fix(e2e): cross-protocol browser.execute() — works with both WebDriver + CDP

Root cause: WebDriverIO devtools protocol wraps functions in a polyfill
that puts `return` inside eval() (not a function body) → "Illegal return".

Fix: exec() wrapper in helpers/execute.ts converts function args to IIFE
strings before passing to browser.execute(). Works identically on both
WebDriver (Tauri) and CDP/devtools (Electrobun CEF).

- 35 spec files updated (browser.execute → exec)
- 4 config files updated (string-form expressions)
- helpers/actions.ts + assertions.ts updated
- 560 vitest + 116 cargo passing

tests/e2e/helpers/actions.ts

@@ -1,11 +1,12 @@
 /**
  * Reusable test actions — common UI operations used across spec files.
  *
- * All actions use browser.execute() for DOM queries with fallback selectors
- * to support both Tauri and Electrobun UIs (WebKitGTK reliability pattern).
+ * All actions use exec() (cross-protocol safe wrapper) for DOM queries with
+ * fallback selectors to support both Tauri and Electrobun UIs.
  */
 
 import { browser } from '@wdio/globals';
+import { exec } from './execute.ts';
 import * as S from './selectors.ts';
 
 /**
@@ -30,8 +31,7 @@ export async function waitForPort(port: number, timeout: number): Promise<void>
 
 /** Open settings panel via gear icon click */
 export async function openSettings(): Promise<void> {
-  // Try clicking settings button — may need multiple attempts on WebKitGTK
-  await browser.execute(() => {
+  await exec(() => {
     const btn = document.querySelector('[data-testid="settings-btn"]')
       ?? document.querySelector('.sidebar-icon')
       ?? document.querySelector('.rail-btn');
@@ -40,7 +40,7 @@ export async function openSettings(): Promise<void> {
   await browser.pause(300);
 
   // Check if panel opened; if not, try keyboard shortcut (Ctrl+,)
-  const opened = await browser.execute(() =>
+  const opened = await exec(() =>
     document.querySelector('.sidebar-panel, .settings-drawer, .settings-panel') !== null,
   );
   if (!opened) {
@@ -48,19 +48,19 @@ export async function openSettings(): Promise<void> {
     await browser.pause(300);
   }
 
-  // Wait for either settings panel class (Tauri: .sidebar-panel, Electrobun: .settings-drawer)
+  // Wait for either settings panel class
   await browser.waitUntil(
     async () =>
-      browser.execute(() =>
+      exec(() =>
         document.querySelector('.sidebar-panel, .settings-drawer, .settings-panel') !== null,
-      ) as Promise<boolean>,
+      ),
     { timeout: 5_000 },
   );
 }
 
 /** Close settings panel */
 export async function closeSettings(): Promise<void> {
-  await browser.execute(() => {
+  await exec(() => {
     const btn = document.querySelector('.settings-close')
       ?? document.querySelector('.panel-close');
     if (btn) (btn as HTMLElement).click();
@@ -70,8 +70,7 @@ export async function closeSettings(): Promise<void> {
 
 /** Switch to a settings category by index (0-based) */
 export async function switchSettingsCategory(index: number): Promise<void> {
-  await browser.execute((idx: number) => {
-    // Tauri: .settings-sidebar .sidebar-item  |  Electrobun: .settings-tab or .cat-btn
+  await exec((idx: number) => {
     const tabs = document.querySelectorAll('.settings-sidebar .sidebar-item, .settings-tab, .cat-btn');
     if (tabs[idx]) (tabs[idx] as HTMLElement).click();
   }, index);
@@ -80,7 +79,7 @@ export async function switchSettingsCategory(index: number): Promise<void> {
 
 /** Switch active group by clicking the nth group button (0-based) */
 export async function switchGroup(index: number): Promise<void> {
-  await browser.execute((idx: number) => {
+  await exec((idx: number) => {
     const groups = document.querySelectorAll('.group-btn:not(.add-group-btn)');
     if (groups[idx]) (groups[idx] as HTMLElement).click();
   }, index);
@@ -126,7 +125,7 @@ export async function closeSearch(): Promise<void> {
 
 /** Add a new terminal tab by clicking the add button */
 export async function addTerminalTab(): Promise<void> {
-  await browser.execute(() => {
+  await exec(() => {
     const btn = document.querySelector('.tab-add-btn');
     if (btn) (btn as HTMLElement).click();
   });
@@ -135,8 +134,7 @@ export async function addTerminalTab(): Promise<void> {
 
 /** Click a project-level tab (model, docs, files, etc.) */
 export async function clickProjectTab(tabName: string): Promise<void> {
-  await browser.execute((name: string) => {
-    // Tauri: .ptab  |  Electrobun: .project-tab or .tab-btn
+  await exec((name: string) => {
     const tabs = document.querySelectorAll('.ptab, .project-tab, .tab-btn');
     for (const tab of tabs) {
       if ((tab as HTMLElement).textContent?.toLowerCase().includes(name.toLowerCase())) {
@@ -156,7 +154,7 @@ export async function waitForElement(selector: string, timeout = 5_000): Promise
 
 /** Check if an element exists and is displayed (safe for optional elements) */
 export async function isVisible(selector: string): Promise<boolean> {
-  return browser.execute((sel: string) => {
+  return exec((sel: string) => {
     const el = document.querySelector(sel);
     if (!el) return false;
     const style = getComputedStyle(el);
@@ -166,7 +164,7 @@ export async function isVisible(selector: string): Promise<boolean> {
 
 /** Get the display CSS value for an element (for display-toggle awareness) */
 export async function getDisplay(selector: string): Promise<string> {
-  return browser.execute((sel: string) => {
+  return exec((sel: string) => {
     const el = document.querySelector(sel);
     if (!el) return 'not-found';
     return getComputedStyle(el).display;
@@ -175,8 +173,7 @@ export async function getDisplay(selector: string): Promise<string> {
 
 /** Open notification drawer by clicking bell */
 export async function openNotifications(): Promise<void> {
-  await browser.execute(() => {
-    // Tauri: .bell-btn  |  Electrobun: .notif-btn
+  await exec(() => {
     const btn = document.querySelector('.notif-btn')
       ?? document.querySelector('.bell-btn')
       ?? document.querySelector('[data-testid="notification-bell"]');
@@ -187,8 +184,7 @@ export async function openNotifications(): Promise<void> {
 
 /** Close notification drawer */
 export async function closeNotifications(): Promise<void> {
-  await browser.execute(() => {
-    // Tauri: .notification-center .backdrop  |  Electrobun: .notif-backdrop
+  await exec(() => {
     const backdrop = document.querySelector('.notif-backdrop')
       ?? document.querySelector('.notification-center .backdrop');
     if (backdrop) (backdrop as HTMLElement).click();