feat: agent brain (ollama) and chat ui

src/App.tsx

@@ -1,7 +1,7 @@
 import { useState } from "react";
 import { invoke } from "@tauri-apps/api/core";
 import { open } from "@tauri-apps/plugin-dialog";
-import { ToolTester } from "./components/ToolTester";
+import { Chat } from "./components/Chat";
 import "./App.css";
 
 function App() {
@@ -62,8 +62,7 @@ function App() {
             <strong>Active Project:</strong> {projectPath}
           </div>
           <hr style={{ margin: "20px 0" }} />
-          <p>Project loaded successfully.</p>
-          <ToolTester />
+          <Chat />
         </div>
       )}