fix: build run use current uid/gid

[reddevillg]

No description provided.

[gemini-code-assist]

Code Review

This pull request updates apps/ll-builder/src/main.cpp to retrieve and pass the effective user ID (UID) and group ID (GID) to runInNamespace when buildRun is parsed. The review feedback correctly identifies a type safety issue where gid is declared as std::optional<uid_t> instead of std::optional<gid_t>, which should be resolved.

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[gemini-code-assist]

Declaring std::optional<uid_t> uid, gid; makes both uid and gid have the type std::optional<uid_t>. However, gid should be of type std::optional<gid_t>. While uid_t and gid_t are often represented by the same underlying integer type on Linux, they are distinct types, and using the wrong type can lead to compilation errors or type-safety violations.

        std::optional<uid_t> uid;
        std::optional<gid_t> gid;

[codecov]

Codecov Report

❌ Patch coverage is 0% with 5 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
apps/ll-builder/src/main.cpp	0.00%	5 Missing ⚠️

Files with missing lines	Coverage Δ
apps/ll-builder/src/main.cpp	0.00% <0.00%> (ø)

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