removed generated cache cleanup

Removed Generated Build Cache

Summary

Tracked Xcode DerivedData, module cache, SDK stat cache, and build-output files were removed because they are generated artifacts and should not live in source control.

Paths

Removed path	Removal date(s)	Commit(s)
.deriveddata/CompilationCache.noindex/generic/lock	2026-04-07	1705aa1
.deriveddata/ModuleCache.noindex/modules.timestamp	2026-04-07	1705aa1

What To Remember

• Removal does not always mean the concept disappeared completely; some behavior moved into a narrower owner.
• If resurrecting any of this code, first verify the current product scope, helper trust model, release process, and App Store constraints.
• The complete deleted-path index lists generated-cache removals separately from product-feature removals.