force TBB linker

[TexLeeV]

Description

Brief description of what this PR changes and why.

Fixes #(issue number, if applicable)

Type of Change

• Bug fix (non-breaking change that fixes an issue)
• New learning module (adds new exercises/tests)
• Enhancement (improves existing module or documentation)
• Documentation update
• Build system/infrastructure change

Changes Made

Testing

How have you tested these changes?

• All tests pass locally (ctest --preset gcc --verbose)
• Built specific targets successfully
• Manually verified instrumentation output (if applicable)
• Tested on multiple compilers (if applicable): GCC ___, Clang ___

Test Output (if applicable)

Paste relevant test output here

Code Quality Checklist

• Code follows project style guidelines (see CONTRIBUTING.md)
• No trailing whitespace on any line
• Files end with exactly one newline
• Constructor initializer lists use leading comma format
• No syntax violations or compiler warnings

Documentation

• Updated main README.md and docs/LEARNING_PATH.md (if adding or changing module registration)
• Q/A/R patterns are correct and preserved (if applicable)
• No additional README files created in subdirectories
• No large summary sections added to code files

Socratic Pattern (if applicable)

For changes involving Q/A/R content:

• Questions are specific and answerable by running code
• Questions focus on observable behavior
• Responses validate or correct with technical precision
• Used instrumentation (EventLog) to make behavior visible

Additional Notes

Any additional context, screenshots, or information that reviewers should know.

License Agreement

• I confirm that my contributions are my original work and agree to license them under the MIT License

[Copilot]

Pull request overview

Updates the STL learning module’s CMake configuration to ensure the algorithms test target links against Intel oneTBB.

Changes:

• Add a CMake find_package(TBB REQUIRED) dependency in learning_stl.
• Link test_algorithms against TBB::tbb via the existing add_learning_test(...) helper.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[Copilot]

find_package(TBB REQUIRED) makes TBB a hard configure-time dependency for the entire project because learning_stl is always added via add_subdirectory(...) (top-level CMakeLists.txt:40). That will break configuration on environments where TBB isn’t installed, even though only test_algorithms links it. Consider (a) moving find_package(TBB ...) to the top-level alongside other dependencies and/or (b) making TBB optional and only adding/linking test_algorithms when TBB is found (with a clear message when it’s skipped).

[Copilot]

The PR description is still the default template (no filled-in rationale, linked issue, or testing notes). Since this change introduces a new external dependency (TBB) and changes link behavior, please update the PR description to explain the motivating linker failure/use-case and how it was validated (e.g., which compiler/libstdc++/CI environment).