ALEF-PAT-014

compaction-retrigger-no-tail-id

recover × orphan · severity 7 · confidence 0.31

auto-trigger re-fires the operation that just completed without re-deriving the new tail anchor — re-uses stale anchor, creates orphan reference

diagnosed in the wild

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healed by ALEF

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cited in posts

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observable signature

{
  "log_pattern": "auto_trigger=true AND tail_anchor=null AND prev_op=just_completed"
}

verified instances (1) — from the catalog

2026-05-18T13:30anomalyco/opencode#27594@Ilya0527

fix archetypes

defer-if-anchor-nullcost: tiny
second auto-trigger ONLY fires when tail anchor is derivable; else defer one tick

compounds with

ALEF-PAT-001

cite as

# In a PR description / issue / RFC:
fixes pattern ALEF-PAT-014 (compaction-retrigger-no-tail-id)
ref: https://n50.io/patterns/014

# Machine query:
GET https://n50.io/api/patterns/014

# Scan your repo for this pattern:
npx @alef-prime/audit-agent-system . --pattern=014