diff --git a/packages/ui/src/components/instance/instance-shell2.tsx b/packages/ui/src/components/instance/instance-shell2.tsx
index ab8cbfb3..c0ad2ad6 100644
--- a/packages/ui/src/components/instance/instance-shell2.tsx
+++ b/packages/ui/src/components/instance/instance-shell2.tsx
@@ -136,7 +136,6 @@ const InstanceShell2: Component<InstanceShellProps> = (props) => {
     activeSessions,
     activeSessionIdForInstance,
     activeSessionForInstance,
-    activeSessionDiffs,
     latestTodoState,
     tokenStats,
     backgroundProcessList,
@@ -759,7 +758,6 @@ const InstanceShell2: Component<InstanceShellProps> = (props) => {
             instance={props.instance}
             activeSessionId={activeSessionIdForInstance}
             activeSession={activeSessionForInstance}
-            activeSessionDiffs={activeSessionDiffs}
             latestTodoState={latestTodoState}
             backgroundProcessList={backgroundProcessList}
             onOpenBackgroundOutput={openBackgroundOutput}
@@ -828,7 +826,6 @@ const InstanceShell2: Component<InstanceShellProps> = (props) => {
           instance={props.instance}
           activeSessionId={activeSessionIdForInstance}
           activeSession={activeSessionForInstance}
-          activeSessionDiffs={activeSessionDiffs}
           latestTodoState={latestTodoState}
           backgroundProcessList={backgroundProcessList}
           onOpenBackgroundOutput={openBackgroundOutput}
diff --git a/packages/ui/src/components/instance/shell/right-panel/RightPanel.tsx b/packages/ui/src/components/instance/shell/right-panel/RightPanel.tsx
index 874bc6da..231c1834 100644
--- a/packages/ui/src/components/instance/shell/right-panel/RightPanel.tsx
+++ b/packages/ui/src/components/instance/shell/right-panel/RightPanel.tsx
@@ -41,10 +41,7 @@ import {
   RIGHT_PANEL_CHANGES_DIFF_CONTEXT_MODE_KEY,
   RIGHT_PANEL_CHANGES_DIFF_VIEW_MODE_KEY,
   RIGHT_PANEL_CHANGES_DIFF_WORD_WRAP_KEY,
-  RIGHT_PANEL_CHANGES_LIST_OPEN_NONPHONE_KEY,
-  RIGHT_PANEL_CHANGES_LIST_OPEN_PHONE_KEY,
   RIGHT_PANEL_FILES_WORD_WRAP_KEY,
-  RIGHT_PANEL_CHANGES_SPLIT_WIDTH_KEY,
   RIGHT_PANEL_FILES_LIST_OPEN_NONPHONE_KEY,
   RIGHT_PANEL_FILES_LIST_OPEN_PHONE_KEY,
   RIGHT_PANEL_FILES_SPLIT_WIDTH_KEY,
@@ -62,7 +59,6 @@ import {
   readStoredRightPanelTab,
 } from "../storage"
 
-const LazyChangesTab = lazy(() => import("./tabs/ChangesTab"))
 const LazyGitChangesTab = lazy(() => import("./tabs/GitChangesTab"))
 const LazyFilesTab = lazy(() => import("./tabs/FilesTab"))
 const LazyStatusTab = lazy(() => import("./tabs/StatusTab"))
@@ -79,7 +75,6 @@ interface RightPanelProps {
 
   activeSessionId: Accessor<string | null>
   activeSession: Accessor<Session | null>
-  activeSessionDiffs: Accessor<any[] | undefined>
 
   latestTodoState: Accessor<ToolState | null>
   backgroundProcessList: Accessor<BackgroundProcess[]>
@@ -101,10 +96,9 @@ interface RightPanelProps {
 }
 
 const RightPanel: Component<RightPanelProps> = (props) => {
-  const [rightPanelTab, setRightPanelTab] = createSignal<RightPanelTab>(readStoredRightPanelTab("changes"))
-  const defaultStatusSectionIds = ["yolo-mode", "session-changes", "plan", "background-processes", "mcp", "lsp", "plugins"]
+  const [rightPanelTab, setRightPanelTab] = createSignal<RightPanelTab>(readStoredRightPanelTab("git-changes"))
+  const defaultStatusSectionIds = ["yolo-mode", "plan", "background-processes", "mcp", "lsp", "plugins"]
   const [rightPanelExpandedItems, setRightPanelExpandedItems] = createSignal<string[]>(defaultStatusSectionIds)
-  const [selectedFile, setSelectedFile] = createSignal<string | null>(null)
 
   const [browserPath, setBrowserPath] = createSignal(".")
   const [browserEntries, setBrowserEntries] = createSignal<FileNode[] | null>(null)
@@ -131,17 +125,14 @@ const RightPanel: Component<RightPanelProps> = (props) => {
     readStoredEnum(RIGHT_PANEL_FILES_WORD_WRAP_KEY, ["on", "off"] as const) ?? "off",
   )
 
-  const [changesSplitWidth, setChangesSplitWidth] = createSignal(320)
   const [filesSplitWidth, setFilesSplitWidth] = createSignal(320)
   const [gitChangesSplitWidth, setGitChangesSplitWidth] = createSignal(320)
-  const [activeSplitResize, setActiveSplitResize] = createSignal<"changes" | "git-changes" | "files" | null>(null)
+  const [activeSplitResize, setActiveSplitResize] = createSignal<"git-changes" | "files" | null>(null)
   const [splitResizeStartX, setSplitResizeStartX] = createSignal(0)
   const [splitResizeStartWidth, setSplitResizeStartWidth] = createSignal(0)
 
   const [filesListOpen, setFilesListOpen] = createSignal(true)
   const [filesListTouched, setFilesListTouched] = createSignal(false)
-  const [changesListOpen, setChangesListOpen] = createSignal(true)
-  const [changesListTouched, setChangesListTouched] = createSignal(false)
   const [gitChangesListOpen, setGitChangesListOpen] = createSignal(true)
   const [gitChangesListTouched, setGitChangesListTouched] = createSignal(false)
   const [gitStagedOpen, setGitStagedOpen] = createSignal(true)
@@ -149,11 +140,8 @@ const RightPanel: Component<RightPanelProps> = (props) => {
 
   const listLayoutKey = createMemo(() => (props.isPhoneLayout() ? "phone" : "nonphone"))
 
-  const listOpenStorageKey = (tab: "changes" | "git-changes" | "files") => {
+  const listOpenStorageKey = (tab: "git-changes" | "files") => {
     const layout = listLayoutKey()
-    if (tab === "changes") {
-      return layout === "phone" ? RIGHT_PANEL_CHANGES_LIST_OPEN_PHONE_KEY : RIGHT_PANEL_CHANGES_LIST_OPEN_NONPHONE_KEY
-    }
     if (tab === "git-changes") {
       return layout === "phone"
         ? RIGHT_PANEL_GIT_CHANGES_LIST_OPEN_PHONE_KEY
@@ -174,7 +162,7 @@ const RightPanel: Component<RightPanelProps> = (props) => {
       : RIGHT_PANEL_GIT_CHANGES_UNSTAGED_OPEN_NONPHONE_KEY
   }
 
-  const persistListOpen = (tab: "changes" | "git-changes" | "files", value: boolean) => {
+  const persistListOpen = (tab: "git-changes" | "files", value: boolean) => {
     if (typeof window === "undefined") return
     window.localStorage.setItem(listOpenStorageKey(tab), value ? "true" : "false")
   }
@@ -198,15 +186,6 @@ const RightPanel: Component<RightPanelProps> = (props) => {
       setFilesListTouched(false)
     }
 
-    const changesPersisted = readStoredBool(listOpenStorageKey("changes"))
-    if (changesPersisted !== null) {
-      setChangesListOpen(changesPersisted)
-      setChangesListTouched(true)
-    } else {
-      setChangesListOpen(true)
-      setChangesListTouched(false)
-    }
-
     const gitPersisted = readStoredBool(listOpenStorageKey("git-changes"))
     if (gitPersisted !== null) {
       setGitChangesListOpen(gitPersisted)
@@ -271,19 +250,13 @@ const RightPanel: Component<RightPanelProps> = (props) => {
     if (splitWidthsInitialized()) return
     if (!props.rightDrawerWidthInitialized()) return
     setSplitWidthsInitialized(true)
-    setChangesSplitWidth(clampSplitWidth(readStoredPanelWidth(RIGHT_PANEL_CHANGES_SPLIT_WIDTH_KEY, 320)))
     setFilesSplitWidth(clampSplitWidth(readStoredPanelWidth(RIGHT_PANEL_FILES_SPLIT_WIDTH_KEY, 320)))
     setGitChangesSplitWidth(clampSplitWidth(readStoredPanelWidth(RIGHT_PANEL_GIT_CHANGES_SPLIT_WIDTH_KEY, 320)))
   })
 
-  const persistSplitWidth = (mode: "changes" | "git-changes" | "files", width: number) => {
+  const persistSplitWidth = (mode: "git-changes" | "files", width: number) => {
     if (typeof window === "undefined") return
-    const key =
-      mode === "changes"
-        ? RIGHT_PANEL_CHANGES_SPLIT_WIDTH_KEY
-        : mode === "git-changes"
-          ? RIGHT_PANEL_GIT_CHANGES_SPLIT_WIDTH_KEY
-          : RIGHT_PANEL_FILES_SPLIT_WIDTH_KEY
+    const key = mode === "git-changes" ? RIGHT_PANEL_GIT_CHANGES_SPLIT_WIDTH_KEY : RIGHT_PANEL_FILES_SPLIT_WIDTH_KEY
     window.localStorage.setItem(key, String(width))
   }
 
@@ -300,16 +273,14 @@ const RightPanel: Component<RightPanelProps> = (props) => {
     const isRtl = typeof document !== "undefined" && document.documentElement.dir === "rtl"
     const delta = (event.clientX - splitResizeStartX()) * (isRtl ? -1 : 1)
     const next = clampSplitWidth(splitResizeStartWidth() + delta)
-    if (mode === "changes") setChangesSplitWidth(next)
-    else if (mode === "git-changes") setGitChangesSplitWidth(next)
+    if (mode === "git-changes") setGitChangesSplitWidth(next)
     else setFilesSplitWidth(next)
   }
 
   function splitMouseUp() {
     const mode = activeSplitResize()
     if (mode) {
-      const width =
-        mode === "changes" ? changesSplitWidth() : mode === "git-changes" ? gitChangesSplitWidth() : filesSplitWidth()
+      const width = mode === "git-changes" ? gitChangesSplitWidth() : filesSplitWidth()
       persistSplitWidth(mode, width)
     }
     stopSplitResize()
@@ -324,16 +295,14 @@ const RightPanel: Component<RightPanelProps> = (props) => {
     const isRtl = typeof document !== "undefined" && document.documentElement.dir === "rtl"
     const delta = (touch.clientX - splitResizeStartX()) * (isRtl ? -1 : 1)
     const next = clampSplitWidth(splitResizeStartWidth() + delta)
-    if (mode === "changes") setChangesSplitWidth(next)
-    else if (mode === "git-changes") setGitChangesSplitWidth(next)
+    if (mode === "git-changes") setGitChangesSplitWidth(next)
     else setFilesSplitWidth(next)
   }
 
   function splitTouchEnd() {
     const mode = activeSplitResize()
     if (mode) {
-      const width =
-        mode === "changes" ? changesSplitWidth() : mode === "git-changes" ? gitChangesSplitWidth() : filesSplitWidth()
+      const width = mode === "git-changes" ? gitChangesSplitWidth() : filesSplitWidth()
       persistSplitWidth(mode, width)
     }
     stopSplitResize()
@@ -346,22 +315,20 @@ const RightPanel: Component<RightPanelProps> = (props) => {
     onTouchEnd: splitTouchEnd,
   })
 
-  const startSplitResize = (mode: "changes" | "git-changes" | "files", clientX: number) => {
+  const startSplitResize = (mode: "git-changes" | "files", clientX: number) => {
     if (typeof document === "undefined") return
     setActiveSplitResize(mode)
     setSplitResizeStartX(clientX)
-    setSplitResizeStartWidth(
-      mode === "changes" ? changesSplitWidth() : mode === "git-changes" ? gitChangesSplitWidth() : filesSplitWidth(),
-    )
+    setSplitResizeStartWidth(mode === "git-changes" ? gitChangesSplitWidth() : filesSplitWidth())
     splitPointerDrag.start()
   }
 
-  const handleSplitResizeMouseDown = (mode: "changes" | "git-changes" | "files") => (event: MouseEvent) => {
+  const handleSplitResizeMouseDown = (mode: "git-changes" | "files") => (event: MouseEvent) => {
     event.preventDefault()
     startSplitResize(mode, event.clientX)
   }
 
-  const handleSplitResizeTouchStart = (mode: "changes" | "git-changes" | "files") => (event: TouchEvent) => {
+  const handleSplitResizeTouchStart = (mode: "git-changes" | "files") => (event: TouchEvent) => {
     const touch = event.touches[0]
     if (!touch) return
     event.preventDefault()
@@ -444,36 +411,6 @@ const RightPanel: Component<RightPanelProps> = (props) => {
     setBrowserSelectedLoading(false)
   })
 
-  const bestDiffFile = createMemo<string | null>(() => {
-    const diffs = props.activeSessionDiffs()
-    if (!Array.isArray(diffs) || diffs.length === 0) return null
-    const best = diffs.reduce((currentBest, item) => {
-      const bestAdd = typeof (currentBest as any)?.additions === "number" ? (currentBest as any).additions : 0
-      const bestDel = typeof (currentBest as any)?.deletions === "number" ? (currentBest as any).deletions : 0
-      const bestScore = bestAdd + bestDel
-
-      const add = typeof (item as any)?.additions === "number" ? (item as any).additions : 0
-      const del = typeof (item as any)?.deletions === "number" ? (item as any).deletions : 0
-      const score = add + del
-
-      if (score > bestScore) return item
-      if (score < bestScore) return currentBest
-      return String(item.file || "").localeCompare(String((currentBest as any)?.file || "")) < 0 ? item : currentBest
-    }, diffs[0])
-    return typeof (best as any)?.file === "string" ? (best as any).file : null
-  })
-
-  createEffect(() => {
-    const next = bestDiffFile()
-    if (!next) return
-    const diffs = props.activeSessionDiffs()
-    if (!Array.isArray(diffs) || diffs.length === 0) return
-
-    const current = selectedFile()
-    if (current && diffs.some((d) => d.file === current)) return
-    setSelectedFile(next)
-  })
-
   const normalizeBrowserPath = (input: string) => {
     const raw = String(input || ".").trim()
     if (!raw || raw === "./") return "."
@@ -644,22 +581,6 @@ const RightPanel: Component<RightPanelProps> = (props) => {
     setBrowserSelectedDirty(false)
   })
 
-  const handleSelectChangesFile = (file: string, closeList: boolean) => {
-    setSelectedFile(file)
-    if (closeList) {
-      setChangesListOpen(false)
-    }
-  }
-
-  const toggleChangesList = () => {
-    setChangesListTouched(true)
-    setChangesListOpen((current) => {
-      const next = !current
-      persistListOpen("changes", next)
-      return next
-    })
-  }
-
   const toggleFilesList = () => {
     setFilesListTouched(true)
     setFilesListOpen((current) => {
@@ -730,13 +651,6 @@ const RightPanel: Component<RightPanelProps> = (props) => {
   const browserScopeKey = createMemo(() => `${props.instanceId}:${worktreeSlugForViewer()}`)
   const gitScopeKey = createMemo(() => `${props.instanceId}:git:${worktreeSlugForViewer()}`)
 
-  const openChangesTabFromStatus = (file?: string) => {
-    if (file) {
-      setSelectedFile(file)
-    }
-    setRightPanelTab("changes")
-  }
-
   const handleAccordionChange = (values: string[]) => {
     setRightPanelExpandedItems(values)
   }
@@ -774,15 +688,6 @@ const RightPanel: Component<RightPanelProps> = (props) => {
           <div class="tab-scroll">
             <div class="tab-strip">
               <div class="tab-strip-tabs" role="tablist" aria-label={props.t("instanceShell.rightPanel.tabs.ariaLabel")}> 
-                <button
-                  type="button"
-                  role="tab"
-                  class={tabClass("changes")}
-                  aria-selected={rightPanelTab() === "changes"}
-                  onClick={() => setRightPanelTab("changes")}
-                >
-                  <span class="tab-label">{props.t("instanceShell.rightPanel.tabs.changes")}</span>
-                </button>
                 <button
                   type="button"
                   role="tab"
@@ -819,31 +724,6 @@ const RightPanel: Component<RightPanelProps> = (props) => {
       </div>
 
       <div class="flex-1 overflow-y-auto">
-        <Show when={rightPanelTab() === "changes"}>
-          <Suspense fallback={<RightPanelTabFallback />}>
-            <LazyChangesTab
-              t={props.t}
-              instanceId={props.instanceId}
-              activeSessionId={props.activeSessionId}
-              activeSessionDiffs={props.activeSessionDiffs}
-              selectedFile={selectedFile}
-              onSelectFile={handleSelectChangesFile}
-              diffViewMode={diffViewMode}
-              diffContextMode={diffContextMode}
-              diffWordWrapMode={diffWordWrapMode}
-              onViewModeChange={setDiffViewMode}
-              onContextModeChange={setDiffContextMode}
-              onWordWrapModeChange={setDiffWordWrapMode}
-              listOpen={changesListOpen}
-              onToggleList={toggleChangesList}
-              splitWidth={changesSplitWidth}
-              onResizeMouseDown={handleSplitResizeMouseDown("changes")}
-              onResizeTouchStart={handleSplitResizeTouchStart("changes")}
-              isPhoneLayout={props.isPhoneLayout}
-            />
-          </Suspense>
-        </Show>
-
         <Show when={rightPanelTab() === "git-changes"}>
           <Suspense fallback={<RightPanelTabFallback />}>
             <LazyGitChangesTab
@@ -939,7 +819,6 @@ const RightPanel: Component<RightPanelProps> = (props) => {
               instance={props.instance}
               activeSessionId={props.activeSessionId}
               activeSession={props.activeSession}
-              activeSessionDiffs={props.activeSessionDiffs}
               latestTodoState={props.latestTodoState}
               backgroundProcessList={props.backgroundProcessList}
               onOpenBackgroundOutput={props.onOpenBackgroundOutput}
@@ -947,7 +826,6 @@ const RightPanel: Component<RightPanelProps> = (props) => {
               onTerminateBackgroundProcess={props.onTerminateBackgroundProcess}
               expandedItems={rightPanelExpandedItems}
               onExpandedItemsChange={handleAccordionChange}
-              onOpenChangesTab={openChangesTabFromStatus}
             />
           </Suspense>
         </Show>
diff --git a/packages/ui/src/components/instance/shell/right-panel/tabs/ChangesTab.tsx b/packages/ui/src/components/instance/shell/right-panel/tabs/ChangesTab.tsx
deleted file mode 100644
index 6f6a5609..00000000
--- a/packages/ui/src/components/instance/shell/right-panel/tabs/ChangesTab.tsx
+++ /dev/null
@@ -1,240 +0,0 @@
-import { For, Show, Suspense, createMemo, lazy, type Accessor, type Component, type JSX } from "solid-js"
-
-import DiffToolbar from "../components/DiffToolbar"
-import SplitFilePanel from "../components/SplitFilePanel"
-import type { DiffContextMode, DiffViewMode, DiffWordWrapMode } from "../types"
-
-const LazyMonacoDiffViewer = lazy(() =>
-  import("../../../../file-viewer/monaco-diff-viewer").then((module) => ({ default: module.MonacoDiffViewer })),
-)
-
-interface ChangesTabProps {
-  t: (key: string, vars?: Record<string, any>) => string
-
-  instanceId: string
-  activeSessionId: Accessor<string | null>
-  activeSessionDiffs: Accessor<any[] | undefined>
-
-  selectedFile: Accessor<string | null>
-  onSelectFile: (file: string, closeList: boolean) => void
-
-  diffViewMode: Accessor<DiffViewMode>
-  diffContextMode: Accessor<DiffContextMode>
-  diffWordWrapMode: Accessor<DiffWordWrapMode>
-  onViewModeChange: (mode: DiffViewMode) => void
-  onContextModeChange: (mode: DiffContextMode) => void
-  onWordWrapModeChange: (mode: DiffWordWrapMode) => void
-
-  listOpen: Accessor<boolean>
-  onToggleList: () => void
-  splitWidth: Accessor<number>
-  onResizeMouseDown: (event: MouseEvent) => void
-  onResizeTouchStart: (event: TouchEvent) => void
-  isPhoneLayout: Accessor<boolean>
-}
-
-const ChangesTab: Component<ChangesTabProps> = (props) => {
-  const sessionId = createMemo(() => props.activeSessionId())
-  const hasSession = createMemo(() => Boolean(sessionId() && sessionId() !== "info"))
-  const diffs = createMemo(() => (hasSession() ? props.activeSessionDiffs() : null))
-
-  const sorted = createMemo<any[]>(() => {
-    const list = diffs()
-    if (!Array.isArray(list)) return []
-    return [...list].sort((a, b) => String(a.file || "").localeCompare(String(b.file || "")))
-  })
-
-  const totals = createMemo(() => {
-    return sorted().reduce(
-      (acc, item) => {
-        acc.additions += typeof item.additions === "number" ? item.additions : 0
-        acc.deletions += typeof item.deletions === "number" ? item.deletions : 0
-        return acc
-      },
-      { additions: 0, deletions: 0 },
-    )
-  })
-
-  const mostChanged = createMemo<any | null>(() => {
-    const items = sorted()
-    if (items.length === 0) return null
-    return items.reduce((best, item) => {
-      const bestAdd = typeof (best as any)?.additions === "number" ? (best as any).additions : 0
-      const bestDel = typeof (best as any)?.deletions === "number" ? (best as any).deletions : 0
-      const bestScore = bestAdd + bestDel
-
-      const add = typeof (item as any)?.additions === "number" ? (item as any).additions : 0
-      const del = typeof (item as any)?.deletions === "number" ? (item as any).deletions : 0
-      const score = add + del
-
-      if (score > bestScore) return item
-      if (score < bestScore) return best
-      return String(item.file || "").localeCompare(String((best as any)?.file || "")) < 0 ? item : best
-    }, items[0])
-  })
-
-  const selectedFileData = createMemo<any | null>(() => {
-    const currentSelected = props.selectedFile()
-    const items = sorted()
-    if (currentSelected) {
-      const match = items.find((f) => f.file === currentSelected)
-      if (match) return match
-    }
-    return mostChanged()
-  })
-
-  const scopeKey = createMemo(() => `${props.instanceId}:${hasSession() ? sessionId() : "no-session"}`)
-
-  const emptyViewerMessage = createMemo(() => {
-    if (!hasSession()) return props.t("instanceShell.sessionChanges.noSessionSelected")
-    const currentDiffs = diffs()
-    if (currentDiffs === undefined) return props.t("instanceShell.sessionChanges.loading")
-    if (!Array.isArray(currentDiffs) || currentDiffs.length === 0) return props.t("instanceShell.sessionChanges.empty")
-    return props.t("instanceShell.filesShell.viewerEmpty")
-  })
-
-  const headerPath = createMemo(() => {
-    const file = selectedFileData()
-    return file?.file ? String(file.file) : props.t("instanceShell.rightPanel.tabs.changes")
-  })
-
-  const renderContent = (): JSX.Element => {
-    const sortedList = sorted()
-    const totalsValue = totals()
-    const selected = selectedFileData()
-
-    const renderViewer = () => (
-      <div class="file-viewer-panel flex-1">
-        <div class="file-viewer-content file-viewer-content--monaco">
-          <Show
-            when={selected && hasSession() && sortedList.length > 0 ? selected : null}
-            fallback={
-              <div class="file-viewer-empty">
-                <span class="file-viewer-empty-text">{emptyViewerMessage()}</span>
-              </div>
-            }
-          >
-            {(file) => (
-<Suspense
-                  fallback={
-                    <div class="file-viewer-empty">
-                      <span class="file-viewer-empty-text">{props.t("instanceInfo.loading")}</span>
-                    </div>
-                  }
-                >
-                  <LazyMonacoDiffViewer
-                    scopeKey={scopeKey()}
-                    path={String(file().file || "")}
-                    patch={String((file() as any).patch || "")}
-                    viewMode={props.diffViewMode()}
-                    contextMode={props.diffContextMode()}
-                    wordWrap={props.diffWordWrapMode()}
-                  />
-                </Suspense>
-            )}
-          </Show>
-        </div>
-      </div>
-    )
-
-    const renderEmptyList = () => (
-      <div class="p-3 text-xs text-secondary">{emptyViewerMessage()}</div>
-    )
-
-    const renderListPanel = () => (
-      <Show when={sortedList.length > 0} fallback={renderEmptyList()}>
-        <For each={sortedList}>
-          {(item) => (
-            <div
-              class={`file-list-item ${selected?.file === item.file ? "file-list-item-active" : ""}`}
-              onClick={() => {
-                props.onSelectFile(item.file, props.isPhoneLayout())
-              }}
-            >
-              <div class="file-list-item-content">
-                <div class="file-list-item-path" title={item.file}>
-                  <span class="file-path-text">{item.file}</span>
-                </div>
-                <div class="file-list-item-stats">
-                  <span class="file-list-item-additions">+{item.additions}</span>
-                  <span class="file-list-item-deletions">-{item.deletions}</span>
-                </div>
-              </div>
-            </div>
-          )}
-        </For>
-      </Show>
-    )
-
-    const renderListOverlay = () => (
-      <Show when={sortedList.length > 0} fallback={renderEmptyList()}>
-        <For each={sortedList}>
-          {(item) => (
-            <div
-              class={`file-list-item ${selected?.file === item.file ? "file-list-item-active" : ""}`}
-              onClick={() => {
-                props.onSelectFile(item.file, true)
-              }}
-              title={item.file}
-            >
-              <div class="file-list-item-content">
-                <div class="file-list-item-path" title={item.file}>
-                  <span class="file-path-text">{item.file}</span>
-                </div>
-                <div class="file-list-item-stats">
-                  <span class="file-list-item-additions">+{item.additions}</span>
-                  <span class="file-list-item-deletions">-{item.deletions}</span>
-                </div>
-              </div>
-            </div>
-          )}
-        </For>
-      </Show>
-    )
-
-    return (
-      <SplitFilePanel
-        header={
-          <>
-            <span class="files-tab-selected-path" title={headerPath()}>
-              <span class="file-path-text">{headerPath()}</span>
-            </span>
-
-            <div class="files-tab-stats" style={{ flex: "0 0 auto" }}>
-              <span class="files-tab-stat files-tab-stat-additions">
-                <span class="files-tab-stat-value">+{totalsValue.additions}</span>
-              </span>
-              <span class="files-tab-stat files-tab-stat-deletions">
-                <span class="files-tab-stat-value">-{totalsValue.deletions}</span>
-              </span>
-            </div>
-
-            <div style={{ "margin-left": "auto" }}>
-              <DiffToolbar
-                viewMode={props.diffViewMode()}
-                contextMode={props.diffContextMode()}
-                wordWrapMode={props.diffWordWrapMode()}
-                onViewModeChange={props.onViewModeChange}
-                onContextModeChange={props.onContextModeChange}
-                onWordWrapModeChange={props.onWordWrapModeChange}
-              />
-            </div>
-          </>
-        }
-        list={{ panel: renderListPanel, overlay: renderListOverlay }}
-        viewer={renderViewer()}
-        listOpen={props.listOpen()}
-        onToggleList={props.onToggleList}
-        splitWidth={props.splitWidth()}
-        onResizeMouseDown={props.onResizeMouseDown}
-        onResizeTouchStart={props.onResizeTouchStart}
-        isPhoneLayout={props.isPhoneLayout()}
-        overlayAriaLabel={props.t("instanceShell.rightPanel.tabs.changes")}
-      />
-    )
-  }
-
-  return <>{renderContent()}</>
-}
-
-export default ChangesTab
diff --git a/packages/ui/src/components/instance/shell/right-panel/tabs/StatusTab.tsx b/packages/ui/src/components/instance/shell/right-panel/tabs/StatusTab.tsx
index 7be3284c..8dca954c 100644
--- a/packages/ui/src/components/instance/shell/right-panel/tabs/StatusTab.tsx
+++ b/packages/ui/src/components/instance/shell/right-panel/tabs/StatusTab.tsx
@@ -24,7 +24,6 @@ interface StatusTabProps {
 
   activeSessionId: Accessor<string | null>
   activeSession: Accessor<Session | null>
-  activeSessionDiffs: Accessor<any[] | undefined>
 
   latestTodoState: Accessor<ToolState | null>
 
@@ -36,7 +35,6 @@ interface StatusTabProps {
   expandedItems: Accessor<string[]>
   onExpandedItemsChange: (values: string[]) => void
 
-  onOpenChangesTab: (file?: string) => void
 }
 
 const StatusTab: Component<StatusTabProps> = (props) => {
@@ -71,85 +69,6 @@ const StatusTab: Component<StatusTabProps> = (props) => {
     )
   }
 
-  const renderStatusSessionChanges = () => {
-    const sessionId = props.activeSessionId()
-    if (!sessionId || sessionId === "info") {
-      return (
-        <div class="right-panel-empty right-panel-empty--left">
-          <span class="text-xs">{props.t("instanceShell.sessionChanges.noSessionSelected")}</span>
-        </div>
-      )
-    }
-
-    const diffs = props.activeSessionDiffs()
-    if (diffs === undefined) {
-      return (
-        <div class="right-panel-empty right-panel-empty--left">
-          <span class="text-xs">{props.t("instanceShell.sessionChanges.loading")}</span>
-        </div>
-      )
-    }
-
-    if (!Array.isArray(diffs) || diffs.length === 0) {
-      return (
-        <div class="right-panel-empty right-panel-empty--left">
-          <span class="text-xs">{props.t("instanceShell.sessionChanges.empty")}</span>
-        </div>
-      )
-    }
-
-    const sorted = [...diffs].sort((a, b) => String(a.file || "").localeCompare(String(b.file || "")))
-    const totals = sorted.reduce(
-      (acc, item) => {
-        acc.additions += typeof item.additions === "number" ? item.additions : 0
-        acc.deletions += typeof item.deletions === "number" ? item.deletions : 0
-        return acc
-      },
-      { additions: 0, deletions: 0 },
-    )
-
-    return (
-      <div class="flex flex-col gap-3 min-h-0">
-        <div class="flex items-center justify-between gap-2 text-[11px] text-secondary">
-          <span>{props.t("instanceShell.sessionChanges.filesChanged", { count: sorted.length })}</span>
-          <span class="flex items-center gap-2">
-            <span style={{ color: "var(--session-status-idle-fg)" }}>{`+${totals.additions}`}</span>
-            <span style={{ color: "var(--session-status-working-fg)" }}>{`-${totals.deletions}`}</span>
-          </span>
-        </div>
-
-        <div class="rounded-md border border-base bg-surface-secondary p-2 max-h-[40vh] overflow-y-auto">
-          <div class="flex flex-col">
-            <For each={sorted}>
-              {(item) => (
-                <button
-                  type="button"
-                  class="border-b border-base last:border-b-0 text-left hover:bg-surface-muted rounded-sm"
-                  onClick={() => props.onOpenChangesTab(item.file)}
-                  title={props.t("instanceShell.sessionChanges.actions.show")}
-                >
-                  <div class="flex items-center justify-between gap-3">
-                    <div
-                      class="text-xs font-mono text-primary min-w-0 flex-1 overflow-hidden whitespace-nowrap"
-                      title={item.file}
-                      style="text-overflow: ellipsis; direction: rtl; text-align: left; unicode-bidi: plaintext;"
-                    >
-                      {item.file}
-                    </div>
-                    <div class="flex items-center gap-2 text-[11px] flex-shrink-0">
-                      <span style={{ color: "var(--session-status-idle-fg)" }}>{`+${item.additions}`}</span>
-                      <span style={{ color: "var(--session-status-working-fg)" }}>{`-${item.deletions}`}</span>
-                    </div>
-                  </div>
-                </button>
-              )}
-            </For>
-          </div>
-        </div>
-      </div>
-    )
-  }
-
   const renderPlanSectionContent = () => {
     const sessionId = props.activeSessionId()
     if (!sessionId || sessionId === "info") {
@@ -260,12 +179,6 @@ const StatusTab: Component<StatusTabProps> = (props) => {
       tooltipKey: "instanceShell.rightPanel.sections.yoloMode.tooltip",
       render: renderYoloModeSection,
     },
-    {
-      id: "session-changes",
-      labelKey: "instanceShell.rightPanel.sections.sessionChanges",
-      tooltipKey: "instanceShell.rightPanel.sections.sessionChanges.tooltip",
-      render: renderStatusSessionChanges,
-    },
     {
       id: "plan",
       labelKey: "instanceShell.rightPanel.sections.plan",
diff --git a/packages/ui/src/components/instance/shell/right-panel/types.ts b/packages/ui/src/components/instance/shell/right-panel/types.ts
index a651383a..aa407b6e 100644
--- a/packages/ui/src/components/instance/shell/right-panel/types.ts
+++ b/packages/ui/src/components/instance/shell/right-panel/types.ts
@@ -1,4 +1,4 @@
-export type RightPanelTab = "changes" | "git-changes" | "files" | "status"
+export type RightPanelTab = "git-changes" | "files" | "status"
 
 export type DiffViewMode = "split" | "unified"
 
diff --git a/packages/ui/src/components/instance/shell/right-panel/useGitChanges.ts b/packages/ui/src/components/instance/shell/right-panel/useGitChanges.ts
index dabdd1c9..de189989 100644
--- a/packages/ui/src/components/instance/shell/right-panel/useGitChanges.ts
+++ b/packages/ui/src/components/instance/shell/right-panel/useGitChanges.ts
@@ -431,7 +431,7 @@ export function useGitChanges(options: UseGitChangesOptions) {
       if (event.type !== "instance.event") return
       if (event.instanceId !== options.instanceId) return
       const eventType = (event.event as { type?: unknown } | undefined)?.type
-      if (eventType !== "session.updated" && eventType !== "session.diff") return
+      if (eventType !== "session.updated") return
       void passiveRefreshGitStatus({ forceReloadSelectedDiff: true })
     })
 
diff --git a/packages/ui/src/components/instance/shell/storage.ts b/packages/ui/src/components/instance/shell/storage.ts
index 963f4838..f50b5f4c 100644
--- a/packages/ui/src/components/instance/shell/storage.ts
+++ b/packages/ui/src/components/instance/shell/storage.ts
@@ -12,11 +12,8 @@ export const LEFT_PIN_STORAGE_KEY = "opencode-session-left-drawer-pinned-v1"
 export const RIGHT_PIN_STORAGE_KEY = "opencode-session-right-drawer-pinned-v1"
 export const RIGHT_PANEL_TAB_STORAGE_KEY = "opencode-session-right-panel-tab-v2"
 export const LEGACY_RIGHT_PANEL_TAB_STORAGE_KEY = "opencode-session-right-panel-tab-v1"
-export const RIGHT_PANEL_CHANGES_SPLIT_WIDTH_KEY = "opencode-session-right-panel-changes-split-width-v1"
 export const RIGHT_PANEL_FILES_SPLIT_WIDTH_KEY = "opencode-session-right-panel-files-split-width-v1"
 export const RIGHT_PANEL_GIT_CHANGES_SPLIT_WIDTH_KEY = "opencode-session-right-panel-git-changes-split-width-v1"
-export const RIGHT_PANEL_CHANGES_LIST_OPEN_NONPHONE_KEY = "opencode-session-right-panel-changes-list-open-nonphone-v1"
-export const RIGHT_PANEL_CHANGES_LIST_OPEN_PHONE_KEY = "opencode-session-right-panel-changes-list-open-phone-v1"
 export const RIGHT_PANEL_FILES_LIST_OPEN_NONPHONE_KEY = "opencode-session-right-panel-files-list-open-nonphone-v1"
 export const RIGHT_PANEL_FILES_LIST_OPEN_PHONE_KEY = "opencode-session-right-panel-files-list-open-phone-v1"
 export const RIGHT_PANEL_GIT_CHANGES_LIST_OPEN_NONPHONE_KEY = "opencode-session-right-panel-git-changes-list-open-nonphone-v1"
@@ -55,13 +52,13 @@ export function persistPinState(side: "left" | "right", value: boolean) {
 }
 
 export function readStoredRightPanelTab(
-  defaultValue: "changes" | "git-changes" | "files" | "status",
-): "changes" | "git-changes" | "files" | "status" {
+  defaultValue: "git-changes" | "files" | "status",
+): "git-changes" | "files" | "status" {
   if (typeof window === "undefined") return defaultValue
 
   const stored = window.localStorage.getItem(RIGHT_PANEL_TAB_STORAGE_KEY)
   if (stored === "status") return "status"
-  if (stored === "changes") return "changes"
+  if (stored === "changes") return "git-changes"
   if (stored === "git-changes") return "git-changes"
   if (stored === "files") return "files"
 
@@ -69,7 +66,7 @@ export function readStoredRightPanelTab(
   const legacy = window.localStorage.getItem(LEGACY_RIGHT_PANEL_TAB_STORAGE_KEY)
   if (legacy === "status") return "status"
   if (legacy === "browser") return "files"
-  if (legacy === "files") return "changes"
+  if (legacy === "files") return "git-changes"
 
   return defaultValue
 }
diff --git a/packages/ui/src/components/instance/shell/useInstanceSessionContext.ts b/packages/ui/src/components/instance/shell/useInstanceSessionContext.ts
index 5eb98bf2..9b84ba86 100644
--- a/packages/ui/src/components/instance/shell/useInstanceSessionContext.ts
+++ b/packages/ui/src/components/instance/shell/useInstanceSessionContext.ts
@@ -27,7 +27,6 @@ type InstanceSessionContextState = {
   activeSessionIdForInstance: Accessor<string | null>
   parentSessionIdForInstance: Accessor<string | null>
   activeSessionForInstance: Accessor<SessionFamilyMember | null>
-  activeSessionDiffs: Accessor<SessionFamilyMember["diff"] | undefined>
 
   // Usage / info summaries
   activeSessionUsage: Accessor<SessionUsageState | null>
@@ -77,11 +76,6 @@ export function useInstanceSessionContext(options: InstanceSessionContextOptions
     return activeSessions().get(sessionId) ?? null
   })
 
-  const activeSessionDiffs = createMemo(() => {
-    const session = activeSessionForInstance()
-    return session?.diff
-  })
-
   const activeSessionUsage = createMemo(() => {
     const sessionId = activeSessionIdForInstance()
     if (!sessionId) return null
@@ -161,7 +155,6 @@ export function useInstanceSessionContext(options: InstanceSessionContextOptions
     activeSessionIdForInstance,
     parentSessionIdForInstance,
     activeSessionForInstance,
-    activeSessionDiffs,
     activeSessionUsage,
     activeSessionInfoDetails,
     tokenStats,
diff --git a/packages/ui/src/lib/i18n/messages/de/instance.ts b/packages/ui/src/lib/i18n/messages/de/instance.ts
index b32ab4f6..02cd77ea 100644
--- a/packages/ui/src/lib/i18n/messages/de/instance.ts
+++ b/packages/ui/src/lib/i18n/messages/de/instance.ts
@@ -89,7 +89,6 @@ export const instanceMessages = {
   "instanceShell.empty.description": "Senden Sie eine Nachricht, um eine neue Sitzung zu erstellen, oder wählen Sie eine bestehende Sitzung aus.",
 
   "instanceShell.rightPanel.title": "Status-Panel",
-  "instanceShell.rightPanel.tabs.changes": "Sitzungsänderungen",
   "instanceShell.rightPanel.tabs.gitChanges": "Git-Änderungen",
   "instanceShell.rightPanel.tabs.files": "Dateien",
   "instanceShell.rightPanel.tabs.status": "Status",
@@ -109,8 +108,6 @@ export const instanceMessages = {
   "instanceShell.rightPanel.toast.saveError": "Datei konnte nicht gespeichert werden",
   "instanceShell.rightPanel.sections.yoloMode": "Yolo-Modus",
   "instanceShell.rightPanel.sections.yoloMode.tooltip": "Genehmigt Berechtigungsanfragen für die aktuelle Sitzung automatisch. Nur verwenden, wenn Sie den ausgeführten Tools vertrauen.",
-  "instanceShell.rightPanel.sections.sessionChanges": "Sitzungsänderungen",
-  "instanceShell.rightPanel.sections.sessionChanges.tooltip": "In der aktuellen Sitzung geänderte Dateien. Zeigt Hinzufügungen und Löschungen für jede Datei.",
   "instanceShell.rightPanel.sections.plan": "Plan",
   "instanceShell.rightPanel.sections.plan.tooltip": "Die Roadmap des Agenten für diese Sitzung. Verfolgt Aufgaben, Unteraufgaben und deren Abschlussstatus.",
   "instanceShell.rightPanel.sections.backgroundProcesses": "Hintergrund-Shells",
@@ -122,12 +119,6 @@ export const instanceMessages = {
   "instanceShell.rightPanel.sections.plugins": "Plugins",
   "instanceShell.rightPanel.sections.plugins.tooltip": "Plugins, die die Benutzeroberfläche und das Serververhalten anpassen.",
 
-  "instanceShell.sessionChanges.noSessionSelected": "Wählen Sie eine Sitzung aus, um Änderungen zu sehen.",
-  "instanceShell.sessionChanges.loading": "Sitzungsänderungen werden abgerufen...",
-  "instanceShell.sessionChanges.empty": "Noch keine Sitzungsänderungen.",
-  "instanceShell.sessionChanges.filesChanged": "{count} Dateien geändert",
-  "instanceShell.sessionChanges.actions.show": "Änderungen anzeigen",
-
   "instanceShell.gitChanges.noSessionSelected": "Wählen Sie eine Sitzung aus, um Git-Änderungen zu sehen.",
   "instanceShell.gitChanges.loading": "Git-Änderungen werden geladen...",
   "instanceShell.gitChanges.empty": "Noch keine Git-Änderungen.",
diff --git a/packages/ui/src/lib/i18n/messages/en/instance.ts b/packages/ui/src/lib/i18n/messages/en/instance.ts
index 153adaa4..efcff08e 100644
--- a/packages/ui/src/lib/i18n/messages/en/instance.ts
+++ b/packages/ui/src/lib/i18n/messages/en/instance.ts
@@ -89,7 +89,6 @@ export const instanceMessages = {
   "instanceShell.empty.description": "Send a message below to create a new session, or select an existing session to continue.",
 
   "instanceShell.rightPanel.title": "Status Panel",
-  "instanceShell.rightPanel.tabs.changes": "Session Changes",
   "instanceShell.rightPanel.tabs.gitChanges": "Git Changes",
   "instanceShell.rightPanel.tabs.files": "Files",
   "instanceShell.rightPanel.tabs.status": "Status",
@@ -109,8 +108,6 @@ export const instanceMessages = {
   "instanceShell.rightPanel.toast.saveError": "Failed to save file",
   "instanceShell.rightPanel.sections.yoloMode": "Yolo Mode",
   "instanceShell.rightPanel.sections.yoloMode.tooltip": "Automatically approves permission requests for the current session. Use it only when you trust the tools being run.",
-  "instanceShell.rightPanel.sections.sessionChanges": "Session Changes",
-  "instanceShell.rightPanel.sections.sessionChanges.tooltip": "Files modified in the current session. Shows additions and deletions for each file.",
   "instanceShell.rightPanel.sections.plan": "Plan",
   "instanceShell.rightPanel.sections.plan.tooltip": "The agent's roadmap for this session. Tracks tasks, subtasks, and their completion status.",
   "instanceShell.rightPanel.sections.backgroundProcesses": "Background Shells",
@@ -122,12 +119,6 @@ export const instanceMessages = {
   "instanceShell.rightPanel.sections.plugins": "Plugins",
   "instanceShell.rightPanel.sections.plugins.tooltip": "Plugins that customize the UI and server behavior, adding features beyond MCP and LSP.",
 
-  "instanceShell.sessionChanges.noSessionSelected": "Select a session to view changes.",
-  "instanceShell.sessionChanges.loading": "Fetching session changes...",
-  "instanceShell.sessionChanges.empty": "No session changes yet.",
-  "instanceShell.sessionChanges.filesChanged": "{count} files changed",
-  "instanceShell.sessionChanges.actions.show": "Show changes",
-
   "instanceShell.gitChanges.noSessionSelected": "Select a session to view git changes.",
   "instanceShell.gitChanges.loading": "Loading git changes...",
   "instanceShell.gitChanges.empty": "No git changes yet.",
diff --git a/packages/ui/src/lib/i18n/messages/es/instance.ts b/packages/ui/src/lib/i18n/messages/es/instance.ts
index f01aa8de..f98dc974 100644
--- a/packages/ui/src/lib/i18n/messages/es/instance.ts
+++ b/packages/ui/src/lib/i18n/messages/es/instance.ts
@@ -89,7 +89,6 @@ export const instanceMessages = {
   "instanceShell.empty.description": "Envía un mensaje abajo para crear una nueva sesión, o selecciona una sesión existente para continuar.",
 
   "instanceShell.rightPanel.title": "Panel de estado",
-  "instanceShell.rightPanel.tabs.changes": "Cambios",
   "instanceShell.rightPanel.tabs.gitChanges": "Cambios de Git",
   "instanceShell.rightPanel.tabs.files": "Archivos",
   "instanceShell.rightPanel.tabs.status": "Estado",
@@ -109,8 +108,6 @@ export const instanceMessages = {
   "instanceShell.rightPanel.toast.saveError": "Error al guardar el archivo",
   "instanceShell.rightPanel.sections.yoloMode": "Modo yolo",
   "instanceShell.rightPanel.sections.yoloMode.tooltip": "Aprueba automaticamente las solicitudes de permiso de la sesion actual. Usalo solo si confias en las herramientas que se estan ejecutando.",
-  "instanceShell.rightPanel.sections.sessionChanges": "Cambios de sesión",
-  "instanceShell.rightPanel.sections.sessionChanges.tooltip": "Archivos modificados en la sesión actual. Muestra las adiciones y eliminaciones de cada archivo.",
   "instanceShell.rightPanel.sections.plan": "Plan",
   "instanceShell.rightPanel.sections.plan.tooltip": "Hoja de ruta del agente para esta sesión. Realiza el seguimiento de tareas, subtareas y su estado de finalización.",
   "instanceShell.rightPanel.sections.backgroundProcesses": "Shells en segundo plano",
@@ -122,12 +119,6 @@ export const instanceMessages = {
   "instanceShell.rightPanel.sections.plugins": "Plugins",
   "instanceShell.rightPanel.sections.plugins.tooltip": "Plugins que personalizan el comportamiento de la UI y del servidor, y añaden funciones más allá de MCP y LSP.",
 
-  "instanceShell.sessionChanges.noSessionSelected": "Selecciona una sesión para ver los cambios.",
-  "instanceShell.sessionChanges.loading": "Obteniendo cambios de la sesión...",
-  "instanceShell.sessionChanges.empty": "Aún no hay cambios.",
-  "instanceShell.sessionChanges.filesChanged": "{count} archivos cambiados",
-  "instanceShell.sessionChanges.actions.show": "Mostrar cambios",
-
   "instanceShell.gitChanges.loading": "Cargando cambios de Git...",
   "instanceShell.gitChanges.empty": "Aún no hay cambios de Git.",
   "instanceShell.gitChanges.deleted": "Eliminado",
diff --git a/packages/ui/src/lib/i18n/messages/fr/instance.ts b/packages/ui/src/lib/i18n/messages/fr/instance.ts
index 1f6efba1..f726e1fa 100644
--- a/packages/ui/src/lib/i18n/messages/fr/instance.ts
+++ b/packages/ui/src/lib/i18n/messages/fr/instance.ts
@@ -89,7 +89,6 @@ export const instanceMessages = {
   "instanceShell.empty.description": "Envoyez un message ci-dessous pour créer une nouvelle session, ou sélectionnez une session existante pour continuer.",
 
   "instanceShell.rightPanel.title": "Panneau d'état",
-  "instanceShell.rightPanel.tabs.changes": "Modifications",
   "instanceShell.rightPanel.tabs.gitChanges": "Changements Git",
   "instanceShell.rightPanel.tabs.files": "Fichiers",
   "instanceShell.rightPanel.tabs.status": "Statut",
@@ -109,8 +108,6 @@ export const instanceMessages = {
   "instanceShell.rightPanel.toast.saveError": "Échec de l'enregistrement du fichier",
   "instanceShell.rightPanel.sections.yoloMode": "Mode yolo",
   "instanceShell.rightPanel.sections.yoloMode.tooltip": "Approuve automatiquement les demandes d'autorisation pour la session actuelle. A utiliser seulement si vous faites confiance aux outils executes.",
-  "instanceShell.rightPanel.sections.sessionChanges": "Changements de session",
-  "instanceShell.rightPanel.sections.sessionChanges.tooltip": "Fichiers modifiés dans la session actuelle. Affiche les ajouts et suppressions pour chaque fichier.",
   "instanceShell.rightPanel.sections.plan": "Plan",
   "instanceShell.rightPanel.sections.plan.tooltip": "Feuille de route de l'agent pour cette session. Suit les tâches et leur statut d'achèvement.",
   "instanceShell.rightPanel.sections.backgroundProcesses": "Shells en arrière-plan",
@@ -122,12 +119,6 @@ export const instanceMessages = {
   "instanceShell.rightPanel.sections.plugins": "Plugins",
   "instanceShell.rightPanel.sections.plugins.tooltip": "Plugins qui personnalisent le comportement de l'UI et du serveur, ajoutant des fonctionnalités au-delà de MCP et LSP.",
 
-  "instanceShell.sessionChanges.noSessionSelected": "Sélectionnez une session pour voir les changements.",
-  "instanceShell.sessionChanges.loading": "Récupération des changements...",
-  "instanceShell.sessionChanges.empty": "Aucun changement pour l'instant.",
-  "instanceShell.sessionChanges.filesChanged": "{count} fichiers modifiés",
-  "instanceShell.sessionChanges.actions.show": "Afficher les changements",
-
   "instanceShell.gitChanges.loading": "Chargement des changements Git...",
   "instanceShell.gitChanges.empty": "Aucun changement Git pour l'instant.",
   "instanceShell.gitChanges.deleted": "Supprimé",
diff --git a/packages/ui/src/lib/i18n/messages/he/instance.ts b/packages/ui/src/lib/i18n/messages/he/instance.ts
index c0e2141e..0808ca99 100644
--- a/packages/ui/src/lib/i18n/messages/he/instance.ts
+++ b/packages/ui/src/lib/i18n/messages/he/instance.ts
@@ -89,7 +89,6 @@ export const instanceMessages = {
   "instanceShell.empty.description": "שלח הודעה למטה כדי ליצור סשן חדש, או בחר סשן קיים כדי להמשיך.",
 
   "instanceShell.rightPanel.title": "לוח סטטוס",
-  "instanceShell.rightPanel.tabs.changes": "שינויי סשן",
   "instanceShell.rightPanel.tabs.gitChanges": "שינויי Git",
   "instanceShell.rightPanel.tabs.files": "קבצים",
   "instanceShell.rightPanel.tabs.status": "סטטוס",
@@ -109,8 +108,6 @@ export const instanceMessages = {
   "instanceShell.rightPanel.toast.saveError": "כשלון בשמירת הקובץ",
   "instanceShell.rightPanel.sections.yoloMode": "מצב Yolo",
   "instanceShell.rightPanel.sections.yoloMode.tooltip": "מאשר אוטומטית בקשות הרשאה עבור הסשן הנוכחי. השתמשו בזה רק אם אתם סומכים על הכלים שרצים.",
-  "instanceShell.rightPanel.sections.sessionChanges": "שינויי סשן",
-  "instanceShell.rightPanel.sections.sessionChanges.tooltip": "קבצים שהשתנו בסשן הנוכחי. מציג הוספות ומחיקות לכל קובץ.",
   "instanceShell.rightPanel.sections.plan": "תוכנית",
   "instanceShell.rightPanel.sections.plan.tooltip": "מפת הדרכים של הסוכן לסשן זה. עוקב אחר משימות, תת-משימות וסטטוס השלמתן.",
   "instanceShell.rightPanel.sections.backgroundProcesses": "מעטפות רקע",
@@ -122,12 +119,6 @@ export const instanceMessages = {
   "instanceShell.rightPanel.sections.plugins": "תוספים",
   "instanceShell.rightPanel.sections.plugins.tooltip": "תוספים המתאימים אישית את הממשק ואת התנהגות השרת, ומוסיפים תכונות מעבר ל-MCP ו-LSP.",
 
-  "instanceShell.sessionChanges.noSessionSelected": "בחר סשן לצפייה בשינויים.",
-  "instanceShell.sessionChanges.loading": "מאחזר שינויי סשן...",
-  "instanceShell.sessionChanges.empty": "אין שינויי סשן עדיין.",
-  "instanceShell.sessionChanges.filesChanged": "{count} קבצים שונו",
-  "instanceShell.sessionChanges.actions.show": "הצג שינויים",
-
   "instanceShell.filesShell.fileListTitle": "רשימת קבצים",
   "instanceShell.filesShell.mobileSelectorLabel": "בחר קובץ",
   "instanceShell.filesShell.mobileSelectorEmpty": "בחר קובץ",
diff --git a/packages/ui/src/lib/i18n/messages/ja/instance.ts b/packages/ui/src/lib/i18n/messages/ja/instance.ts
index ca6cd551..6ff5833f 100644
--- a/packages/ui/src/lib/i18n/messages/ja/instance.ts
+++ b/packages/ui/src/lib/i18n/messages/ja/instance.ts
@@ -89,7 +89,6 @@ export const instanceMessages = {
   "instanceShell.empty.description": "下にメッセージを送信して新しいセッションを作成するか、既存のセッションを選択して続行してください。",
 
   "instanceShell.rightPanel.title": "ステータスパネル",
-  "instanceShell.rightPanel.tabs.changes": "変更",
   "instanceShell.rightPanel.tabs.gitChanges": "Git 変更",
   "instanceShell.rightPanel.tabs.files": "ファイル",
   "instanceShell.rightPanel.tabs.status": "ステータス",
@@ -109,8 +108,6 @@ export const instanceMessages = {
   "instanceShell.rightPanel.toast.saveError": "ファイルの保存に失敗しました",
   "instanceShell.rightPanel.sections.yoloMode": "Yoloモード",
   "instanceShell.rightPanel.sections.yoloMode.tooltip": "現在のセッションの権限リクエストを自動承認します。実行中のツールを信頼できる場合にのみ使用してください。",
-  "instanceShell.rightPanel.sections.sessionChanges": "セッション変更",
-  "instanceShell.rightPanel.sections.sessionChanges.tooltip": "現在のセッションで変更されたファイル。各ファイルの追加と削除を表示します。",
   "instanceShell.rightPanel.sections.plan": "計画",
   "instanceShell.rightPanel.sections.plan.tooltip": "このセッションにおけるエージェントのロードマップ。タスクやサブタスク、および完了状況を追跡します。",
   "instanceShell.rightPanel.sections.backgroundProcesses": "バックグラウンドシェル",
@@ -122,12 +119,6 @@ export const instanceMessages = {
   "instanceShell.rightPanel.sections.plugins": "プラグイン",
   "instanceShell.rightPanel.sections.plugins.tooltip": "UI とサーバーの動作をカスタマイズし、MCP や LSP 以外の機能も追加できるプラグイン。",
 
-  "instanceShell.sessionChanges.noSessionSelected": "変更を表示するにはセッションを選択してください。",
-  "instanceShell.sessionChanges.loading": "変更を取得中...",
-  "instanceShell.sessionChanges.empty": "まだ変更はありません。",
-  "instanceShell.sessionChanges.filesChanged": "{count} 個のファイルが変更されました",
-  "instanceShell.sessionChanges.actions.show": "変更を表示",
-
   "instanceShell.gitChanges.loading": "Git の変更を読み込み中...",
   "instanceShell.gitChanges.empty": "Git の変更はまだありません。",
   "instanceShell.gitChanges.deleted": "削除済み",
diff --git a/packages/ui/src/lib/i18n/messages/ne/instance.ts b/packages/ui/src/lib/i18n/messages/ne/instance.ts
index 4fa38473..6d5f30cc 100644
--- a/packages/ui/src/lib/i18n/messages/ne/instance.ts
+++ b/packages/ui/src/lib/i18n/messages/ne/instance.ts
@@ -89,7 +89,6 @@ export const instanceMessages = {
   "instanceShell.empty.description": "नयाँ सत्र सिर्जना गर्न तल सन्देश पठाउनुहोस्, वा जारी राख्न अवस्थित सत्र चयन गर्नुहोस्।",
 
   "instanceShell.rightPanel.title": "स्थिति प्यानल (Status Panel)",
-  "instanceShell.rightPanel.tabs.changes": "सत्र परिवर्तनहरू",
   "instanceShell.rightPanel.tabs.gitChanges": "Git परिवर्तनहरू",
   "instanceShell.rightPanel.tabs.files": "फाइलहरू",
   "instanceShell.rightPanel.tabs.status": "स्थिति",
@@ -109,8 +108,6 @@ export const instanceMessages = {
   "instanceShell.rightPanel.toast.saveError": "फाइल बचत गर्न असफल भयो",
   "instanceShell.rightPanel.sections.yoloMode": "Yolo मोड",
   "instanceShell.rightPanel.sections.yoloMode.tooltip": "हालको सत्रको लागि अनुमति अनुरोधहरू स्वतः स्वीकृत गर्दछ। तपाईंले चलिरहेका उपकरणहरूलाई विश्वास गर्दा मात्र यसलाई प्रयोग गर्नुहोस्।",
-  "instanceShell.rightPanel.sections.sessionChanges": "सत्र परिवर्तनहरू",
-  "instanceShell.rightPanel.sections.sessionChanges.tooltip": "हालको सत्रमा परिमार्जन गरिएका फाइलहरू।",
   "instanceShell.rightPanel.sections.plan": "योजना",
   "instanceShell.rightPanel.sections.plan.tooltip": "यस सत्रको लागि एजेन्टको मार्गचित्र।",
   "instanceShell.rightPanel.sections.backgroundProcesses": "पृष्ठभूमि शेलहरू",
@@ -122,12 +119,6 @@ export const instanceMessages = {
   "instanceShell.rightPanel.sections.plugins": "प्लगइनहरू",
   "instanceShell.rightPanel.sections.plugins.tooltip": "UI र सर्भर व्यवहार अनुकूलित गर्ने प्लगइनहरू।",
 
-  "instanceShell.sessionChanges.noSessionSelected": "परिवर्तनहरू हेर्न सत्र चयन गर्नुहोस्।",
-  "instanceShell.sessionChanges.loading": "सत्र परिवर्तनहरू प्राप्त गर्दै...",
-  "instanceShell.sessionChanges.empty": "अझै कुनै सत्र परिवर्तनहरू छैनन्।",
-  "instanceShell.sessionChanges.filesChanged": "{count} फाइलहरू परिवर्तन भए",
-  "instanceShell.sessionChanges.actions.show": "परिवर्तनहरू देखाउनुहोस्",
-
   "instanceShell.gitChanges.noSessionSelected": "Git परिवर्तनहरू हेर्न सत्र चयन गर्नुहोस्।",
   "instanceShell.gitChanges.loading": "Git परिवर्तनहरू लोड गर्दै...",
   "instanceShell.gitChanges.empty": "अझै कुनै Git परिवर्तनहरू छैनन्।",
diff --git a/packages/ui/src/lib/i18n/messages/ru/instance.ts b/packages/ui/src/lib/i18n/messages/ru/instance.ts
index bce93442..f76da0df 100644
--- a/packages/ui/src/lib/i18n/messages/ru/instance.ts
+++ b/packages/ui/src/lib/i18n/messages/ru/instance.ts
@@ -89,7 +89,6 @@ export const instanceMessages = {
   "instanceShell.empty.description": "Отправьте сообщение ниже, чтобы создать новую сессию, или выберите существующую сессию, чтобы продолжить.",
 
   "instanceShell.rightPanel.title": "Панель состояния",
-  "instanceShell.rightPanel.tabs.changes": "Изменения",
   "instanceShell.rightPanel.tabs.gitChanges": "Изменения Git",
   "instanceShell.rightPanel.tabs.files": "Файлы",
   "instanceShell.rightPanel.tabs.status": "Статус",
@@ -109,8 +108,6 @@ export const instanceMessages = {
   "instanceShell.rightPanel.toast.saveError": "Не удалось сохранить файл",
   "instanceShell.rightPanel.sections.yoloMode": "Режим Yolo",
   "instanceShell.rightPanel.sections.yoloMode.tooltip": "Автоматически одобряет запросы разрешений для текущей сессии. Включайте только если доверяете запускаемым инструментам.",
-  "instanceShell.rightPanel.sections.sessionChanges": "Изменения сессии",
-  "instanceShell.rightPanel.sections.sessionChanges.tooltip": "Файлы, измененные в текущей сессии. Показывает добавления и удаления для каждого файла.",
   "instanceShell.rightPanel.sections.plan": "План",
   "instanceShell.rightPanel.sections.plan.tooltip": "Дорожная карта агента для этой сессии. Отслеживает задачи и их статус выполнения.",
   "instanceShell.rightPanel.sections.backgroundProcesses": "Фоновые оболочки",
@@ -122,12 +119,6 @@ export const instanceMessages = {
   "instanceShell.rightPanel.sections.plugins": "Плагины",
   "instanceShell.rightPanel.sections.plugins.tooltip": "Плагины, настраивающие поведение интерфейса и сервера, добавляющие функции поверх MCP и LSP.",
 
-  "instanceShell.sessionChanges.noSessionSelected": "Выберите сессию, чтобы просмотреть изменения.",
-  "instanceShell.sessionChanges.loading": "Загрузка изменений...",
-  "instanceShell.sessionChanges.empty": "Пока нет изменений.",
-  "instanceShell.sessionChanges.filesChanged": "Изменено файлов: {count}",
-  "instanceShell.sessionChanges.actions.show": "Показать изменения",
-
   "instanceShell.gitChanges.loading": "Загрузка изменений Git...",
   "instanceShell.gitChanges.empty": "Изменений Git пока нет.",
   "instanceShell.gitChanges.deleted": "Удалено",
diff --git a/packages/ui/src/lib/i18n/messages/zh-Hans/instance.ts b/packages/ui/src/lib/i18n/messages/zh-Hans/instance.ts
index 70a378c9..dc6dbd64 100644
--- a/packages/ui/src/lib/i18n/messages/zh-Hans/instance.ts
+++ b/packages/ui/src/lib/i18n/messages/zh-Hans/instance.ts
@@ -89,7 +89,6 @@ export const instanceMessages = {
   "instanceShell.empty.description": "在下方发送消息以创建新会话，或选择现有会话继续。",
 
   "instanceShell.rightPanel.title": "状态面板",
-  "instanceShell.rightPanel.tabs.changes": "更改",
   "instanceShell.rightPanel.tabs.gitChanges": "Git 更改",
   "instanceShell.rightPanel.tabs.files": "文件",
   "instanceShell.rightPanel.tabs.status": "状态",
@@ -109,8 +108,6 @@ export const instanceMessages = {
   "instanceShell.rightPanel.toast.saveError": "保存文件失败",
   "instanceShell.rightPanel.sections.yoloMode": "Yolo 模式",
   "instanceShell.rightPanel.sections.yoloMode.tooltip": "自动批准当前会话的权限请求。仅在你信任正在运行的工具时启用。",
-  "instanceShell.rightPanel.sections.sessionChanges": "会话更改",
-  "instanceShell.rightPanel.sections.sessionChanges.tooltip": "当前会话中修改的文件。显示每个文件的添加和删除。",
   "instanceShell.rightPanel.sections.plan": "计划",
   "instanceShell.rightPanel.sections.plan.tooltip": "代理的路线图。跟踪任务、子任务及其完成状态。",
   "instanceShell.rightPanel.sections.backgroundProcesses": "后台 Shell",
@@ -122,12 +119,6 @@ export const instanceMessages = {
   "instanceShell.rightPanel.sections.plugins": "插件",
   "instanceShell.rightPanel.sections.plugins.tooltip": "自定义 UI 和服务器行为的插件，添加超出 MCP 和 LSP 的功能。",
 
-  "instanceShell.sessionChanges.noSessionSelected": "选择会话以查看更改。",
-  "instanceShell.sessionChanges.loading": "正在获取会话更改...",
-  "instanceShell.sessionChanges.empty": "暂无会话更改。",
-  "instanceShell.sessionChanges.filesChanged": "已更改 {count} 个文件",
-  "instanceShell.sessionChanges.actions.show": "显示更改",
-
   "instanceShell.gitChanges.loading": "正在加载 Git 更改...",
   "instanceShell.gitChanges.empty": "暂无 Git 更改。",
   "instanceShell.gitChanges.deleted": "已删除",
diff --git a/packages/ui/src/lib/sse-manager.ts b/packages/ui/src/lib/sse-manager.ts
index 8fa3dfdc..47b9ea80 100644
--- a/packages/ui/src/lib/sse-manager.ts
+++ b/packages/ui/src/lib/sse-manager.ts
@@ -10,7 +10,6 @@ import type {
   EventLspUpdated,
 
   EventSessionCompacted,
-  EventSessionDiff,
   EventSessionError,
   EventSessionIdle,
   EventSessionUpdated,
@@ -77,7 +76,6 @@ type SSEEvent =
   | MessagePartDeltaEvent
   | EventSessionUpdated
   | EventSessionCompacted
-  | EventSessionDiff
   | EventSessionError
   | EventSessionIdle
   | EventSessionStatus
@@ -168,9 +166,6 @@ class SSEManager {
       case "session.status":
         this.onSessionStatus?.(instanceId, event as EventSessionStatus)
         break
-      case "session.diff":
-        this.onSessionDiff?.(instanceId, event as EventSessionDiff)
-        break
       case "permission.asked":
       case "permission.updated":
         this.onPermissionUpdated?.(instanceId, event as any)
@@ -234,7 +229,6 @@ class SSEManager {
   onTuiToast?: (instanceId: string, event: TuiToastEvent) => void
   onSessionIdle?: (instanceId: string, event: EventSessionIdle) => void
   onSessionStatus?: (instanceId: string, event: EventSessionStatus) => void
-  onSessionDiff?: (instanceId: string, event: EventSessionDiff) => void
   onPermissionUpdated?: (instanceId: string, event: EventPermissionV2Asked | LegacyPermissionAskedEvent) => void
   onPermissionReplied?: (instanceId: string, event: EventPermissionV2Replied | LegacyPermissionRepliedEvent) => void
   onQuestionAsked?: (instanceId: string, event: EventQuestionV2Asked | { type: "question.asked"; properties?: any }) => void
diff --git a/packages/ui/src/stores/session-api.ts b/packages/ui/src/stores/session-api.ts
index 0eb6e9b5..ac89ed65 100644
--- a/packages/ui/src/stores/session-api.ts
+++ b/packages/ui/src/stores/session-api.ts
@@ -7,7 +7,7 @@ import {
   type SessionStatus,
 } from "../types/session"
 import type { Message } from "../types/message"
-import type { SnapshotFileDiff, SessionV2Info, V2SessionsResponse } from "@opencode-ai/sdk/v2/client"
+import type { SessionV2Info, V2SessionsResponse } from "@opencode-ai/sdk/v2/client"
 
 import { instances } from "./instances"
 import { preferences, setAgentModelPreference } from "./preferences"
@@ -61,8 +61,6 @@ import { hydrateSessionMetadataWithClient } from "./session-metadata"
 
 const log = getLogger("api")
 
-const pendingSessionDiffFetches = new Map<string, Promise<void>>()
-
 function getErrorMessage(error: unknown): string {
   if (!error) return "Failed to load messages"
 
@@ -89,46 +87,6 @@ async function getSessionWorkspacePayload(instanceId: string, sessionId: string)
   return workspace ? { workspace } : {}
 }
 
-async function loadSessionDiff(instanceId: string, sessionId: string, force = false): Promise<void> {
-  if (!instanceId || !sessionId) return
-
-  const key = `${instanceId}:${sessionId}`
-  if (!force) {
-    const existing = sessions().get(instanceId)?.get(sessionId)
-    if (existing?.diff !== undefined) return
-    const pending = pendingSessionDiffFetches.get(key)
-    if (pending) return pending
-  }
-
-  const promise = (async () => {
-    const instance = instances().get(instanceId)
-    if (!instance?.client) return
-
-    const client = getRootClient(instanceId)
-
-    try {
-      const diffs = await requestData<SnapshotFileDiff[]>(
-        client.session.diff({ sessionID: sessionId, ...(await getSessionWorkspacePayload(instanceId, sessionId)) }),
-        "session.diff",
-      )
-
-      if (!Array.isArray(diffs)) {
-        return
-      }
-
-      withSession(instanceId, sessionId, (session) => {
-        session.diff = diffs
-      })
-    } catch (error) {
-      log.warn("Failed to fetch session diff", { instanceId, sessionId, error })
-    }
-  })()
-
-  pendingSessionDiffFetches.set(key, promise)
-  void promise.finally(() => pendingSessionDiffFetches.delete(key))
-  return promise
-}
-
 interface SessionForkResponse {
   id: string
   title?: string
@@ -474,7 +432,6 @@ function toClientSessionV2(instanceId: string, apiSession: SessionV2Info, existi
     },
     metadata: existingSession?.metadata,
     revert: existingSession?.revert,
-    diff: existingSession?.diff,
     pendingPermission: existingSession?.pendingPermission,
     pendingQuestion: existingSession?.pendingQuestion,
   }
@@ -851,10 +808,9 @@ async function fetchProviders(instanceId: string): Promise<void> {
 async function loadMessages(
   instanceId: string,
   sessionId: string,
-  options?: { force?: boolean; skipDiff?: boolean; skipChildren?: boolean },
+  options?: { force?: boolean; skipChildren?: boolean },
 ): Promise<void> {
   const force = options?.force ?? false
-  const skipDiff = options?.skipDiff ?? false
   const skipChildren = options?.skipChildren ?? false
 
   if (force) {
@@ -896,12 +852,6 @@ async function loadMessages(
     throw new Error("Session not found")
   }
 
-  if (!skipDiff) {
-    void loadSessionDiff(instanceId, sessionId).catch((error) => {
-      log.warn("Failed to load session diff", { instanceId, sessionId, error })
-    })
-  }
-
   setLoading((prev) => {
     const next = { ...prev }
     const loadingSet = next.loadingMessages.get(instanceId) || new Set()
@@ -1048,7 +998,7 @@ async function loadMessages(
 
   if (!skipChildren && session.parentId === null) {
     for (const child of getDescendantSessions(instanceId, sessionId)) {
-      void loadMessages(instanceId, child.id, { skipDiff: true, skipChildren: true }).catch((error) =>
+      void loadMessages(instanceId, child.id, { skipChildren: true }).catch((error) =>
         log.error("Failed to load child session messages", {
           instanceId,
           sessionId: child.id,
diff --git a/packages/ui/src/stores/session-events.ts b/packages/ui/src/stores/session-events.ts
index 8f87e936..90430b1f 100644
--- a/packages/ui/src/stores/session-events.ts
+++ b/packages/ui/src/stores/session-events.ts
@@ -8,7 +8,6 @@ import type {
 } from "../types/message"
 import type {
   EventSessionCompacted,
-  EventSessionDiff,
   EventSessionError,
   EventSessionIdle,
   EventSessionUpdated,
@@ -563,31 +562,6 @@ function handleSessionUpdate(instanceId: string, event: EventSessionUpdated): vo
   }
 }
 
-function handleSessionDiff(instanceId: string, event: EventSessionDiff): void {
-  const sessionId = event.properties?.sessionID
-  if (!sessionId) return
-
-  const diffs = event.properties?.diff
-  if (!Array.isArray(diffs)) return
-
-  const existing = sessions().get(instanceId)?.get(sessionId)
-  if (existing) {
-    withSession(instanceId, sessionId, (session) => {
-      session.diff = diffs
-    })
-    return
-  }
-
-  // A diff event can arrive before we have hydrated the session list.
-  // Best-effort: fetch the session record so the diff has somewhere to live.
-  void (async () => {
-    await fetchSessionInfo(instanceId, sessionId, (event as any)?.directory)
-    withSession(instanceId, sessionId, (session) => {
-      session.diff = diffs
-    })
-  })().catch((error) => log.warn("Failed to hydrate session for diff event", { instanceId, sessionId, error }))
-}
-
 function handleSessionIdle(instanceId: string, event: EventSessionIdle): void {
   const sessionId = event.properties?.sessionID
   if (!sessionId) return
@@ -799,7 +773,6 @@ export {
   handleQuestionAsked,
   handleQuestionAnswered,
   handleSessionCompacted,
-  handleSessionDiff,
   handleSessionError,
   handleSessionIdle,
   handleSessionStatus,
diff --git a/packages/ui/src/stores/sessions.ts b/packages/ui/src/stores/sessions.ts
index 9dc353d2..365fa8c3 100644
--- a/packages/ui/src/stores/sessions.ts
+++ b/packages/ui/src/stores/sessions.ts
@@ -80,7 +80,6 @@ import {
   handleQuestionAnswered,
   handleQuestionAsked,
   handleSessionCompacted,
-  handleSessionDiff,
   handleSessionError,
   handleSessionIdle,
   handleSessionStatus,
@@ -95,7 +94,6 @@ sseManager.onMessageRemoved = handleMessageRemoved
 sseManager.onMessagePartRemoved = handleMessagePartRemoved
 sseManager.onSessionUpdate = handleSessionUpdate
 sseManager.onSessionCompacted = handleSessionCompacted
-sseManager.onSessionDiff = handleSessionDiff
 sseManager.onSessionError = handleSessionError
 sseManager.onSessionIdle = handleSessionIdle
 sseManager.onSessionStatus = handleSessionStatus
diff --git a/packages/ui/src/types/session.ts b/packages/ui/src/types/session.ts
index 067ec63e..fa2ded5e 100644
--- a/packages/ui/src/types/session.ts
+++ b/packages/ui/src/types/session.ts
@@ -4,7 +4,7 @@ import type {
   Provider as SDKProvider,
   Model as SDKModel,
 } from "@opencode-ai/sdk"
-import type { SessionStatus as SDKSessionStatus, SnapshotFileDiff } from "@opencode-ai/sdk/v2/client"
+import type { SessionStatus as SDKSessionStatus } from "@opencode-ai/sdk/v2/client"
 
 // Export SDK types for external use
 export type { 
@@ -77,7 +77,6 @@ export interface Session
   retry?: SessionRetryState | null // Retry metadata for transient backoff states
   idleSince?: number | null // Timestamp set when work finished but the session has not been viewed yet
   metadata?: Record<string, unknown> // Session metadata persisted by OpenCode
-  diff?: SnapshotFileDiff[] // Session-level file diffs (hydrated via session.diff)
 }
 
 // Adapter function to convert SDK Session to client Session