In the Age of Lost Omens the country of Lastwall does still, kind of, have the infrastructural capability to respond to Prophetic Bullshit. It gets a lot fewer resources allocated to it, nearly zero of them in fact, because wow do they ever not have resources to spend on anything, but you do sometimes get clerics of Desna and occasionally Nefreti Clepati turning up with dire warnings and so on just often enough that you don't completely turn off that institutional response even though it gets triggered pretty rarely.
Wrin's letter filters its way through various security procedures, shepherded by a note from her paladin friend that says he's reasonably sure she's legit, and eventually it turns into orders.
No one is going to tell Samora, a teenage first-circle cleric newly graduated from seminary, that there might be Prophecy Shit. The institutional response policy says that you don't do that because usually if you tell a baby adventurer that they got Prophecied About, either they get really cocky and die instantly or they get one million anxiety and die instantly, neither of which is a desirable outcome.
They're just going to tell her that she's been assigned Adventurer by Triage Resource Allocation. Which, to be clear, does happen all the time for perfectly normal reasons! Lastwall does care about things other than Tar-Baphon containment and the Worldwound, and there are a lot of problems on the continent. Many problems have a hazard rating of "well, it's not the literal end of the world if this problem doesn't get solved and we don't have the slack to assign someone who will definitely manage it, but it would produce sapient flourishing if it were fixed", and that is where you send people you think will do well as independent adventurers (i.e., either too temperamentally Chaotic to do well in the army but competent to do Good elsewhere, or, as in Samora's case, sufficiently Wise that they're competent to make reliably Lawful Good decisions without a CO in shouting distance), since trying to fix things you aren't strong enough to definitely handle and might die of is a great way to get more circles and Lastwall could always, desperately, continuously, use more people with more circles.
Samora is advised that:
1) Since being an independent adventurer is not formally part of a military or civil service command structure, they are, legally speaking, giving her advice for what to do. Almost nobody takes this assignment straight out of seminary/war college/wizard academy and goes and does some random other thing on purpose, obviously, because this is Lastwall, but if she gets, like, sidetracked by an emergency on her way there or something, that's fine, that's a normal thing that happens to adventurers, don't panic about failing to meet your legal obligations that you do not in fact have, etc.
2) She's welcome to join the military on purpose later, obviously, she's not banned from doing that or anything, but the considered recommendation of the resources allocation people is that she come back in, oh, say, five years, by which time if she's still alive she'll probably have hit third or maybe even fourth circle, faster than she'd get them at the worldwound on average.
3) That said, and again this is not an order (it is really important to them that the people of Lastwall in general understand that instructions from military command are only orders if you are actually in the army because otherwise the concept of a civilian is a fiction and that's bad), they would appreciate if she'd grab the outgoing Vigil-Absalom snail mail, hop a caravan south, and meet up with the astrologer in Otari (they'll show her where it is on this nice map of the Isle of Kortos). Apparently Sivinxi has some kind of Cursed Lighthouse Situation and some other baby adventurers who are in need of a cleric? Good luck, godspeed, here's how to address mail through the church in Absalom if you need to write for advice in future, try not to die.
