sedi-guardian before the re-pin to keripy 80f77b73¶

This exact published schema revision has SAID EGpQePxZPKq9nPF99rI9IawvJgMukfPxjI6WKN8GFVfV. It is retained so credentials pinned to it remain resolvable. Its version field is 3.0.0; the directory name distinguishes it from the current schema, whose edge pins moved to Sam Smith's Core at 80f77b73 and which therefore carries a different SAID (this.i @hxqwde3o).