fix: reduce ollama timeout, set route default to ollama

app/api/ai/chat/route.ts

@@ -5,7 +5,7 @@ import { consumeToken } from '@/lib/tokens'
 export async function POST(req: NextRequest) {
   try {
     const body = await req.json()
-    const { messages, projectCode, provider = 'openrouter' } = body
+    const { messages, projectCode, provider = 'ollama' } = body
 
     // Beta: token always succeeds (unlimited)
     const tokenResult = await consumeToken('AI chat message')

lib/ai-service.ts

@@ -97,7 +97,7 @@ class AIService {
         }
       },
       {
-        timeout: 60000,
+        timeout: 10000,
         headers: {
           'Authorization': `Bearer ${process.env.OLLAMA_API_KEY || ''}`,
           'Content-Type': 'application/json',