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Fly Preview Deployments - Completed ✅
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In an attempt to speed up the fog and annotation layer, this PR shifts the data saved from uploaded PNG masks, to Run Level Encoded (RLE) data. This means they are saved in the DB directly with a much smaller footprint. Because these text columns are still largish (though much smaller than image blobs) we now use YJS triggers based on timestamps to tell a connected playfield or editor to refresh these "images" and fetch new copies.
This is backwards compatible with the old system. The old PNGs can still be read, but they will migrate over as new fog or annotations are written.