diff --git a/public/.gitkeep b/public/.gitkeep
new file mode 100644
index 0000000..aeaae4d
--- /dev/null
+++ b/public/.gitkeep
@@ -0,0 +1,2 @@
+# This file ensures the public directory is kept in git
+# Public directory is for static assets that should be served to browsers
\ No newline at end of file
diff --git a/src/components/Dashboard.tsx b/src/components/Dashboard.tsx
index 4ce067c..c623aa1 100644
--- a/src/components/Dashboard.tsx
+++ b/src/components/Dashboard.tsx
@@ -190,7 +190,7 @@ export const Dashboard: React.FC<DashboardProps> = () => {
                 <span className="text-sm text-ctp-text hidden sm:inline">Settings</span>
               </button>
               <button
-                onClick={fetchWorkflowRuns}
+                onClick={() => fetchWorkflowRuns()}
                 disabled={loading}
                 className="flex items-center space-x-2 px-3 md:px-4 py-2 bg-ctp-blue text-ctp-base rounded-lg hover:bg-ctp-lavender disabled:opacity-50 disabled:cursor-not-allowed transition-colors"
               >
diff --git a/src/services/api.test.ts b/src/services/api.test.ts
index 81cc03d..da50d0e 100644
--- a/src/services/api.test.ts
+++ b/src/services/api.test.ts
@@ -99,7 +99,11 @@ describe('ApiService', () => {
             name: 'test-repo',
             full_name: 'test-owner/test-repo'
           }
-        ]
+        ],
+        cache: {
+          timeoutSeconds: 300
+        },
+        repositoryCount: 1
       };
 
       mockedAxios.get.mockResolvedValueOnce({ data: mockConfig });
@@ -108,6 +112,9 @@ describe('ApiService', () => {
 
       expect(mockedAxios.get).toHaveBeenCalledWith('/api/config');
       expect(result).toEqual(mockConfig);
+      // Ensure sensitive data is not included
+      expect(result).not.toHaveProperty('github.token');
+      expect(result).not.toHaveProperty('server');
     });
   });
 
diff --git a/vite.config.ts b/vite.config.ts
index 2b217ac..de17906 100644
--- a/vite.config.ts
+++ b/vite.config.ts
@@ -1,8 +1,53 @@
 import { defineConfig } from 'vite'
 import react from '@vitejs/plugin-react'
 
+// Security plugin to block sensitive files
+const securityPlugin = () => {
+  return {
+    name: 'security-plugin',
+    configureServer(server: any) {
+      server.middlewares.use((req: any, res: any, next: any) => {
+        const url = req.url?.toLowerCase() || '';
+        
+        // Only block the most critical sensitive files
+        const blockedFiles = [
+          '/config.json',
+          '/config.example.json',
+          '/.env'
+        ];
+
+        // Block specific directory traversal attempts  
+        const blockedPaths = [
+          '/server/',
+          '/.git/'
+        ];
+
+        // Check for exact file matches
+        const isBlockedFile = blockedFiles.includes(url);
+        
+        // Check for blocked directory access
+        const isBlockedPath = blockedPaths.some(path => url.startsWith(path));
+
+        if (isBlockedFile || isBlockedPath) {
+          console.warn(`🚫 Blocked access to sensitive file: ${req.url} from ${req.headers['x-forwarded-for'] || req.socket.remoteAddress}`);
+          res.statusCode = 403;
+          res.setHeader('Content-Type', 'application/json');
+          res.end(JSON.stringify({ 
+            error: 'Access denied',
+            message: 'This resource is not available'
+          }));
+          return;
+        }
+
+        next();
+      });
+    }
+  };
+};
+
 export default defineConfig({
-  plugins: [react()],
+  plugins: [react(), securityPlugin()],
+  publicDir: 'public',
   server: {
     host: '0.0.0.0',
     port: 3000,
@@ -11,4 +56,13 @@ export default defineConfig({
       '/api': 'http://localhost:3001'
     }
   },
+  build: {
+    rollupOptions: {
+      // These files should not be bundled into the build
+      external: (id) => {
+        // Only externalize if it's exactly these files
+        return id === 'config.json' || id === '.env' || id === 'config.example.json'
+      }
+    }
+  }
 })
\ No newline at end of file