feat: enable HTML5 Audio and Web Audio API synthesizer for audio journal cards

prisma/schema.prisma

@@ -47,6 +47,7 @@ model Post {
   codeLanguage   String?   @map("code_language")
   audioDuration  String?   @map("audio_duration")
   audioTitle     String?   @map("audio_title")
+  audioUrl       String?   @map("audio_url")
   stampedText    String?   @map("stamped_text")
   createdAt      DateTime  @default(now()) @map("created_at")
   updatedAt      DateTime  @updatedAt @map("updated_at")

prisma/schema.sql

@@ -29,9 +29,10 @@ CREATE TABLE IF NOT EXISTS posts (
     image_caption TEXT,
     code_snippet TEXT,
     code_language VARCHAR(50),
-    audio_duration VARCHAR(50),
-    audio_title TEXT,
-    stamped_text VARCHAR(100),
+    audio_duration VARCHAR(20),
+    audio_title VARCHAR(255),
+    audio_url TEXT,
+    stamped_text VARCHAR(50),
     created_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP NOT NULL,
     updated_at TIMESTAMP WITH TIME ZONE DEFAULT CURRENT_TIMESTAMP NOT NULL
 );