Implemented the analytics preconnect hint on the Page protocol in the Infrastructure package.

Packages/Infrastructure/Tests/Cases/Public/Protocols/PageTests.swift

@@ -131,10 +131,11 @@ struct PageTests {
         let html = StubPage().render()
 
         #expect(!html.contains("data-website-id"))
+        #expect(!html.contains(#"rel="preconnect""#))
     }
 
     @Test
-    func `renders the analytics tracker when provided`() {
+    func `renders the analytics tracker when provided`() throws {
         let html = StubPage(analytics: .init(
             scriptURL: "https://analytics.example.com/script",
             websiteID: "0000-website-id",
@@ -142,6 +143,12 @@ struct PageTests {
         )).render()
 
         #expect(html.contains(#"<script defer src="https://analytics.example.com/script" data-website-id="0000-website-id" data-domains="example.com" data-exclude-hash="true" data-do-not-track="true" data-performance="true"></script>"#))
+
+        // The preconnect hint warms the tracker origin's connection before the parser reaches the script tag.
+        let preconnect = try #require(html.range(of: #"<link rel="preconnect" href="https://analytics.example.com">"#))
+        let script = try #require(html.range(of: #"<script defer src="https://analytics.example.com/script""#))
+
+        #expect(preconnect.lowerBound < script.lowerBound)
     }
 
     @Test