feat(app): add inline file browser tabs (#35829)

packages/app/e2e/utils/mock-server.ts

@@ -22,6 +22,7 @@ export interface MockServerConfig {
   questions?: unknown[] | (() => unknown[])
   fileList?: (path: string) => unknown | Promise<unknown>
   fileContent?: (path: string) => unknown | Promise<unknown>
+  findFiles?: (input: { query: string; dirs?: string; limit?: number }) => unknown
   sessionStatus?: unknown
 }
 
@@ -66,6 +67,15 @@ export async function mockOpenCodeServer(page: Page, config: MockServerConfig) {
       return json(route, await config.fileList(url.searchParams.get("path") ?? ""))
     if (path === "/file/content" && config.fileContent)
       return json(route, await config.fileContent(url.searchParams.get("path") ?? ""))
+    if (path === "/find/file" && config.findFiles)
+      return json(
+        route,
+        await config.findFiles({
+          query: url.searchParams.get("query") ?? "",
+          dirs: url.searchParams.get("dirs") ?? undefined,
+          limit: url.searchParams.has("limit") ? Number(url.searchParams.get("limit")) : undefined,
+        }),
+      )
     if (path === "/api/reference")
       return json(route, {
         location: {