Feat: Sincronizar contactos y grupos, mejorar nombres en MCP

- Agregar listeners contacts.upsert y contacts.update
- Agregar listeners groups.upsert y groups.update
- Guardar contactos del historial en messaging-history.set
- Modificar MCP para hacer JOIN con contacts y group_metadata
- Ahora los chats muestran nombres reales en lugar de números/IDs

server/utils/mcp.ts

@@ -687,10 +687,17 @@ export async function handleToolCall(toolName: string, args: Record<string, any>
         }
 
         const result = await query(
-          `SELECT id, jid, name, is_group, unread_count, last_message_at, last_message_type
-           FROM chats
-           WHERE instance_id = $1
-           ORDER BY last_message_at DESC NULLS LAST
+          `SELECT
+             c.id, c.jid, c.is_group, c.unread_count, c.last_message_at, c.last_message_type,
+             CASE
+               WHEN c.is_group THEN COALESCE(gm.subject, c.name, c.jid)
+               ELSE COALESCE(ct.name, ct.push_name, c.name, SPLIT_PART(c.jid, '@', 1))
+             END as name
+           FROM chats c
+           LEFT JOIN contacts ct ON c.instance_id = ct.instance_id AND c.jid = ct.jid
+           LEFT JOIN group_metadata gm ON c.instance_id = gm.instance_id AND c.jid = gm.jid
+           WHERE c.instance_id = $1
+           ORDER BY c.last_message_at DESC NULLS LAST
            LIMIT $2`,
           [instanceId, Math.min(limit, 100)]
         )
@@ -717,9 +724,17 @@ export async function handleToolCall(toolName: string, args: Record<string, any>
         }
 
         const result = await query(
-          `SELECT id, jid, name, is_group, unread_count, last_message_at, last_message_type
-           FROM chats
-           WHERE id = $1 AND instance_id = $2`,
+          `SELECT
+             c.id, c.jid, c.is_group, c.unread_count, c.last_message_at, c.last_message_type,
+             CASE
+               WHEN c.is_group THEN COALESCE(gm.subject, c.name, c.jid)
+               ELSE COALESCE(ct.name, ct.push_name, c.name, SPLIT_PART(c.jid, '@', 1))
+             END as name,
+             gm.participants as group_participants
+           FROM chats c
+           LEFT JOIN contacts ct ON c.instance_id = ct.instance_id AND c.jid = ct.jid
+           LEFT JOIN group_metadata gm ON c.instance_id = gm.instance_id AND c.jid = gm.jid
+           WHERE c.id = $1 AND c.instance_id = $2`,
           [chatId, instanceId]
         )
 
@@ -728,17 +743,24 @@ export async function handleToolCall(toolName: string, args: Record<string, any>
         }
 
         const chat = result.rows[0]
+        const response: any = {
+          id: chat.id,
+          jid: chat.jid,
+          name: chat.name,
+          isGroup: chat.is_group,
+          unreadCount: chat.unread_count || 0,
+          lastMessageAt: chat.last_message_at,
+          lastMessageType: chat.last_message_type
+        }
+
+        // Include participants for groups
+        if (chat.is_group && chat.group_participants) {
+          response.participants = chat.group_participants
+        }
+
         return mcpSuccess({
           ok: true,
-          chat: {
-            id: chat.id,
-            jid: chat.jid,
-            name: chat.name,
-            isGroup: chat.is_group,
-            unreadCount: chat.unread_count || 0,
-            lastMessageAt: chat.last_message_at,
-            lastMessageType: chat.last_message_type
-          }
+          chat: response
         })
       }
 
@@ -750,11 +772,18 @@ export async function handleToolCall(toolName: string, args: Record<string, any>
         }
 
         const result = await query(
-          `SELECT id, jid, name, is_group, unread_count, last_message_at
-           FROM chats
-           WHERE instance_id = $1
-             AND (name ILIKE $2 OR jid ILIKE $2)
-           ORDER BY last_message_at DESC NULLS LAST
+          `SELECT
+             c.id, c.jid, c.is_group, c.unread_count, c.last_message_at,
+             CASE
+               WHEN c.is_group THEN COALESCE(gm.subject, c.name, c.jid)
+               ELSE COALESCE(ct.name, ct.push_name, c.name, SPLIT_PART(c.jid, '@', 1))
+             END as name
+           FROM chats c
+           LEFT JOIN contacts ct ON c.instance_id = ct.instance_id AND c.jid = ct.jid
+           LEFT JOIN group_metadata gm ON c.instance_id = gm.instance_id AND c.jid = gm.jid
+           WHERE c.instance_id = $1
+             AND (c.name ILIKE $2 OR c.jid ILIKE $2 OR ct.name ILIKE $2 OR ct.push_name ILIKE $2 OR gm.subject ILIKE $2)
+           ORDER BY c.last_message_at DESC NULLS LAST
            LIMIT $3`,
           [instanceId, `%${searchQuery}%`, Math.min(limit, 50)]
         )