## MODIFIED Requirements

### Requirement: Language fallback to English is deterministic
The system SHALL return English source content when the requested translation is unavailable or fails translation quality validation.

#### Scenario: Missing translation fallback
- **WHEN** a client requests Tamil or Malayalam content for an article lacking that translation
- **THEN** the system returns the English headline and summary for that article
- **AND** response shape remains consistent with language-aware responses

#### Scenario: Invalid translation fallback
- **WHEN** a client requests Tamil or Malayalam content for an article whose translation failed quality validation
- **THEN** the system returns English headline and summary for that article
- **AND** avoids returning invalid translated output
