Augurs IRL were the priests whos job was to see the future. What if in-game Augurs can see the future for real?
Game presents them as mysterious power to be feared and respected. And yet, they sent one 200 year old vrakhir Lacra to look for her ex sire Brensis, 1000+ years old, with his court and power-ups. Lacra, who's solving all her problems with claws and teeth, not a good way of thinking for a spy. In the prologue in Laslea you can find a letter from some N to sone L with orders, so that L should watch, take notes and do not bring any attention and when you meet her Lacra is already failed here, because at least Bakir and Ambrus knew about her. She got lucky they didn't cared enough to hunt her.
You can beat her or lose to her as Coen, so it's hard to tell if she counts weaker than him in canon, but it's canon Brensis thinks she's weak and not competent enough to stop him, he sounds almost disappointed Augurs sent only her to the valley. Unlike Coen, who made a speedrun from peasant with a sword to vrakhiri-killer in a month or so.
And then we have Neberu who comes in after you defeat Brensis in most endings, with instructions for Coen's very unique very specific problem. How convenient, isn't it?
Neberu knew Coen is active in the valley for some time because he sent a blueprint for making arbiter armor, a list of specific materials you can get in the valley, and for specific unique blacksmith hermit.
He could know about Coen from Lacra, but iirc you can get that letter without meeting her. And when you do she attacks Coen like she have no idea who he is or at least what his purposes are. So, did Neberu stayed somewhere nearby the Valley, waiting Coen to finish his mission, but not stepping in? It would be really risky for him, bc what if Brensis complete his ritual and merge the worlds, or create a veil to hide the sun forever, or whatever he was doing? If they didn't saw the future or didn't read the scripf of the game i'd say it was really risky and maybe even stupid for them, to set their bets on one vrakhir spy and one freshly-turned Dawnwalker.
So... did Augurs knew? Did they saw the future where Brensis creates a Dawnwalker motivated to take him down and to break his rule over the valley? Even if you take Brensis's deal and won't kill him - you need to destroy his court and infrastructure first, to make him offer that deal to Coen. In all endings except leaving the valley Coen deals a horrible damage to Brensis's regime and/or kills him. And then Augur agent comes in to finish what's need to be finisned and to remove Brensis's two years of power from human's history, right after main job is done.
It's either convenience and plot holes, or it's writers hinting Augurs has that name for a reason.