feat: Initial commit of backend services and AGENTS.md

backend/models/Post.js

@@ -0,0 +1,29 @@
+const mongoose = require("mongoose");
+
+const PostSchema = new mongoose.Schema(
+  {
+    user: {
+      type: mongoose.Schema.Types.ObjectId,
+      ref: "User",
+      required: true,
+    },
+    content: {
+      type: String,
+      required: true,
+    },
+    imageUrl: {
+      type: String,
+    },
+    likes: [
+      {
+        type: mongoose.Schema.Types.ObjectId,
+        ref: "User",
+      },
+    ],
+  },
+  {
+    timestamps: true,
+  },
+);
+
+module.exports = mongoose.model("Post", PostSchema);