Fix LEAPP documentation references and quick start

[kellyguo11]

Description

Fix two LEAPP documentation issues identified while reviewing #7541:

• Expose LeappDeploymentEnv from the public isaaclab.envs lazy-export stub, document it under that namespace, and add the missing module context to the deployment guide so its class references resolve.
• Make the quick-start export and deployment commands consistently use Newton MJWarp with the NewtonGL visualizer, matching the documented leapp-only prerequisites.

Type of change

• Bug fix (non-breaking change which fixes an issue)
• Documentation update

Release backport

• Backport this pull request to the active release branch after it merges into develop

Screenshots

Not applicable.

Validation

• Verified the lazy-export stub exposes LeappDeploymentEnv through both __all__ and dir().
• Focused pre-commit checks passed for all changed files, including the changelog and Git LFS gates.
• sphinx-lint reported no problems for the changed documentation.
• The full warning-as-error documentation build is pending Linux CI because the repository lockfile does not support the local macOS/arm64 platform.

Checklist

• I have read and understood the contribution guidelines
• I have run the applicable pre-commit checks
• I have made corresponding changes to the documentation
• My changes generate no new warnings (full build pending Linux CI)
• I have added tests that prove my fix is effective or that my feature works (covered by focused lazy-export contract validation)
• I have added a changelog fragment under source/<pkg>/changelog.d/ for every touched package
• I have added my name to the CONTRIBUTORS.md or my name already exists there

[isaaclab-review-bot]

Isaac Lab Review Bot

The documentation update retargets LEAPP deployment environment references to the public isaaclab.envs namespace and makes the quick-start export and deployment commands consistently use Newton MJWarp with NewtonGL.

• Design and architecture: Using the public isaaclab.envs namespace keeps the documented class path aligned with the intended user-facing API rather than exposing its implementation module. The deployment guide’s new isaaclab module context is consistent with its relative envs.LeappDeploymentEnv reference.
• API: No Python API or CLI contract is changed. The documented physics=newton_mjwarp and --viz newton_gl selectors align the quick start with the existing Newton deployment example and its leapp-only prerequisite.
• Implementation: The two Sphinx reference forms and the quick-start producer/deployment commands were traced across the changed pages and are internally consistent. The remaining validation risk is whether the public export resolves during the pending warning-as-error documentation build.

No blocking issues. No inline issue met the actionable-evidence threshold; the assessment above records the review feedback.

Automated review; human maintainers own approval decisions.

[greptile-apps]

Greptile Summary

The PR updates LEAPP API references and changes the quick start to use Newton MJWarp with NewtonGL.

• Moves LeappDeploymentEnv documentation references toward the intended public namespace.
• Adds module context to the deployment guide.
• Aligns export and deployment commands on the Newton MJWarp backend and NewtonGL visualizer.

Confidence Score: 4/5

The PR should not merge until LeappDeploymentEnv is actually exported from isaaclab.envs or the documentation references its defining module.

Both changed class references resolve to isaaclab.envs.LeappDeploymentEnv, but the lazy-export stub does not expose that symbol, leaving the intended Sphinx references unresolved.

Files Needing Attention: docs/source/api/lab/isaaclab.envs.leapp_deployment_env.rst; docs/source/policy_deployment/05_leapp/deploying_exported_policies_with_leapp.rst

Important Files Changed

Filename	Overview
docs/source/api/lab/isaaclab.envs.leapp_deployment_env.rst	Changes autoclass resolution to a package namespace that does not currently export LeappDeploymentEnv.
docs/source/policy_deployment/05_leapp/deploying_exported_policies_with_leapp.rst	Adds module context, but the resulting class target resolves through the same absent package-level export.
docs/source/policy_deployment/05_leapp/exporting_policies_with_leapp.rst	Consistently documents supported Newton MJWarp and NewtonGL command arguments.

_{Reviews (1): Last reviewed commit: "Fix LEAPP documentation references and q..." | Re-trigger Greptile}

[kellyguo11]

run-ci