feat(desktop): add standalone Playwright screenshot helper#795
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The desktop app requires the E2E mock bridge (`window.__SPROUT_E2E__`) injected via `addInitScript` before page scripts run. This makes the Playwright MCP browser unusable for ad-hoc testing since it can only evaluate JS after page load. Standalone scripts using the Playwright API can use `addInitScript`, so this helper wraps the mock bridge setup from `bridge.ts` into a CLI-driven screenshot tool. Accepts --name, --route, --click, --wait, --viewport, and --outdir flags. Bare --click values auto-expand to data-testid selectors.
Future agent sessions need to know about the screenshot helper and why the Playwright MCP browser can't drive the desktop app directly.
wesbillman
approved these changes
May 29, 2026
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Adds
desktop/tests/helpers/screenshot.mjs, a CLI-driven headless Chromium script for capturing screenshots of the desktop app UI with the E2E mock bridge pre-injected.The desktop app requires
window.__SPROUT_E2E__to be injected before any page scripts run (viaaddInitScript) to mock the Tauri IPC layer. The Playwright MCP browser can only evaluate JS after page load, so it can't drive the app directly. This script wraps the same mock bridge setup frombridge.tsinto a standalone tool that agents and developers can invoke without writing boilerplate each time.installMockBridgesetup: workspace seeding, onboarding flags,__SPROUT_E2E__config, andMockNotificationmock--name,--route,--click,--wait,--viewport, and--outdirflags--clickaccepts baredata-testidvalues (e.g.open-search) or full CSS selectorstest-results/screenshots/(already gitignored) and prints the path to stdoutAGENTS.mdso future agent sessions can discover and use it