docs: production safety audit implementation plan (38 tasks, 5 layers)
Layer 0: Data Integrity (7 fixes) — position race, price validation, counters
Layer 1: Risk Enforcement (10 fixes) — order atomicity, overfill, risk bypass
Layer 2: ML Pipeline (10 fixes) — random weights, epsilon-greedy, NaN validation
Layer 3: Broker Safety (5 fixes) — connection drops, volume overflow, DB sync
Layer 4: Auth & Ops (6 fixes) — auth stub gating, live trading confirmation
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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