Make the edge protocol contract test pass on its own

tests/edge_protocol.test.ts validates schemas carrying format: "uuid" and
format: "uri" but registered neither. TypeBox treats an unregistered
format as a failure, not a pass, so every start_print in that file was
rejected - and the file still went green, because some other test in the
same run imported Elysia first and registered the formats globally. Run
alone it failed. A contract test that depends on which files ran before
it is the worst way for one to behave.

It now imports src/validation/formats, which exists for exactly this and
gains a "uri" validator: anything the platform parses as an absolute URL.
Lenient on purpose - the only user is a presigned object-store GET that
this backend mints itself, so a stricter pattern would have to anticipate
whatever query parameters a signer adds, and rejecting a URL R2 would
have honoured costs a print for no security.

tests/edge_protocol.test.ts

@@ -1,6 +1,12 @@
 import { describe, expect, it } from "bun:test";
 import { Value } from "@sinclair/typebox/value";
 import { EdgeClientMessageSchema, EdgeServerMessageSchema } from "@continuum/ts-types";
+// Registers `uuid` and `uri`. Not optional: TypeBox treats an unregistered
+// format as a failure, so without this every `start_print` in this file is
+// rejected for its job_id and url. This file used to rely on another test
+// file importing Elysia first, which made it pass in a full run and fail on
+// its own.
+import "../src/validation/formats";
 
 import currentCapture from "./fixtures/gateway_frames.json";
 import legacyCapture from "./fixtures/gateway_frames_legacy_nulls.json";