feat: ordenar proyectos por prioridad real + separa paginas web de dominios

canWriteProject/ListView ya soportaba ordenar por cualquier columna con
clic en el encabezado; solo Prioridad ordenaba alfabetico por el texto
en vez de por severidad real. Se agrega pr.level a la consulta y
sortValue en la columna.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

backend/src/modules/projects/repository.js

@@ -2,7 +2,7 @@ import { pool } from '../../config/db.js';
 
 const LIST_SELECT = `
   SELECT p.id, p.code, p.name, p.description, p.objective, p.project_type_id, pt.name AS project_type_name,
-         p.priority_id, pr.name AS priority_name, pr.color AS priority_color,
+         p.priority_id, pr.name AS priority_name, pr.color AS priority_color, pr.level AS priority_level,
          p.status_id, ps.name AS status_name, ps.color AS status_color, ps.is_closed AS status_is_closed,
          p.owner_user_id, u.name AS owner_name,
          p.requesting_department_id, rd.name AS requesting_department_name,