Implemented phase 2 for the POC prototype in the Website service.

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

@@ -121,8 +121,71 @@ struct CataloguePagesTests {
         #expect(html.contains("<dt>Condition</dt>"))
     }
 
+    @Test
+    func `listing page opens its actions to a signed-in viewer`() {
+        let html = ListingPage(
+            listing: .stub(),
+            related: [],
+            viewer: .init(displayName: "Mara Visser")
+        ).render()
+
+        #expect(html.contains(#"href="/listing/nightward-1/buy""#))
+        #expect(html.contains(#"href="/listing/nightward-1/offer""#))
+        #expect(html.contains(#"href="/messages/new?listing=nightward-1""#))
+        #expect(html.contains(#"aria-label="Account of Mara Visser""#))
+        #expect(!html.contains("gate-note"))
+        #expect(html.contains(#"disabled title="Not part of the prototype">Save"#))
+    }
+
     // MARK: ShopPage tests
 
+    @Test
+    func `shop page opens its actions to a signed-in viewer`() {
+        let html = ShopPage(
+            shop: .stub(),
+            inventory: [],
+            matches: [],
+            parameters: .init(),
+            viewer: .init(displayName: "Mara Visser")
+        ).render()
+
+        #expect(html.contains(#"href="/messages/new?shop=kestrel-row-comics""#))
+        #expect(!html.contains("Both need a passkey sign-in"))
+        #expect(!html.contains("/sign-in?return="))
+    }
+
+    // MARK: SignInPage tests
+
+    @Test
+    func `sign-in page is bare, states the intent, and carries the return path`() {
+        let html = SignInPage(
+            returnPath: "/listing/nightward-1",
+            intent: "To buy Nightward #1"
+        ).render()
+
+        #expect(html.contains("To buy Nightward #1"))
+        #expect(html.contains(#"action="/sign-in" method="post""#))
+        #expect(html.contains(#"name="return" value="/listing/nightward-1""#))
+        #expect(html.contains(#"href="/listing/nightward-1" aria-label="Close and go back""#))
+        #expect(html.contains(#"content="noindex""#))
+        #expect(html.contains("/css/sign-in.css"))
+        #expect(!html.contains("site-header"))
+        #expect(!html.contains("site-footer"))
+        #expect(!html.contains("aria-invalid"))
+        #expect(!html.contains("style="))
+    }
+
+    @Test
+    func `sign-in page ties an error to the email field`() {
+        let html = SignInPage(
+            returnPath: "/",
+            error: "That doesn't look like an email address."
+        ).render()
+
+        #expect(html.contains(#"aria-invalid="true" aria-describedby="email-error""#))
+        #expect(html.contains(#"id="email-error">That doesn't look like an email address.</p>"#))
+    }
+
     @Test
     func `shop page counts its tabs from the whole inventory and lists the matches`() {
         let inventory = [