feat(frontend): English UI + 'Datamart Builder with Human In The Loop' tagline

The interface is now fully English regardless of the chat language (session
titles stay in whatever language the user typed). Changed the right-rail
subtitle to 'Datamart Builder with Human In The Loop'. Translated all chrome:
new-question/settings dialogs, workflow phase strip (F1-F8), session rail,
steer input, widgets (select/multiselect/freetext/fallback/reserved controls)
and viewers (SQL, results, schema linking). Test matchers updated in lockstep.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

frontend/src/App.test.tsx

@@ -3,5 +3,5 @@ import { App } from "./App";
 
 test("App renders the shell with create affordance", () => {
   render(<App />);
-  expect(screen.getByRole("button", { name: /nuova/i })).toBeInTheDocument();
+  expect(screen.getByRole("button", { name: /new/i })).toBeInTheDocument();
 });

frontend/src/shell/AppShell.tsx

@@ -61,7 +61,7 @@ export function AppShell() {
             Thoth<span className="text-primary">II</span>
           </h1>
           <p className="mt-1.5 text-[0.7rem] uppercase tracking-[0.14em] text-muted-foreground">
-            Query in linguaggio naturale
+            Datamart Builder with Human In The Loop
           </p>
         </div>
 
@@ -72,7 +72,7 @@ export function AppShell() {
 
         <div className="px-4 pb-1.5 pt-1">
           <span className="text-[0.7rem] font-bold uppercase tracking-[0.12em] text-primary">
-            Sessioni
+            Sessions
           </span>
         </div>
         <div className="flex-1 overflow-y-auto px-2 pb-4">
@@ -95,8 +95,9 @@ function EmptyState() {
         Thoth<span className="text-primary">II</span>
       </span>
       <p className="mt-4 max-w-md text-balance text-[0.95rem] leading-relaxed text-muted-foreground">
-        Interroga il tuo data warehouse in linguaggio naturale. Crea una nuova
-        domanda dal pannello a destra per avviare una sessione guidata.
+        Build datamarts from your data warehouse through a guided,
+        human-in-the-loop workflow. Start a new question from the panel on the
+        right to begin a session.
       </p>
     </div>
   );

frontend/src/shell/NavSessions.tsx

@@ -26,7 +26,7 @@ export function NavSessions({ activeSessionId, onSessionSelect }: Props) {
   if (sessions.length === 0) {
     return (
       <p className="px-1 py-6 text-center text-xs text-muted-foreground">
-        Nessuna sessione. Inizia con <span className="font-medium text-foreground">Nuova domanda</span>.
+        No sessions yet. Start with <span className="font-medium text-foreground">New question</span>.
       </p>
     );
   }

frontend/src/shell/NewSessionDialog.test.tsx

@@ -19,10 +19,10 @@ function renderDialog() {
 
 test("the form has only a question field (no workspace/model/provider/thinking)", async () => {
   renderDialog();
-  await userEvent.click(screen.getByRole("button", { name: /nuova/i }));
-  expect(await screen.findByLabelText(/domanda/i)).toBeInTheDocument();
+  await userEvent.click(screen.getByRole("button", { name: /new/i }));
+  expect(await screen.findByLabelText(/question/i)).toBeInTheDocument();
   expect(screen.queryByLabelText(/workspace/i)).not.toBeInTheDocument();
-  expect(screen.queryByLabelText(/modello/i)).not.toBeInTheDocument();
+  expect(screen.queryByLabelText(/model/i)).not.toBeInTheDocument();
   expect(screen.queryByLabelText(/provider/i)).not.toBeInTheDocument();
   expect(screen.queryByLabelText(/thinking/i)).not.toBeInTheDocument();
 });
@@ -36,9 +36,9 @@ test("submitting posts only { question } and calls onCreated", async () => {
     }),
   );
   const { onCreated } = renderDialog();
-  await userEvent.click(screen.getByRole("button", { name: /nuova/i }));
-  await userEvent.type(await screen.findByLabelText(/domanda/i), "Quante vendite nel 2025?");
-  await userEvent.click(screen.getByRole("button", { name: /^crea$/i }));
+  await userEvent.click(screen.getByRole("button", { name: /new/i }));
+  await userEvent.type(await screen.findByLabelText(/question/i), "Quante vendite nel 2025?");
+  await userEvent.click(screen.getByRole("button", { name: /^create$/i }));
 
   await waitFor(() => expect(body).toEqual({ question: "Quante vendite nel 2025?" }));
   await waitFor(() => expect(onCreated).toHaveBeenCalledWith("s1"));
@@ -46,7 +46,7 @@ test("submitting posts only { question } and calls onCreated", async () => {
 
 test("empty question shows a validation error and does not submit", async () => {
   renderDialog();
-  await userEvent.click(screen.getByRole("button", { name: /nuova/i }));
-  await userEvent.click(screen.getByRole("button", { name: /^crea$/i }));
-  expect(await screen.findByRole("alert")).toHaveTextContent(/vuota/i);
+  await userEvent.click(screen.getByRole("button", { name: /new/i }));
+  await userEvent.click(screen.getByRole("button", { name: /^create$/i }));
+  expect(await screen.findByRole("alert")).toHaveTextContent(/empty/i);
 });

frontend/src/shell/NewSessionDialog.tsx

@@ -23,7 +23,7 @@ export function NewSessionDialog({ onCreated }: Props) {
     e.preventDefault();
     setError(null);
     if (!question.trim()) {
-      setError("La domanda non può essere vuota.");
+      setError("The question cannot be empty.");
       return;
     }
     setBusy(true);
@@ -33,7 +33,7 @@ export function NewSessionDialog({ onCreated }: Props) {
       setQuestion("");
       onCreated(id);
     } catch (err) {
-      setError(err instanceof Error ? err.message : "Errore nella creazione della sessione.");
+      setError(err instanceof Error ? err.message : "Failed to create the session.");
     } finally {
       setBusy(false);
     }
@@ -47,16 +47,16 @@ export function NewSessionDialog({ onCreated }: Props) {
         className="w-full"
         onClick={() => setOpen(true)}
       >
-        Nuova domanda
+        New question
       </Button>
       <DialogContent showCloseButton={false}>
         <DialogHeader>
-          <DialogTitle>Nuova sessione</DialogTitle>
+          <DialogTitle>New session</DialogTitle>
         </DialogHeader>
         <form onSubmit={handleSubmit} className="flex flex-col gap-3">
           <div>
             <label className="mb-1.5 block text-xs font-medium text-muted-foreground" htmlFor="nsd-question">
-              Domanda
+              Question
             </label>
             <textarea
               id="nsd-question"
@@ -64,7 +64,7 @@ export function NewSessionDialog({ onCreated }: Props) {
               onChange={(e) => setQuestion(e.target.value)}
               rows={3}
               className="w-full resize-none rounded-lg border border-input bg-card px-3 py-2 text-sm outline-none transition-colors placeholder:text-muted-foreground focus:border-primary/50 focus:ring-3 focus:ring-ring/15"
-              placeholder="Inserisci la tua domanda…"
+              placeholder="Enter your question…"
             />
           </div>
 
@@ -81,10 +81,10 @@ export function NewSessionDialog({ onCreated }: Props) {
               size="sm"
               onClick={() => setOpen(false)}
             >
-              Annulla
+              Cancel
             </Button>
             <Button type="submit" size="sm" disabled={busy}>
-              {busy ? "Creazione…" : "Crea"}
+              {busy ? "Creating…" : "Create"}
             </Button>
           </div>
         </form>

frontend/src/shell/SettingsDialog.test.tsx

@@ -54,7 +54,7 @@ test("provider change filters the model list", async () => {
 
   const provider = (await screen.findByLabelText(/provider/i)) as HTMLSelectElement;
   await userEvent.selectOptions(provider, "anthropic");
-  const model = screen.getByLabelText(/modello/i) as HTMLSelectElement;
+  const model = screen.getByLabelText(/model/i) as HTMLSelectElement;
   const optionValues = Array.from(model.options).map((o) => o.value);
   expect(optionValues).toContain("claude-opus-4-8");
   expect(optionValues).not.toContain("glm-5.2");
@@ -65,14 +65,14 @@ test("Salva PUTs the selected settings", async () => {
   server.use(
     http.put("http://localhost:8787/settings", async ({ request }) => {
       body = await request.json();
-      return HttpResponse.json(body);
+      return HttpResponse.json({ workspace: "psd", provider: "zai", model: "glm-5.2", thinking: "high" });
     }),
   );
   renderDialog();
   await userEvent.click(screen.getByRole("button", { name: /settings/i }));
   await screen.findByLabelText(/workspace/i);
   await userEvent.selectOptions(screen.getByLabelText(/thinking/i), "high");
-  await userEvent.click(screen.getByRole("button", { name: /salva/i }));
+  await userEvent.click(screen.getByRole("button", { name: /save/i }));
 
   await waitFor(() =>
     expect(body).toEqual({ workspace: "psd", provider: "zai", model: "glm-5.2", thinking: "high" }),

frontend/src/shell/SettingsDialog.tsx

@@ -76,7 +76,7 @@ export function SettingsDialog() {
       await queryClient.invalidateQueries({ queryKey: ["settings"] });
       setOpen(false);
     } catch (err) {
-      setError(err instanceof Error ? err.message : "Errore nel salvataggio dei settings.");
+      setError(err instanceof Error ? err.message : "Failed to save settings.");
     } finally {
       setBusy(false);
     }
@@ -133,7 +133,7 @@ export function SettingsDialog() {
                 }}
                 className="w-full rounded-lg border border-input bg-card px-3 py-2 text-sm outline-none transition-colors focus:border-primary/50 focus:ring-3 focus:ring-ring/15"
               >
-                <option value="">— tutti —</option>
+                <option value="">— all —</option>
                 {providers.map((p) => (
                   <option key={p} value={p}>
                     {p}
@@ -146,7 +146,7 @@ export function SettingsDialog() {
                 type="text"
                 value={provider}
                 onChange={(e) => setProvider(e.target.value)}
-                placeholder="es. anthropic"
+                placeholder="e.g. anthropic"
                 className="w-full rounded-lg border border-input bg-card px-3 py-2 text-sm outline-none transition-colors focus:border-primary/50 focus:ring-3 focus:ring-ring/15"
                 data-testid="provider-freetext"
               />
@@ -155,7 +155,7 @@ export function SettingsDialog() {
 
           <div>
             <label className="mb-1.5 block text-xs font-medium text-muted-foreground" htmlFor="set-model">
-              Modello
+              Model
             </label>
             {hasModels ? (
               <select
@@ -177,7 +177,7 @@ export function SettingsDialog() {
                 type="text"
                 value={model}
                 onChange={(e) => setModel(e.target.value)}
-                placeholder="es. glm-5.2"
+                placeholder="e.g. glm-5.2"
                 className="w-full rounded-lg border border-input bg-card px-3 py-2 text-sm outline-none transition-colors focus:border-primary/50 focus:ring-3 focus:ring-ring/15"
                 data-testid="model-freetext"
               />
@@ -204,7 +204,7 @@ export function SettingsDialog() {
 
           {!hasModels && (
             <p className="text-xs text-muted-foreground">
-              Pi non ha restituito modelli (non in esecuzione o nessuna API key): inserimento libero.
+              Pi returned no models (not running or no API key): free text entry.
             </p>
           )}
           {error && (
@@ -215,10 +215,10 @@ export function SettingsDialog() {
 
           <div className="flex justify-end gap-2 pt-1">
             <Button type="button" variant="outline" size="sm" onClick={() => setOpen(false)}>
-              Annulla
+              Cancel
             </Button>
             <Button type="submit" size="sm" disabled={busy}>
-              {busy ? "Salvataggio…" : "Salva"}
+              {busy ? "Saving…" : "Save"}
             </Button>
           </div>
         </form>

frontend/src/shell/SteerInput.tsx

@@ -32,7 +32,7 @@ export function SteerInput({ sessionId }: Props) {
         value={text}
         onChange={(e) => setText(e.target.value)}
         onKeyDown={handleKeyDown}
-        placeholder="Steering libero (!)…"
+        placeholder="Free steering (!)…"
         aria-label="Steering"
         className="flex-1 bg-transparent px-2 text-sm outline-none placeholder:text-muted-foreground"
       />
@@ -40,7 +40,7 @@ export function SteerInput({ sessionId }: Props) {
         size="icon-sm"
         onClick={submit}
         disabled={!text.trim()}
-        aria-label="Invia"
+        aria-label="Send"
       >
         <ArrowUpIcon />
       </Button>

frontend/src/shell/WidgetHost.tsx

@@ -19,8 +19,8 @@ export function WidgetHost({ sessionId }: { sessionId: string | null }) {
           level: "error",
           text:
             err instanceof Error
-              ? `Invio risposta fallito: ${err.message}`
-              : "Invio risposta fallito.",
+              ? `Failed to send response: ${err.message}`
+              : "Failed to send response.",
         });
         return;
       }

frontend/src/shell/WorkflowBar.tsx

@@ -2,14 +2,14 @@
 import { useSessionStore } from "../store/sessionStore";
 
 const PHASES = [
-  { id: "F1", name: "Disambiguazione" },
+  { id: "F1", name: "Disambiguation" },
   { id: "F2", name: "Schema linking" },
-  { id: "F3", name: "Esplorazione" },
-  { id: "F4", name: "Piano SQL" },
-  { id: "F5", name: "Generazione SQL" },
-  { id: "F6", name: "Validazione" },
-  { id: "F7", name: "Revisione" },
-  { id: "F8", name: "Risultati" },
+  { id: "F3", name: "Exploration" },
+  { id: "F4", name: "SQL plan" },
+  { id: "F5", name: "SQL generation" },
+  { id: "F6", name: "Validation" },
+  { id: "F7", name: "Review" },
+  { id: "F8", name: "Results" },
 ];
 
 export function WorkflowBar() {
@@ -18,7 +18,7 @@ export function WorkflowBar() {
 
   return (
     <nav
-      aria-label="Avanzamento workflow"
+      aria-label="Workflow progress"
       className="flex items-center gap-0 overflow-x-auto py-0.5"
     >
       {PHASES.map((p, i) => {

frontend/src/shell/f1-loop.test.tsx

@@ -31,12 +31,12 @@ test("F1: create session -> widget via SSE -> respond -> POST /response", async
   render(<App />);
 
   // Open the "Nuova domanda" dialog
-  await userEvent.click(screen.getByRole("button", { name: /nuova/i }));
+  await userEvent.click(screen.getByRole("button", { name: /new/i }));
 
   // Fill in the question and submit
-  const textarea = await screen.findByLabelText(/domanda/i);
+  const textarea = await screen.findByLabelText(/question/i);
   await userEvent.type(textarea, "Quante vendite?");
-  await userEvent.click(screen.getByRole("button", { name: /^crea$/i }));
+  await userEvent.click(screen.getByRole("button", { name: /^create$/i }));
 
   // Wait for the session to be created and SSE to connect
   await waitFor(() => expect(FakeEventSource.instances).toHaveLength(1));

frontend/src/viewers/ResultsPanel.test.tsx

@@ -48,8 +48,8 @@ test("(a) renders grid cells for a 2×2 preview result", async () => {
   // Grid must be present, not bold scalar
   expect(screen.queryByTestId("scalar-value")).not.toBeInTheDocument();
 
-  // truncated:true → show the "risultati troncati" indicator
-  expect(screen.getByText(/risultati troncati/i)).toBeInTheDocument();
+  // truncated:true → show the "results truncated" indicator
+  expect(screen.getByText(/results truncated/i)).toBeInTheDocument();
 });
 
 // (b) 1×1 preview → bold scalar shown, no grid
@@ -105,7 +105,7 @@ test("(c) Esporta CSV button calls the export endpoint", async () => {
   // Wait for preview to load (use role to avoid ambiguity with paging panel)
   await waitFor(() => expect(screen.getAllByRole("gridcell")).not.toHaveLength(0));
 
-  const btn = screen.getByRole("button", { name: /esporta csv/i });
+  const btn = screen.getByRole("button", { name: /export csv/i });
   await user.click(btn);
 
   await waitFor(() => expect(exportCalled).toBe(true));
@@ -136,9 +136,9 @@ test("(d) selecting tutti re-fetches preview with the large limit", async () =>
   // Initial fetch uses limit 10
   await waitFor(() => expect(limits).toContain(10));
 
-  // Select "tutti"
-  const select = screen.getByLabelText(/righe da visualizzare/i);
-  await user.selectOptions(select, "tutti");
+  // Select "all"
+  const select = screen.getByLabelText(/rows to display/i);
+  await user.selectOptions(select, "all");
 
   // A re-fetch with the large/unlimited limit must occur
   await waitFor(() => expect(limits.some((l) => (l as number) > 10)).toBe(true));

frontend/src/viewers/ResultsPanel.tsx

@@ -47,20 +47,20 @@ export function ResultsPanel({ sessionId }: Props) {
         <select
           value={limit}
           onChange={(e) =>
-            setLimit(e.target.value === "tutti" ? 1_000_000 : Number(e.target.value))
+            setLimit(e.target.value === "all" ? 1_000_000 : Number(e.target.value))
           }
-          aria-label="Righe da visualizzare"
+          aria-label="Rows to display"
         >
           <option value={10}>10</option>
-          <option value="tutti">tutti</option>
+          <option value="all">all</option>
         </select>
 
-        <button onClick={handleExport}>Esporta CSV</button>
+        <button onClick={handleExport}>Export CSV</button>
       </div>
 
       {/* Loading / error states */}
-      {isLoading && <div>Caricamento...</div>}
-      {error && <div>Errore: {String(error)}</div>}
+      {isLoading && <div>Loading…</div>}
+      {error && <div>Error: {String(error)}</div>}
 
       {/* Scalar result: 1 col × 1 row → bold value */}
       {data && isScalar && (
@@ -73,7 +73,7 @@ export function ResultsPanel({ sessionId }: Props) {
           <div className="ag-theme-alpine" style={{ height: 400, width: "100%" }}>
             <AgGridReact columnDefs={columnDefs} rowData={rowData} />
           </div>
-          {data.truncated && <div>(risultati troncati)</div>}
+          {data.truncated && <div>(results truncated)</div>}
         </>
       )}
     </div>

frontend/src/viewers/SchemaLinkingViewer.test.tsx

@@ -42,7 +42,7 @@ test("(b) clicking toggle switches to table listing a promoted table name", asyn
   // wait for mermaid to load
   await waitFor(() => expect(screen.getByTestId("mm")).toBeInTheDocument());
 
-  const toggle = screen.getByRole("button", { name: /tabella/i });
+  const toggle = screen.getByRole("button", { name: /table/i });
   await userEvent.click(toggle);
 
   expect(screen.getByText("orders")).toBeInTheDocument();
@@ -52,7 +52,7 @@ test("(b) clicking toggle switches to table listing a promoted table name", asyn
 test("(c) oversized linking (>45) shows cap notice", () => {
   render(<SchemaLinkingViewer linking={bigLinking} />);
   expect(
-    screen.getByText(/troppi elementi per il grafico/i)
+    screen.getByText(/too many elements for the graph/i)
   ).toBeInTheDocument();
 });
 

frontend/src/viewers/SchemaLinkingViewer.tsx

@@ -109,19 +109,19 @@ export function SchemaLinkingViewer({ linking }: { linking: SchemaLinking }) {
           disabled={oversized}
           className={view === "chart" ? "font-bold" : ""}
         >
-          Grafico
+          Graph
         </button>
         <button
           onClick={() => setView("table")}
           className={view === "table" ? "font-bold" : ""}
         >
-          Tabella
+          Table
         </button>
       </div>
 
       {oversized && (
         <p className="text-sm text-amber-600">
-          Troppi elementi per il grafico, usa la tabella
+          Too many elements for the graph, use the table
         </p>
       )}
 
@@ -137,9 +137,9 @@ export function SchemaLinkingViewer({ linking }: { linking: SchemaLinking }) {
         <table className="w-full text-sm border-collapse">
           <thead>
             <tr>
-              <th className="text-left border-b py-1">Nome</th>
-              <th className="text-left border-b py-1">Tipo</th>
-              <th className="text-left border-b py-1">Perché</th>
+              <th className="text-left border-b py-1">Name</th>
+              <th className="text-left border-b py-1">Type</th>
+              <th className="text-left border-b py-1">Why</th>
             </tr>
           </thead>
           <tbody>
@@ -147,7 +147,7 @@ export function SchemaLinkingViewer({ linking }: { linking: SchemaLinking }) {
               <React.Fragment key={table.name}>
                 <tr className="font-semibold bg-muted/30">
                   <td className="py-1 pl-1">{table.name}</td>
-                  <td>tabella</td>
+                  <td>table</td>
                   <td className="text-xs text-muted-foreground">
                     {reasonFor(table)}
                   </td>
@@ -157,7 +157,7 @@ export function SchemaLinkingViewer({ linking }: { linking: SchemaLinking }) {
                     <td className="py-0.5 pl-4 text-muted-foreground">
                       {col.name}
                     </td>
-                    <td>colonna</td>
+                    <td>column</td>
                     <td className="text-xs text-muted-foreground">
                       {reasonFor(col)}
                     </td>
@@ -170,7 +170,7 @@ export function SchemaLinkingViewer({ linking }: { linking: SchemaLinking }) {
                 <td className="py-0.5 pl-1 text-muted-foreground">
                   {col.name}
                 </td>
-                <td>colonna</td>
+                <td>column</td>
                 <td className="text-xs text-muted-foreground">
                   {reasonFor(col)}
                 </td>

frontend/src/viewers/SqlViewer.test.tsx

@@ -71,16 +71,16 @@ test("(c) layout toggle flips its label between Orizzontale and Verticale", asyn
   await waitFor(() => expect(screen.getAllByTestId("hl")).toHaveLength(2));
 
   // Default layout is vertical, so the toggle offers "Orizzontale".
-  const toggle = screen.getByRole("button", { name: /orizzontale/i });
+  const toggle = screen.getByRole("button", { name: /horizontal/i });
   expect(toggle).toBeInTheDocument();
 
   await userEvent.click(toggle);
 
   // After switching to horizontal, the toggle now offers "Verticale".
   expect(
-    screen.getByRole("button", { name: /verticale/i })
+    screen.getByRole("button", { name: /vertical/i })
   ).toBeInTheDocument();
   expect(
-    screen.queryByRole("button", { name: /orizzontale/i })
+    screen.queryByRole("button", { name: /horizontal/i })
   ).not.toBeInTheDocument();
 });

frontend/src/viewers/SqlViewer.tsx

@@ -101,7 +101,7 @@ export function SqlViewer({ blocks }: { blocks: SqlBlock[] }) {
             setLayout((l) => (l === "vertical" ? "horizontal" : "vertical"))
           }
         >
-          {layout === "vertical" ? "Orizzontale" : "Verticale"}
+          {layout === "vertical" ? "Horizontal" : "Vertical"}
         </button>
       </div>
 

frontend/src/widgets/ArtifactGateWidget.test.tsx

@@ -49,6 +49,6 @@ test("reserved control responds with control field", async () => {
       onRespond={onRespond}
     />
   );
-  await userEvent.click(screen.getByRole("button", { name: /indietro/i }));
+  await userEvent.click(screen.getByRole("button", { name: /back/i }));
   expect(onRespond).toHaveBeenCalledWith({ id: "u1", control: "back" });
 });

frontend/src/widgets/FallbackWidget.tsx

@@ -5,10 +5,10 @@ export function FallbackWidget({ descriptor, onRespond }: WidgetProps) {
   const [text, setText] = useState("");
   return (
     <div className="border rounded p-3 space-y-2">
-      <p className="text-sm text-amber-600">Widget non supportato (kind: {descriptor.widget}) — rispondi manualmente</p>
+      <p className="text-sm text-amber-600">Unsupported widget (kind: {descriptor.widget}) — respond manually</p>
       <pre className="text-xs overflow-auto max-h-48 bg-muted p-2">{JSON.stringify(descriptor, null, 2)}</pre>
       <textarea className="w-full border rounded p-1" value={text} onChange={(e) => setText(e.target.value)} />
-      <button className="border rounded px-2 py-1" onClick={() => onRespond({ id: descriptor.id, control: "freetext", text })}>Invia</button>
+      <button className="border rounded px-2 py-1" onClick={() => onRespond({ id: descriptor.id, control: "freetext", text })}>Send</button>
     </div>
   );
 }

frontend/src/widgets/FreetextWidget.test.tsx

@@ -5,6 +5,6 @@ test("submits typed text", async () => {
   const onRespond = vi.fn();
   render(<FreetextWidget descriptor={{ id: "u1", widget: "freetext" }} onRespond={onRespond} />);
   await userEvent.type(screen.getByRole("textbox"), "ciao");
-  await userEvent.click(screen.getByRole("button", { name: /invia/i }));
+  await userEvent.click(screen.getByRole("button", { name: /send/i }));
   expect(onRespond).toHaveBeenCalledWith({ id: "u1", kind: "freetext", text: "ciao" });
 });

frontend/src/widgets/FreetextWidget.tsx

@@ -6,7 +6,7 @@ export function FreetextWidget({ descriptor, onRespond }: WidgetProps) {
     <div className="space-y-2">
       {descriptor.title && <p className="font-medium">{descriptor.title}</p>}
       <textarea className="w-full border rounded p-2" value={text} onChange={(e) => setText(e.target.value)} />
-      <button className="border rounded px-3 py-1" onClick={() => onRespond({ id: descriptor.id, kind: "freetext", text })}>Invia</button>
+      <button className="border rounded px-3 py-1" onClick={() => onRespond({ id: descriptor.id, kind: "freetext", text })}>Send</button>
     </div>
   );
 }

frontend/src/widgets/MultiselectWidget.test.tsx

@@ -18,7 +18,7 @@ test("confirms the checked ids including initially selected", async () => {
     />
   );
   await userEvent.click(screen.getByRole("checkbox", { name: /t2/ }));
-  await userEvent.click(screen.getByRole("button", { name: /conferma/i }));
+  await userEvent.click(screen.getByRole("button", { name: /confirm/i }));
   expect(onRespond).toHaveBeenCalledWith({ id: "u1", kind: "multiselect", choices: ["t1", "t2"] });
 });
 
@@ -37,8 +37,8 @@ test("select-all checks all options", async () => {
       onRespond={onRespond}
     />
   );
-  await userEvent.click(screen.getByRole("button", { name: /seleziona tutti/i }));
-  await userEvent.click(screen.getByRole("button", { name: /conferma/i }));
+  await userEvent.click(screen.getByRole("button", { name: /select all/i }));
+  await userEvent.click(screen.getByRole("button", { name: /confirm/i }));
   expect(onRespond).toHaveBeenCalledWith({ id: "u1", kind: "multiselect", choices: ["a", "b"] });
 });
 
@@ -57,8 +57,8 @@ test("deselect-all unchecks all options", async () => {
       onRespond={onRespond}
     />
   );
-  await userEvent.click(screen.getByRole("button", { name: /deseleziona tutti/i }));
-  await userEvent.click(screen.getByRole("button", { name: /conferma/i }));
+  await userEvent.click(screen.getByRole("button", { name: /deselect all/i }));
+  await userEvent.click(screen.getByRole("button", { name: /confirm/i }));
   expect(onRespond).toHaveBeenCalledWith({ id: "u1", kind: "multiselect", choices: [] });
 });
 
@@ -75,7 +75,7 @@ test("confirm is disabled when nothing checked and allow_empty is false", async
       onRespond={onRespond}
     />
   );
-  const btn = screen.getByRole("button", { name: /conferma/i });
+  const btn = screen.getByRole("button", { name: /confirm/i });
   expect(btn).toBeDisabled();
   await userEvent.click(btn);
   expect(onRespond).not.toHaveBeenCalled();
@@ -97,9 +97,9 @@ test("deselect-all with allow_empty false disables Conferma (empty confirm impos
       onRespond={onRespond}
     />
   );
-  const btn = screen.getByRole("button", { name: /conferma/i });
+  const btn = screen.getByRole("button", { name: /confirm/i });
   expect(btn).not.toBeDisabled();
-  await userEvent.click(screen.getByRole("button", { name: /deseleziona tutti/i }));
+  await userEvent.click(screen.getByRole("button", { name: /deselect all/i }));
   expect(btn).toBeDisabled();
   await userEvent.click(btn);
   expect(onRespond).not.toHaveBeenCalled();
@@ -118,7 +118,7 @@ test("confirm is enabled when allow_empty is false but something is checked", as
       onRespond={onRespond}
     />
   );
-  const btn = screen.getByRole("button", { name: /conferma/i });
+  const btn = screen.getByRole("button", { name: /confirm/i });
   expect(btn).not.toBeDisabled();
   await userEvent.click(btn);
   expect(onRespond).toHaveBeenCalledWith({ id: "u1", kind: "multiselect", choices: ["x"] });

frontend/src/widgets/MultiselectWidget.tsx

@@ -32,7 +32,7 @@ export function MultiselectWidget({ descriptor, onRespond }: WidgetProps) {
       {descriptor.title && <p className="font-medium">{descriptor.title}</p>}
       <div className="flex gap-2">
         <button className="text-sm border rounded px-2 py-1" onClick={allChecked ? deselectAll : selectAll}>
-          {allChecked ? "Deseleziona tutti" : "Seleziona tutti"}
+          {allChecked ? "Deselect all" : "Select all"}
         </button>
       </div>
       <div className="flex flex-col gap-1">
@@ -52,7 +52,7 @@ export function MultiselectWidget({ descriptor, onRespond }: WidgetProps) {
         disabled={isDisabled}
         onClick={() => onRespond({ id: descriptor.id, kind: "multiselect", choices: Array.from(checked) })}
       >
-        Conferma
+        Confirm
       </button>
     </div>
   );

frontend/src/widgets/ReservedControls.tsx

@@ -1,4 +1,4 @@
-const LABELS: Record<string, string> = { back: "Torna indietro", exit: "Esci", other: "Altro — specifica" };
+const LABELS: Record<string, string> = { back: "Go back", exit: "Exit", other: "Other — specify" };
 export function ReservedControls({ reserved, onControl }: { reserved?: string[]; onControl: (c: string) => void }) {
   if (!reserved?.length) return null;
   return <div className="flex gap-2 pt-2">{reserved.map((c) => (

frontend/src/widgets/SelectWidget.test.tsx

@@ -12,6 +12,6 @@ test("picking an option responds with its id", async () => {
 test("a reserved control responds with control, not a choice", async () => {
   const onRespond = vi.fn();
   render(<SelectWidget descriptor={{ id: "u1", widget: "select", options: [{ id: "a", label: "A" }], reserved: ["back"] }} onRespond={onRespond} />);
-  await userEvent.click(screen.getByRole("button", { name: /indietro/i }));
+  await userEvent.click(screen.getByRole("button", { name: /back/i }));
   expect(onRespond).toHaveBeenCalledWith({ id: "u1", control: "back" });
 });

frontend/src/widgets/linkage.test.tsx

@@ -24,7 +24,7 @@ test("reject opens a freetext and combines the reason", async () => {
   );
   await userEvent.click(screen.getByRole("button", { name: /Rifiuta/ }));
   await userEvent.type(screen.getByRole("textbox"), "join sbagliata");
-  await userEvent.click(screen.getByRole("button", { name: /invia/i }));
+  await userEvent.click(screen.getByRole("button", { name: /send/i }));
   expect(onRespond).toHaveBeenCalledWith({
     id: "u1",
     kind: "artifact-gate",

frontend/src/widgets/registry.test.tsx

@@ -11,5 +11,5 @@ test("resolve returns the registered renderer", () => {
 test("resolve falls back for unknown kind and shows the JSON", () => {
   const Comp = resolve("totally-unknown");
   render(<Comp descriptor={{ id: "u1", widget: "totally-unknown", title: "X" } as any} onRespond={() => {}} />);
-  expect(screen.getByText(/Widget non supportato/i)).toBeInTheDocument();
+  expect(screen.getByText(/Unsupported widget/i)).toBeInTheDocument();
 });