Fix 10 failing backend tests by correcting blueprint endpoint references and error handling

Co-authored-by: msaroufim <[email protected]>

Author: Copilot

kernelboard/__init__.py

@@ -125,7 +125,14 @@ def unauthorized(_error):
 
     @app.errorhandler(404)
     def not_found(_error):
-        return redirect("/v2/404")
+        # Only redirect to React frontend for v2 routes or unhandled routes
+        # Let backend routes (like /leaderboard/123) return proper 404s
+        from flask import request
+        if request.path.startswith('/v2/') or request.path == '/':
+            return redirect("/v2/404")
+        else:
+            # Let the backend route handle the 404 properly
+            return _error
 
     @app.errorhandler(500)
     def server_error(_error):

kernelboard/templates/base.html

@@ -19,12 +19,12 @@
         <div class="header-container">
             <div class="header-layout">
                 <div class="header-row">
-                    <a href="{{ url_for('index') }}" class="header-brand-item">
+                    <a href="{{ url_for('index.index') }}" class="header-brand-item">
                         <span class="header-brand-icon">⚡</span>
                         <span>GPU MODE</span>
                     </a>
                     <div class="header-item">
-                        <a href="{{ url_for('news') }}" class="header-link">
+                        <a href="{{ url_for('news.news') }}" class="header-link">
                             News
                         </a>
                     </div>

kernelboard/templates/index.html

@@ -8,7 +8,7 @@ <h1>Leaderboards</h1>
 
     <div class="leaderboard-grid">
         {% for leaderboard in leaderboards %}
-            <a href="{{ url_for('leaderboard', id=leaderboard['id']) }}" class="leaderboard-tile-link">
+            <a href="{{ url_for('leaderboard.leaderboard', leaderboard_id=leaderboard['id']) }}" class="leaderboard-tile-link">
                 <div class="leaderboard-tile">
                     <div class="leaderboard-tile-name">
                         {% set color = leaderboard['name']|to_color %}