test: usar display_code en /t y validar no encontrada tras completar

Co-authored-by: aider (openrouter/openai/gpt-5) <aider@aider.chat>

tests/unit/services/command.claim-unassign.test.ts

@@ -84,7 +84,7 @@ describe('CommandService - /t tomar y /t soltar', () => {
 
     const dc = getDisplayCode(taskId);
     const res = await CommandService.handle(ctx('222', `/t tomar ${dc}`));
-    expect(res[0].message).toContain('ya estaba completada');
+    expect(res[0].message).toContain('no encontrada');
   });
 
   it('soltar: uso inválido (sin id)', async () => {
@@ -118,6 +118,6 @@ describe('CommandService - /t tomar y /t soltar', () => {
 
     const dc = getDisplayCode(taskId);
     const res = await CommandService.handle(ctx('111', `/t soltar ${dc}`));
-    expect(res[0].message).toContain('ya estaba completada');
+    expect(res[0].message).toContain('no encontrada');
   });
 });

tests/unit/services/command.test.ts

@@ -115,26 +115,28 @@ test('completar tarea: camino feliz, ya completada y no encontrada', async () =>
     created_by: '1111111111',
   });
 
+  const dc = Number((memDb.prepare(`SELECT display_code FROM tasks WHERE id = ?`).get(taskId) as any)?.display_code || 0);
+
   // 1) Camino feliz
   let responses = await CommandService.handle({
     sender: '1234567890',
     groupId: 'test-group@g.us',
     mentions: [],
-    message: `/t x ${taskId}`
+    message: `/t x ${dc}`
   });
   expect(responses.length).toBe(1);
   expect(responses[0].recipient).toBe('1234567890');
   expect(responses[0].message).toMatch(/^✅ `\d{4}` _completada_/);
 
-  // 2) Ya completada
+  // 2) Ya completada (ahora no debe resolverse por display_code → no encontrada)
   responses = await CommandService.handle({
     sender: '1234567890',
     groupId: 'test-group@g.us',
     mentions: [],
-    message: `/t x ${taskId}`
+    message: `/t x ${dc}`
   });
   expect(responses.length).toBe(1);
-  expect(responses[0].message).toContain('_Ya estaba completada_');
+  expect(responses[0].message).toContain('no encontrada');
 
   // 3) No encontrada
   responses = await CommandService.handle({