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c53a563bff
Analysis of 410 live closed trades found the edge is real but was being destroyed by execution: gross +$267 vs $245 fees; trades held <1h were net negative (the <15m bucket alone: -$48 on $66 fees) while 1h+ holds carried +$78; shorts lost $72 while longs made $94 — and both the prompt and the engine were manufacturing those losers. Changes, each tied to the data: - Prompt: removed the 'MUST open at least one long AND one short every cycle' mandate (forced weak-signal shorts); direction is now data-driven with 'never open just to balance the book'. Added fee-awareness (round trip ≈ 0.1% notional, require expected move ≥ 3x cost) and aligned the hold discipline with the backend throttle. - Forced book-balance opens now require |board z-score| ≥ 0.75 — the engine previously force-opened full-size 10x positions on near-neutral signals with hardcoded confidence 70. DirectionalCandidates now carries scores. - Min AI-managed hold raised 45m → 60m (the 15-60m bucket still bled after the earlier throttle landed). - Legacy prompt hygiene: vergex path drops long-only-era custom prompts and zh-era configs fall back wholesale to built-in English sections — fixes the two long-failing kernel prompt tests. - New Edge Profile dashboard panel: net after fees by hold-time bucket and side, computed from recent closed trades, with an automatic takeaway line — the fee/churn regression detector, always visible. Fixed the HistoricalPosition timestamp types (epoch ms, not strings).