Pre-mode preserves consumed changeset .md files, so every beta's distilled notes and GitHub prerelease body aggregated the entire cycle since the last stable (v0.73.0-beta.4 shipped the full 0.72.0→0.73.0 aggregate). Betas now distill only changesets not yet recorded in pre.json's consumed ledger, and fail loudly when a beta would ship nothing new. Stable promotion still feeds the full preserved set, keeping its notes an explicit rollup of every beta in the cycle.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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