## ADDED Requirements

### Requirement: Context-aware image query generation
Image refetch SHALL construct provider queries from article context including keywords and mood/sentiment cues.

#### Scenario: Context-enriched query
- **WHEN** a queued article is processed for image refetch
- **THEN** the system derives query terms from article headline/summary content
- **AND** includes mood/sentiment-informed cues to improve relevance

### Requirement: AI-domain fallback keywords
When context extraction is insufficient, the system SHALL use AI-domain fallback keywords.

#### Scenario: Empty or weak context extraction
- **WHEN** extracted context terms are empty or below quality threshold
- **THEN** the system applies fallback terms such as `ai`, `machine learning`, `deep learning`

### Requirement: Generic AI fallback image on terminal failure
If no usable provider image is returned, the system SHALL assign a generic AI fallback image.

#### Scenario: Provider chain exhaustion
- **WHEN** all provider attempts fail or return unusable images
- **THEN** the system stores a generic AI fallback image for the article
