@@ -31,6 +31,7 @@ type DialogMoveSessionProps = {
   onSelect: (selection: MoveSessionSelection) => void
   onCurrentChange?: (selection: MoveSessionSelection) => void
   initialDirectories?: ReadonlyArray<ProjectDirectory>
+  fixture?: boolean
   initialRemoving?: string
 }
 
@@ -75,7 +76,7 @@ export function DialogMoveSession(props: DialogMoveSessionProps) {
   })
 
   const [directories, { refetch }] = createResource(
-    () => (props.initialRemoving ? undefined : props.projectID),
+    () => (props.fixture || props.initialRemoving ? undefined : props.projectID),
     async (projectID, info): Promise<ReadonlyArray<ProjectDirectory> | undefined> => {
       try {
         const requestLocation = { directory: location()?.directory || paths.cwd }
@@ -110,11 +111,9 @@ export function DialogMoveSession(props: DialogMoveSessionProps) {
     if (showError()) return
     const directory = currentDirectory()
     if (!directory) return
-    return (
-      directoryData()
-        ?.filter((root) => contains(root.directory, directory))
-        .toSorted((a, b) => b.directory.length - a.directory.length)[0] ?? { directory }
-    )
+    return directoryData()
+      ?.filter((root) => contains(root.directory, directory))
+      .toSorted((a, b) => b.directory.length - a.directory.length)[0]
   })
 
   const options = createMemo<DialogSelectOption<MoveSessionSelection | undefined>[]>(() => {
@@ -123,7 +122,6 @@ export function DialogMoveSession(props: DialogMoveSessionProps) {
     const current = currentRoot()?.directory
     if (directories.loading && !data && !current) return []
     const roots = [...(data ?? [])]
-    if (current && !roots.some((item) => item.directory === current)) roots.unshift({ directory: current })
     roots.sort((a, b) => {
       if (a.directory === current) return -1
       if (b.directory === current) return 1
@@ -139,15 +137,13 @@ export function DialogMoveSession(props: DialogMoveSessionProps) {
         (session) => session.projectID === props.projectID && session.subpath && ![".", "/"].includes(session.subpath),
       )
       .map((session) => session.location.directory)
+      .filter((directory) => currentRoot() || directory !== currentDirectory())
       .filter((directory) => !roots.some((root) => root.directory === directory))
       .filter((directory, index, directories) => directories.indexOf(directory) === index)
       .map((location) => ({
         location,
         root: roots
-          .filter((root) => {
-            const relative = path.relative(root.directory, location)
-            return relative && relative !== ".." && !relative.startsWith(".." + path.sep) && !path.isAbsolute(relative)
-          })
+          .filter((root) => contains(root.directory, location))
           .toSorted((a, b) => b.directory.length - a.directory.length)[0],
       }))
       .filter((item): item is { location: string; root: ProjectDirectory } => item.root !== undefined)
@@ -325,6 +321,7 @@ export function DialogMoveSession(props: DialogMoveSessionProps) {
           </box>
         }
         renderFilter={!showError()}
+        flat={true}
         options={options()}
         emptyView={
           showError() ? (
@@ -357,7 +354,7 @@ export function DialogMoveSession(props: DialogMoveSessionProps) {
         }}
         onMove={() => setToDelete(undefined)}
         actions={
-          showError()
+          showError() || props.fixture
             ? []
             : [
                 {
 
@@ -7,23 +7,37 @@ const context = createContext<{
   readonly current: LocationGetOutput | undefined
   // The target location as set, available before the server-synced info in `current` arrives.
   readonly ref: LocationRef | undefined
+  readonly error: { readonly location: LocationRef; readonly cause: unknown } | undefined
   set: (location?: LocationRef) => void
 }>()
 
 export function LocationProvider(props: ParentProps) {
   const client = useClient()
   const data = useData()
   const [ref, setRef] = createSignal<LocationRef>()
+  const [error, setError] = createSignal<{ readonly location: LocationRef; readonly cause: unknown }>()
+  let generation = 0
   const current = createMemo(() => data.location.info(ref()))
 
   function sync(location?: LocationRef) {
     if (!location) return
+    const attempt = ++generation
     const defaultLocation = data.location.default()
     const target =
       location.directory === defaultLocation.directory && location.workspaceID === defaultLocation.workspaceID
         ? undefined
         : location
-    void data.location.sync(target).catch(() => undefined)
+    setError(undefined)
+    void data.location.sync(target).catch((cause) => {
+      const current = ref()
+      if (
+        generation !== attempt ||
+        current?.directory !== location.directory ||
+        current.workspaceID !== location.workspaceID
+      )
+        return
+      setError({ location, cause })
+    })
   }
 
   function set(location?: LocationRef) {
@@ -42,6 +56,9 @@ export function LocationProvider(props: ParentProps) {
         get ref() {
           return ref()
         },
+        get error() {
+          return error()
+        },
         set,
       }}
     >
 
@@ -3,6 +3,7 @@ import { useTerminalDimensions } from "@opentui/solid"
 import { createSignal, For, type JSX } from "solid-js"
 import { StoryFooter } from "./footer"
 import { sessionTabsStory } from "./session-tabs"
+import { sessionLocationMissingStory } from "./session-location-missing"
 
 /**
  * A story is a full-screen, fixture-driven simulation of a real production component. Stories own
@@ -14,7 +15,7 @@ export type Story = {
   render: (context: Plugin.Context) => JSX.Element
 }
 
-const stories: Story[] = [sessionTabsStory]
+const stories: Story[] = [sessionTabsStory, sessionLocationMissingStory]
 
 function Commands(props: { context: Plugin.Context }) {
   props.context.keymap.layer(() => ({
 
@@ -0,0 +1,80 @@
+import type { Plugin } from "@opencode-ai/plugin/tui"
+import { useTerminalDimensions } from "@opentui/solid"
+import { TextAttributes } from "@opentui/core"
+import { createSignal } from "solid-js"
+import { DialogMoveSession } from "../../../component/dialog-move-session"
+import { SessionLocationUnavailable } from "../../../routes/session/location-missing"
+import type { Story } from "./index"
+import { StoryFooter } from "./footer"
+
+const directory = "/Users/kit/code/open-source/opencode-workerd-profile"
+
+function SessionLocationMissingStory(props: { context: Plugin.Context }) {
+  const dimensions = useTerminalDimensions()
+  const theme = props.context.theme.contextual.elevated
+  const [message, setMessage] = createSignal("Choose another directory to continue")
+  const open = () =>
+    props.context.ui.dialog.show(() => (
+      <DialogMoveSession
+        projectID="fixture-project"
+        initialDirectories={[
+          { directory: "/Users/kit/code/open-source/opencode" },
+          {
+            directory: "/Users/kit/code/open-source/opencode-instruction-rename",
+            strategy: "git_worktree",
+          },
+        ]}
+        fixture
+        onSelect={(selection) => {
+          if (selection.type !== "directory") return
+          setMessage(`Selected ${selection.directory}`)
+          props.context.ui.dialog.clear()
+        }}
+      />
+    ))
+
+  props.context.keymap.layer(() => ({
+    commands: [
+      {
+        bind: "escape",
+        title: "Back to storybook",
+        group: "Storybook",
+        run: () => props.context.ui.router.navigate({ type: "plugin", name: "storybook" }),
+      },
+    ],
+  }))
+
+  return (
+    <box width={dimensions().width} height={dimensions().height} backgroundColor={theme.background.default}>
+      <box paddingLeft={2} paddingRight={2} paddingTop={1} flexGrow={1}>
+        <text fg={theme.text.default} attributes={TextAttributes.BOLD}>
+          Workerd Modal workspace driver
+        </text>
+        <text fg={theme.text.subdued}>build · GPT-5.6 Sol (high)</text>
+        <box height={1} />
+        <text fg={theme.text.default}>You</text>
+        <text fg={theme.text.subdued}>Test the mounted workspace and verify the deployment.</text>
+        <box height={1} />
+        <text fg={theme.text.default}>Build · GPT-5.6 Sol (high)</text>
+        <text fg={theme.text.subdued}>The deployment is verified and the worktree is clean.</text>
+        <box flexGrow={1} />
+        <SessionLocationUnavailable directory={directory} onMove={open} />
+      </box>
+      <StoryFooter
+        context={props.context}
+        title="storybook / missing session directory"
+        status={message()}
+        controls={[
+          { shortcut: "enter", label: "confirm" },
+          { shortcut: "esc", label: "back" },
+        ]}
+      />
+    </box>
+  )
+}
+
+export const sessionLocationMissingStory: Story = {
+  id: "session-location-missing",
+  title: "Missing session directory",
+  render: (context) => <SessionLocationMissingStory context={context} />,
+}
@@ -108,6 +108,7 @@ import { createSingleFlight } from "../../util/single-flight"
 import type { SessionInbox } from "@opencode-ai/schema/session-inbox"
 import { generateThinkingSyntax } from "./thinking-syntax"
 import { createDelayedPresence } from "../../util/delayed-presence"
+import { SessionLocationMissing } from "./location-missing"
 
 addDefaultParsers(parsers.parsers)
 
@@ -1145,6 +1146,19 @@ export function Session() {
                     }}
                   </Show>
                 </Match>
+                <Match
+                  when={
+                    session() &&
+                    currentLocation.error?.location.directory === session()!.location.directory &&
+                    currentLocation.error?.location.workspaceID === session()!.location.workspaceID
+                  }
+                >
+                  <SessionLocationMissing
+                    directory={session()!.location.directory}
+                    projectID={session()!.projectID}
+                    sessionID={route.sessionID}
+                  />
+                </Match>
                 <Match when={!disabled()}>
                   <Prompt
                     visible={true}