diff --git a/.gitignore b/.gitignore
index ceb9c6836..f770fde4c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -22,7 +22,6 @@ dist-ssr
 *.njsproj
 *.sln
 *.sw?
-public/config.js
 .env
 supabase/.temp/
 coverage/
diff --git a/index.html b/index.html
index 322587c6d..7bf0bd7b5 100644
--- a/index.html
+++ b/index.html
@@ -66,7 +66,6 @@
         ]
       }
     </script>
-    <script src="/config.js"></script>
     <script src="/theme-init.js"></script>
   </head>
 
diff --git a/nginx.conf b/nginx.conf
index 9774afca3..6161bffe1 100644
--- a/nginx.conf
+++ b/nginx.conf
@@ -18,12 +18,7 @@ server {
     if ($uri ~ ^/(app(?:/|$)|login$|share/)) { set $robots_tag "noindex, nofollow"; }
     add_header X-Robots-Tag $robots_tag always;
 
-    # Do not cache runtime bootstraps so config and theme behavior update instantly.
-    location = /config.js {
-        expires -1;
-        add_header Cache-Control "no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0";
-    }
-
+    # Do not cache the theme bootstrap so theme behavior updates instantly.
     location = /theme-init.js {
         expires -1;
         add_header Cache-Control "no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0";
@@ -84,10 +79,6 @@ server {
 
     # Cache JS/CSS bundles (Vite adds hashes to these, so caching is safe)
     location ~* \.(?:css|js)$ {
-        # But exclude config.js which we handled above
-        if ($request_uri ~* "config\.js") {
-            return 404; # Should not happen due to the = /config.js block above
-        }
         expires 1y;
         add_header Cache-Control "public";
     }
diff --git a/public/config.js b/public/config.js
deleted file mode 100644
index 8cc59350b..000000000
--- a/public/config.js
+++ /dev/null
@@ -1,6 +0,0 @@
-// Runtime configuration for DebateLab
-// Note: API keys are stored securely in the Supabase Edge Function
-// This file only contains non-sensitive frontend configuration
-window.env = {
-  // No API keys needed - all AI calls go through the authenticated Edge Function
-};
\ No newline at end of file
diff --git a/public/sw.js b/public/sw.js
index bbc72146f..4dd9d86be 100644
--- a/public/sw.js
+++ b/public/sw.js
@@ -18,7 +18,6 @@ const APP_SHELL = [
   '/app/history',
   '/app/settings',
   '/index.html',
-  '/config.js',
   '/theme-init.js',
   '/manifest.webmanifest',
   '/favicon.ico',
diff --git a/src/test/vercel-deployment-config.test.ts b/src/test/vercel-deployment-config.test.ts
index 6cfe5266f..de3434c4f 100644
--- a/src/test/vercel-deployment-config.test.ts
+++ b/src/test/vercel-deployment-config.test.ts
@@ -127,7 +127,7 @@ describe("Vercel frontend deployment configuration", () => {
     },
   );
 
-  it.each(["/index.html", "/config.js", "/theme-init.js", "/sw.js"])(
+  it.each(["/index.html", "/theme-init.js", "/sw.js"])(
     "prevents stale caching for %s",
     (source) => {
       const config = loadConfig();
diff --git a/vercel.json b/vercel.json
index 343b031a9..d3d7ad814 100644
--- a/vercel.json
+++ b/vercel.json
@@ -84,15 +84,6 @@
         }
       ]
     },
-    {
-      "source": "/config.js",
-      "headers": [
-        {
-          "key": "Cache-Control",
-          "value": "no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0"
-        }
-      ]
-    },
     {
       "source": "/theme-init.js",
       "headers": [