Problem

shell.openExternal(url) in shellBridge.ts throws an unhandled promise rejection when called with an invalid URL string. This is reported as ELECTRON-6Z on Sentry with 635 occurrences.

Error: Error: Invalid URL
Culprit: shellBridge.ts:21 — shell.openExternal(url)
Mechanism: auto.node.onunhandledrejection

Root Cause

The openExternal IPC provider passes the URL directly to Electron's shell.openExternal() without validation. When the renderer sends a malformed URL string, shell.openExternal throws TypeError: Invalid URL.

Fix

Add URL validation using new URL(url) before calling shell.openExternal. Invalid URLs are logged via console.warn and the promise resolves gracefully. Applied to both:

• shellBridge.ts (Electron mode)
• shellBridgeStandalone.ts (Node.js standalone mode)