refactor: replace BlockType with BlockLabel for consistency across models

mobile-app/lib/models/learn/curriculum_model.dart

@@ -118,14 +118,27 @@ class SuperBlock {
   }
 }
 
-enum BlockType {
-  lecture,
-  workshop,
-  lab,
-  review,
-  quiz,
-  exam,
-  legacy,
+enum BlockLabel {
+  lecture('lecture'),
+  workshop('workshop'),
+  lab('lab'),
+  review('review'),
+  quiz('quiz'),
+  exam('exam'),
+  warmup('warm-up'),
+  learn('learn'),
+  practice('practice'),
+  legacy('legacy');
+
+  final String value;
+  const BlockLabel(this.value);
+
+  static BlockLabel fromValue(String value) {
+    return BlockLabel.values.firstWhere(
+      (blockLabel) => blockLabel.value == value,
+      orElse: () => BlockLabel.legacy,
+    );
+  }
 }
 
 enum BlockLayout {
@@ -141,7 +154,7 @@ class Block {
   final String dashedName;
   final SuperBlock superBlock;
   final BlockLayout layout;
-  final BlockType type;
+  final BlockLabel label;
   final List description;
   // Blocks in chapter-based super blocks don't have `order`.
   final int? order;
@@ -152,7 +165,7 @@ class Block {
   Block({
     required this.superBlock,
     required this.layout,
-    required this.type,
+    required this.label,
     required this.name,
     required this.dashedName,
     required this.description,
@@ -192,11 +205,8 @@ class Block {
       }
     }
 
-    BlockType blockTypeFromString(String type) {
-      return BlockType.values.firstWhere(
-        (e) => e.name.toLowerCase() == type.toLowerCase(),
-        orElse: () => BlockType.legacy, // or return null if preferred
-      );
+    BlockLabel blockLabelFromString(String type) {
+      return BlockLabel.fromValue(type);
     }
 
     return Block(
@@ -205,9 +215,10 @@ class Block {
         name: superBlockName,
       ),
       layout: handleLayout(data['blockLayout']),
-      type: data['blockType'] != null
-          ? blockTypeFromString(data['blockType'])
-          : BlockType.legacy,
+      // Support both blockLabel and blockType for backward compatibility
+      label: (data['blockLabel'] ?? data['blockType']) != null
+          ? blockLabelFromString(data['blockLabel'] ?? data['blockType'])
+          : BlockLabel.legacy,
       name: data['name'],
       dashedName: dashedName,
       description: description,

mobile-app/lib/models/learn/daily_challenge_model.dart

@@ -115,7 +115,7 @@ class DailyChallengeBlock {
         name: 'Daily Challenges',
       ),
       layout: BlockLayout.challengeGrid,
-      type: BlockType.legacy,
+      label: BlockLabel.legacy,
       description: [description],
       challenges: challenges
           .map((overview) => ChallengeOrder(

mobile-app/lib/ui/views/learn/block/block_template_view.dart

@@ -29,7 +29,7 @@ class BlockTemplateView extends StatelessWidget {
         model,
         child,
       ) {
-        final (icon, color) = model.getIconData(block.type);
+        final (icon, color) = model.getIconData(block.label);
 
         return Padding(
           padding: const EdgeInsets.only(bottom: 16.0),

mobile-app/lib/ui/views/learn/block/block_template_viewmodel.dart

@@ -147,21 +147,27 @@ class BlockTemplateViewModel extends BaseViewModel {
     }
   }
 
-  (IconData?, Color) getIconData(BlockType type) {
+  (IconData?, Color) getIconData(BlockLabel type) {
     switch (type) {
-      case BlockType.lecture:
+      case BlockLabel.lecture:
         return (Icons.menu_book_outlined, FccColors.blue30);
-      case BlockType.quiz:
+      case BlockLabel.quiz:
         return (Icons.help_outline, FccColors.orange30);
-      case BlockType.lab:
+      case BlockLabel.lab:
         return (Icons.science_outlined, FccColors.green40);
-      case BlockType.workshop:
+      case BlockLabel.workshop:
         return (Icons.build_outlined, FccColors.purple10);
-      case BlockType.exam:
+      case BlockLabel.exam:
         return (Icons.school, FccColors.red15);
-      case BlockType.review:
+      case BlockLabel.review:
         return (Icons.edit_document, FccColors.yellow10);
-      default: // BlockType.legacy or unknown
+      case BlockLabel.warmup:
+        return (Icons.fitbit_outlined, FccColors.blue30);
+      case BlockLabel.learn:
+        return (Icons.school_outlined, FccColors.green40);
+      case BlockLabel.practice:
+        return (Icons.edit_outlined, FccColors.purple10);
+      default: // BlockLabel.legacy or unknown
         return (null, FccColors.blue05);
     }
   }

mobile-app/test/unit/challenge_utils_test.dart

@@ -29,7 +29,7 @@ void main() {
     return Block(
       superBlock: SuperBlock(dashedName: 'superblock', name: 'Super Block'),
       layout: BlockLayout.challengeList,
-      type: BlockType.lecture,
+      label: BlockLabel.lecture,
       name: 'Block 1',
       dashedName: 'block-1',
       description: [],