AI disclaimer: one shared component, shown where model output appears

"Freezmo uses AI and can make mistakes. Double-check important info."
(plus a natural informal Czech translation), rendered by a shared
AiDisclaimer so the copy, style and translations live in one place.

Placements — only where the model's words reach the screen:
- Chat: under the composer, below the context/model chips — always (chat
  is pure model output, so it also shows in the empty state).
- Make my homework: under the start CTA (desktop) and the mode cards'
  helper line (phone), plus once under the generated result for all three
  modes (make / check / guide).
- New deck wizard: under the summary helper (phone step 3) and the desktop
  CTA, next to Freeze my deck.
- AI grading (short answers): under the graded feedback; study, review and
  exam all share it.

Stored, already-generated content (deck page, study cards, explanations)
deliberately carries no note: the disclaimer belongs to the moment of
generation, not to browsing. Style: --text-subtle (documented at 5.6:1
light / 8.6:1 dark), 11.5px, centred, wraps to two lines at 360px, not
clickable, no icon.

Suites: chat (composer, phone + desktop), wizard (deck step 3 across
360/390 x en/cs x dark/light, homework start cards), phase3 (homework
trigger + result, phone + desktop), phase2 (stubbed grading feedback).
SW -> freezmo-v37. README: decision 50 + chat composer note.

Also fixes the deploy script's test instance: it now execs the server so
the cleanup kill reaps the real PID (the wrapper subshell left orphans
squatting on the test port — three from earlier sessions were found while
verifying this task), and the readiness poll checks the port serves the
NEW commit rather than just answering, so a leftover instance can never
be tested silently.

README.md

@@ -780,7 +780,8 @@ have a step explained without leaving the app.
   contains math; reasoning models' thinking is hidden behind a collapsible **Thinking** row and
   never mixed into the answer. Every answer offers copy / regenerate, the last question edit and
   resend. The composer auto-grows at 16px, sends on Enter on desktop (newline on phones), tracks
-  the on-screen keyboard through `visualViewport` and respects reduced motion.
+  the on-screen keyboard through `visualViewport`, respects reduced motion and keeps the shared AI
+  disclaimer under the chips.
 - **Privacy.** Notes text and conversations stay in this browser; nothing is stored server-side.
   The API key still only ever travels in the `x-ollama-key` header to Freezmo's own route for that
   single request.
@@ -1273,6 +1274,15 @@ Things I chose while building, with the reasoning:
     carries `min-w-0` so wide content truncates instead, and the chat suite asserts that the panel
     stays inside the rail and the main content starts after it, expanded and collapsed.
 
+50. **One AI disclaimer, only where the model's words are on screen.** A shared `AiDisclaimer`
+    (copy, style and translations in one place, `common.aiDisclaimer`) sits under the chat composer
+    — always, since chat is pure model output — next to the generation buttons of the homework and
+    deck wizards, under their results, and under AI grading feedback. Stored, already-generated
+    content (the deck page, study cards, explanations) deliberately carries no note: the disclaimer
+    belongs to the moment of generation, not to browsing, and the empty states stay clean. It is a
+    plain `--text-subtle` paragraph (documented at 5.6:1 light / 8.6:1 dark), centred, wrapping to
+    two lines on a 360 px phone — not clickable, not dismissable.
+
 36. **The mobile declutter pass reshapes, it doesn't fork.** Phones (≤639px) get a 3-step deck
     flow and a 2-step homework flow that share the exact state and handlers with the desktop
     cards (one `UploadScreen` / one `HomeworkInput`, two layouts switched by `useIsPhone()`);

components/AiDisclaimer.tsx

@@ -0,0 +1,22 @@
+"use client";
+
+import { useI18n } from "@/lib/i18n";
+import { cn } from "@/lib/utils";
+
+/**
+ * The faint "AI can make mistakes" note for surfaces that show model output:
+ * under the chat composer, next to the generation buttons and results of the
+ * homework and deck wizards, and under AI grading feedback. One component so
+ * the copy, the style and the translations stay in one place.
+ *
+ * --text-subtle is the muted helper token and is documented at 5.6:1 (light)
+ * and 8.6:1 (dark), so the note stays readable at this size.
+ */
+export function AiDisclaimer({ className }: { className?: string }) {
+  const { t } = useI18n();
+  return (
+    <p className={cn("text-center text-[11.5px] leading-snug text-[var(--text-subtle)]", className)}>
+      {t("common.aiDisclaimer")}
+    </p>
+  );
+}

components/UploadScreen.tsx

@@ -4,6 +4,7 @@ import { motion, useReducedMotion } from "framer-motion";
 import { useRouter } from "next/navigation";
 import { useCallback, useEffect, useMemo, useRef, useState, useSyncExternalStore } from "react";
 
+import { AiDisclaimer } from "@/components/AiDisclaimer";
 import { ApiError, generateDeck, type GenerateProgress } from "@/lib/client-api";
 import {
   DOCUMENT_ACCEPT_ATTR,
@@ -1002,6 +1003,7 @@ export function UploadScreen() {
               </dl>
 
               <p className="text-[12.5px] text-[var(--text-subtle)]">{phoneHelper}</p>
+              <AiDisclaimer />
             </div>
           ) : null}
         </motion.div>
@@ -1330,6 +1332,7 @@ export function UploadScreen() {
                 ? t("upload.ready")
                 : t("upload.addToStart")}
           </p>
+          <AiDisclaimer />
         </div>
       </div>
     </div>

components/activities/ShortAnswer.tsx

@@ -7,6 +7,7 @@ import { useI18n } from "@/lib/i18n";
 import { modelErrorCopy } from "@/lib/model-errors";
 import type { Activity } from "@/lib/schemas";
 import { cn } from "@/lib/utils";
+import { AiDisclaimer } from "@/components/AiDisclaimer";
 import { Button, Spinner } from "@/components/ui";
 import { ModelErrorActions } from "@/components/ModelErrorActions";
 
@@ -185,6 +186,8 @@ export function ShortAnswer({ activity, active, language, onAnswered, onNext, is
             ) : null}
           </div>
 
+          <AiDisclaimer />
+
           <FeedbackPanel
             correct={state.correct}
             explanation={activity.explanation}

components/chat/Composer.tsx

@@ -2,6 +2,7 @@
 
 import { useEffect, useRef } from "react";
 
+import { AiDisclaimer } from "@/components/AiDisclaimer";
 import { ChatIcon, LayersIcon, PaperclipIcon, SendIcon, StopIcon, XIcon } from "@/components/icons";
 import { Spinner } from "@/components/ui";
 import { useI18n } from "@/lib/i18n";
@@ -175,6 +176,8 @@ export function Composer({
           </span>
         ) : null}
       </div>
+
+      <AiDisclaimer className="mt-1.5" />
     </div>
   );
 }

components/homework/HomeworkInput.tsx

@@ -4,6 +4,7 @@ import { motion, useReducedMotion } from "framer-motion";
 import { useRouter } from "next/navigation";
 import { useEffect, useRef, useState } from "react";
 
+import { AiDisclaimer } from "@/components/AiDisclaimer";
 import { CameraIcon, CheckCircleIcon, FolderIcon, PlayIcon, PlusIcon, SparklesIcon } from "@/components/icons";
 import { Button } from "@/components/ui";
 import { WizardActionBar } from "@/components/WizardActionBar";
@@ -542,6 +543,7 @@ export function HomeworkInput({
               <p className="text-center text-[12px] text-[var(--text-subtle)]">
                 {online ? t("homework.phone.startHint") : t("offline.generate")}
               </p>
+              <AiDisclaimer />
             </div>
           ) : null}
         </motion.div>
@@ -779,6 +781,7 @@ export function HomeworkInput({
         <p className="text-center text-[12px] text-[var(--text-subtle)]">
           {canSubmit ? t("homework.source.ready") : t("homework.source.need")}
         </p>
+        <AiDisclaimer />
       </div>
 
       <HomeworkHistory records={history} onOpen={onOpen} onDelete={onDelete} />

components/homework/HomeworkScreen.tsx

@@ -3,6 +3,7 @@
 import { useCallback, useEffect, useMemo, useRef, useState, useSyncExternalStore } from "react";
 import { useRouter } from "next/navigation";
 
+import { AiDisclaimer } from "@/components/AiDisclaimer";
 import { documentsToText } from "@/lib/documents";
 import { ApiError, generateHomework, type HomeworkProgress } from "@/lib/client-api";
 import { setDeckSeed } from "@/lib/deck-seed";
@@ -227,37 +228,36 @@ export function HomeworkScreen({ initialRecordId }: { initialRecordId?: string }
   }
 
   if (view.kind === "record") {
-    if (view.record.mode === "make") {
-      return (
-        <HomeworkResult
-          record={view.record}
-          onAgain={() => again(view.record)}
-          onNew={newAssignment}
-          onToDeck={() => turnIntoDeck(view.record)}
-          againLoading={againLoading}
-        />
-      );
-    }
-    if (view.record.mode === "check") {
-      return (
-        <HomeworkCheckResult
-          record={view.record}
-          onAgain={() => again(view.record)}
-          onNew={newAssignment}
-          onToDeck={() => turnIntoDeck(view.record)}
-          againLoading={againLoading}
-        />
-      );
-    }
     return (
-      <HomeworkGuide
-        record={view.record}
-        onClose={() => setView({ kind: "start" })}
-        onAgain={() => again(view.record)}
-        onNew={newAssignment}
-        onToDeck={() => turnIntoDeck(view.record)}
-        againLoading={againLoading}
-      />
+      <div className="space-y-5">
+        {view.record.mode === "make" ? (
+          <HomeworkResult
+            record={view.record}
+            onAgain={() => again(view.record)}
+            onNew={newAssignment}
+            onToDeck={() => turnIntoDeck(view.record)}
+            againLoading={againLoading}
+          />
+        ) : view.record.mode === "check" ? (
+          <HomeworkCheckResult
+            record={view.record}
+            onAgain={() => again(view.record)}
+            onNew={newAssignment}
+            onToDeck={() => turnIntoDeck(view.record)}
+            againLoading={againLoading}
+          />
+        ) : (
+          <HomeworkGuide
+            record={view.record}
+            onClose={() => setView({ kind: "start" })}
+            onAgain={() => again(view.record)}
+            onNew={newAssignment}
+            onToDeck={() => turnIntoDeck(view.record)}
+            againLoading={againLoading}
+          />
+        )}
+        <AiDisclaimer />
+      </div>
     );
   }
 

lib/i18n-dict.ts

@@ -90,6 +90,7 @@ const en: Record<string, string> = {
   "common.less": "Less",
   "common.edit": "Edit",
   "common.stepOf": "{n} / {total}",
+  "common.aiDisclaimer": "Freezmo uses AI and can make mistakes. Double-check important info.",
 
   /* header ---------------------------------------------------------- */
   "header.home": "Freezmo home",
@@ -1023,6 +1024,7 @@ const cs: Record<string, string> = {
   "common.less": "Méně",
   "common.edit": "Upravit",
   "common.stepOf": "{n} / {total}",
+  "common.aiDisclaimer": "Freezmo používá AI a může se mýlit. Důležité informace si raději ověř.",
 
   /* header ---------------------------------------------------------- */
   "header.home": "Domů — Freezmo",

public/sw.js

@@ -9,7 +9,7 @@
  *
  * Bumping CACHE_VERSION is how a new deploy invalidates old assets.
  */
-const CACHE_VERSION = "freezmo-v36";
+const CACHE_VERSION = "freezmo-v37";
 const SHELL_CACHE = `${CACHE_VERSION}-shell`;
 const ASSET_CACHE = `${CACHE_VERSION}-assets`;
 

scripts/deploy.sh

@@ -126,14 +126,25 @@ if [[ "$RUN_TESTS" == "1" ]]; then
   # shellcheck disable=SC1090
   source "$PROD/shared/env.local"
   set +a
-  ( cd "$DIR/server" && PORT="$TEST_PORT" HOSTNAME=127.0.0.1 node server.js >"$DIR/test-server.log" 2>&1 ) &
+  # exec so $! is the server itself, not a wrapper subshell — otherwise the
+  # cleanup kill only reaps the subshell and the server survives as an orphan
+  # squatting on the test port.
+  ( cd "$DIR/server" && exec env PORT="$TEST_PORT" HOSTNAME=127.0.0.1 node server.js >"$DIR/test-server.log" 2>&1 ) &
   TEST_PID=$!
   cleanup_test() { kill "$TEST_PID" >/dev/null 2>&1 || true; wait "$TEST_PID" 2>/dev/null || true; }
   trap cleanup_test EXIT
 
+  # Ready means the port answers with THIS release's commit: a leftover
+  # instance from an earlier run would otherwise be tested silently.
   ready=0
   for _ in $(seq 1 60); do
-    if curl -fsS --max-time 2 "http://127.0.0.1:$TEST_PORT/api/healthz" >/dev/null 2>&1; then ready=1; break; fi
+    body="$(curl -fsS --max-time 2 "http://127.0.0.1:$TEST_PORT/api/healthz" 2>/dev/null || true)"
+    if [[ -n "$body" ]]; then
+      commit="$(printf '%s' "$body" | grep -o '"commit":"[^"]*"' | cut -d'"' -f4 || true)"
+      if [[ -n "$commit" && "${commit:0:7}" == "${TARGET:0:7}" ]]; then ready=1; break; fi
+      cat "$DIR/test-server.log" >&2 || true
+      fail "port $TEST_PORT answers with ${commit:0:7}, not $SHORT — is another instance still running?"
+    fi
     sleep 1
   done
   [[ "$ready" == "1" ]] || { cat "$DIR/test-server.log" >&2; fail "the new release did not start on :$TEST_PORT"; }

tests/chat-test.mjs

@@ -288,6 +288,7 @@ try {
     check("desktop: collapsed rail also stays inside and clear", collapsedRail !== null && collapsedRail.panelInside && !collapsedRail.overflowing && collapsedRail.contentClear);
     await desktop.page.getByRole("button", { name: "Expand sidebar" }).click();
     await desktop.page.waitForTimeout(400);
+    check("desktop: AI disclaimer under the composer", await desktop.page.getByText("Freezmo uses AI and can make mistakes").isVisible());
     await desktop.context.close();
 
     const phone = await makePage(browser);
@@ -308,6 +309,7 @@ try {
 
     /* 7. UI: streaming + markdown + math + sources ---------------------- */
     check("chat: empty state with suggestions", await phone.page.getByText("Ask your notes anything").isVisible());
+    check("chat: AI disclaimer under the composer (empty state too)", await phone.page.getByText("Freezmo uses AI and can make mistakes").isVisible());
     check("chat: deck suggestion present", (await phone.page.getByRole("button", { name: /Summarize my notes/ }).count()) === 1);
     const context = phone.page.locator(".chat-md").first();
     await phone.page.getByRole("button", { name: /Summarize my notes/ }).click();

tests/phase2-test.mjs

@@ -73,6 +73,56 @@ const browser = await launchBrowser();
   await context.close();
 }
 
+/* 1b. AI grading feedback carries the disclaimer (stubbed model call) - */
+{
+  const { context, page } = await makePage(browser);
+  const shortDeck = {
+    ...DECK,
+    id: "seed_short",
+    title: "Short answers",
+    // Two activities on purpose: with one, grading ends the session and the
+    // results screen replaces the graded view before the check runs.
+    activities: [
+      {
+        type: "short_answer",
+        id: "s1",
+        xp: 10,
+        topic: "Sky",
+        question: "Why is the sky blue?",
+        referenceAnswer: "Rayleigh scattering favours short wavelengths.",
+        keyPoints: ["scattering", "short wavelengths"],
+        explanation: "Small molecules scatter blue light more than red.",
+      },
+      {
+        type: "multiple_choice",
+        id: "s2",
+        xp: 10,
+        topic: "Sky",
+        question: "Which colour scatters most?",
+        options: ["Blue", "Red", "Green", "Yellow"],
+        correctIndex: 0,
+        explanation: "Short wavelengths scatter more.",
+      },
+    ],
+  };
+  await page.route("**/api/grade", (route) =>
+    route.fulfill({
+      status: 200,
+      contentType: "application/json",
+      body: JSON.stringify({ correct: true, feedback: "Nice — scattering does the work.", missing: [] }),
+    }),
+  );
+  await seed(page, { decks: [shortDeck] });
+  await page.goto(`${BASE}/deck/seed_short`, { waitUntil: "networkidle" });
+  await page.waitForTimeout(1000);
+  await page.locator("textarea").fill("Because small molecules scatter blue light more.");
+  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());
+  await context.close();
+}
+
 /* 2. SRS due → review session; stats screen -------------------------- */
 {
   const now = Date.now();

tests/phase3-test.mjs

@@ -131,6 +131,7 @@ try {
     await phone.page.locator("textarea").first().fill("Solve x + 2 = 4");
     await phone.page.getByRole("button", { name: "Next" }).click();
     await phone.page.waitForTimeout(400);
+    check("phone: AI disclaimer near the start cards", await phone.page.getByText("Freezmo uses AI and can make mistakes").isVisible());
     await phone.page.getByRole("button", { name: /Check my work/ }).click();
     await phone.page.waitForTimeout(400);
     check("phone: solution field revealed", await phone.page.locator("#homework-solution").isVisible());
@@ -141,6 +142,7 @@ try {
     check("phone: what's right listed", await phone.page.getByText("The setup is right.").isVisible());
     check("phone: what needs fixing listed", await phone.page.getByText("4 - 2 is 2, not 3.").isVisible());
     check("phone: corrected version shown", await phone.page.getByText("x = 4 - 2").isVisible());
+    check("phone: AI disclaimer on the result", await phone.page.getByText("Freezmo uses AI and can make mistakes").isVisible());
 
     await phone.page.getByRole("button", { name: "Shorter" }).click();
     await phone.page.waitForTimeout(1500);
@@ -167,6 +169,7 @@ try {
     await desktop.page.getByRole("button", { name: "Check my work", exact: true }).click();
     await desktop.page.waitForTimeout(2500);
     check("desktop: check result renders", await desktop.page.getByText("Corrected version").isVisible());
+    check("desktop: AI disclaimer on the result", await desktop.page.getByText("Freezmo uses AI and can make mistakes").isVisible());
     await desktop.context.close();
 
     const guide = await makePage(browser, { width: 390 });

tests/wizard-test.mjs

@@ -63,6 +63,10 @@ for (const viewport of [{ width: 390, height: 844 }, { width: 360, height: 740 }
         (await page.getByText(cs ? "Složka" : "Folder", { exact: true }).count()) >= 1,
     );
     check(`${label}: Freeze enabled with content`, await page.getByRole("button", { name: cs ? "Zmrazit sadu" : "Freeze my deck" }).isEnabled());
+    check(
+      `${label}: AI disclaimer near the freeze button`,
+      await page.getByText(cs ? "Freezmo používá AI a může se mýlit" : "Freezmo uses AI and can make mistakes").isVisible(),
+    );
     await page.getByRole("button", { name: cs ? "Upravit" : "Edit" }).first().click();
     await page.waitForTimeout(400);
     check(`${label}: Files Edit jumps to step 1`, await page.getByText("1 / 3").isVisible());
@@ -158,6 +162,7 @@ for (const viewport of [{ width: 390, height: 844 }, { width: 360, height: 740 }
   await page.locator("textarea").first().fill("Solve x + 2 = 4");
   await page.getByRole("button", { name: "Next" }).click();
   await page.waitForTimeout(300);
+  check("homework: AI disclaimer near the start cards", await page.getByText("Freezmo uses AI and can make mistakes").isVisible());
   await page.getByRole("button", { name: /Just make it/ }).click();
   await page.waitForTimeout(800);
   check("loading: homework run hides the mode switch", (await page.getByRole("group", { name: "Study deck or homework" }).count()) === 0);