fix(web): Open in → Finder in the file preview opened the file in its default app instead of revealing it

apps/web/src/components/chat/OpenInPicker.browser.test.tsx

@@ -98,15 +98,20 @@ afterEach(async () => {
   vi.unstubAllGlobals();
 });
 
-async function renderPicker(availableEditors: readonly EditorId[] = editors, panel = false) {
+async function renderPicker(
+  availableEditors: readonly EditorId[] = editors,
+  panel = false,
+  { openInCwd = "/work/project", revealFileManager = false } = {},
+) {
   await act(async () => {
     for (const listener of state.listeners) listener();
     const node = (
       <OpenInPicker
         environmentId={selected}
         keybindings={DEFAULT_RESOLVED_KEYBINDINGS}
         availableEditors={availableEditors}
-        openInCwd="/work/project"
+        openInCwd={openInCwd}
+        revealFileManager={revealFileManager}
         displayMode={panel ? "panel" : "toolbar"}
         compact={!panel}
       />
@@ -208,6 +213,19 @@ describe("host editor access", () => {
   });
 });
 
+it("reveals a file in the file manager instead of opening it", async () => {
+  state.allowed.add(selected);
+  await renderPicker(["file-manager"], false, {
+    openInCwd: "/work/project/README.md",
+    revealFileManager: true,
+  });
+  await click(primaryButton());
+  expect(state.run).toHaveBeenCalledExactlyOnceWith({
+    environmentId: selected,
+    input: { cwd: "/work/project/README.md", editor: "file-manager", reveal: true },
+  });
+});
+
 describe("client editor links", () => {
   it("opens an SSH editor URL without host operate permission", async () => {
     state.remote = { mode: "remote-links", host: { kind: "ssh-alias", host: "test-host" } };

apps/web/src/components/chat/OpenInPicker.tsx

@@ -212,6 +212,7 @@ export const OpenInPicker = memo(function OpenInPicker({
   compact = false,
   enableShortcut = true,
   displayMode = "toolbar",
+  revealFileManager = false,
 }: {
   environmentId: EnvironmentId;
   keybindings: ResolvedKeybindingsConfig;
@@ -221,6 +222,7 @@ export const OpenInPicker = memo(function OpenInPicker({
   compact?: boolean;
   enableShortcut?: boolean;
   displayMode?: "toolbar" | "panel";
+  revealFileManager?: boolean;
 }) {
   const isPanel = displayMode === "panel";
   const ActionGroup = isPanel ? "div" : Group;
@@ -266,6 +268,7 @@ export const OpenInPicker = memo(function OpenInPicker({
       input: {
         cwd: openInCwd,
         editor,
+        ...(revealFileManager && editor === "file-manager" ? { reveal: true } : {}),
       },
     });
     setPreferredEditor(editor);

apps/web/src/components/files/FilePreviewPanel.tsx

@@ -13,6 +13,7 @@ import {
   isWorkspaceImagePreviewPath,
   isWorkspaceVideoPreviewPath,
 } from "@t3tools/shared/filePreview";
+import { useAtomValue } from "@effect/atom-react";
 import {
   DEFAULT_TOKENIZE_MAX_LENGTH,
   VirtualizedFile,
@@ -67,6 +68,7 @@ import { assetEnvironment } from "~/state/assets";
 import { usePreviewAvailable } from "~/browser/previewRuntime";
 import { useEnvironmentHttpBaseUrl, usePrimaryEnvironmentId } from "~/state/environments";
 import { previewEnvironment } from "~/state/preview";
+import { serverEnvironment } from "~/state/server";
 import { useEnvironmentScope } from "~/state/session";
 import { useAtomCommand } from "~/state/use-atom-command";
 import { useAtomQueryRunner } from "~/state/use-atom-query-runner";
@@ -991,6 +993,7 @@ export default function FilePreviewPanel({
   const canOperatePreview = useEnvironmentScope(environmentId, AuthPreviewOperateScope);
   const primaryEnvironmentId = usePrimaryEnvironmentId();
   const remoteOpenState = useRemoteOpenState(environmentId);
+  const serverConfig = useAtomValue(serverEnvironment.configValueAtom(environmentId));
   const environmentHttpBaseUrl = useEnvironmentHttpBaseUrl(environmentId);
   const previewAvailable = usePreviewAvailable(environmentId);
   const createAssetUrl = useAtomQueryRunner(assetEnvironment.createUrl, {
@@ -1036,6 +1039,12 @@ export default function FilePreviewPanel({
     attachment === undefined &&
     (file.isNotFile || (folderTrail !== undefined && file.data === null && file.error === null));
   const hostFolderPath = isFolder && isHostFile ? relativePath : null;
+  // A chat-linked folder reads as a file until its read settles, and revealing a
+  // folder selects it in its parent instead of opening it, so reveal waits.
+  const revealsInFileManager =
+    !isFolder &&
+    (file.data !== null || file.error !== null) &&
+    serverConfig?.shellRevealInFileManager === true;
   // Everything preview-related keys off previewPath; a folder has no preview.
   const previewPath = isFolder ? null : relativePath;
   const [explorerOpen, setExplorerOpen] = useState(initialExplorerOpen);
@@ -1229,6 +1238,7 @@ export default function FilePreviewPanel({
               availableEditors={availableEditors}
               openInCwd={absolutePath}
               compact
+              revealFileManager={revealsInFileManager}
             />
           ) : null}
           {canToggleRendered && renderedMode ? (