refactor: remove audio format enum

#1944

Author: jo-elimu

pom-dependency-tree.txt

@@ -1,5 +1,5 @@
-ai.elimu:webapp:war:2.5.37-SNAPSHOT
-+- com.github.elimu-ai:model:jar:model-2.0.83:compile
+ai.elimu:webapp:war:2.5.38-SNAPSHOT
++- com.github.elimu-ai:model:jar:model-2.0.84:compile
 |  \- com.google.code.gson:gson:jar:2.11.0:compile
 |     \- com.google.errorprone:error_prone_annotations:jar:2.27.0:compile
 +- org.springframework:spring-context:jar:6.0.8:compile

pom.xml

@@ -9,7 +9,7 @@
   <properties>
     <java.version>17</java.version>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-    <model.version>2.0.83</model.version>
+    <model.version>2.0.84</model.version>
     <hibernate.version>6.1.7.Final</hibernate.version>
     <jetty.version>11.0.24</jetty.version>
     <spring.version>6.0.8</spring.version>

src/main/java/ai/elimu/model/content/multimedia/Audio.java

@@ -2,11 +2,8 @@
 
 import ai.elimu.model.content.StoryBookParagraph;
 import ai.elimu.model.content.Word;
-import ai.elimu.model.v2.enums.content.AudioFormat;
 import jakarta.persistence.Column;
 import jakarta.persistence.Entity;
-import jakarta.persistence.EnumType;
-import jakarta.persistence.Enumerated;
 import jakarta.persistence.Lob;
 import jakarta.persistence.ManyToOne;
 import jakarta.validation.constraints.NotNull;
@@ -54,6 +51,5 @@ public class Audio extends Multimedia {
   private Long durationMs;
 
   @NotNull
-  @Enumerated(EnumType.STRING)
-  private AudioFormat audioFormat;
+  private String audioFormat;
 }