docs: add 2.3.0 changelog entry

CHANGELOG.md

@@ -6,6 +6,20 @@ All notable changes per version. Format based on [Keep a Changelog](https://keep
 
 ---
 
+## [2.3.0] — 2026-06-14
+
+### Added
+- **Command Palette (Ctrl+K)** — Overlay that live-filters bookmarks (title and URL) and board names from the keyboard. Arrow-key navigation, Enter opens the match, Escape closes. Read-only navigation, separate from the web search bar. Combobox/listbox ARIA pattern with focus trap and focus return. New DE/EN i18n strings.
+- **Trash** — Deleted bookmarks and boards move to a 30-day trash instead of vanishing. Restore or permanently remove them from a new Settings section; entries older than 30 days are cleaned up automatically. Stored under its own storage key with a hard size cap so it cannot exhaust the storage quota.
+- **Quick Save** — A global keyboard shortcut (default Alt+Shift+S, configurable in the browser shortcut settings) saves the current tab into a fixed Inbox board from any page. Backed by a background worker (service worker on Chrome/Opera, event page on Firefox) that appends to a dedicated pending queue, which the dashboard drains into the Inbox — separate write domains, so a save can never clobber the boards. A badge confirms the save, and open dashboard tabs sync the new bookmark live via a storage-change listener.
+- **Free layout (bonus)** — Boards can be dragged to free positions via a drag handle, persisted per board. Positions are clamped back into view when the window shrinks, and the layout falls back to a stacked column on small screens.
+
+### Changed
+- The bookmark- and board-delete paths no longer remove entries immediately; deletions now route through the trash.
+- Chrome and Firefox manifests gain a background worker, an `action` entry and the `activeTab` / `commands` permissions to support Quick Save. Opera keeps its existing `tabs` permission and redirect worker.
+
+---
+
 ## [2.2.0] — 2026-06-13
 
 ### Added