The atmosphere of your game is wonderful, it really pulls you in! The visual style is exactly the kind of project I had in mind while building my tool, PolishSprite.
It's a shader-based tool that lets you quickly animate static sprites without coding or drawing. You can easily create effects like trees swaying in the wind, flickering torches, or flowing water by cloning a sprite and applying a shader effect.
I'm looking to collaborate with developers to help bring their environments to life. If that sounds interesting, feel free to reach out! Best of luck with your project!