Get all articles with language information for cross-language discovery.
NOTE: This function is currently UNUSED in production but preserved for potential
future use. It was implemented for Issue #155's cross-language discovery feature
but the requirement changed to language-specific filtering.
Get all articles with language information for cross-language discovery.
NOTE: This function is currently UNUSED in production but preserved for potential future use. It was implemented for Issue #155's cross-language discovery feature but the requirement changed to language-specific filtering.