feat(v2): REAL Slack send confirmed working end-to-end

After the user added the missing OAuth scopes (channels:join,
chat:write.public) and reinstalled the Slack App, updated the credential
with the refreshed token and retried the real test send: SUCCESS. The
digest message was actually posted to #chamados-suporte (channel
C0BJNBTPFT5) by "Bot Coordenador", confirmed via the real Slack API
response (ok:true, real message ts/channel/bot_profile returned).
Code - Registrar Envio Sucesso correctly recorded status:'success' --
this record is intentionally left in place (not cleared like the earlier
failed-test rows), since it now correctly represents a real send and its
whole purpose is to prevent a duplicate resend of today's digest.

Also found and fixed a real cosmetic bug from that same successful send:
n8n's Slack node appends an "Automated with this n8n workflow" link
footer by default (otherOptions.includeLinkToWorkflow defaults to true)
-- not part of the message spec (minimal digest only). Disabled it.
Added a regression test.

Reverted SEND_ENABLED to false and deactivated pending final user
confirmation before permanent production activation.

159/159 tests passing.

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

n8n/deployed/coordenador-glpi-v2.n8n.json

@@ -788,7 +788,9 @@
           "value": "C0BJNBTPFT5"
         },
         "text": "={{ $json.mensagem }}",
-        "otherOptions": {}
+        "otherOptions": {
+          "includeLinkToWorkflow": false
+        }
       },
       "credentials": {
         "slackApi": {

n8n/workflow.template.json

@@ -788,7 +788,9 @@
           "value": "C0BJNBTPFT5"
         },
         "text": "={{ $json.mensagem }}",
-        "otherOptions": {}
+        "otherOptions": {
+          "includeLinkToWorkflow": false
+        }
       },
       "credentials": {
         "slackApi": {

tools/build-workflow.test.js

@@ -148,6 +148,15 @@ test('node real de envio Slack existe (nao e so simulado/comentado)', () => {
   assert.equal(slackNode.onError, 'continueErrorOutput', 'precisa separar sucesso/falha pra idempotencia e nao-silenciar-erro');
 });
 
+test('Slack node nao anexa o rodape automatico "Automated with this n8n workflow" (bug real: vazou na primeira mensagem real de teste)', () => {
+  // O node Slack do n8n inclui esse link por padrao (includeLinkToWorkflow default: true) --
+  // vazou pra dentro do canal real no primeiro teste de envio. A missao pede mensagem minima,
+  // sem nada alem do que buildTopMessage gera.
+  const wf = buildWorkflow();
+  const slackNode = wf.nodes.find((n) => n.type === 'n8n-nodes-base.slack');
+  assert.equal(slackNode.parameters.otherOptions.includeLinkToWorkflow, false);
+});
+
 test('guard de envio roda antes do Slack e existe IF de decisao', () => {
   const wf = buildWorkflow();
   const guardConn = wf.connections['Code - Guard de Envio Slack'];