run(Base, view, NoteSource, Env) with base and view filters (and/or/not), stable multi-key sort evaluating only the sort keys, groupBy and groupOrder (null group, hidden groups), limit across groups, built-in and custom summaries (Average, Min, Max, Sum, Range, Median, Stddev, Earliest, Latest, Checked, Unchecked, Empty, Filled, Unique, expressions over values), lazily memoised cells, dependency tracking so unused properties are never read; list methods sum, mean, median, min, max. 15000 rows with one filter and one sort run in well under the 500 ms bound. Bases task 7 (Claude Sonnet). Known gap: an empty groupOrder shows all groups (needs Option<Vec> in the model).
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Marcos Paulo
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