docs: update CHANGELOG.md for v0.4.2

chore: bump version to 0.4.2

Merge pull request #47 from affromero/fix/edit-preserves-manual-data

fix: address Codex review findings on edit preservation

fix: preserve manual entry data when clicking Edit on confirmation card

docs: add jetlog to related projects

Merge pull request #45 from maxjb-xyz/feat/new-themes

fix: update theme selection logic and improve theme persistence across instances

Merge remote-tracking branch 'upstream/main' into feat/new-themes

Merge pull request #43 from maxjb-xyz/feat/server_side_searching

Merge remote-tracking branch 'upstream/main' into feat/server_side_searching

fix: enhance preview run functionality with request hashing and timeout management; improve error handling and session storage

feat: implement server-wide theming and new themes

Merge pull request #42 from maxjb-xyz/feature/default_search_setting

fix: update search method state management in SearchBar component