucene.search.ScoreDoc
 import org.apache.lucene.search.TermQuery
 import org.apache.lucene.util.QueryBuilder
 import org.apache.lucene.store.FSDirectory
+import org.apache.lucene.store.NIOFSDirectory
 import org.apache.lucene.document.IntPoint
 import org.jsoup.Jsoup
 import org.jsoup.safety.Safelist
@@ -99,8 +100,16 @@ class LuceneSearchEngine(
         }
     }
 
-    // Open Lucene directory lazily to avoid any I/O at app startup
-    private val dir by lazy { FSDirectory.open(indexDir) }
+    // Open Lucene directory lazily to avoid any I/O at app startup.
+    // Falls back to NIOFSDirectory if MMapDirectory/FSDirectory fails (e.g. GraalVM native image
+    // on macOS where Panama foreign downcalls for madvise are not registered).
+    private val dir by lazy {
+        try {
+            FSDirectory.open(indexDir)
+        } catch (t: Throwable) {
+            NIOFSDirectory(indexDir)
+        }
+    }
 
     private val stdAnalyzer: Analyzer by lazy { analyzer }
     private val magicDict: MagicDictionaryIndex? by lazy {