ai-agents-metadata-filter-or-b-when-using-metadatafilters-with-filtercondition-or-43fb7efd

THEN Create a custom vector store that overrides the `_process_filters` method to treat multiple filters on the same key as an OR condition (equivalent to an IN filter). Patch the SimpleVectorStore to combine same-key ExactMatchFilter values into a single OR check against the node's metadata dictionary.

class MySimpleVectorStore(SimpleVectorStore):
    def _process_filters(self, filters, metadata):
        # Group filters by key; combine same-key filters with OR
        grouped = {}
        for f in filters.filters:
            grouped.setdefault(f.key, []).append(f.value)
        for key, values in grouped.items():
            if key in metadata and metadata[key] not in values:
                return False
        return True