Refactor browser profile preferences and experimental settings

src/browser/app/profile/better-fox.js

@@ -158,7 +158,6 @@ pref("browser.shell.checkDefaultBrowser", false);
 pref("browser.newtabpage.activity-stream.asrouter.userprefs.cfr.addons", false);
 pref("browser.newtabpage.activity-stream.asrouter.userprefs.cfr.features", false);
 pref("browser.preferences.moreFromMozilla", false);
-pref("browser.tabs.tabmanager.enabled", false);
 pref("browser.aboutConfig.showWarning", false);
 pref("browser.aboutwelcome.enabled", false);
 

src/browser/app/profile/zen-browser.js

@@ -236,3 +236,8 @@ pref("network.fetchpriority.enabled", true);
 
 // No Proxy should be default, Use system proxy allows antivirus, virus or system proxy to MITM or slowing down Zen
 pref("network.proxy.type", 0);
+
+// ZEN EXPERIMENTAL:
+
+pref("security.tls.enable_kyber", true);
+pref("network.http.http3.enable_kyber", true);