test: avoid vscode-test download timeouts

packages/kilo-vscode/.vscode-test.mjs

@@ -1,5 +1,24 @@
+import { existsSync } from "node:fs"
 import { defineConfig } from "@vscode/test-cli"
 
+const installs = {
+  darwin: [process.env.VSCODE_EXECUTABLE_PATH, "/Applications/Visual Studio Code.app/Contents/MacOS/Electron"],
+  win32: [
+    process.env.VSCODE_EXECUTABLE_PATH,
+    "C:/Program Files/Microsoft VS Code/Code.exe",
+    "C:/Program Files (x86)/Microsoft VS Code/Code.exe",
+  ],
+  linux: [process.env.VSCODE_EXECUTABLE_PATH, "/usr/share/code/code", "/snap/code/current/usr/share/code/code"],
+}
+
+const platform =
+  process.platform === "darwin" || process.platform === "win32" || process.platform === "linux"
+    ? process.platform
+    : undefined
+const executable = platform ? installs[platform].find((item) => item && existsSync(item)) : undefined
+
 export default defineConfig({
   files: "out/test/**/*.test.js",
+  download: { timeout: 120_000 },
+  ...(executable ? { useInstallation: { fromPath: executable } } : {}),
 })