fix(app): shorten undo tooltip

packages/app/src/i18n/ar.ts

@@ -75,6 +75,7 @@ export const dict = {
   "command.workspace.toggle.description": "تمكين أو تعطيل مساحات العمل المتعددة في الشريط الجانبي",
   "command.session.undo": "تراجع",
   "command.session.undo.description": "تراجع عن الرسالة الأخيرة",
+  "command.session.undo.gitRequired": "لم يتم اكتشاف مستودع Git",
   "command.session.redo": "إعادة",
   "command.session.redo.description": "إعادة الرسالة التي تم التراجع عنها",
   "command.session.compact": "ضغط الجلسة",

packages/app/src/i18n/br.ts

@@ -75,6 +75,7 @@ export const dict = {
   "command.workspace.toggle.description": "Habilitar ou desabilitar múltiplos espaços de trabalho na barra lateral",
   "command.session.undo": "Desfazer",
   "command.session.undo.description": "Desfazer a última mensagem",
+  "command.session.undo.gitRequired": "Nenhum repositório Git detectado",
   "command.session.redo": "Refazer",
   "command.session.redo.description": "Refazer a última mensagem desfeita",
   "command.session.compact": "Compactar sessão",

packages/app/src/i18n/bs.ts

@@ -81,6 +81,7 @@ export const dict = {
   "command.workspace.toggle.description": "Omogući ili onemogući više radnih prostora u bočnoj traci",
   "command.session.undo": "Poništi",
   "command.session.undo.description": "Poništi posljednju poruku",
+  "command.session.undo.gitRequired": "Git repozitorij nije otkriven",
   "command.session.redo": "Vrati",
   "command.session.redo.description": "Vrati posljednju poništenu poruku",
   "command.session.compact": "Sažmi sesiju",

packages/app/src/i18n/da.ts

@@ -81,6 +81,7 @@ export const dict = {
   "command.workspace.toggle.description": "Aktiver eller deaktiver flere arbejdsområder i sidebjælken",
   "command.session.undo": "Fortryd",
   "command.session.undo.description": "Fortryd den sidste besked",
+  "command.session.undo.gitRequired": "Intet Git-repository fundet",
   "command.session.redo": "Omgør",
   "command.session.redo.description": "Omgør den sidste fortrudte besked",
   "command.session.compact": "Komprimér session",

packages/app/src/i18n/de.ts

@@ -79,6 +79,7 @@ export const dict = {
   "command.workspace.toggle.description": "Mehrere Arbeitsbereiche in der Seitenleiste aktivieren oder deaktivieren",
   "command.session.undo": "Rückgängig",
   "command.session.undo.description": "Letzte Nachricht rückgängig machen",
+  "command.session.undo.gitRequired": "Kein Git-Repository erkannt",
   "command.session.redo": "Wiederherstellen",
   "command.session.redo.description": "Letzte rückgängig gemachte Nachricht wiederherstellen",
   "command.session.compact": "Sitzung komprimieren",

packages/app/src/i18n/en.ts

@@ -81,6 +81,7 @@ export const dict = {
   "command.workspace.toggle.description": "Enable or disable multiple workspaces in the sidebar",
   "command.session.undo": "Undo",
   "command.session.undo.description": "Undo the last message",
+  "command.session.undo.gitRequired": "No Git repository detected",
   "command.session.redo": "Redo",
   "command.session.redo.description": "Redo the last undone message",
   "command.session.compact": "Compact session",

packages/app/src/i18n/es.ts

@@ -81,6 +81,7 @@ export const dict = {
   "command.workspace.toggle.description": "Habilitar o deshabilitar múltiples espacios de trabajo en la barra lateral",
   "command.session.undo": "Deshacer",
   "command.session.undo.description": "Deshacer el último mensaje",
+  "command.session.undo.gitRequired": "No se detectó ningún repositorio Git",
   "command.session.redo": "Rehacer",
   "command.session.redo.description": "Rehacer el último mensaje deshecho",
   "command.session.compact": "Compactar sesión",

packages/app/src/i18n/fr.ts

@@ -75,6 +75,7 @@ export const dict = {
   "command.workspace.toggle.description": "Activer ou désactiver plusieurs espaces de travail dans la barre latérale",
   "command.session.undo": "Annuler",
   "command.session.undo.description": "Annuler le dernier message",
+  "command.session.undo.gitRequired": "Aucun dépôt Git détecté",
   "command.session.redo": "Rétablir",
   "command.session.redo.description": "Rétablir le dernier message annulé",
   "command.session.compact": "Compacter la session",

packages/app/src/i18n/ja.ts

@@ -75,6 +75,7 @@ export const dict = {
   "command.workspace.toggle.description": "サイドバーでの複数のワークスペースの有効化・無効化",
   "command.session.undo": "元に戻す",
   "command.session.undo.description": "最後のメッセージを元に戻す",
+  "command.session.undo.gitRequired": "Git リポジトリが検出されませんでした",
   "command.session.redo": "やり直す",
   "command.session.redo.description": "元に戻したメッセージをやり直す",
   "command.session.compact": "セッションを圧縮",

packages/app/src/i18n/ko.ts

@@ -71,6 +71,7 @@ export const dict = {
   "command.workspace.toggle.description": "사이드바에서 다중 작업 공간 활성화 또는 비활성화",
   "command.session.undo": "실행 취소",
   "command.session.undo.description": "마지막 메시지 실행 취소",
+  "command.session.undo.gitRequired": "Git 저장소가 감지되지 않았습니다",
   "command.session.redo": "다시 실행",
   "command.session.redo.description": "마지막 실행 취소된 메시지 다시 실행",
   "command.session.compact": "세션 압축",

packages/app/src/i18n/no.ts

@@ -80,6 +80,7 @@ export const dict = {
   "command.workspace.toggle.description": "Aktiver eller deaktiver flere arbeidsområder i sidefeltet",
   "command.session.undo": "Angre",
   "command.session.undo.description": "Angre siste melding",
+  "command.session.undo.gitRequired": "Fant ikke noe Git-repositorium",
   "command.session.redo": "Gjør om",
   "command.session.redo.description": "Gjør om siste angrede melding",
   "command.session.compact": "Komprimer sesjon",

packages/app/src/i18n/pl.ts

@@ -75,6 +75,7 @@ export const dict = {
   "command.workspace.toggle.description": "Włącz lub wyłącz wiele przestrzeni roboczych na pasku bocznym",
   "command.session.undo": "Cofnij",
   "command.session.undo.description": "Cofnij ostatnią wiadomość",
+  "command.session.undo.gitRequired": "Nie wykryto repozytorium Git",
   "command.session.redo": "Ponów",
   "command.session.redo.description": "Ponów ostatnią cofniętą wiadomość",
   "command.session.compact": "Kompaktuj sesję",

packages/app/src/i18n/ru.ts

@@ -81,6 +81,7 @@ export const dict = {
   "command.workspace.toggle.description": "Включить или отключить несколько рабочих пространств в боковой панели",
   "command.session.undo": "Отменить",
   "command.session.undo.description": "Отменить последнее сообщение",
+  "command.session.undo.gitRequired": "Репозиторий Git не обнаружен",
   "command.session.redo": "Повторить",
   "command.session.redo.description": "Повторить отменённое сообщение",
   "command.session.compact": "Сжать сессию",

packages/app/src/i18n/th.ts

@@ -81,6 +81,7 @@ export const dict = {
   "command.workspace.toggle.description": "เปิดหรือปิดใช้งานพื้นที่ทำงานหลายรายการในแถบด้านข้าง",
   "command.session.undo": "ยกเลิก",
   "command.session.undo.description": "ยกเลิกข้อความล่าสุด",
+  "command.session.undo.gitRequired": "ไม่พบที่เก็บ Git",
   "command.session.redo": "ทำซ้ำ",
   "command.session.redo.description": "ทำซ้ำข้อความที่ถูกยกเลิกล่าสุด",
   "command.session.compact": "บีบอัดเซสชัน",

packages/app/src/i18n/tr.ts

@@ -85,6 +85,7 @@ export const dict = {
   "command.workspace.toggle.description": "Kenar çubuğunda birden fazla çalışma alanını göster veya gizle",
   "command.session.undo": "Geri al",
   "command.session.undo.description": "Son mesajı geri al",
+  "command.session.undo.gitRequired": "Git deposu algılanmadı",
   "command.session.redo": "Yinele",
   "command.session.redo.description": "Son geri alınan mesajı yinele",
   "command.session.compact": "Oturumu sıkıştır",

packages/app/src/i18n/uk.ts

@@ -81,6 +81,7 @@ export const dict = {
   "command.workspace.toggle.description": "Увімкнути або вимкнути декілька робочих областей на бічній панелі",
   "command.session.undo": "Скасувати",
   "command.session.undo.description": "Скасувати останнє повідомлення",
+  "command.session.undo.gitRequired": "Репозиторій Git не виявлено",
   "command.session.redo": "Повторити",
   "command.session.redo.description": "Повторити останнє скасоване повідомлення",
   "command.session.compact": "Стиснути сесію",

packages/app/src/i18n/zh.ts

@@ -108,6 +108,7 @@ export const dict = {
 
   "command.session.undo": "撤销",
   "command.session.undo.description": "撤销上一条消息",
+  "command.session.undo.gitRequired": "未检测到 Git 仓库",
   "command.session.redo": "重做",
   "command.session.redo.description": "重做上一条撤销的消息",
   "command.session.compact": "精简会话",

packages/app/src/i18n/zht.ts

@@ -85,6 +85,7 @@ export const dict = {
   "command.workspace.toggle.description": "在側邊欄啟用或停用多個工作區",
   "command.session.undo": "復原",
   "command.session.undo.description": "復原上一則訊息",
+  "command.session.undo.gitRequired": "未偵測到 Git 儲存庫",
   "command.session.redo": "重做",
   "command.session.redo.description": "重做上一則復原的訊息",
   "command.session.compact": "精簡工作階段",

packages/app/src/pages/session.tsx

@@ -92,6 +92,7 @@ import { TerminalPanel } from "@/pages/session/terminal-panel"
 import { TerminalPanelV2 } from "@/pages/session/terminal-panel-v2"
 import { useComposerCommands } from "@/pages/session/use-composer-commands"
 import { useSessionCommands } from "@/pages/session/use-session-commands"
+import { supportsSessionHistory } from "@/pages/session/session-history-actions"
 import { useSessionHashScroll } from "@/pages/session/use-session-hash-scroll"
 import { Identifier } from "@/utils/id"
 import { diffs as list } from "@/utils/diffs"
@@ -650,6 +651,7 @@ export default function Page() {
   }, desktopReviewOpen())
 
   const turnDiffs = createMemo(() => list(lastUserMessage()?.summary?.diffs))
+  const git = createMemo(() => supportsSessionHistory(sync().project?.vcs))
   const nogit = createMemo(() => {
     const project = sync().project
     return !!project && project.vcs !== "git"
@@ -1915,12 +1917,12 @@ export default function Page() {
   const restoring = createMemo(() => (restoreMutation.isPending ? restoreMutation.variables : undefined))
 
   const revert = (input: { sessionID: string; messageID: string }) => {
-    if (reverting()) return
+    if (reverting() || !git()) return
     return revertMutation.mutateAsync(input)
   }
 
   const restore = (id: string) => {
-    if (!params.id || reverting()) return
+    if (!params.id || reverting() || !git()) return
     return restoreMutation.mutateAsync(id)
   }
 
@@ -1955,7 +1957,16 @@ export default function Page() {
     download()
   }
 
-  const actions = { revert, openAttachment }
+  const actions = {
+    revert,
+    get revertDisabled() {
+      return !git()
+    },
+    get revertDisabledReason() {
+      return nogit() ? language.t("command.session.undo.gitRequired") : undefined
+    },
+    openAttachment,
+  }
 
   createEffect(() => {
     const sessionID = params.id
@@ -2187,7 +2198,8 @@ export default function Page() {
                 ? {
                     items: rolled(),
                     restoring: restoring(),
-                    disabled: reverting(),
+                    disabled: reverting() || !git(),
+                    disabledReason: nogit() ? language.t("command.session.undo.gitRequired") : undefined,
                     onRestore: restore,
                   }
                 : undefined,

packages/app/src/pages/session/composer/session-composer-region-controller.ts

@@ -18,6 +18,7 @@ export type SessionComposerRevertDock = {
   items: { id: string; text: string }[]
   restoring?: string
   disabled?: boolean
+  disabledReason?: string
   onRestore: (id: string) => void
 }
 

packages/app/src/pages/session/composer/session-composer-region.tsx

@@ -93,6 +93,7 @@ export function SessionComposerRegion(props: {
                         items={revert.items}
                         restoring={revert.restoring}
                         disabled={revert.disabled}
+                        disabledReason={revert.disabledReason}
                         onRestore={revert.onRestore}
                       />
                     </div>
@@ -118,6 +119,7 @@ export function SessionComposerRegion(props: {
                     items={revert.items}
                     restoring={revert.restoring}
                     disabled={revert.disabled}
+                    disabledReason={revert.disabledReason}
                     onRestore={revert.onRestore}
                   />
                 </div>

packages/app/src/pages/session/composer/session-revert-dock.tsx

@@ -6,6 +6,8 @@ import { IconButton } from "@opencode-ai/ui/icon-button"
 import { ButtonV2 } from "@opencode-ai/ui/v2/button-v2"
 import { Icon as IconV2 } from "@opencode-ai/ui/v2/icon"
 import { IconButtonV2 } from "@opencode-ai/ui/v2/icon-button-v2"
+import { Tooltip } from "@opencode-ai/ui/tooltip"
+import { TooltipV2 } from "@opencode-ai/ui/v2/tooltip-v2"
 import { useLanguage } from "@/context/language"
 import { useSettings } from "@/context/settings"
 
@@ -13,6 +15,7 @@ export function SessionRevertDock(props: {
   items: { id: string; text: string }[]
   restoring?: string
   disabled?: boolean
+  disabledReason?: string
   onRestore: (id: string) => void
 }) {
   const language = useLanguage()
@@ -89,15 +92,17 @@ export function SessionRevertDock(props: {
                 {(item) => (
                   <div class="flex items-center gap-2 min-w-0 py-1">
                     <span class="min-w-0 flex-1 truncate text-13-regular text-text-strong">{item.text}</span>
-                    <Button
-                      size="small"
-                      variant="secondary"
-                      class="shrink-0"
-                      disabled={props.disabled || !!props.restoring}
-                      onClick={() => props.onRestore(item.id)}
-                    >
-                      {language.t("session.revertDock.restore")}
-                    </Button>
+                    <Tooltip inactive={!props.disabledReason} value={props.disabledReason} placement="top">
+                      <Button
+                        size="small"
+                        variant="secondary"
+                        class="shrink-0"
+                        disabled={props.disabled || !!props.restoring}
+                        onClick={() => props.onRestore(item.id)}
+                      >
+                        {language.t("session.revertDock.restore")}
+                      </Button>
+                    </Tooltip>
                   </div>
                 )}
               </For>
@@ -167,15 +172,17 @@ export function SessionRevertDock(props: {
                   <span class="min-w-0 flex-1 truncate text-[13px] font-[400] leading-5 tracking-[-0.04px] text-v2-text-text-muted">
                     {item.text}
                   </span>
-                  <ButtonV2
-                    size="small"
-                    variant="neutral"
-                    class="shrink-0"
-                    disabled={props.disabled || !!props.restoring}
-                    onClick={() => props.onRestore(item.id)}
-                  >
-                    {language.t("session.revertDock.restore")}
-                  </ButtonV2>
+                  <TooltipV2 inactive={!props.disabledReason} value={props.disabledReason} placement="top">
+                    <ButtonV2
+                      size="small"
+                      variant="neutral"
+                      class="shrink-0"
+                      disabled={props.disabled || !!props.restoring}
+                      onClick={() => props.onRestore(item.id)}
+                    >
+                      {language.t("session.revertDock.restore")}
+                    </ButtonV2>
+                  </TooltipV2>
                 </div>
               )}
             </For>

packages/app/src/pages/session/session-history-actions.test.ts

@@ -0,0 +1,28 @@
+import { describe, expect, test } from "bun:test"
+import { commandPaletteOptions } from "@/context/command"
+import { sessionHistoryActions } from "./session-history-actions"
+
+describe("sessionHistoryActions", () => {
+  test("enables session history actions for Git projects", () => {
+    expect(
+      sessionHistoryActions({
+        vcs: "git",
+        sessionID: "session-1",
+        hasVisibleUserMessage: true,
+        hasRevert: true,
+      }),
+    ).toEqual({ undo: true, redo: true, revert: true })
+  })
+
+  test("disables session history actions for non-Git projects", () => {
+    const actions = sessionHistoryActions({
+      vcs: undefined,
+      sessionID: "session-1",
+      hasVisibleUserMessage: true,
+      hasRevert: true,
+    })
+
+    expect(actions).toEqual({ undo: false, redo: false, revert: false })
+    expect(commandPaletteOptions([{ id: "session.undo", title: "Undo", disabled: !actions.undo }])).toEqual([])
+  })
+})

packages/app/src/pages/session/session-history-actions.ts

@@ -0,0 +1,17 @@
+export function supportsSessionHistory(vcs?: string) {
+  return vcs === "git"
+}
+
+export function sessionHistoryActions(input: {
+  vcs?: string
+  sessionID?: string
+  hasVisibleUserMessage: boolean
+  hasRevert: boolean
+}) {
+  const git = supportsSessionHistory(input.vcs)
+  return {
+    undo: git && !!input.sessionID && input.hasVisibleUserMessage,
+    redo: git && !!input.sessionID && input.hasRevert,
+    revert: git,
+  }
+}

packages/app/src/pages/session/use-session-commands.tsx

@@ -19,6 +19,7 @@ import { extractPromptFromParts } from "@/utils/prompt"
 import { UserMessage } from "@opencode-ai/sdk/v2"
 import { useSessionLayout } from "@/pages/session/session-layout"
 import { createSessionOwnership } from "./session-ownership"
+import { sessionHistoryActions } from "./session-history-actions"
 
 export type SessionCommandContext = {
   navigateMessageByOffset: (offset: number) => void
@@ -101,6 +102,13 @@ export const useSessionCommands = (actions: SessionCommandContext) => {
     if (!revert) return userMessages()
     return userMessages().filter((m) => m.id < revert)
   }
+  const historyActions = () =>
+    sessionHistoryActions({
+      vcs: sync().project?.vcs,
+      sessionID: params.id,
+      hasVisibleUserMessage: visibleUserMessages().length > 0,
+      hasRevert: !!info()?.revert?.messageID,
+    })
 
   const showAllFiles = () => {
     if (layout.fileTree.tab() !== "changes") return
@@ -303,6 +311,7 @@ export const useSessionCommands = (actions: SessionCommandContext) => {
   }
 
   const undo = async () => {
+    if (!historyActions().undo) return
     const sessionID = params.id
     if (!sessionID) return
     const owner = sessionOwnership.capture()
@@ -331,6 +340,7 @@ export const useSessionCommands = (actions: SessionCommandContext) => {
   }
 
   const redo = async () => {
+    if (!historyActions().redo) return
     const sessionID = params.id
     if (!sessionID) return
     const owner = sessionOwnership.capture()
@@ -430,9 +440,12 @@ export const useSessionCommands = (actions: SessionCommandContext) => {
     sessionCommand({
       id: "session.undo",
       title: language.t("command.session.undo"),
-      description: language.t("command.session.undo.description"),
+      description:
+        sync().project && sync().project?.vcs !== "git"
+          ? language.t("command.session.undo.gitRequired")
+          : language.t("command.session.undo.description"),
       slash: "undo",
-      disabled: !params.id || visibleUserMessages().length === 0,
+      disabled: !historyActions().undo,
       onSelect: undo,
     }),
     sessionCommand({
@@ -440,7 +453,7 @@ export const useSessionCommands = (actions: SessionCommandContext) => {
       title: language.t("command.session.redo"),
       description: language.t("command.session.redo.description"),
       slash: "redo",
-      disabled: !params.id || !info()?.revert?.messageID,
+      disabled: !historyActions().redo,
       onSelect: redo,
     }),
     sessionCommand({

packages/session-ui/src/components/message-part.tsx

@@ -178,6 +178,8 @@ export type SessionAction = (input: { sessionID: string; messageID: string }) =>
 export type UserActions = {
   fork?: SessionAction
   revert?: SessionAction
+  revertDisabled?: boolean
+  revertDisabledReason?: JSX.Element
   openAttachment?: (file: FilePart) => void
 }
 
@@ -1380,9 +1382,9 @@ export function UserMessageDisplay(props: {
           <Show when={props.actions?.revert}>
             <MessageActionButton
               icon="reset"
-              label={i18n.t("ui.message.revertMessage")}
+              label={props.actions?.revertDisabledReason ?? i18n.t("ui.message.revertMessage")}
               useV2={props.useV2Actions}
-              disabled={!!busy()}
+              disabled={!!busy() || props.actions?.revertDisabled}
               onMouseDown={(event) => event.preventDefault()}
               onClick={(event) => {
                 event.stopPropagation()