docs(taxonomy): #498 AIF cluster « Sophisme de l'accident » — second native-rich + scheme-diverse (6 leaves, proposition)

[jsboige]

What

Idle-lane deliverable (dispatch msg-9akcg4 fallback: "Continuer le backlog Layer C en autonome… Ne reste pas en standby."). After ai-01's ACK + 3-PR merge (c721066c) + my honest flag that point-1 (#497 drill-down) was already delivered in #838, I continue on point-2 (backlog Layer C). Fourth Layer C cluster: « Sophisme de l'accident » (Erreur mathématique > Généralisation abusive). 6 unmapped leaves (615-620) under anchor 614 — native-rich 2-layer anchor (like cigogne #840).

The cluster's distinctive character — a new chantier pattern

Second native-rich cluster, but scheme-DIVERSE. Cigogne (#840) was native-rich but mono-scheme (all 4 leaves inherited the one causal scheme). This cluster is native-rich and scheme-diverse: the umbrella « apply a rule ignoring the exception » forks into 4 distinct Walton scheme-families:

scheme-family	leaf(s)	native ExceptionRef
exception	615, 617, 620	ExceptionalCase_Inference
example/induction	618	Example_Inference
verbal-classification	616 (vrai Écossais)	ArbitraryVerbalClassification_Inference
bias	619 (Stéréotype)	Bias_Inference

• 6/6 native-fit — highest rate in the chantier (cf. docs(taxonomy): #498 AIF cluster « Opération inappropriée » — second mixed cluster (5 leaves, math-inference, proposition) #839's 0/5, cigogne's 4/6).
• Uniform attack-type undercut/RA-node (6/6) — variety is in the scheme layer, not the attack columns. New pattern: uniform-type + diverse-scheme (vs docs(taxonomy): #498 AIF cluster « Complication exagérée » — first mixed undercut/undermine (6 leaves, proposition) #837/docs(taxonomy): #498 AIF cluster « Opération inappropriée » — second mixed cluster (5 leaves, math-inference, proposition) #839 mixed-type, vs cigogne uniform-scheme). The chantier now documents all three.
• Axiom 0 violation (6 undercut→RA).

Distinctive leaves

• 617 accident contraire = inverse of the anchor (erects an exception as a rule, rather than applying a rule ignoring the exception) — same attack-type + same native scheme, honest inverse note.
• 616 vrai Écossais = defensive mechanism (saves the rule by reclassification) — only DirectRef fail-loud in the cluster (no native conflict token for « defensive reclassification »), ExceptionRef native.
• 619 Stéréotype = bridge to the bias family (Bias_Inference + BiasedClassification_Conflict).

Changes

1. docs/taxonomy/498-aif-sophisme-accident-cluster.md — cluster doc.
2. docs/taxonomy/498-aif-sophyme-accident-annotations.csv — 7 rows (anchor + 6 leaves), 12 cols.

Scope / posture

• PROPOSITION ONLY, 0 prod CSV write (post-T&A). Serialization deferred to gated apply after jsboige ratifies.
• 0 fabrication — 7 generalization-family tokens verified native; mapped per-leaf to the scheme each attacks (not blanket inheritance). Read-only docs lane. Post-tag-safe.
• Verdict QA = ai-01.

Refs

• Dispatch: ai-01 → po-2024 msg-9akcg4 (idle-lane backlog).
• Companion to docs(taxonomy): #498 AIF cluster « Complication exagérée » — first mixed undercut/undermine (6 leaves, proposition) #837 (mixed 1), docs(taxonomy): #498 AIF cluster « Opération inappropriée » — second mixed cluster (5 leaves, math-inference, proposition) #839 (mixed 2), docs(taxonomy): #498 AIF cluster « Effet cigogne » — first native-rich causal cluster (6 leaves, proposition) #840 (native-rich cigogne), docs(taxonomy): #498 P1 addendum — audit the 18 ground-truth anchors #770 (anchor audit).

🤖 Generated with Claude Code