fix: scope InfiniRT public install headers

[voltjia]

Summary

• Generate InfiniRT public detail headers under infini/rt/detail/....
• Make generated public wrappers include only infini/rt/... paths instead of root-level short headers.
• Stop installing src/*.h, src/common, and src/native into the install include root.

Motivation

InfiniOps consumes InfiniRT from the same install prefix. InfiniRT previously installed root-level headers such as device.h, runtime.h, data_type.h, and hash.h, which could collide with InfiniOps legacy public headers and break installed consumers of <infini/rt.h>.

No linked issue.

Type of Change

• fix – Bug fix (non-breaking change that fixes an issue)
• feat – New feature (non-breaking change that adds functionality)
• breaking – Breaking change (fix or feature that would cause existing functionality to not work as expected)
• docs – Documentation update
• build / ci – Build system or CI changes
• perf – Performance improvement
• test – Test-only changes
• refactor – Code refactoring without behavior change
• chore – Maintenance / cleanup

Platforms Affected

• CPU (WITH_CPU)
• NVIDIA (WITH_NVIDIA)
• Iluvatar (WITH_ILUVATAR)
• MetaX (WITH_METAX)
• Cambricon (WITH_CAMBRICON)
• Moore Threads (WITH_MOORE)
• Ascend (WITH_ASCEND)
• Build system / CMake / CI
• Python bindings / user-facing API
• Documentation only

Smoke Test Result

InfiniRT CPU:

cmake -S . -B build-cpu -DWITH_CPU=ON -DINFINI_RT_BUILD_TESTING=ON -DCMAKE_BUILD_TYPE=Release
cmake --build build-cpu -j2
ctest --test-dir build-cpu --output-on-failure

Result: passed, 6/6 tests.

Install header boundary:

cmake --install build-cpu --prefix /work/infinirt-install-cpu

Result: verified the install prefix has no root-level InfiniRT data_type.h, device.h, runtime.h, or hash.h; install consumer including only <infini/rt.h> passed.

InfiniRT NVIDIA:

cmake -S . -B build-nvidia -DWITH_NVIDIA=ON -DCMAKE_BUILD_TYPE=Release
cmake --build build-nvidia -j2

Result: build passed.

Python formatting:

ruff check scripts/generate_public_headers.py
ruff format --check scripts/generate_public_headers.py

Result: passed.

C++ formatting: not run because clang-format / versioned clang-format-* is not installed in the available local or remote images.

Test Results on Supported Platforms

Platform	Affected	Result	Notes
NVIDIA	Yes	Build passed	Runtime smoke not run; validation was compile/install-header focused.
Iluvatar	Yes	Not run	Generated public wrapper include paths are affected; platform validation can follow separately.
MetaX	Yes	Not run	Generated public wrapper include paths are affected; platform validation can follow separately.
Cambricon	Yes	Not run	Generated public wrapper include paths are affected; platform validation can follow separately.
Moore Threads	Yes	Not run	Generated public wrapper include paths are affected; platform validation can follow separately.
Ascend	Yes	Not run	Generated public wrapper include paths are affected; platform validation can follow separately.

Benchmark / Performance Impact

No runtime performance impact expected. This change only adjusts generated public include layout and install rules.

Notes for Reviewers

This replaces the closed #4 with a dedicated branch name so it is no longer sharing the former PR #3 branch. It is intended as the InfiniRT prerequisite for migrating InfiniOps to consume installed InfiniRT headers cleanly. The key thing to review is whether the generated public mirror under infini/rt/detail/... contains every header needed by installed consumers without exposing src/native/... or root-level short header names.