Set Default Broad Phase to LBVH

[zfergus]

Description

Set the default broad phase to LBVH.

As shown in #188, the LBVH outperforms all other methods on a variety of scenes.

Type of change

Please delete options that are not relevant.

• Enhancement (non-breaking change which improves existing functionality)

[Copilot]

Pull request overview

This PR updates IPC Toolkit’s default broad-phase collision detection implementation to use LBVH (as introduced in #188) and aligns the getting-started tutorial text with the new default.

Changes:

• Switch make_default_broad_phase() to construct LBVH instead of HashGrid.
• Update the getting-started tutorial to state that the default broad phase is now LBVH.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
src/ipc/broad_phase/default_broad_phase.hpp	Changes the default broad-phase factory to return LBVH.
docs/source/tutorials/getting_started.rst	Updates the tutorial’s broad-phase list to reflect LBVH as the default.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.96%. Comparing base (82e3ccf) to head (b2dd0f2).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #212   +/-   ##
=======================================
  Coverage   96.95%   96.96%           
=======================================
  Files         159      159           
  Lines       24666    24666           
  Branches      882      883    +1     
=======================================
+ Hits        23916    23917    +1     
+ Misses        750      749    -1     

Flag	Coverage Δ
unittests	96.96% <100.00%> (+<0.01%)	⬆️

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