Circuit and starlight

Magic is just science we have not yet encoded.  Seven years ago, Lyra Vance traded moonlight and blood oaths for logic and lines of code. Now a lead engineer at the Neural Systems lab, she believes she has successfully escaped the High Courts of Aethervast-until her servers begin to pulse with a familiar, terrifying violet glow.  When an encrypted file titled return_protocol.fae appears on her desktop, Lyra realizes the walls she built around her heart and her history are crumbling.
Her brother, the Seelie Heir, is lost in a destabilizing Threshold Node, and the only way to save him is to debug the very fabric of reality.  But the Rift isn't just a glitch; it's a conspiracy. To stop it, Lyra must collaborate with the one man she never wanted to see again: Daevrin Stormveil, an Unseelie High Lord with storm-colored eyes and a frustratingly brilliant mind. For two years, he has been building the other half of her bridge from the dark side of the breach.  As ancient magic meets the digital age, Lyra and Daevrin must navigate a world of corrupted hearts and encrypted desires.
In a race against a critical system crash, they will discover that some bonds are deeper than any algorithm and some "errors" are fated to happen.  Step into the Rift. The signal is waiting.