For each issue anchor present in BASE 63279301bc non-test .py and absent on HEAD, the BASE comment/docstring block was re-attached at the HEAD location of the code it explained (matched by the distinctive code line / enclosing def). Sentences already covered by an existing HEAD comment were deduped; the issue number always survives. Insert-only: no code lines changed.
Drop dead read_error_body_or_default / LAYER_RUNTIME; inline single-use
_build_default_credential/_safe_close; compact incident narratives to their
invariants in the guards. Byte-cap and deadline semantics of
read_streaming_error_body verified identical.
Teknium