[Enh] Ensure type closure for primitive func

[sjfeng1999]

Motivation

Technical Details

Test Plan

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[sjfeng1999]

may need update the same aiter kernels simultaneously.

[Copilot]

Pull request overview

This PR updates FlyDSL’s Python expression-layer wrappers to better preserve (“close over”) DSL types (e.g., Numeric, Vector) when calling primitive ops, and adjusts affected tests/kernels to use the new return-value behavior.

Changes:

• Wrap primitive-op scalar results back into Numeric types (and propagate this through helpers like get_scalar, get_leaves, ptr_load, memref_load).
• Centralize memref_load_vec to return a Vector with shape/dtype metadata, and simplify Tensor.load() accordingly.
• Update unit tests and a few kernel utilities to align with the revised scalar/vector return types and pipeline string formatting.

Reviewed changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
tests/unit/test_static_vs_dynamic.py	Adjusts dynamic-layout tests to return i32 scalars directly and simplifies pipeline string formatting.
tests/unit/test_layout_algebra.py	Updates dynamic test functions to return i32 scalars from fx.get_scalar(...).ir_value() and simplifies pipeline string formatting.
python/flydsl/expr/typing.py	Updates IntTuple reconstruction and makes Tensor.load() rely on the updated memref_load_vec wrapper.
python/flydsl/expr/primitive.py	Introduces numeric re-wrapping helper and applies it across several primitive ops; moves vector wrapping into memref_load_vec.
python/flydsl/expr/math.py	Extends traced math-op wrapping to preserve DSL closure for both Numeric and Vector inputs.
kernels/silu_and_mul_fq.py	Simplifies scale-offset computation by relying on the updated fx.get_scalar behavior.
kernels/mfma_preshuffle_pipeline.py	Updates crd2idx helper to unwrap int-tuples and cast to index type using the new scalar typing behavior.
kernels/layout_utils.py	Updates dynamic-layout crd2idx fallback to unwrap/cast through fx.get_scalar(...).ir_value().

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