fix(plugins): filter-bar BETWEEN is refused on Typesense and Weaviate and misrendered on BigQuery

[datlechin]

Summary

• Filter-bar BETWEEN was refused on Typesense (year is not a numeric field) and Weaviate (5,10 is not a number), and rendered on BigQuery as `n` BETWEEN '1,9' AND 9. The app sends a BETWEEN as value: "lower,upper" plus secondValue: upper, and TypesenseFilterBuilder.range, WeaviateFilterBuilder.between and BigQueryQueryBuilder.betweenClause read the whole joined value as the lower bound; each now strips the trailing ,upper first, comparing Unicode scalars so a lower bound ending in a Prepend scalar such as U+0600 (which merges with the comma into one Character) is still recovered.
• Cassandra's Match any refusal told the reader to "Use Match All", a control no one who can reach that refusal has. The filter bar hides Match any on Cassandra and ScyllaDB and rewrites a restored Match any to Match all, so only an MCP client sending logic: "or" gets the message; it now states the limit, "Cassandra filters can only require every condition to match.", and names no control.

Tests

Every BETWEEN test below builds the filter the way the app does, through TableFilter.asPluginQueryFilter, or feeds that joined shape literally where the package cannot see the app. Each one fails without the fix.

• TypesenseFilterBuilderTests.buildsRangeFromAppEncoding
• TypesenseFilterBuilderTests.buildsRangeAfterSearchTagRoundTrip
• TypesenseFilterBuilderTests.buildsNumericComparisons (its BETWEEN line now feeds "1937,1965")
• BigQueryQueryBuilderSQLTests.betweenFromAppEncoding
• BigQueryQueryBuilderSQLTests.betweenFromAppEncodingWithComma
• BigQueryQueryBuilderSQLTests.betweenFromAppEncodingWithPrependScalar
• BigQueryQueryBuilderTagColumnTests.filterCarriesColumns
• WeaviateFilterOperatorTests.betweenBounds
• WeaviateFilterOperatorTests.betweenReadsLowerBoundOffJoinedValue
• WeaviateFilterOperatorTests.betweenRefusesPrependScalarLowerBoundAlone
• WeaviateSortTests.secondValueRoundTrips
• CassandraBrowseStatementTests.matchAnyRefusalNamesNoControl

BigQueryQueryBuilderSQLTests.betweenFromJoinedValueAlone guards the existing fallback for a BETWEEN with no separate upper bound and passes with or without the fix.

Docs

The docs rewrite branch covers the user-facing text.