feat: Enhance conversation history retrieval and logging for negotiation responses

supabase/functions/negotiate/index.ts

@@ -544,20 +544,26 @@ async function processNegotiation(
     counterOfferContext,
   );
 
-  // Create conversation message for the AI-generated response
-  const messageType = counterOfferContext
-    ? "counter_offer"
-    : "negotiation_sent";
-  await client.from("conversation_messages").insert({
-    debt_id: record.id,
-    message_type: messageType,
-    direction: "outbound",
-    subject: emailResult.subject,
-    body: emailResult.body,
-    from_email: record.metadata?.toEmail || "user@example.com",
-    to_email: record.metadata?.fromEmail || record.vendor,
-    message_id: `ai-generated-${Date.now()}`,
-  });
+  // Create conversation message only for auto-responses (counter-offers)
+  // Regular negotiation generation doesn't create messages since they're not sent yet
+  if (counterOfferContext) {
+    await client.from("conversation_messages").insert({
+      debt_id: record.id,
+      message_type: "counter_offer",
+      direction: "outbound",
+      subject: emailResult.subject,
+      body: emailResult.body,
+      from_email: record.metadata?.toEmail || "user@example.com",
+      to_email: record.metadata?.fromEmail || record.vendor,
+      message_id: `auto-counter-${Date.now()}`,
+      ai_analysis: {
+        strategy: emailResult.strategy,
+        confidence: emailResult.confidenceLevel,
+        projectedSavings: emailResult.projectedSavings,
+        isAutoGenerated: true,
+      },
+    });
+  }
 
   // Update debt record with AI-generated content - using provided client
   const { error: updateError } = await client