Shadowfax updates

[uhbrar]

Adds new predicates for shadowfax. Also changes to using a direct MLP scorer instead of a two stage scorer.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 4 lines in your changes missing coverage. Please review.
✅ Project coverage is 52.85%. Comparing base (6fbd183) to head (29303de).
⚠️ Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
workers/score_paths/worker.py	0.00%	4 Missing ⚠️

Files with missing lines	Coverage Δ
workers/aragorn_pathfinder/worker.py	63.06% <ø> (ø)
workers/score_paths/worker.py	0.00% <0.00%> (ø)

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