Add files drag and drop, add chromaDB knowledge base support.

backend/package.json

@@ -1,14 +1,18 @@
 {
   "name": "aiui-backend",
-  "version": "0.1.0",
-  "private": true,
-  "type": "module",
+  "version": "1.0.0",
+  "description": "AIUI Chat Backend",
+  "main": "src/index.js",
   "scripts": {
-    "dev": "node src/index.js",
+    "dev": "node --watch src/index.js",
     "start": "node src/index.js"
   },
   "dependencies": {
+    "chromadb": "^1.8.1",
     "cors": "^2.8.5",
-    "express": "^4.18.2"
+    "express": "^4.21.2",
+    "mammoth": "^1.9.0",
+    "multer": "^1.4.5-lts.2",
+    "pdf-parse": "^1.1.1"
   }
 }