Universal Governor Suite

Unified browser & script governor with media optimization, idle-aware scheduling, and network spike control for improved stability across dynamic web apps.
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// ==UserScript==
// @name         Universal Governor Suite
// @namespace    ultralean.universal.browser.script.governor
// @version      2.4.3
// @description  Unified browser & script governor with media optimization, idle-aware scheduling, and network spike control for improved stability across dynamic web apps.
// @author       Michael Stutesman
// @match        *://*/*
// @run-at       document-start
// @grant        GM_getValue
// @grant        GM_setValue
// @grant        GM_registerMenuCommand
// @grant        GM_addStyle
// @license      MIT
// ==/UserScript==

(() => {
'use strict';

if (window.__UGS__) return;
window.__UGS__ = 1;

/* =========================================================
   🧿 PHANTOM-STYLE SITE EXCLUSIONS (FULL SYSTEM)
========================================================= */

const HOST = location.hostname.toLowerCase();
const EXCLUSION_KEY = "ugb_excluded_sites";

/* load list safely */
const excluded = GM_getValue(EXCLUSION_KEY, []) || [];

/* HARD EXIT (must run BEFORE anything else) */
if (excluded.includes(HOST)) return;

/* ---------------- MENU COMMANDS ---------------- */

GM_registerMenuCommand("🚫 Exclude this site (UGS)", () => {
    const list = GM_getValue(EXCLUSION_KEY, []) || [];

    if (!list.includes(HOST)) {
        list.push(HOST);
        GM_setValue(EXCLUSION_KEY, list);
    }

    location.reload();
});

GM_registerMenuCommand("✅ Re-enable this site (UGS)", () => {
    let list = GM_getValue(EXCLUSION_KEY, []) || [];
    list = list.filter(x => x !== HOST);

    GM_setValue(EXCLUSION_KEY, list);
    location.reload();
});

GM_registerMenuCommand("🧹 Clear all exclusions (UGS)", () => {
    GM_setValue(EXCLUSION_KEY, []);
    location.reload();
});

/* =========================================================
   🧠 CORE STATE (single source of truth)
========================================================= */

const U = {
H: HOST,
K: EXCLUSION_KEY,

S: { d:new Set(), q:[], r:[], e:[], h:0, a:0 },

L: Date.now(),
I: 0,

C: { m:7, b:14, bd:9, base:1, heavy:30000, idle:700 },

/* =========================================================
   🚫 INIT + EXCLUSIONS + CSS
========================================================= */

init(){

/* 🎨 visual simplifier */
GM_addStyle(`
*{
backdrop-filter:none!important;
-webkit-backdrop-filter:none!important;
filter:none!important;
box-shadow:none!important;
text-shadow:none!important
}
video,canvas,img{
transform:translateZ(0);
will-change:transform,opacity
}
img{content-visibility:auto}
`);

/* 🌙 activity signals */
onmousemove=onscroll=onkeydown=()=>{this.L=Date.now();this.I=1};
document.addEventListener("visibilitychange",()=>{this.L=Date.now();this.I=1});

/* =========================================================
   🌐 NETWORK LAYER
========================================================= */

const E = f => new Promise((r,e)=>{
this.S.q.push(f);
this.S.r.push(r);
this.S.e.push(e);
});

fetch = ((fn)=>(...a)=>E(()=>fn(...a)))(fetch);

const o = XMLHttpRequest.prototype.open,
      s = XMLHttpRequest.prototype.send;

XMLHttpRequest.prototype.open=function(...a){
this.__u=a[1];
return o.apply(this,a);
};

XMLHttpRequest.prototype.send=function(...a){
const x=this;
return E(()=>new Promise((r,e)=>{
x.onload=()=>r(x);
x.onerror=()=>e(x);
s.apply(x,a);
}));
};

/* =========================================================
   🎥 MEDIA LAYER
========================================================= */

const PRECONNECT_CACHE = new Set();

this.v = (v) => {
if(!v || v.__t) return;
v.__t = 1;

try { v.load?.(); } catch {}

v.setAttribute("decoding", "async");
v.preload = (v.muted || v.hasAttribute("autoplay")) ? "auto" : "metadata";
v.playsInline = true;

v.style.contentVisibility = "auto";
v.style.containIntrinsicSize = "480px 270px";
v.style.backgroundColor = "#000";

if(!v.hasAttribute("poster")){
v.poster = "data:image/gif;base64,R0lGODlhAQABAAAAACw=";
}

v.disablePictureInPicture = false;
v.disableRemotePlayback = false;

if("fetchPriority" in v){
v.fetchPriority = v.hasAttribute("autoplay") ? "high" : "low";
}

try{
const src = v.currentSrc || v.src;
if(src){
const url = new URL(src);
if(!PRECONNECT_CACHE.has(url.origin)){
PRECONNECT_CACHE.add(url.origin);
const l = document.createElement("link");
l.rel = "preconnect";
l.href = url.origin;
document.head.appendChild(l);
}
}
}catch{}

if(!v.__p){
v.__p = 1;
queueMicrotask(() => {
try { v.load?.(); } catch {}
});
}

if(!v.__o){
v.__o = 1;
this.O.observe(v);
}
};

/* =========================================================
   🌱 DOM PROCESSOR
========================================================= */

this.d = (n) => {
if(!n || n.nodeType!==1) return;
if(n.tagName==="VIDEO") return this.v(n);

const v = n.getElementsByTagName?.("video");
if(v) for(let i=0;i<v.length;i++) this.v(v[i]);
};

/* =========================================================
   👁 INTERSECTION OBSERVER
========================================================= */

this.O = new IntersectionObserver(e=>{
for(const x of e){
const v = x.target;

if(v.tagName==="VIDEO"){
v.dataset.visible = x.isIntersecting ? 1 : 0;

if(x.isIntersecting){
try{ v.load?.(); }catch{}
}

this.L = Date.now();
this.I = 1;
}
}
},{rootMargin:"300px"});

/* =========================================================
   🧠 HEARTBEAT ENGINE
========================================================= */

this.tick = () => {

let p = this.S.q.length - this.S.h,
    d = this.C.base;

if(p >= this.C.b) d += this.C.bd;
if(this.I) this.I = 0;

if(Date.now() - this.L > this.C.heavy) this.I = 0;

if(this.S.d.size){
for(const n of this.S.d) this.d(n);
this.S.d.clear();
}

if(this.S.a < this.C.m && this.S.h < this.S.q.length){
this.S.a++;
const i = this.S.h++;

setTimeout(()=>{
this.S.q[i]().then(this.S.r[i], this.S.e[i]);
this.S.a--;
}, d);
}

setTimeout(()=>this.tick(), this.I ? 80 : this.C.idle);
};

/* =========================================================
   🚀 STARTUP
========================================================= */

document.querySelectorAll("video").forEach(v=>this.v(v));

this.tick();

}
};

/* =========================================================
   🌱 MUTATION OBSERVER
========================================================= */

new MutationObserver(m=>{
for(const x of m)
for(const n of x.addedNodes)
if(n?.nodeType===1){
U.S.d.add(n);
U.L = Date.now();
U.I = 1;
}
}).observe(document.documentElement,{
childList:1,
subtree:1
});

/* =========================================================
   🚀 BOOT
========================================================= */

U.init();

})();