Implement homework_4: ipb::named_vector and ipb algorithm functions

[Copilot]

homework_4/include/homework_4.h was empty and homework_4/ had no CMakeLists.txt, causing the entire test suite to fail to compile.

Added: homework_4/include/homework_4.h

• ipb::named_vector<T> — template wrapper around std::vector<T> with a string name:
  • empty() → true when either name or vector is empty
  • size() → name.size() + vector.size()
  • capacity() / resize() / reserve() delegate to the inner vector
• Algorithm free functions in namespace ipb:
  accumulate, count, all_even, clamp, fill, find, print, toupper, sort, rotate (bounds-normalised), reverse

ipb::named_vector<int> v{"scores", {3, 1, 4, 1, 5}};
v.size();           // 6 (name) + 5 (vec) = 11
v.empty();          // false — both name and data present

ipb::sort(v);
v.vector();         // {1, 1, 3, 4, 5}

ipb::toupper(v);
v.name();           // "SCORES"

Added: homework_4/CMakeLists.txt

Defines ipb_algorithm as a CMake INTERFACE (header-only) library so the test target can link against it.

Updated: homework_4/tests/

Catch2 v3 compatibility: <catch2/catch.hpp> → <catch2/catch_all.hpp>, dropped CATCH_CONFIG_MAIN, switched link target to Catch2::Catch2WithMain.

Original prompt

explain this error?

The user has attached the following file paths as relevant context:

• homework_4/include/homework_4.h

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