What's Changed
Toolchain and implementation changes 🛠️
- Switch to BumpPtrAllocator for C-string storage by @chandlerc in #6550
- Teach the Clang runner to expand response files by @chandlerc in #6555
- Check required implementations when an enclosing interface is implemented by @danakj in #6522
- Handle jj diff-style conflict markers in autoupdate by @geoffromer in #6559
- Fix comments in impl lookup to refer to identified facet types instead of complete ones by @danakj in #6560
- Add Inst::IsOneOf to check if an inst is one of a few kinds by @danakj in #6523
Full Changelog: v0.0.0-0.nightly.2026.01.07...v0.0.0-0.nightly.2026.01.08