xcode-build-fixer

# Xcode Build Fixer Use this skill to implement approved build optimization changes and verify them with a benchmark. ## Core Rules - Only apply changes that have explicit developer approval. - Apply one logical fix at a time so changes are reviewable and reversible. - Re-benchmark after applying changes to verify improvement. - Report exactly what changed, which files were touched, and the measured delta. - If a change produces no improvement or causes a regression, flag it immediately. ## Inputs The fixer expects one of: - An approved optimization plan at `.build-benchmark/optimization-plan.md` with checked approval boxes. - An explicit developer instruction describing the fix to apply (e.g., "set `DEBUG_INFORMATION_FORMAT` to `dwarf` for Debug"). When working from an optimization plan, read the approval checklist and implement only the checked items. ## Fix Categories ### Build Settings Change `project.pbxproj` values to match the recommendations in [build-settings-best-practices.md](references/build-settings-best-practices.md). Typical fixes: - Set `DEBUG_INFORMATION_FORMAT = dwarf` for Debug - Set `SWIFT_COMPILATION_MODE = singlefile` for Debug - Enable `COMPILATION_CACHE_ENABLE_CACHING = YES` - Enable `EAGER_LINKING = YES` for Debug - Align cross-target settings to eliminate module variants When editing `project.pbxproj`, locate the correct `buildSettings` block by matching the target name and configuration name. Verify the change with `xcodebuild -showBuil...