fix: restore macOS integration CI

Author: TheStreamCode

AGENTS.md

@@ -37,6 +37,11 @@ The integration suite downloads/caches VS Code builds under `.vscode-test/` (git
 `@vscode/test-electron`, launches a real Extension Development Host, and needs a display on Linux
 (CI starts Xvfb for it).
 
+Keep `@vscode/test-electron` at **3.1.0 or newer**. VS Code 1.110 renamed the macOS executable from
+`Electron` to the product name, and the compatibility symlink was removed in July 2026. Older test
+harnesses still hard-code `Contents/MacOS/Electron` and fail with `ENOENT` on Apple Silicon runners
+before the integration suite can start.
+
 **Never assert on `vscode.window.activeTerminal`.** It only follows `terminal.show()` when the window
 holds real OS focus, and a headless macOS runner will not move focus between a terminal in the editor
 area (where launches land, since `terminalLocation` defaults to `beside`) and one in the panel. For

CHANGELOG.md

@@ -9,6 +9,8 @@ All notable changes to this project are documented here. The format is based on
 
 ### Fixed
 
+- Updated the VS Code integration-test harness for the current macOS app executable layout, restoring
+  CI on Apple Silicon runners after the legacy `Electron` compatibility path was removed upstream.
 - Preserved a favorite when its built-in preset is hidden but a custom agent override with the same
   id remains available.
 - Escaped backslashes before Markdown delimiters in Agent Doctor reports, preventing version output

package-lock.json

@@ -565,7 +565,7 @@
   "devDependencies": {
     "@types/node": "^22.0.0",
     "@types/vscode": "1.93.0",
-    "@vscode/test-electron": "^2.5.2",
+    "@vscode/test-electron": "^3.1.0",
     "@vscode/vsce": "^3.0.0",
     "typescript": "^7.0.2"
   }

package.json

@@ -217,6 +217,7 @@ test('package scripts use deterministic local tooling entry points', () => {
   assert.equal(packageJson.scripts.compile, 'node ./node_modules/typescript/bin/tsc -p . --pretty false');
   assert.equal(packageJson.scripts.package, 'node ./node_modules/@vscode/vsce/vsce package');
   assert.match(packageJson.scripts.check, /vsce ls$/);
+  assert.equal(packageJson.devDependencies['@vscode/test-electron'], '^3.1.0');
 });
 
 test('extension keeps Marketplace, sidebar, and toolbar artwork packaged', () => {