feat: add hints to session, update API

server/src/models/quest.js

@@ -23,7 +23,7 @@ const stageSchema = new Schema({
     type: [String],
     required: true,
   },
-  hint: {
+  hints: {
     type: [String],
     required: true,
   },
@@ -39,7 +39,7 @@ const Quest = model(
     _id: String,
     title: String,
     order: Number,
-    introduction: String,
+    instruction: String,
     stages: [stageSchema],
   })
 )

server/src/models/session.js

@@ -16,6 +16,7 @@ const Session = model(
       finishedAt: Date,
       progress: String,
       completion: [String],
+      hints: [String],
     },
     { timestamps: true }
   )