{
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      "outline": "https://lvlltd.com/skills/frontend-anti-slop-designer/outline.json",
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        "tag_overlap"
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  "sources": {
    "explicit_fields": "related_skills / requires / complements when present",
    "co_purchase": "same wallet confirmed unlocks (ledger)",
    "structural": "same_category + tag_overlap"
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  "note": "Hand-curated bundles remain under /api/shop → bundles; this graph scales beyond editorial lists."
}