backend: separate App and server, add websocket endpoint, accept data directory command argument. initialize sqlalchemy database and models in new module. frontend: create backend class for managing ws connection, move ui to chat_screen, create scaffold chat and agent classes.

testing/login.js

@@ -0,0 +1,13 @@
+const WebSocket = require('ws');
+
+const ws = new WebSocket('ws://localhost:5000/ws');
+
+ws.on('open', function open() {
+    const packet = JSON.stringify({ username: "test-user", password: "123456" });
+    ws.send(packet);
+});
+
+ws.on('message', function incoming(data) {
+    const jsonResponse = JSON.parse(data);
+    console.log(jsonResponse);
+});