feat: Rename 3d_reconstruction toolset to world_gen

[devin-ai-integration]

Summary

Renames the 3d_reconstruction toolset category to world_gen in the Python SDK to align with the backend naming convention update.

Changes:

• Updated AgentToolset Literal type: "3d_reconstruction" → "world_gen"
• Updated docstring in agent.execute() method to reflect the new category name
• Bumped SDK version to 0.5.4

This is a breaking change for users currently passing toolsets=["3d_reconstruction", ...] - they will need to update to toolsets=["world_gen", ...].

Updates since last revision

• Bumped SDK version from 0.5.3 to 0.5.4 per reviewer feedback

Review & Testing Checklist for Human

• Verify the backend (vlm-lab) has been updated to accept world_gen instead of 3d_reconstruction before merging this PR
• Search the SDK codebase for any other references to 3d_reconstruction that may have been missed
• Test an API call with toolsets=["world_gen"] to confirm the backend accepts the new name

Notes

This is part of a coordinated rename across the VLM platform. Related PRs:

• vlm-lab: Rename in backend types and API models
• docs: Update documentation to use world_gen
• Cookbook: Update notebook examples

Link to Devin run: https://app.devin.ai/sessions/a73e91efc6644456a83528267b200be1
Requested by: dinesh@vlm.run

[devin-ai-integration]

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[dineshreddy91]

update the sdk version