chore: add consistent mise.toml, justfile, and tooling config

pyproject.toml

@@ -20,6 +20,9 @@ dependencies = [
 meshcore = ["pycryptodome", "pynacl"]
 orac = ["pycryptodome", "pynacl", "anthropic"]
 
+[dependency-groups]
+dev = ["ruff"]
+
 [build-system]
 requires = ["hatchling"]
 build-backend = "hatchling.build"