add istanbul for coverage, unit tests for resposne bodies, add coverage here and there

src/lib/test/me.spec.ts

@@ -0,0 +1,30 @@
+import { createId } from "$lib/Id";
+import { isMe, type Me } from "$lib/me";
+import { equal, ok } from "assert";
+import { describe, it } from "vitest";
+
+describe("me", () => {
+	describe("isMe", () => {
+		const target: Me = {
+			id: createId(),
+			role: "test-role",
+			username: "Ms. User",
+		};
+
+		it("returns true when the target is shaped like a 'Me'", () => {
+			ok(isMe(target));
+		});
+
+		it("returns false when the target is missing a property", () => {
+			const { id, role, username } = target;
+			equal(isMe({ role, username }), false);
+			equal(isMe({ id, username }), false);
+			equal(isMe({ id, role }), false);
+		});
+
+		it("returns false when the target has an extra property", () => {
+			const { id, role, username } = target;
+			equal(isMe({ id, role, username, extra: "something" }), false);
+		});
+	});
+});