feat(app): polish workspace tabs and changes

Size tabs from rendered labels and switch to horizontal overflow once minimum click targets are reached, keeping the add-tab action adjacent until it must remain fixed.

Make Changes an always-expanded document with an optional desktop navigation tree, keep Git actions in their platform-owned headers, remove pinned and inline split shortcuts, and place review tabs beside Changes.

packages/app/src/i18n/resources/ko.ts

@@ -602,8 +602,6 @@ export const ko: TranslationResources = {
         pullRequest: "풀 리퀘스트",
         terminalProfilesMenu: "터미널 프로필",
         editTerminalProfiles: "프로필 편집…",
-        pinTarget: "고정",
-        unpinTarget: "고정 해제",
       },
       explorer: {
         open: "탐색기 열기",
@@ -862,14 +860,12 @@ export const ko: TranslationResources = {
         switchToUnified: "통합 diff로 전환",
         switchToSplit: "나란히 보기 diff로 전환",
         showTreeView: "폴더 트리 표시",
-        showFlatView: "플랫 파일 목록 표시",
+        hideTreeView: "폴더 트리 숨기기",
         options: "Diff 옵션",
         hideWhitespace: "공백 숨기기",
         showWhitespace: "공백 표시",
         scrollLongLines: "긴 줄 스크롤",
         wrapLongLines: "긴 줄 줄바꿈",
-        collapseAll: "모든 파일 접기",
-        expandAll: "모든 파일 펼치기",
         collapseAllFolders: "모든 폴더 축소",
         expandAllFolders: "모든 폴더 확장",
         refreshing: "새로고침 중",