The Stellar Codex. The Archivist's Secret, #1

In the silent, dust-filled archives of the Aetherium Library, archivist Clara stumbles upon a cryptic, centuries-old code hidden in the margins of ancient texts. Her quiet, meticulous world is shattered when she discovers the messages aren't historical anomalies, but a living command structure for a powerful, secretive organization: the Custodians. They are not mere collectors of history; they are the silent keepers of an alien secret, preparing the world for a cosmic "optimization" plan that views humanity as little more than biomass.
Hunted by the Custodians' ruthless enforcers and dismissed by a world in denial, Clara teams up with Aris Thorne, a disgraced astrophysicist who was laughed out of academia for his fringe theories. Their desperate flight for survival leads them from the grimy depths of city sewers to a remote cabin in the woods, as they race against time to decode the truth and expose the conspiracy to a world unwilling to listen.
But the truth is more horrifying than they imagined. The "optimization" is a plan to fundamentally alter Earth's atmosphere, and the clock is ticking down to "Phase Two Protocol." Their only hope lies in a desperate gamble: a race to the heart of the enemy's lair, the Aetherium Library itself, to hijack the alien technology and turn the silent war into a public, global battle for humanity's right to exist.
The Archivist's Secret: The Stellar Codex is a gripping intellectual thriller that blends historical mystery with hard sci-fi, asking: what is the cost of truth in a world addicted to denial, and can humanity, once awakened, survive the silent war that has been waged for centuries?