docs(changelog): record member overview data foundation and redesign under Unreleased

CHANGELOG.md

@@ -5,6 +5,18 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [Unreleased]
+
+### Added
+- **Members overview – view settings** – A new "View" dropdown switches the table between compact and comfortable density and controls how the Member and Address fields are shown: as combined composite cells or split into their underlying columns (Vorname/Nachname/E-Mail resp. Straße/PLZ/Ort). Every choice is remembered per browser.
+- **Members overview – reset columns to default** – The column-visibility menu gained a reset button that restores the curated default column set.
+
+### Changed
+- **Members overview – loads on demand** – The overview no longer reads every member into memory. Filtering, sorting and pagination now run in the database, and rows stream in via infinite scroll as you reach the bottom of the list, so large member lists open quickly. The exact number of matching members is announced (for example "250 Members").
+- **Members overview – condensed name and address** – By default a member shows as a composite name cell and a two-line address cell (street / postal code + city); both columns are sortable and city and postal code stay findable via search. A clear (×) button was added to the search field.
+- **Members overview – bulk actions span the full result set** – Select-all, copy e-mail addresses, and export now act on the complete filtered set rather than only the rows currently loaded, and the count reflects the full filtered total.
+- **Members overview – sticky header, pinned column and sortable headers** – The table keeps a sticky header and pinned identifier column, sort headers that expose the active sort direction, boolean columns rendered as ✓/✗ icons, larger touch targets in both densities, and result-count and loading changes announced through a polite live region — meeting WCAG 2.2 AA for accessibility.
+
 ## [1.3.0] - 2026-06-16
 
 ### Added