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blight-editor/src/main/java/de/blight/editor/ui/AreaEditorView.java

@@ -14,7 +14,8 @@ import javafx.scene.layout.*;
 import javafx.util.Duration;
 
 import java.io.IOException;
-import java.nio.file.Path;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.*;
 
 public class AreaEditorView extends BorderPane {
 
@@ -57,6 +58,7 @@ public class AreaEditorView extends BorderPane {
         current = saved;
         reloading = false;
         persist();
+        writeDefaultLocalisationIfAbsent(saved.id());
     }
 
     // ── Form panel ────────────────────────────────────────────────────────────
@@ -229,6 +231,53 @@ public class AreaEditorView extends BorderPane {
         catch (IOException e) { areas.clear(); }
     }
 
+    // ── Localisation defaults ──────────────────────────────────────────────────
+
+    private void writeDefaultLocalisationIfAbsent(String fullId) {
+        if (fullId == null || fullId.isBlank()) return;
+        String shortId = fullId.startsWith(PREFIX) ? fullId.substring(PREFIX.length()) : fullId;
+        if (shortId.isBlank()) return;
+        String key = fullId + ".name";
+        String defaultName = Character.toUpperCase(shortId.charAt(0)) + shortId.substring(1);
+
+        Path langSrc = ProjectRoot.resolve("blight-lang", "src", "main", "resources", "lang");
+        Path[] langMirrors = {
+            ProjectRoot.resolve("blight-lang", "bin", "main", "lang"),
+            ProjectRoot.resolve("blight-lang", "build", "resources", "main", "lang"),
+        };
+        for (String locale : new String[]{"de", "en"}) {
+            Path src = langSrc.resolve("messages_" + locale + ".properties");
+            try {
+                if (appendKeyIfAbsent(src, key, defaultName)) {
+                    for (Path mirrorDir : langMirrors) {
+                        Path mirror = mirrorDir.resolve("messages_" + locale + ".properties");
+                        if (Files.exists(mirror)) {
+                            Files.copy(src, mirror, StandardCopyOption.REPLACE_EXISTING);
+                        }
+                    }
+                }
+            } catch (IOException e) {
+                // non-critical
+            }
+        }
+    }
+
+    /** Returns true if the key was absent and has been appended. */
+    private static boolean appendKeyIfAbsent(Path file, String key, String value) throws IOException {
+        if (!Files.exists(file)) return false;
+        String needle = key + "=";
+        String needleSpace = key + " =";
+        for (String line : Files.readAllLines(file, StandardCharsets.UTF_8)) {
+            String s = line.stripLeading();
+            if (s.startsWith(needle) || s.startsWith(needleSpace)) return false;
+        }
+        String existing = Files.readString(file, StandardCharsets.UTF_8);
+        String sep = existing.endsWith("\n") ? "" : "\n";
+        Files.writeString(file, existing + sep + key + "=" + value + "\n",
+                StandardCharsets.UTF_8, StandardOpenOption.WRITE, StandardOpenOption.TRUNCATE_EXISTING);
+        return true;
+    }
+
     // ── Helpers ───────────────────────────────────────────────────────────────
 
     private static Label sectionTitle(String text) {