Use text() for both request and response parsing

- request.json() may not be available in wws
- Parse request body manually with JSON.parse

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

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

chat/index.js

@@ -18,7 +18,18 @@ const handler = async (request) => {
   }
 
   try {
-    const body = await request.json()
+    // Use text() and parse manually - json() may not be available in wws
+    const bodyText = await request.text()
+    let body
+    try {
+      body = JSON.parse(bodyText)
+    } catch (e) {
+      let response = new Response(JSON.stringify({ error: 'Invalid JSON body' }))
+      response.headers.set('Content-Type', 'application/json')
+      response.headers.set('Access-Control-Allow-Origin', '*')
+      return response
+    }
+
     const message = body.message
     const project_id = body.project_id
     const user_id = body.user_id
@@ -45,7 +56,7 @@ const handler = async (request) => {
       })
     })
 
-    // Use text() and parse manually (json() may not be available in wws)
+    // Use text() and parse manually
     const responseText = await n8nResponse.text()
     let result
     try {