Implement chat backend and frontend scaffolding

Expanded chat backend with message reply, edit, delete, and reaction support in consumers and models. Updated routing to use chat_id. Added chat-related view stubs. On the frontend, introduced ChatLayout and ChatPage scaffolding, and routed protected routes through ChatLayout.

frontend/src/App.tsx

@@ -1,10 +1,14 @@
 import { BrowserRouter as Router, Routes, Route } from "react-router-dom";
-import Home from "./pages/home/home";
 import HomeLayout from "./layouts/HomeLayout";
+import ChatLayout from "./layouts/ChatLayout";
+
 import Downloader from "./pages/downloader/Downloader";
-import PrivateRoute from "./routes/PrivateRoute";
+import Home from "./pages/home/home";
 import DroneServisSection from "./pages/home/components/Services/droneServis";
 
+
+import PrivateRoute from "./routes/PrivateRoute";
+
 //import { UserContextProvider } from "./context/UserContext";
 
 // Pages
@@ -36,9 +40,10 @@ export default function App() {
 
           {/* Example protected route group (kept for future use) */}
           <Route element={<PrivateRoute />}>
-            <Route path="/" element={<HomeLayout />}>
-              <Route path="protected-downloader" element={<Downloader />} />
+            <Route path="/" element={<ChatLayout />}>
+              
             </Route>
+
           </Route>
         </Routes>
       {/* </UserContextProvider> */}

frontend/src/layouts/ChatLayout.tsx

@@ -0,0 +1,21 @@
+import Footer from "../components/Footer/footer";
+import { Outlet } from "react-router";
+import SiteNav, { type User } from "../components/navbar/SiteNav";
+
+
+const userexists: User = {
+  username: "Bruno",
+  email: "",
+  avatarUrl: "",
+};
+
+import styles from "./HomeLayout.module.css";
+
+export default function ChatLayout(){
+    return(
+        <div className={styles.root}>
+            <SiteNav user={userexists} onLogin={() => {}} onLogout={() => {}} />
+            <Outlet />
+        </div>
+    )
+}