Add special mods for the base game and expansions

Just for the metadata

lib/mod_list.dart

@@ -20,6 +20,92 @@ class LoadOrder {
   bool get hasErrors => errors.isNotEmpty;
 }
 
+var specialMods = {
+  'ludeon.rimworld': Mod(
+    id: 'ludeon.rimworld',
+    name: 'RimWorld',
+    path: '',
+    versions: [],
+    description: 'RimWorld base game',
+    dependencies: [],
+    loadAfter: [],
+    loadBefore: [],
+    incompatibilities: [],
+    isBaseGame: true,
+    size: 0,
+    isExpansion: false,
+    enabled: true,
+  ),
+  'ludeon.rimworld.royalty': Mod(
+    id: 'ludeon.rimworld.royalty',
+    name: 'Royalty',
+    path: '',
+    versions: [],
+    description: 'RimWorld expansion - Royalty',
+    dependencies: ['ludeon.rimworld'],
+    loadAfter: [],
+    loadBefore: [
+      'ludeon.rimworld.anomaly',
+      'ludeon.rimworld.biotech',
+      'ludeon.rimworld.ideology',
+    ],
+    incompatibilities: [],
+    isBaseGame: false,
+    size: 0,
+    isExpansion: true,
+    enabled: true,
+  ),
+  'ludeon.rimworld.ideology': Mod(
+    id: 'ludeon.rimworld.ideology',
+    name: 'Ideology',
+    path: '',
+    versions: [],
+    description: 'RimWorld expansion - Ideology',
+    dependencies: ['ludeon.rimworld'],
+    loadAfter: ['ludeon.rimworld.royalty'],
+    loadBefore: ['ludeon.rimworld.anomaly', 'ludeon.rimworld.biotech'],
+    incompatibilities: [],
+    isBaseGame: false,
+    size: 0,
+    isExpansion: true,
+    enabled: true,
+  ),
+  'ludeon.rimworld.biotech': Mod(
+    id: 'ludeon.rimworld.biotech',
+    name: 'Biotech',
+    path: '',
+    versions: [],
+    description: 'RimWorld expansion - Biotech',
+    dependencies: ['ludeon.rimworld'],
+    loadAfter: ['ludeon.rimworld.ideology', 'ludeon.rimworld.royalty'],
+    loadBefore: ['ludeon.rimworld.anomaly'],
+    incompatibilities: [],
+    isBaseGame: false,
+    size: 0,
+    isExpansion: true,
+    enabled: true,
+  ),
+  'ludeon.rimworld.anomaly': Mod(
+    id: 'ludeon.rimworld.anomaly',
+    name: 'Anomaly',
+    path: '',
+    versions: [],
+    description: 'RimWorld expansion - Anomaly',
+    dependencies: ['ludeon.rimworld'],
+    loadAfter: [
+      'ludeon.rimworld.biotech',
+      'ludeon.rimworld.ideology',
+      'ludeon.rimworld.royalty',
+    ],
+    loadBefore: [],
+    incompatibilities: [],
+    isBaseGame: false,
+    size: 0,
+    isExpansion: true,
+    enabled: true,
+  ),
+};
+
 class ModList {
   String configPath = '';
   String modsPath = '';
@@ -56,7 +142,6 @@ class ModList {
     }
 
     final List<FileSystemEntity> entities = directory.listSync();
-    // TODO: Count only the latest version of each mod and not all versions
     final List<String> modDirectories =
         entities.whereType<Directory>().map((dir) => dir.path).toList();
 
@@ -154,42 +239,26 @@ class ModList {
       for (final modElement in modElements) {
         final modId = modElement.innerText.toLowerCase();
 
-        // Check if this is a special Ludeon mod
-        final isBaseGame = modId == 'ludeon.rimworld';
-        final isExpansion =
-            !isBaseGame &&
-            modId.startsWith('ludeon.rimworld.') &&
-            knownExpansionIds.contains(modId);
+        if (specialMods.containsKey(modId)) {
+          mods[modId] = specialMods[modId]!;
+          continue;
+        }
 
         final existingMod = mods[modId];
         final mod = Mod(
-          name:
-              existingMod?.name ??
-              (isBaseGame
-                  ? "RimWorld"
-                  : isExpansion
-                  ? "RimWorld ${_expansionNameFromId(modId)}"
-                  : modId),
+          name: existingMod?.name ?? modId,
           id: existingMod?.id ?? modId,
           path: existingMod?.path ?? '',
           versions: existingMod?.versions ?? [],
-          description:
-              existingMod?.description ??
-              (isBaseGame
-                  ? "RimWorld base game"
-                  : isExpansion
-                  ? "RimWorld expansion"
-                  : ""),
+          description: existingMod?.description ?? '',
           dependencies: existingMod?.dependencies ?? [],
-          loadAfter:
-              existingMod?.loadAfter ??
-              (isExpansion ? ['ludeon.rimworld'] : []),
+          loadAfter: existingMod?.loadAfter ?? [],
           loadBefore: existingMod?.loadBefore ?? [],
           incompatibilities: existingMod?.incompatibilities ?? [],
           enabled: existingMod?.enabled ?? false,
           size: existingMod?.size ?? 0,
-          isBaseGame: isBaseGame,
-          isExpansion: isExpansion,
+          isBaseGame: false,
+          isExpansion: false,
         );
         if (mods.containsKey(modId)) {
           logger.warning('Mod $modId already exists in mods list, overwriting');
@@ -259,7 +328,7 @@ class ModList {
 
       // Convert to string with 2-space indentation
       final prettyXml = xmlDocument.toXmlString(
-        pretty: true, 
+        pretty: true,
         indent: '  ', // 2 spaces
         newLine: '\n',
       );
@@ -653,12 +722,3 @@ class ModList {
     return loadRequired(loadOrder);
   }
 }
-
-String _expansionNameFromId(String id) {
-  final parts = id.split('.');
-  if (parts.length < 3) return id;
-
-  final expansionPart = parts[2];
-  return expansionPart.substring(0, 1).toUpperCase() +
-      expansionPart.substring(1);
-}