Remove torch from main dependencies and uv workspace config

- Move torch to optional dependencies only (under rewardfns)
- Remove uv.workspace configuration
- Reduces install size and CI time significantly

pyproject.toml

@@ -26,7 +26,6 @@ dependencies = [
     "jsonlines",
     "pydantic-cli",
     "hf_transfer",
-    "torch>=2.7.0",
 ]
 
 [project.scripts]
@@ -66,8 +65,3 @@ build-backend = "hatchling.build"
 
 [tool.hatch.build.targets.wheel]
 packages = ["atroposlib"]
-
-[tool.uv.workspace]
-members = [
-    "environments/hack0",
-]