Fold duplicated campanha access, loaders, list/filter/form shells, and scripts into shared modules; reorganize utilities by domain; stabilize e2e; and document prevention-first audit workflow so the same smells cannot creep back in.
The picker shipped as a capability of CampaignTable rather than a municípios
feature, so every list that already uses the shared table got it: pass
`columnVisibility` and the table mounts the menu and filters the columns.
Persistence is a cookie, not localStorage, and the reason is a type rather
than a preference: CampaignTableColumn.cell is a function, so the column array
never crosses the server/client boundary and the client cannot rebuild the
table without it. The server filters, so a hidden column does not reach the RSC
payload either. `campaign_columns` carries a listId -> hidden ids map in a
compact form with no JSON and no percent-encoding, because document.cookie and
Next's cookies() disagree about decoding.
Closing the menu is the commit. The first cut debounced at 400 ms, which
batches a burst rather than a reading pace, so unchecking four columns while
reading their labels was four full-route refreshes — on /campanha/liderancas
each one re-pays the ~229 ms / 371-statement render already ledgered P1. The
timer survives at 3 s as a safety net for a menu left open; the price is that
the table behind the menu no longer updates per checkbox.
`defaultVisible` is gone: it was true on 10 columns and false on none, and
storing only the hidden set is what makes a newly shipped column visible to
everyone who never touched the picker. In exchange `label` is required, which
made `head` optional — 24 columns had a head that only restated the new label.
Each surface declares one mandatory column, re-filtered on the server so a
stale cookie cannot leave a row without its only linked cell.
The bug review caught is this codebase's recurring one: the RSC payload of
toggle A arrives inside the window of toggle B, and adopting the server there
undid B and then committed the set without it. Reconciliation now runs only
when no write is pending, pinned red against the previous code.
Municipality column ids are typed against MunicipalityListColumnId now, so the
id, the B22 description and the picker label are one key; the union member
`nivel` was renamed `level` to match the id and the ?level= filter. The
picker's own content comparison is sameIdSet, widened to string ids.
