Schengen 90/180 Sliding-Window & Midnight-Border EES Overstay Guard

Deterministic Exact daily sliding 180-day convolution sum(I[t-179..t]) <= 90 with inclusive entry/exit midnight boundary & forward max-contiguous-stay solver engine (.ics, .csv, .pdf, .json) built for EU EES, Flighty, TripIt, Apple Calendar — zero-upload ephemeral Wasm RAM execution.

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Cloudflare Ephemeral Wasm RAM · 0% Retention

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