[Refact] Rename JitArgument & DslType interfaces, support SimpleNamespace as DslType

[sjfeng1999]

…pace as DslType

Motivation

Technical Details

Test Plan

Test Result

Submission Checklist

• Look over the contributing guidelines at https://github.com/ROCm/ROCm/blob/develop/CONTRIBUTING.md#pull-requests.

[Copilot]

Pull request overview

This PR refactors FlyDSL’s Python-side type/argument protocols by renaming the __fly_* dunder methods and the fly_* helper functions, and extends the protocol layer to treat types.SimpleNamespace as a composite DSL value (flattening/reconstruction of IR values/types/pointers).

Changes:

• Renames DslType/JitArgument protocol methods to __extract_to_ir_values__ / __construct_from_ir_values__ and __get_ir_types__ / __get_c_pointers__, and updates core compiler call sites accordingly.
• Adds SimpleNamespace support in compiler/protocol.py for flattening (get_ir_types, get_c_pointers, extract_to_ir_values) and reconstruction (construct_from_ir_values).
• Updates/introduces tests and documentation to reflect the renamed protocol surface and validates SimpleNamespace built inside @flyc.jit.

Reviewed changes

Copilot reviewed 15 out of 15 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
tests/unit/test_vector.py	Updates protocol roundtrip test to new __extract_to_ir_values__ / __construct_from_ir_values__ names.
tests/unit/test_simple_namespace.py	Adds a GPU test validating SimpleNamespace created inside @flyc.jit can be passed to a kernel.
tests/kernels/test_flydsl_shmem.py	Updates helper unwrapping to use __extract_to_ir_values__.
python/flydsl/expr/typing.py	Renames DslType-related dunder methods on IR wrapper types; removes old construct hook.
python/flydsl/expr/numeric.py	Renames protocol methods for Numeric types and updates wrapping/unwrapping helpers; adds log_width.
python/flydsl/expr/meta.py	Updates primitive arg unwrapping to the new extraction dunder.
python/flydsl/expr/extern.py	Updates FFI argument unwrapping to the new extraction dunder.
python/flydsl/compiler/protocol.py	Introduces new helper names and adds SimpleNamespace flatten/rebuild support.
python/flydsl/compiler/kernel_function.py	Switches kernel emission/launch plumbing to the renamed protocol helpers.
python/flydsl/compiler/jit_function.py	Switches JIT argument typing/caching and DSL arg reconstruction to renamed protocol helpers.
python/flydsl/compiler/jit_executor.py	Switches runtime pointer extraction helper; minor error message formatting cleanup.
python/flydsl/compiler/jit_argument.py	Updates protocol detection to new dunder names; minor formatting/quoting tweaks.
docs/layout_system_guide.md	Updates documentation references to the renamed extraction dunder.
docs/kernel_authoring_guide.md	Updates custom adaptor documentation to the renamed JitArgument dunders.
docs/architecture_guide.md	Updates protocol/API references and file map entry to the new names.

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