diff --git a/inbox/queue/2026-02-26-bianco-pain-pleasure-valence-mechanistic.md b/inbox/null-result/2026-02-26-bianco-pain-pleasure-valence-mechanistic.md
similarity index 98%
rename from inbox/queue/2026-02-26-bianco-pain-pleasure-valence-mechanistic.md
rename to inbox/null-result/2026-02-26-bianco-pain-pleasure-valence-mechanistic.md
index 5ee484ada..e0eb7f290 100644
--- a/inbox/queue/2026-02-26-bianco-pain-pleasure-valence-mechanistic.md
+++ b/inbox/null-result/2026-02-26-bianco-pain-pleasure-valence-mechanistic.md
@@ -7,9 +7,10 @@ date: 2026-02-26
 domain: ai-alignment
 secondary_domains: []
 format: paper
-status: unprocessed
+status: null-result
 priority: low
 tags: [valence, mechanistic-interpretability, emotion, pain-pleasure, causal-intervention, AI-welfare, interpretability]
+extraction_model: "anthropic/claude-sonnet-4.5"
 ---
 
 ## Content