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/pt-BR.ts

@@ -604,8 +604,6 @@ export const ptBR: TranslationResources = {
         pullRequest: "Pull request",
         terminalProfilesMenu: "Perfis de terminal",
         editTerminalProfiles: "Editar perfis…",
-        pinTarget: "Fixar",
-        unpinTarget: "Desafixar",
       },
       explorer: {
         open: "Abrir explorador",
@@ -877,14 +875,12 @@ export const ptBR: TranslationResources = {
         switchToUnified: "Alternar para diff unificado",
         switchToSplit: "Alternar para diff lado a lado",
         showTreeView: "Mostrar árvore de pastas",
-        showFlatView: "Mostrar lista plana de arquivos",
+        hideTreeView: "Ocultar árvore de pastas",
         options: "Opções do diff",
         hideWhitespace: "Ocultar espaços em branco",
         showWhitespace: "Mostrar espaços em branco",
         scrollLongLines: "Rolar linhas longas",
         wrapLongLines: "Quebrar linhas longas",
-        collapseAll: "Recolher todos os arquivos",
-        expandAll: "Expandir todos os arquivos",
         collapseAllFolders: "Recolher todas as pastas",
         expandAllFolders: "Expandir todas as pastas",
         refreshing: "Atualizando",