AI disclaimer: also on the cards and the results

The note now rides along with the content itself, not only with the
generation screens and the chat composer:

- Under every card in the study feed and in the review, mistakes and exam
  sessions (the activity slide's last element — below the card, and below
  the feedback panel once answered).
- On the results slides: the study results screen and the shared session
  results (review, mistakes, exam).

Navigation surfaces (library, deck lists, chat history, settings) still
carry no note — it belongs to the moment of generation and to the card
being answered, not to browsing (README decision 50 updated).

The phase-2 grading check now scopes its placement (the disclaimer right
under the graded box) since the same text legitimately appears several
times on a session page; three new checks cover the feed, the results
slide and the exam (59 checks). SW -> freezmo-v40.

tests/phase2-test.mjs

@@ -119,7 +119,13 @@ const browser = await launchBrowser();
   await page.getByRole("button", { name: "Submit answer" }).click();
   await page.waitForTimeout(800);
   check("grading: AI feedback rendered", await page.getByText("Nice — scattering does the work.").isVisible());
-  check("grading: AI disclaimer under the feedback", await page.getByText("Freezmo uses AI and can make mistakes").isVisible());
+  // Scope it to the placement: the disclaimer directly under the graded box.
+  const feedbackDisclaimer = await page.evaluate(() => {
+    const feedback = [...document.querySelectorAll("p")].find((el) => el.textContent.includes("Nice — scattering does the work."));
+    const next = feedback?.closest("div")?.nextElementSibling;
+    return Boolean(next?.textContent?.includes("Freezmo uses AI"));
+  });
+  check("grading: AI disclaimer under the feedback", feedbackDisclaimer);
   await context.close();
 }
 
@@ -184,7 +190,6 @@ const browser = await launchBrowser();
     title: "Flashcards",
     activities: [
       { type: "flashcard", id: "f1", xp: 10, topic: "Sky", front: "Why is the sky blue?", back: "Rayleigh scattering.", explanation: "e" },
-      { type: "flashcard", id: "f2", xp: 10, topic: "Sky", front: "Second question", back: "Second answer", explanation: "e" },
     ],
   };
   await seed(page, { decks: [flashDeck] });
@@ -201,6 +206,10 @@ const browser = await launchBrowser();
 
   const atRest = await faces();
   check("flashcard: front face painted at rest", atRest.front === "visible" && atRest.back === "hidden", JSON.stringify(atRest));
+  check(
+    "feed: AI disclaimer under the card",
+    (await page.getByText("Freezmo uses AI and can make mistakes").count()) >= 1,
+  );
   await page.locator("button.group").first().click();
   await page.waitForTimeout(900);
   const flipped = await faces();
@@ -214,6 +223,19 @@ const browser = await launchBrowser();
   await page.waitForTimeout(1000);
   const back = await faces();
   check("flashcard: flipping back restores the question face", back.front === "visible" && back.back === "hidden", JSON.stringify(back));
+
+  // Answer it and check the results slide carries the disclaimer too.
+  await page.locator("button.group").first().click();
+  await page.waitForTimeout(800);
+  await page.getByRole("button", { name: "I knew it" }).click();
+  await page.waitForTimeout(500);
+  await page.getByRole("button", { name: "See results" }).click();
+  await page.waitForTimeout(800);
+  const resultsDisclaimer = await page.evaluate(() => {
+    const slides = [...document.querySelectorAll("[data-testid='study-feed'] section")];
+    return slides[slides.length - 1]?.textContent?.includes("Freezmo uses AI") ?? false;
+  });
+  check("results: AI disclaimer on the results slide", resultsDisclaimer);
   await context.close();
 }
 
@@ -281,6 +303,7 @@ const browser = await launchBrowser();
     (await page.getByText("What colour is a clear daytime sky?").count()) === 0 &&
       (await page.getByText("What makes the sky blue?").count()) >= 1,
   );
+  check("exam: AI disclaimer under the card", (await page.getByText("Freezmo uses AI and can make mistakes").count()) >= 1);
   await context.close();
 }