Fix UndefVarError(ImVec2) in generated pOut wrappers

[aplavin]

Depends on #19. Branched off aarch64-darwin-static-cfunc, so until #19 merges the diff shows all 6 commits; only the last two belong here. Diff cleans up automatically once #19 lands.

ImGuiTestEngine.GetWindowTitlebarPoint("any-window") (and GetPosOnVoid / GetMainMonitorWorkPos / GetMainMonitorWorkSize) throws UndefVarError: ImVec2not defined inImGuiTestEngine`` — src/wrapper.jl emits a bare `Ref{ImVec2}()` and `ImVec2` isn't bound at the wrapper module's scope. Bug pre-dates #19 — same four sites exist on `master`.

Root cause: the renamer in gen/generator.jl rewrites Im* symbols inside function-call args (@capture(x, f_(args__))) but skips curly type expressions like Ref{ImVec2}. The pOut boilerplate splices the raw ccall type into a curly, so the renamer never qualifies it.

Fix: symmetric elseif @capture(x, T_{params__}) branch with the same rewrite. Regenerating gives Ref{libig.ImVec2}() at the 4 load-bearing sites plus 16 cosmetic Ref{ImGuiTestRef} → Ref{lib.ImGuiTestRef} rewrites (functionally identical via the existing top-of-file aliases).

[JamesWrigley]

If it's only ImVec2 causing issues then I'd lean towards just adding it to the wrapper.jl preamble. I wonder if JET could detect this sort of thing, might be worth adding it to CI in the future.

Depends on #19. Branched off aarch64-darwin-static-cfunc, so until #19 merges the diff shows all 6 commits; only the last two belong here. Diff cleans up automatically once #19 lands.

This only happens if you set the target branch to the parent branch.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 28.22%. Comparing base (a298c85) to head (3500e8a).

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #20      +/-   ##
==========================================
+ Coverage   26.14%   28.22%   +2.08%     
==========================================
  Files           5        5              
  Lines         960      960              
==========================================
+ Hits          251      271      +20     
+ Misses        709      689      -20     

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[JamesWrigley]

LGTM!