feat: update navbar title and footer year

- Update navbar brand from "投資組合大擂台" to "智能投組大擂台"
- Update offcanvas title from "投資組合大擂台" to "智能投組大擂台"
- Update footer copyright year from 2023 to 2025

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

templates/base.html

@@ -71,7 +71,7 @@
         <nav class="navbar bg-light">
             <div class="container-fluid p-2">
                 <a class="navbar-brand mx-2" href="{{ url_for('index') }}">
-                    <h3><strong></i>投資組合大擂台</strong></h3>
+                    <h3><strong></i>智能投組大擂台</strong></h3>
                 </a>
                 <!-- TODO: Login/Logout -->
                 <div class="navbar-expand ms-auto">
@@ -131,7 +131,7 @@
                 >
                     <div class="offcanvas-header">
                         <h4 class="offcanvas-title mt-2 p-0" id="offcanvasNavbarLabel">
-                            投資組合大擂台
+                            智能投組大擂台
                         </h4>
                         <button
                             type="button"
@@ -383,7 +383,7 @@
                 class="text-center p-3"
                 style="background-color: rgba(0, 0, 0, 0.2)"
                 >
-                © 2023 Copyright NTHU-TPM 
+                © 2025 Copyright NTHU-TPM 
                 <a href="https://github.com/SeanChenTaipei" target="_blank" rel="noopener" class="btn-outline-light btn-floating" role="button">
                     <i class="fab fa-github"></i>
                 </a>