Dedup detector now merges high-confidence duplicates silently instead
of piling every proposal into a human triage queue. Matches the 3-tier
escalation pattern that auto_triage already uses.
Tiering decision per cluster:
TIER-1 auto-approve: sonnet confidence >= 0.8 AND min_pairwise_sim >= 0.92
AND all sources share project+type → auto-merge silently
(actor="auto-dedup-tier1" in audit log)
TIER-2 escalation: sonnet 0.5-0.8 conf OR sim 0.85-0.92 → opus second opinion.
Opus confirms with conf >= 0.8 → auto-merge (actor="auto-dedup-tier2").
Opus overrides (reject) → skip silently.
Opus low conf → human triage with opus's refined draft.
HUMAN triage: Only the genuinely ambiguous land in /admin/triage.
Env-tunable thresholds:
ATOCORE_DEDUP_AUTO_APPROVE_CONF (0.8)
ATOCORE_DEDUP_AUTO_APPROVE_SIM (0.92)
ATOCORE_DEDUP_TIER2_MIN_CONF (0.5)
ATOCORE_DEDUP_TIER2_MIN_SIM (0.85)
ATOCORE_DEDUP_TIER2_MODEL (opus)
New flag --no-auto-approve for kill-switch testing (everything → human queue).
Tests: +6 (tier-2 prompt content, same_bucket edges, min_pairwise_similarity
on identical + transitive clusters). 395 → 401.
Rationale: user asked for autonomous behavior — "this needs to be intelligent,
I don't want to manually triage stuff". Matches the consolidation principle:
never discard details, but let the brain tidy up on its own for the easy cases.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Anto01
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