Keep prefetched rows on ManagedCursor so partial loops and explicit fetches share one position, and stop existing iterators after close or retirement. Preserve chunked reads and native SQLite result lifetime on reexecution and errors.
Catch OptionError before ValueError so legacy auto-tag requests receive the actual validation error. Remove the overwritten ViewerJS title option.
Regression tests failed before the fixes for lost rows, reads after close/retirement, and misleading option errors. Focused Python checks pass; cursor checks also pass on Python 3.13 and 3.14. Refs #321.
Vito Sansevero
856609a43a