developer_vector_direct: the bias wrangle keeps its biased direction

It lerped the direction toward the bias into new_dir and then weighted
and stored the original direction, so the Bias parms never reached the
average. The scalar weight now applies to the biased direction.

Co-Authored-By: Claude Fable 5.1 <[email protected]>

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 1 file changed, 0 insertions(+), 0 deletions(-)

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