quantized duplicated precisions.json, which is authoritative for the
quantized/non-quantized partition. default expressed a per-repository
recommendation nothing consumed: the library resolves its own per-platform
default. Both are gone from the schema.
Declare the pipeline as one multi-component variant
The duration predictor and the synthesizer run together; they were declared as
sibling variants, which forced both to be default: true (xnnpack) or picked one
arbitrarily (coreml). They are now one variant with components, their methods
nested per component. Dynamic dimensions use -1, as the schema specifies and
every other repository already does.
xnnpack/** matched config.json as well as the weights, so the three backend
configs were committed as LFS pointers while the coreml ones next to them are
plain files. Narrowed to xnnpack/**/*.pte.
