v4928.1.5.56 — Opportunity Operation Dedup + Customer New Route

Fixes

Removes the duplicated rendered card where O que fazer agora? and Tarefa ativa repeated the same pending task/action in the opportunity operation sidebar.
Keeps the active task action inside O que fazer agora? with the same button/target, avoiding redundant operator decisions.
Adds an explicit /customers/new page so the Criar cliente action no longer falls into /customers/{customer_id} and shows Identificador de cliente inválido..
Updates fiscal association search link to use /customers?q=..., matching the customers filter parameter.

Added regression tests for the non-duplicated operation panel and explicit customer creation route.
Full test suite: 322 passed.