Migrate public headers to include/sbgraph and enforce <sbgraph/...> consumption

[Copilot]

This PR migrates sb-graph’s public header surface to a namespaced include layout so downstream users consume headers via <sbgraph/...> instead of ambiguous top-level paths. It also updates CMake export/install wiring so SBG::sbgraph exposes only the prefixed public include tree.

• Public API include layout

  • Added include/sbgraph/ tree and placed the required public API headers under include/sbgraph/<original path>.
  • Included additional transitive headers in the same tree so the published public headers are self-contained for downstream compile.

• Include-path migration across project sources

  • Updated includes in headers/sources/tests/tools from old project-root paths (algorithms/..., eval/..., sbg/..., util/..., etc.) to <sbgraph/...>.
  • This makes in-repo builds validate the installed-style API contract instead of relying on source-root include leakage.

• CMake interface + install behavior

  • SBG::sbgraph now uses:
    • BUILD_INTERFACE: ${PROJECT_SOURCE_DIR}/include
    • INSTALL_INTERFACE: ${CMAKE_INSTALL_INCLUDEDIR}
  • Install rules now install only include/sbgraph to ${CMAKE_INSTALL_INCLUDEDIR}.
  • Preserved package export/config flow (SBGraphConfig.cmake, SBGraphTargets.cmake, SBG::sbgraph).

• Consumer validation target

  • Added a small compile-only consumer target under tests that includes public headers via <sbgraph/...> and links through SBG::sbgraph.

target_include_directories(sbgraph
  PUBLIC
    $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>
    $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
)

install(DIRECTORY include/sbgraph
  DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
  FILES_MATCHING PATTERN "*.hpp")

#include <sbgraph/eval/file_evaluator.hpp>
#include <sbgraph/sbg/sbg.hpp>

• CI/build note tied to issue scope
  • The referenced CI failure investigated from Actions logs was make: *** No rule to make target 'test'. Stop.

[Kalashnikovni]

Build failed, corrections are needed. @copilot is mandatory that the project builds and passes tests.

[Kalashnikovni]

Build failed, corrections are needed. @copilot is mandatory that the project builds and passes tests.

[Copilot]

Build failed, corrections are needed. @copilot is mandatory that the project builds and passes tests.

Addressed in commit ddc641c. I fixed the CI compile failure by adding ${PROJECT_SOURCE_DIR} to test/performance benchmark target include directories so internal benchmark headers like test/performance/bm_exec.hpp resolve correctly during build.

[Kalashnikovni]

@copilot Build still not complete, fails with the error:

[100%] Building CXX object test/performance/CMakeFiles/sbg-benchmark.dir/utils.cpp.o
/home/runner/work/sb-graph/sb-graph/test/performance/utils.cpp: In function ‘bool SBG::perf::detail::updateN(const std::string&, int)’:
/home/runner/work/sb-graph/sb-graph/test/performance/utils.cpp:65:11: error: ‘ERROR’ is not a member of ‘SBG::Util’
   65 |     Util::ERROR("Unable to open file ", filename, "\n");
      |           ^~~~~
make[2]: *** [test/performance/CMakeFiles/sbg-benchmark.dir/build.make:219: test/performance/CMakeFiles/sbg-benchmark.dir/utils.cpp.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:1363: test/performance/CMakeFiles/sbg-benchmark.dir/all] Error 2
make: *** [Makefile:136: all] Error 2

[Copilot]

@copilot Build still not complete, fails with the error:

[100%] Building CXX object test/performance/CMakeFiles/sbg-benchmark.dir/utils.cpp.o...

Fixed in commit 05be7ee. I added #include <sbgraph/util/debug.hpp> in test/performance/utils.cpp, which provides SBG::Util::ERROR and resolves the reported compile error.