winditer/dsh-intertidal

Adds a full-screen sea overlay that appears on a schedule (3 minutes every 120 minutes by default) and fades out on its own. The phase, sky colours and moon come from the solar position computed on the host from a city table, so the light matches the real time and place. The water is either drawn procedurally on a canvas from a perspective noise field (random patches that grow toward the viewer, with sun glitter, near-field whitecaps and daytime gulls; at night a moon) or taken from images and videos in a folder you choose, or from web links fetched once into a local cache and graded to the current light. Includes quiet hours, deferring while you type, skip-today, a draggable corner-window form and an optional synthesised surf sound. No telemetry; the only network requests are the links you paste.