Harden Windows DLP enforcement and Electron runtime packaging

scripts/semantic-browser-smoke.cjs

@@ -1,6 +1,6 @@
 // Finite native fixture: synthetic teaching data, real signed policy and CPU model.
 const {app,BrowserWindow,clipboard,ClipboardItem}=require('electron');
-const fs=require('node:fs'),path=require('node:path'),assert=require('node:assert/strict');
+const assert=require('node:assert/strict');
 app.setPath('userData',process.env.SAFETYNET_SEMANTIC_PROFILE);
 app.setPath('sessionData',process.env.SAFETYNET_SEMANTIC_PROFILE);
 app.disableHardwareAcceleration();