Indexing-ambiguity detection/resolution is no longer part of scaling: it
is a dedicated per-image step for stills (or a post-full-merge step for
rotation). Pull the stills per-image resolver out of ScaleOnTheFly into a
new ReindexAmbiguityResolver in ReindexAmbiguity.{h,cpp}, alongside the
existing rotation free functions (ChooseReindex / ReferenceIntensityCC).
Both workflows now share the operator generation and the best-op
selection (new file-local PickBestReindex helper); ChooseReindex is
rewired onto it. ScaleOnTheFly is now purely a scaling engine (no
ambiguity_ops, no resolve_ambiguity flag, no ResolveIndexingAmbiguity).
Pure refactor: behaviour is unchanged. IndexAndRefine now holds a
ReindexAmbiguityResolver and calls Resolve() at the same call site.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
leonarski_fandClaude Opus 4.8
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