Heretic of The Seventh Circle
Oh, so it replaces the tool and “make stuff” base class features with story-first arcane warrior features?Is it homebrew if it's in an Eberron book designed by the creator of Eberron?
Exploring Eberron might not be directly WotC published, but it's about a canon as an Eberron book can be. WotC aren't writing more Eberrron books because they know that Keith is going to keep publishing award-winning bestsellers set in his world through DMs Guild.
In any case, Forge Adept is exactly what you're asking for of a runic arcane half-caster warrior artificer without a battle pet. No need to make a new class.