First deployment

openspec/specs/alternative-image-selection-and-dedupe/spec.md

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+## Purpose
+
+Canonical specification for alternative-image-selection-and-dedupe requirements synced from OpenSpec change deltas.
+
+## Requirements
+
+### Requirement: Refetch selects an alternative image for target article
+Refetch operations SHALL select an image different from the article's current summary image when a usable alternative exists.
+
+#### Scenario: Current image is excluded from candidate result
+- **WHEN** refetch evaluates image candidates for an article
+- **THEN** the system rejects candidates matching the current summary image identity
+- **AND** stores a different accepted image candidate when available
+
+### Requirement: Candidate filtering enforces topical relevance and safety
+Refetch candidate selection SHALL reject clearly unrelated imagery classes while preserving topic relevance.
+
+#### Scenario: Unrelated animal/pet candidate is rejected
+- **WHEN** candidate metadata or source signals indicate unrelated animal/pet imagery
+- **THEN** the system rejects that candidate for article refetch
+- **AND** continues evaluating other candidates or fallback paths
+
+### Requirement: Low-confidence selection falls back to AI-themed default
+If no candidate satisfies relevance and safety thresholds, the system SHALL use deterministic AI-themed fallback imagery.
+
+#### Scenario: All candidates rejected
+- **WHEN** candidate evaluation exhausts without an accepted image
+- **THEN** the system assigns configured AI-themed fallback image
+- **AND** records fallback decision path in command output/logs