fix: remove duplicate middleware, add some docs content

docs/app/docs/layout.tsx

@@ -3,6 +3,7 @@ import Link from 'next/link'
 import { DocsLayout } from 'fumadocs-ui/layouts/docs'
 import { GithubIcon } from 'lucide-react'
 import { source } from '@/lib/source'
+import { AgentIcon } from '@/components/icons'
 
 const GitHubLink = () => (
   <div className="fixed bottom-4 left-4 z-50">
@@ -23,7 +24,12 @@ export default function Layout({ children }: { children: ReactNode }) {
       <DocsLayout
         tree={source.pageTree}
         nav={{
-          title: 'Sim Studio',
+          title: (
+            <div className="flex items-center gap-2">
+              <AgentIcon className="h-4 w-4" />
+              Sim Studio
+            </div>
+          ),
         }}
       >
         {children}

docs/content/docs/execution/index.mdx

@@ -1,6 +1,6 @@
 ---
 title: Execution
-description: The execution of a workflow.
+description: Sim Studio provides a powerful execution engine that brings your workflows to life. Understanding how execution works will help you design more effective workflows and troubleshoot any issues that arise..
 ---
 
 import { Card, Cards } from 'fumadocs-ui/components/card'
@@ -10,10 +10,6 @@ import { Accordion, Accordions } from 'fumadocs-ui/components/accordion'
 import { Tab, Tabs } from 'fumadocs-ui/components/tabs'
 import { AgentIcon, ApiIcon, ConditionalIcon, CodeIcon, ChartBarIcon, ConnectIcon, GmailIcon, PerplexityIcon, NotionIcon, ExaAIIcon, FirecrawlIcon, SlackIcon } from '@/components/icons'
 
-# Workflow Execution
-
-Sim Studio provides a powerful execution engine that brings your workflows to life. Understanding how execution works will help you design more effective workflows and troubleshoot any issues that arise.
-
 ## Execution Flow
 
 When you execute a workflow in Sim Studio, the system follows a predictable pattern:

sim/app/middleware.ts

@@ -1,37 +0,0 @@
-import { NextRequest, NextResponse } from 'next/server'
-
-export async function middleware(request: NextRequest) {
-  // Check if the path is exactly /w
-  if (request.nextUrl.pathname === '/w') {
-    return NextResponse.redirect(new URL('/w/1', request.url))
-  }
-
-  // Skip auth check if DISABLE_AUTH is set (for standalone mode)
-  if (process.env.DISABLE_AUTH === 'true' || process.env.NEXT_PUBLIC_DISABLE_AUTH === 'true') {
-    return NextResponse.next()
-  }
-
-  const cookieHeader = request.headers.get("cookie");
-  const cookies = cookieHeader?.split("; ").reduce((acc, cookie) => {
-    const [key, value] = cookie.split("=");
-    acc.set(key, value);
-    return acc;
-  }, new Map());
-
-  const sessionCookie =
-    cookies?.get("better-auth.session_token") ||
-    cookies?.get("__Secure-better-auth.session_token");
-    
-  if (!sessionCookie) {
-    return NextResponse.redirect(new URL('/login', request.url))
-  }
-  return NextResponse.next()
-}
-
-// TODO: Add protected routes
-export const config = {
-  matcher: [
-    '/w', // Match exactly /w
-    '/w/:path*', // Keep existing matcher for protected routes
-  ],
-}

sim/middleware.ts

@@ -1,4 +1,5 @@
 import { NextRequest, NextResponse } from 'next/server'
+import { getSessionCookie } from "better-auth/cookies"
 
 export async function middleware(request: NextRequest) {
    // Check if the path is exactly /w
@@ -11,18 +12,7 @@ export async function middleware(request: NextRequest) {
     return NextResponse.next()
   }
 
-  const cookieHeader = request.headers.get("cookie");
-  const cookies = cookieHeader?.split("; ").reduce((acc, cookie) => {
-    const [key, value] = cookie.split("=");
-    acc.set(key, value);
-    return acc;
-  }, new Map());
-
-  const sessionCookie =
-    cookies?.get("better-auth.session_token") ||
-    cookies?.get("__Secure-better-auth.session_token");
-
-  // Existing auth check for protected routes
+  const sessionCookie = getSessionCookie(request)
   if (!sessionCookie) {
     return NextResponse.redirect(new URL('/login', request.url))
   }