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openspec/specs/article-tldr-summary/spec.md

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+## Purpose
+
+Canonical specification for article-tldr-summary requirements synced from OpenSpec change deltas.
+
+## Requirements
+
+### Requirement: System generates structured TL;DR summary for each fetched article
+The system SHALL generate a concise summary artifact for each newly fetched article using Perplexity during ingestion.
+
+#### Scenario: Successful summary generation
+- **WHEN** a new article is accepted in ingestion
+- **THEN** the system generates TL;DR bullet points and a concise summary body
+- **AND** output is persisted in a structured, template-compatible format
+
+#### Scenario: Summary generation fallback
+- **WHEN** summary generation fails for an article
+- **THEN** ingestion continues without failing the entire cycle
+- **AND** the article remains available with existing non-summary content
+
+### Requirement: Summary storage includes citation and source context
+The system SHALL persist source/citation information needed to render summary provenance.
+
+#### Scenario: Persist source and citation metadata
+- **WHEN** summary content is stored
+- **THEN** associated source/citation fields are stored with the article summary artifact
+- **AND** response payloads can render a "Source and Citation" section