Add 'Rectificar' approval state: docente-only, comment required, email + in-app notification to student

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Activity

• system created · 2026-05-08
  wi cli
• system completed · 2026-05-08
  Rectificar approval state shipped c0c8eca: docente-only dropdown, comentario required + rendered in history, sendRectificarNotice email
• system statusChanged · 2026-05-08
  audit BLOCK on c0c8eca: mailer copy + KPI aggregates
• system completed · 2026-05-08
  Rectificar approval state shipped (c0c8eca + f28e8b9 + db8abd1) — audit-ca PASS