Fix chat API params to match voice agent

- Change clientId from '001' to 'MA_001'
- Change deployment_id to '21' (Ferdinand)
- Send raw question without context wrapping
- Same params as julia-agent/julia-ai/src/agent.py

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

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

app/(tabs)/chat.tsx

@@ -150,31 +150,21 @@ export default function ChatScreen() {
         throw new Error('Please log in');
       }
 
-      // Get beneficiary context
-      let beneficiary = currentBeneficiary;
-      if (!beneficiary?.id) {
-        const loaded = await loadBeneficiaries();
-        if (loaded.length > 0) {
-          beneficiary = loaded[0];
-          setCurrentBeneficiary(beneficiary);
-        }
-      }
+      // Use same API parameters as voice agent (Julia AI)
+      // IMPORTANT: clientId MUST be 'MA_001' and deployment_id MUST be '21' (Ferdinand)
+      // to match the voice agent configuration in julia-agent/julia-ai/src/agent.py
 
-      const beneficiaryName = beneficiary?.name || 'the patient';
-      const deploymentId = beneficiary?.id?.toString() || '';
-
-      // Call API
+      // Call API with same params as voice agent
       const response = await fetch(API_URL, {
         method: 'POST',
         headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
         body: new URLSearchParams({
           function: 'voice_ask',
-          clientId: '001',
+          clientId: 'MA_001',
           user_name: userName,
           token: token,
-          question: `You are Julia, a caring assistant helping monitor ${beneficiaryName}'s wellbeing. Answer: ${trimmedInput}`,
-          deployment_id: deploymentId,
-          context: '',
+          question: trimmedInput,
+          deployment_id: '21',
         }).toString(),
       });
 
@@ -202,7 +192,7 @@ export default function ChatScreen() {
     } finally {
       setIsSending(false);
     }
-  }, [input, isSending, currentBeneficiary, loadBeneficiaries, setCurrentBeneficiary]);
+  }, [input, isSending]);
 
   // Render message bubble
   const renderMessage = ({ item }: { item: Message }) => {