Fix reprinted class source resolution in subclass links

src/main/java/dev/ebullient/convert/tools/dnd5e/Tools5eIndex.java

@@ -1055,6 +1055,25 @@ public Set<String> findSubclasses(String classKey) {
         return subclassMap.getOrDefault(classKey, Set.of());
     }
 
+    /**
+     * Resolve the effective class source through reprints.
+     * If the class identified by className+classSource was reprinted
+     * (e.g., PHB Druid → XPHB Druid), return the reprint target's source.
+     */
+    public String resolveClassSource(String className, String classSource) {
+        String classKey = String.join("|",
+                Tools5eIndexType.classtype.name(),
+                className, classSource).toLowerCase();
+        String reprint = reprints.get(classKey);
+        if (reprint != null) {
+            Tools5eSources reprintSources = Tools5eSources.findSources(reprint);
+            if (reprintSources != null && reprintSources.includedByConfig()) {
+                return reprintSources.primarySource();
+            }
+        }
+        return classSource;
+    }
+
     public Set<String> findClassFeatures(String classOrSubclassKey) {
         return classFeatures.getOrDefault(classOrSubclassKey, Set.of());
     }

src/main/java/dev/ebullient/convert/tools/dnd5e/Tools5eLinkifier.java

@@ -390,6 +390,8 @@ public String getSubclassResource(String subclassKey) {
     }
 
     public String getSubclassResource(String subclass, String parentClass, String classSource, String subclassSource) {
+        // Resolve classSource through reprints (e.g., PHB → XPHB when PHB class is reprinted)
+        classSource = index.resolveClassSource(parentClass, classSource);
         String parentFile = Tui.slugify(parentClass);
         String defaultSource = Tools5eIndexType.classtype.defaultOutputSource();
         if (!classSource.equalsIgnoreCase(defaultSource) &&

src/test/resources/5e/sources-homebrew.json

@@ -49,7 +49,8 @@
       "MM",
       "EGW",
       "FTD",
-      "PHB"
+      "PHB",
+      "XPHB"
     ]
   },
   "include": [