test(ui): cargo-routes counts the selection ring in the primitive total

The F4 selection ring is a real map primitive. The cargo-route flow has
the source planet selected, so the total primitive count is 8 (7 + the
ring circle), not 7; the line count (3) is unchanged.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

ui/frontend/tests/e2e/cargo-routes.spec.ts

@@ -457,8 +457,10 @@ test("cargo-routes flow: pick a destination, arrow appears, reload restores", as
 				lines: prims.filter((p) => p.kind === "line").length,
 			};
 		});
+	// `total` also counts the selected source planet's selection ring
+	// (F4 — one circle), so it is one more than the planet + line prims.
 	await expect.poll(debugLineCount, { timeout: 15000 }).toEqual({
-		total: 7,
+		total: 8,
 		lines: 3,
 	});