Insomniac: Mac ko lid band rakhte hue jagaye rakho, bina garam kiye

Problem

Main chahta tha ki mera Mac lid band rakhte hue bhi chalta rahe. Dim nahi: asal mein kaam karta hua, raatbhar ek AI agent, ek Xcode archive, ek lamba sync, lid band, koi external monitor nahi. macOS ise clamshell sleep kehta hai, aur use parwah nahi ki aapka kaam beech mein hai.

Pech mechanism mein hai. Popular keep-awake tools IOKit power assertions use karte hain, aur wo clamshell sleep ko tab tak nahi rokte jab tak aapke paas ek external display, power, aur ek keyboard na juda ho, thik wahi setup jisse main bachna chahta tha. Iklauta lever jo bina kuch jode kaam karta hai, wo ek privileged command hai: pmset disablesleep. To poora product asal mein ek hi cheez hai, ek khatarnak system setting ke ird-gird ek safe wrapper, aur baaki sab kuch us ek lever ko safe aur sukhad tarike se kheenchne layak banane ke liye hai.

Decisions

Safety feature hai, jage rehna nahi. Ek generic paid keep-awake app shuru mein hi mara hua hai: Amphetamine aur caffeinate pehle se muft mein ye karte hain. Bina serve kiya gaya angle tha garmi. Band lid airflow ko ghonta hai, aur koi maujooda tool iske baare mein ek shabd nahi kehta. To Insomniac “jage raho” nahi hai, ye “machine ko garam kiye bina jage raho” hai.

macOS jo imaandari se expose karta hai use maapo, nakli degrees nahi. Lubhawna version ek CPU temperature padhta hai aur degrees mein ek countdown dikhata hai. Par Apple Silicon die temperature padhne ka koi supported tarika expose nahi karta; jo kuch bhi aisa dawa karta hai wo private keys padh raha hai jo models ke beech tootti hain. To maine ProcessInfo.thermalState (nominal, fair, serious, critical) par banaya, jise koi admin nahi chahiye aur jo hamesha ke liye supported hai. Aur asli suraksha ek upfront prediction hai hi nahi: ye ek live thermal cutoff hai jo lid band rehte hue state par nazar rakhti hai aur agar ye badhe to session auto-stop kar deti hai. Ek prediction galat ho sakta hai; ek live cutoff ground truth hai.

Ek architecture jahan khatarnak hissa swappable hai. pmset ko root ki tarah chalane ke do raste hain: ek AppleScript prompt jo har toggle par password maangta hai (maamuli, pehle din kaam karta hai) aur XPC par ek privileged helper jo chupke se toggle karta hai (production-grade, signing aur ek pinned contract ki zaroorat). App ko kisi ek se jodne ke bajaye, maine dono ko ek PowerControlling protocol ke peeche chhipaya. Maine pehle din password-prompt version ship kiya aur baad mein silent helper bina kisi caller badlaav ke joda. Helper locked down hai: ek root daemon ki tarah ye sirf un XPC connections ko accept karta hai jo is app ke identifier aur Team ID se pinned hon.

Safety invariants code dwara laagu kiye jaate hain. Ek keep-awake app mein ek vinaashkari failure hai: kaam khatam hone ke baad sleep ko disabled chhod dena. Maine “sleep ko kabhi disabled na chhodo” ko ek invariant maana aur har exit band kiya. Toggle off, auto-off, thermal cutoff, aur battery cutoff sab sleep restore karte hain. Quit aur logout termination ko tab tak taalte hain jab tak restore poora na ho; app sleep disabled rehte hue marne se inkaar karta hai. Ek hard crash intercept nahi kiya ja sakta, to agle launch par app bina kisi active session ke sleep disabled paata hai aur ise reset karne ki peshkash karta hai. Koi “indefinite” bhi nahi hai: sabse lamba session ek sakht 8-ghante ki seema hai, kyunki “forever” thik wahi setting hai jo ek mara hua, garam laptop bag mein chhod deti hai.

Imaandar UI, imaandar privacy. App sirf menu-bar hai. Advisory ek risk level (low, moderate, high) aur ek saada message dikhati hai, kabhi wo degrees nahi jinhe main imaandari se nahi padh sakta, aur weather nudge soch-samajhkar sabse kamzor input hai: ek garam kamra risk badha sakta hai, par ek thanda kamra ek garam hote CPU ko kabhi safe nahi bana sakta. Weather location IP geolocation se aati hai, city-level, to koi GPS permission prompt nahi; weather band karo aur app kuch nahi bhejta. Koi telemetry nahi, koi analytics nahi.

Wo bug jo mujhe sirf iske saath jeekar mila. V1 ne Mac ko jagaye rakha, par screen lid band rehte hue jalti rahi, kyunki sleep disable karna macOS ko internal display band karne se bhi rokta hai. Keyboard ke khilaf jalta ek backlight barbaad battery aur garmi hai, thik wahi cheez jisse app bachata hai. Maine ek lid monitor joda jo open-se-closed edge par fire hota hai aur display ko ek harmless user-level command se sleep karata hai, privileged helper se soch-samajhkar alag rakha gaya. Jis cheez ko iski zaroorat nahi, uske liye least privilege.

Abhi ship karo, rough edge ko apnao. Core feature ko App Sandbox off chahiye, jo Mac App Store ko bahar kar deta hai, to maine ek direct download ship kiya. Pehle Apple ki paperwork par din bitane ke bajaye, maine abhi ek un-notarized build ship kiya aur natijatan aane wali Gatekeeper warning ko ek guided, ek-minute ka step banaya: installer ek haath se banayi setup guide hai, quarantine-clearing command app ke thik bagal mein ek copy karne layak file ki tarah hai, aur app har launch par apna quarantine flag hata deta hai taaki warning kabhi wapas na aaye. Packaging script ek certificate maujood hote hi ek command se re-sign aur notarize kar deti hai.

Outcome

Insomniac live hai: ek menu-bar app jo Mac ko lid-band jagaye rakhta hai, ek live thermal cutoff, ek battery cutoff, crash recovery, aur ek signed helper ke zariye silent toggling ke saath. Poori cheez do niyamon par tiki hai: imaandar raho (asli mechanism, nakli degrees ke bajaye risk levels, ek kamzor signal ko kamzor rakha) aur rough edges ko chhipane ke bajaye apnate hue tezi se ship karo. Ek keep-awake app ek chhoti cheez hai, par ye ek aisi setting ko chhuta hai jo hardware ko nuksaan pahuncha sakti hai, to har shortcut jo demo ko zyada chamkdaar banata, wo product ko kam bharosemand banata.