feat: enhance email configuration and validation features

- Implemented mutual exclusivity for SSL and TLS options in the email configuration.
- Added comprehensive validation for required fields, port range, email format, and password requirements.
- Updated the backend to support reversible encryption for SMTP passwords, ensuring secure handling of sensitive data.
- Introduced loading states and improved user feedback in the email configuration UI for better user experience.

packages/backend/convex/email.ts

@@ -229,6 +229,30 @@ export const getActiveEmailConfig = internalQuery({
   },
 });
 
+// Query interna para obter configuração com senha descriptografada
+export const getActiveEmailConfigWithPassword = internalQuery({
+  args: {},
+  handler: async (ctx) => {
+    const { decryptSMTPPassword } = await import("./auth/utils");
+    const config = await ctx.db
+      .query("configuracaoEmail")
+      .withIndex("by_ativo", (q) => q.eq("ativo", true))
+      .first();
+
+    if (!config) {
+      return null;
+    }
+
+    // Descriptografar senha
+    const senhaDescriptografada = await decryptSMTPPassword(config.senhaHash);
+
+    return {
+      ...config,
+      senha: senhaDescriptografada,
+    };
+  },
+});
+
 export const markEmailEnviando = internalMutation({
   args: { emailId: v.id("notificacoesEmail") },
   returns: v.null(),