Initial wws serverless functions setup

- Add health check API endpoint (/api)
- Add chat proxy to n8n workflow (/chat)
- Add webhook receiver for external integrations (/webhook)
- Add Dockerfile for container deployment
- Add wws.toml configuration

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

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

chat/index.js

@@ -0,0 +1,71 @@
+// Chat proxy - routes requests to n8n workflow
+// Path: /chat
+
+addEventListener('fetch', event => {
+  event.respondWith(handleRequest(event.request))
+})
+
+async function handleRequest(request) {
+  const corsHeaders = {
+    'Access-Control-Allow-Origin': '*',
+    'Access-Control-Allow-Methods': 'GET, POST, OPTIONS',
+    'Access-Control-Allow-Headers': 'Content-Type, Authorization',
+  }
+
+  if (request.method === 'OPTIONS') {
+    return new Response(null, { headers: corsHeaders })
+  }
+
+  if (request.method !== 'POST') {
+    return new Response(JSON.stringify({ error: 'Method not allowed' }), {
+      status: 405,
+      headers: { 'Content-Type': 'application/json', ...corsHeaders }
+    })
+  }
+
+  try {
+    const body = await request.json()
+    const { message, project_id, user_id, provider = 'zai' } = body
+
+    if (!message) {
+      return new Response(JSON.stringify({ error: 'Message is required' }), {
+        status: 400,
+        headers: { 'Content-Type': 'application/json', ...corsHeaders }
+      })
+    }
+
+    // Forward to n8n webhook
+    const n8nResponse = await fetch('https://n8n.mylder.io/webhook/chat', {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({
+        message,
+        project_id: project_id || null,
+        user_id: user_id || null,
+        provider,
+        source: 'wws-proxy',
+        timestamp: new Date().toISOString()
+      })
+    })
+
+    const result = await n8nResponse.json()
+
+    return new Response(JSON.stringify({
+      success: true,
+      response: result.response || result,
+      provider,
+      timestamp: new Date().toISOString()
+    }), {
+      headers: { 'Content-Type': 'application/json', ...corsHeaders }
+    })
+
+  } catch (error) {
+    return new Response(JSON.stringify({
+      success: false,
+      error: error.message || 'Internal server error'
+    }), {
+      status: 500,
+      headers: { 'Content-Type': 'application/json', ...corsHeaders }
+    })
+  }
+}