Hey, love that mod . Did you thought about adding ore smelting? That would be lovely for reclaiming old fortresses, and then using ore from them to make your own armor and weapons . If it doesn't sounds good for you, could I ask for help how to add it by myself? I searched raws and I don't see any reaction for smelting ore. Is adding a reaction for each type of ore requiring that ore, logs, forge and creating bars would work?
I've considered it, but it can be pretty rare in use for most players unless you deliberately set it up in fort mode. Even the existing reaction to break a boulder apart into small rocks is likewise little more than a footnote, and in practice the "break down any stone item" reaction is useful more often, even if it doesn't yield stone 100% of the time. Making alloys from bars would be useful in more circumstances, but giving the player the ability to make steel by scavenging iron goods would be hilariously broken. Conversely, tin goods are such a crapshoot to find that bronzemaking would be quite underused regardless of whether it uses ores or bars.
However, if you want to take a stab at it, reaction_smelter is the file where the raw-defined alloy reactions are found, and you can convert them into non-workshop versions without too much insanity. Some things to keep in mind though:
1. Adventurecraft relies on producing and using single units of "bar" when fort-mode metalworking operate on the assumption that a bar is 150 units. This is due to some giant pain-in-the-ass reaction bugs that crop up in adventure mode.
2. I don't know if the stuff like [REAGENT:A:1:METAL_ORE:ZINC] plays well with adventure mode reactions. My preferred handling is to exploit REACTION_CLASS and/or HAS_MATERIAL_REACTION_PRODUCT, because that avoids some other things that I've seen crop up with ANY_BONE_MATERIAL and related stuff.