fix(Challenge): Remove @Lob annotations from Challenge entity fields

src/main/java/me/nickhanson/codeforge/entity/Challenge.java

@@ -49,14 +49,12 @@ public class Challenge {
     /**
      * A short description or blurb about the Challenge.
      */
-    @Lob // Maps to a large object column for storing long text
     @Column(name = "blurb", columnDefinition = "TEXT", nullable = true) // Maps to a column that can be null
     private String blurb;
 
     /**
      * The full prompt of the Challenge in Markdown format.
      */
-    @Lob // Maps to a large object column for storing long text
     @Column(name = "prompt_md", columnDefinition = "TEXT", nullable = true) // Maps to a column that can be null
     private String promptMd;
 
@@ -81,7 +79,6 @@ public class Challenge {
     /**
      * The expected answer used by the evaluator for MVP.
      */
-    @Lob
     @Column(name = "expected_answer", columnDefinition = "TEXT")
     private String expectedAnswer;
 
@@ -103,4 +100,4 @@ private String promptPreview() {
         if (promptMd == null) return "null";
         return promptMd.length() > 20 ? promptMd.substring(0, 20) + "..." : promptMd;
     }
-}
+}

src/main/java/me/nickhanson/codeforge/entity/Submission.java

@@ -51,9 +51,9 @@ public class Submission {
 
     /**
      * Optional solution code associated with the submission.
-     * This field is a large object (LOB) to accommodate potentially lengthy code submissions.
+     * This field is stored in a TEXT column to accommodate potentially lengthy code submissions.
      */
-    @Lob
+    @Column(name = "code", columnDefinition = "TEXT")
     private String code; // optional solution text for future use
 
     /**