Root cause (harness multi_leg, ~14-TRX residual): pink_direct rebuilds the legacy
TradePosition from the kernel slot every step, but left exit_leg_index=0, so
IntentEngine.next_exit_ratio() consumed ratio[0] (0.5) on EVERY leg and never
advanced to the final leg's 1.0:
leg1: 0.5×53 ≈ 26 closed -> 27 remain
leg2: 0.5×27 ≈ 13 closed -> 14 RESIDUAL (kernel believes flat, exchange isn't)
Fix: propagate the kernel slot's authoritative active_leg_index into the rebuilt
legacy position's exit_leg_index, so the intent engine consumes the correct leg
ratio. The final leg now closes the full remaining -> fully flattens.
Verified: offline 18 green (no regression); live VST harness multi_leg now closes
fully (XPASS) — residual gone, all 6 capital invariants hold. xfail mark removed;
capital-accounting battery is now fully green (7/7) on testnet.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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