🛡️ Sentinel: [CRITICAL] Fix XSS vulnerability in ShiftScreen.tsx

[TargetMisser]

🚨 Severity: CRITICAL
💡 Vulnerability: The ShiftScreen.tsx component previously injected a dynamic base64 JSON string directly into a JavaScript template literal executed by a WebView (injectJavaScript). It attempted to mitigate issues via manual single quote replacement (.replace(/'/g, "\\'")), which is unreliable and vulnerable to XSS and syntax corruption via unhandled backslashes or line endings.
🎯 Impact: Attackers or malformed inputs could execute arbitrary JavaScript within the context of the WebView.
🔧 Fix: Wrapped the data in JSON.stringify(base64Json) when passing it to the JavaScript string literal. This leverages native encoding to safely escape all characters and completely neutralizes injection risks.
✅ Verification: Ran npm run typecheck and verified syntax changes in src/screens/ShiftScreen.tsx (the solution aligns precisely with prior fixes on HomeScreen.tsx).

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PR created automatically by Jules for task 15818564123666207320 started by @TargetMisser

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Project	Deployment	Actions	Updated (UTC)
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[Copilot]

Pull request overview

Fixes an XSS vector in ShiftScreen.tsx where untrusted/dynamic content was interpolated into JavaScript executed via WebView.injectJavaScript.

Changes:

• Removes manual single-quote escaping on the JSON payload.
• Passes the payload into injected JS using JSON.stringify(...) so it is encoded as a safe JS string literal.

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