Added language support to the Website service target.

Services/Website/Tests/Library/Cases/Internal/Pages/IndexPageTests.swift

@@ -39,6 +39,32 @@ struct IndexPageTests {
         #expect(!IndexPage(locale: .init(identifier: "en")).render().contains(#"rel="preload""#))
     }
 
+    @Test
+    func `renders no canonical URL until an origin is given`() {
+        #expect(!IndexPage(locale: .init(identifier: "en")).render().contains(#"rel="canonical""#))
+    }
+
+    @Test
+    func `renders the canonical URL as the bare origin for the default language`() {
+        // The root is the one path with no trailing slash for `TrailingSlashRedirectMiddleware` to strip.
+        let html = IndexPage(
+            locale: .init(identifier: "en"),
+            siteOrigin: "https://example.com"
+        ).render()
+
+        #expect(html.contains(#"<link rel="canonical" href="https://example.com">"#))
+    }
+
+    @Test
+    func `renders no language alternates for a single-language catalog`() {
+        // The template serves one language, so a set naming one edition would tell a crawler nothing.
+        #expect(Language.all.count == 1)
+        #expect(!IndexPage(
+            locale: .init(identifier: "en"),
+            siteOrigin: "https://example.com"
+        ).render().contains("hreflang"))
+    }
+
     @Test
     func `renders versioned asset URLs when given a version`() {
         let html = IndexPage(