fix(spec): refuse a declared def rename that would collapse two baseline keys onto one - #17920

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os-bill merged 2 commits into

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claude/issue-17383-rename-merge-into-populated-target

Sep 13, 2026

Commits on Sep 13, 2026

fix(spec): refuse a declared def rename that would collapse two baseline keys onto one
claude
committed
82ef3b3
test(spec): pin the baseline-collision refusal, and correct a fixture that modelled an impossible baseline
claude
committed
0030701