otls: fix the VEX in four developer nodes that failed to compile

- developer_float_migrate: the proximity wrangle read point(0, fval, ...)
  where fval was never declared; it now reads float_attr.
- developer_vector_direct: vec_attr was declared vector but assigned from
  chs(); it is a string.
- developer_vector_from_scalar: the neighbour position was fetched into
  nearPP and then the loop subtracted an undeclared P.
- developer_attribute_composite: the composite wrangle was a half-finished
  rewrite against a parameter set that no longer exists (attr_/op/weight,
  op_start, input). Rewritten for the current interface: output_attr,
  operation (set/add/subtract/multiply) and the in_attr_#/weight_#
  multiparm. The in_attr_# menu script also referenced a missing input#
  parameter; it now lists input 0's attributes.

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

 ...sgalante.developer_attribute_composite.1.0.hdalc | Bin 17866 -> 17550 bytes
 .../sop_lsgalante.developer_float_migrate.1.1.hdalc | Bin 13436 -> 13289 bytes
 .../sop_lsgalante.developer_vector_direct.1.0.hdalc | Bin 14363 -> 13633 bytes
 ...lsgalante.developer_vector_from_scalar.1.0.hdalc | Bin 11243 -> 10706 bytes
 4 files changed, 0 insertions(+), 0 deletions(-)

diff --git a/otls/sop_lsgalante.developer_attribute_composite.1.0.hdalc b/otls/sop_lsgalante.developer_attribute_composite.1.0.hdalc
index 3bab918..ef71a9b 100644
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diff --git a/otls/sop_lsgalante.developer_float_migrate.1.1.hdalc b/otls/sop_lsgalante.developer_float_migrate.1.1.hdalc
index 7a56589..6790ce3 100644
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diff --git a/otls/sop_lsgalante.developer_vector_direct.1.0.hdalc b/otls/sop_lsgalante.developer_vector_direct.1.0.hdalc
index 9372fac..92bfbbb 100644
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diff --git a/otls/sop_lsgalante.developer_vector_from_scalar.1.0.hdalc b/otls/sop_lsgalante.developer_vector_from_scalar.1.0.hdalc
index 60ba33e..418a74a 100755
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