Extract the cookie parser, export-payload builder and fee-status helper
into their own modules and remove the filter/sort/load helpers the
database pushdown made dead, so the overview LiveView stays a thin
coordinator over focused units.
The View dropdown drives row density and whether the Member and Address
fields render as composite cells or split into their underlying columns;
the column manager toggles visibility and resets to the curated default.
All choices persist per browser through the URL/session/cookie/global
chain, so a saved layout survives reloads without a per-account store.
Push the boolean and date custom-field predicates and custom-field
sorting down to JSONB expressions so the overview stops classifying
custom-field values in memory. A GIN index on custom_field_values.value
keeps the boolean membership predicates index-served.
Store the cycle's end date alongside its start so the payment-status
filter can be a plain date comparison in SQL instead of loading every
cycle and classifying it in memory. The value is fixed when the cycle
is created (the fee type's interval is immutable and the update action
never changes the start date), so the denormalized column can never
drift from the computed end and needs no write-time reconciliation.
