diff --git a/AGENTS.md b/AGENTS.md
index 4ee9dd03..bb4b81b8 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -654,3 +654,5 @@ a late prompt or starting inference.
 Model capability gates include attachments replayed from history, including text-only follow-ups.
 The bus's internal remote source skips SQLite persistence and local plugin event hooks;
 ordinary live subscribers still receive the unchanged event. Existing publishers default local.
+
+Space (`#/space`): labelled Base UI `Field` form (optional title, required content with inline validation), designed empty state and card list; copy in `live.space.*`. Evidence: `evidence/space-redesign/`.
diff --git a/packages/app/src/kit/styles.css b/packages/app/src/kit/styles.css
index 0e1c2fb8..abc74b65 100644
--- a/packages/app/src/kit/styles.css
+++ b/packages/app/src/kit/styles.css
@@ -574,3 +574,20 @@ a.chip { display: inline-flex; align-items: center; text-decoration: none; }
 
 /* Registry screen root (registry.tsx Root): layout-neutral wrapper carrying the per-screen testID. */
 .screen-root { display: contents; }
+
+/* ---------- Space (pages) ---------- */
+.space { max-width: 680px; margin: 0 auto; padding-top: 8px; display: flex; flex-direction: column; }
+.space-lead { margin: 0 0 20px; color: var(--t2); }
+.space-form { display: flex; flex-direction: column; gap: 16px; padding: 18px; border-radius: var(--r-card); background: var(--card); box-shadow: var(--ring); }
+.space-field { display: flex; flex-direction: column; gap: 6px; }
+.space-label { display: flex; align-items: baseline; gap: 6px; font-weight: 500; }
+.space-opt { font-weight: 400; color: var(--t3); font-size: 11px; }
+.space-text { height: auto; min-height: 140px; resize: vertical; line-height: 20px; }
+.space-error { margin: 0; color: var(--red); font-size: 12px; }
+.space-actions { display: flex; justify-content: flex-end; }
+.space-h2 { margin: 28px 0 10px; font-size: 15px; font-weight: 500; }
+.space-row { width: 100%; text-align: left; }
+.space-row:hover { background: var(--hover); }
+.space-empty { display: flex; flex-direction: column; align-items: center; gap: 4px; padding: 32px 20px; border-radius: var(--r-card); background: var(--card); box-shadow: var(--ring); text-align: center; color: var(--t2); }
+.space-empty h3 { margin: 10px 0 0; font-size: 13px; font-weight: 500; color: var(--t1); }
+.space-empty p { margin: 0; }
diff --git a/packages/app/src/screens/live/productivity.tsx b/packages/app/src/screens/live/productivity.tsx
index 9bdcc5f5..30c5e9b0 100644
--- a/packages/app/src/screens/live/productivity.tsx
+++ b/packages/app/src/screens/live/productivity.tsx
@@ -1,4 +1,5 @@
 import * as React from "react";
+import { Field } from "@base-ui/react/field";
 import { api } from "../../api";
 import { useT } from "../../i18n";
 import { useNav } from "../../shell/nav";
@@ -15,16 +16,29 @@ export function Space() {
 function SpaceHome({ epoch }: { epoch: string }) {
   const t = useT(), { go } = useNav(), c = useContract();
   const q = useOp<{ items: File[] }>(epoch, "app.library");
-  const [title, setTitle] = React.useState(""), [text, setText] = React.useState("");
-  return <section data-testid="space">
-    <form className="list" data-testid="space-new" onSubmit={e => { e.preventDefault(); void c.run(async () => { const f = await call<File>(epoch, "app.note.create", {}, { title: title.trim() || undefined, text }); go("space-page", { id: f.id }); }); }}>
-      <label className="field">{t("live.space.pageTitle")}<input className="input" data-testid="space-title" maxLength={200} value={title} onChange={e => setTitle(e.target.value)} /></label>
-      <label className="field">{t("live.space.text")}<textarea className="input" data-testid="space-text" required value={text} onChange={e => setText(e.target.value)} /></label>
-      <button className="btn primary" data-testid="space-create" disabled={c.busy || !text.trim()}>{t("live.space.create")}</button>
+  const [title, setTitle] = React.useState(""), [text, setText] = React.useState(""), [touched, setTouched] = React.useState(false);
+  const invalid = touched && !text.trim();
+  return <section className="space" data-testid="space">
+    <p className="space-lead">{t("live.space.lead")}</p>
+    <form className="space-form" data-testid="space-new" noValidate onSubmit={e => { e.preventDefault(); setTouched(true); if (!text.trim()) return; void c.run(async () => { const f = await call<File>(epoch, "app.note.create", {}, { title: title.trim() || undefined, text }); go("space-page", { id: f.id }); }); }}>
+      <Field.Root className="space-field">
+        <Field.Label className="space-label">{t("live.space.pageTitle")}<span className="space-opt">{t("live.space.optional")}</span></Field.Label>
+        <Field.Control className="input" data-testid="space-title" maxLength={200} placeholder={t("live.space.titlePlaceholder")} value={title} onChange={e => setTitle(e.target.value)} />
+      </Field.Root>
+      <Field.Root className="space-field" invalid={invalid}>
+        <Field.Label className="space-label">{t("live.space.text")}</Field.Label>
+        <Field.Control render={<textarea className="input space-text" data-testid="space-text" rows={6} />} placeholder={t("live.space.textPlaceholder")} value={text} onChange={e => setText((e.target as unknown as HTMLTextAreaElement).value)} onBlur={() => setTouched(true)} />
+        {invalid && <p className="space-error" role="alert" data-testid="space-text-error">{t("live.space.textRequired")}</p>}
+      </Field.Root>
       <ContractError code={c.error} />
+      <div className="space-actions">
+        <button className="btn primary" data-testid="space-create" aria-busy={c.busy} disabled={c.busy || !text.trim()}>{c.busy ? t("live.space.creating") : t("live.space.create")}</button>
+      </div>
     </form>
-    <h2>{t("live.space.pages")}</h2>
-    <Loaded q={q} empty={d => !d?.items.length}>{d => <div className="list">{d!.items.map(f => <button key={f.id} className="li" data-testid="space-row" onClick={() => go("space-page", { id: f.id })}><Icon name="file" /><span className="grow">{f.filename}</span><span className="code-meta">{when(f.created_at)}</span><Icon name="chevron-right" /></button>)}</div>}</Loaded>
+    <h2 className="space-h2">{t("live.space.pages")}</h2>
+    <Loaded q={q}>{d => d?.items.length
+      ? <div className="list" data-testid="space-list">{d.items.map(f => <button key={f.id} className="li space-row" data-testid="space-row" onClick={() => go("space-page", { id: f.id })}><span className="li-ic"><Icon name="file" /></span><span className="grow"><span className="ttl">{f.filename}</span></span><span className="code-meta">{when(f.created_at)}</span><Icon name="chevron-right" /></button>)}</div>
+      : <div className="space-empty" data-testid="live-empty"><span className="li-ic"><Icon name="file" /></span><h3>{t("live.space.emptyTitle")}</h3><p>{t("live.space.emptyText")}</p></div>}</Loaded>
   </section>;
 }
 
diff --git a/packages/i18n/locales/de/live.json b/packages/i18n/locales/de/live.json
index a2366798..9996a855 100644
--- a/packages/i18n/locales/de/live.json
+++ b/packages/i18n/locales/de/live.json
@@ -224,5 +224,13 @@
   "scheduled.heading": "Geplante Aufgaben",
   "scheduled.workspace": "Workspace",
   "scheduled.tab": "Geplant",
-  "plugins.tab": "Erweiterungen"
+  "plugins.tab": "Erweiterungen",
+  "space.lead": "Notizen und Seiten, die dein Bot lesen und weiterentwickeln kann.",
+  "space.optional": "Optional",
+  "space.titlePlaceholder": "Unbenannte Seite",
+  "space.textPlaceholder": "Schreibe oder füge ein, was du behalten möchtest",
+  "space.textRequired": "Füge Inhalt hinzu, um eine Seite zu erstellen.",
+  "space.creating": "Wird erstellt…",
+  "space.emptyTitle": "Noch keine Seiten",
+  "space.emptyText": "Seiten, die du erstellst, erscheinen hier."
 }
diff --git a/packages/i18n/locales/en/live.json b/packages/i18n/locales/en/live.json
index 20c2e301..d28e8d8d 100644
--- a/packages/i18n/locales/en/live.json
+++ b/packages/i18n/locales/en/live.json
@@ -224,5 +224,13 @@
   "scheduled.heading": "Scheduled tasks",
   "scheduled.workspace": "Workspace",
   "scheduled.tab": "Scheduled",
-  "plugins.tab": "Extensions"
+  "plugins.tab": "Extensions",
+  "space.lead": "Notes and pages your Bot can read and build on.",
+  "space.optional": "Optional",
+  "space.titlePlaceholder": "Untitled page",
+  "space.textPlaceholder": "Write or paste anything you want to keep",
+  "space.textRequired": "Add some content to create a page.",
+  "space.creating": "Creating…",
+  "space.emptyTitle": "No pages yet",
+  "space.emptyText": "Pages you create appear here."
 }
diff --git a/packages/i18n/locales/es/live.json b/packages/i18n/locales/es/live.json
index 90bd2540..22586bf7 100644
--- a/packages/i18n/locales/es/live.json
+++ b/packages/i18n/locales/es/live.json
@@ -224,5 +224,13 @@
   "scheduled.heading": "Tareas programadas",
   "scheduled.workspace": "Espacio de trabajo",
   "scheduled.tab": "Programadas",
-  "plugins.tab": "Extensiones"
+  "plugins.tab": "Extensiones",
+  "space.lead": "Notas y páginas que tu Bot puede leer y ampliar.",
+  "space.optional": "Opcional",
+  "space.titlePlaceholder": "Página sin título",
+  "space.textPlaceholder": "Escribe o pega lo que quieras guardar",
+  "space.textRequired": "Añade contenido para crear una página.",
+  "space.creating": "Creando…",
+  "space.emptyTitle": "Aún no hay páginas",
+  "space.emptyText": "Las páginas que crees aparecerán aquí."
 }
diff --git a/packages/i18n/locales/fr/live.json b/packages/i18n/locales/fr/live.json
index 78fdffe7..2d230f05 100644
--- a/packages/i18n/locales/fr/live.json
+++ b/packages/i18n/locales/fr/live.json
@@ -224,5 +224,13 @@
   "scheduled.heading": "Tâches planifiées",
   "scheduled.workspace": "Espace de travail",
   "scheduled.tab": "Planifiées",
-  "plugins.tab": "Extensions"
+  "plugins.tab": "Extensions",
+  "space.lead": "Notes et pages que ton Bot peut lire et enrichir.",
+  "space.optional": "Facultatif",
+  "space.titlePlaceholder": "Page sans titre",
+  "space.textPlaceholder": "Écris ou colle ce que tu veux garder",
+  "space.textRequired": "Ajoute du contenu pour créer une page.",
+  "space.creating": "Création…",
+  "space.emptyTitle": "Aucune page pour l'instant",
+  "space.emptyText": "Les pages que tu crées apparaissent ici."
 }
diff --git a/packages/i18n/locales/ja/live.json b/packages/i18n/locales/ja/live.json
index 9950dae6..eebc3e36 100644
--- a/packages/i18n/locales/ja/live.json
+++ b/packages/i18n/locales/ja/live.json
@@ -224,5 +224,13 @@
   "scheduled.heading": "スケジュール済みのタスク",
   "scheduled.workspace": "ワークスペース",
   "scheduled.tab": "スケジュール",
-  "plugins.tab": "拡張機能"
+  "plugins.tab": "拡張機能",
+  "space.lead": "Bot が読んで活用できるメモとページ。",
+  "space.optional": "任意",
+  "space.titlePlaceholder": "無題のページ",
+  "space.textPlaceholder": "残しておきたい内容を入力または貼り付け",
+  "space.textRequired": "ページを作成するには内容を追加してください。",
+  "space.creating": "作成中…",
+  "space.emptyTitle": "まだページがありません",
+  "space.emptyText": "作成したページはここに表示されます。"
 }
diff --git a/packages/i18n/locales/ko/live.json b/packages/i18n/locales/ko/live.json
index b101902a..5cbc7a3b 100644
--- a/packages/i18n/locales/ko/live.json
+++ b/packages/i18n/locales/ko/live.json
@@ -224,5 +224,13 @@
   "scheduled.heading": "예약된 작업",
   "scheduled.workspace": "워크스페이스",
   "scheduled.tab": "예약됨",
-  "plugins.tab": "확장 프로그램"
+  "plugins.tab": "확장 프로그램",
+  "space.lead": "Bot이 읽고 활용할 수 있는 메모와 페이지입니다.",
+  "space.optional": "선택 사항",
+  "space.titlePlaceholder": "제목 없는 페이지",
+  "space.textPlaceholder": "보관하고 싶은 내용을 입력하거나 붙여 넣으세요",
+  "space.textRequired": "페이지를 만들려면 내용을 추가하세요.",
+  "space.creating": "만드는 중…",
+  "space.emptyTitle": "아직 페이지가 없습니다",
+  "space.emptyText": "만든 페이지가 여기에 표시됩니다."
 }
diff --git a/packages/i18n/locales/pt-BR/live.json b/packages/i18n/locales/pt-BR/live.json
index e1ca4d19..7ed38dc3 100644
--- a/packages/i18n/locales/pt-BR/live.json
+++ b/packages/i18n/locales/pt-BR/live.json
@@ -224,5 +224,13 @@
   "scheduled.heading": "Tarefas agendadas",
   "scheduled.workspace": "Espaço de trabalho",
   "scheduled.tab": "Agendadas",
-  "plugins.tab": "Extensões"
+  "plugins.tab": "Extensões",
+  "space.lead": "Notas e páginas que seu Bot pode ler e expandir.",
+  "space.optional": "Opcional",
+  "space.titlePlaceholder": "Página sem título",
+  "space.textPlaceholder": "Escreva ou cole o que quiser guardar",
+  "space.textRequired": "Adicione conteúdo para criar uma página.",
+  "space.creating": "Criando…",
+  "space.emptyTitle": "Nenhuma página ainda",
+  "space.emptyText": "As páginas que você criar aparecem aqui."
 }
diff --git a/packages/i18n/locales/zh-Hans/live.json b/packages/i18n/locales/zh-Hans/live.json
index 8df8f9b9..a0fd6736 100644
--- a/packages/i18n/locales/zh-Hans/live.json
+++ b/packages/i18n/locales/zh-Hans/live.json
@@ -224,5 +224,13 @@
   "scheduled.heading": "定时任务",
   "scheduled.workspace": "工作区",
   "scheduled.tab": "定时",
-  "plugins.tab": "扩展"
+  "plugins.tab": "扩展",
+  "space.lead": "你的 Bot 可以阅读和扩展的笔记与页面。",
+  "space.optional": "可选",
+  "space.titlePlaceholder": "无标题页面",
+  "space.textPlaceholder": "写下或粘贴你想保留的内容",
+  "space.textRequired": "添加内容以创建页面。",
+  "space.creating": "正在创建…",
+  "space.emptyTitle": "还没有页面",
+  "space.emptyText": "你创建的页面会显示在这里。"
 }
diff --git a/tests/e2e/space-pages.spec.ts b/tests/e2e/space-pages.spec.ts
new file mode 100644
index 00000000..bc12d71c
--- /dev/null
+++ b/tests/e2e/space-pages.spec.ts
@@ -0,0 +1,54 @@
+import fs from "node:fs";
+import { test, expect, type ElectronApplication, type Page } from "@playwright/test";
+import { launch } from "./fixtures";
+
+type Wire = { url: string; method: string; body?: string };
+const FILES = [{ id: "f1", filename: "Launch notes", created_at: "2026-10-07T09:00:00Z", byte_size: 120 }];
+
+async function install(app: ElectronApplication, items: unknown[]) {
+  await app.evaluate(({ ipcMain }, items) => {
+    const handlers = (ipcMain as unknown as { _invokeHandlers: Map<string, (e: unknown, r: Wire) => Promise<unknown>> })._invokeHandlers;
+    const original = handlers.get("cortex:fetch")!;
+    ipcMain.removeHandler("cortex:fetch");
+    ipcMain.handle("cortex:fetch", async (event, request: Wire) => {
+      const path = new URL(request.url).pathname;
+      let body: unknown;
+      if (path === "/api/connection") body = { mode: "cloud", signedIn: true };
+      else if (path === "/api/code/models") body = { epoch: "e", models: [] };
+      else if (path === "/api/code/contract") body = { data: JSON.parse(request.body ?? "{}").op === "app.library" ? { items } : { id: "f2", filename: "x", created_at: "2026-10-07T09:00:00Z", byte_size: 1 } };
+      else return original(event, request);
+      return { status: 200, headers: [["Content-Type", "application/json"]], body: JSON.stringify(body) };
+    });
+  }, items);
+}
+async function shot(page: Page, name: string) {
+  const p = test.info().outputPath(`${name}.png`);
+  await page.screenshot({ path: p, animations: "disabled" });
+  await test.info().attach(name, { path: p, contentType: "image/png" });
+}
+
+for (const theme of ["dark", "light"]) for (const [state, items] of [["empty", []], ["list", FILES]] as const) {
+  test(`Space page form, validation and ${state} state — ${theme}`, async () => {
+    const { app, page, dataDir } = await launch({ hash: `#/space?theme=${theme}`, locale: "en" });
+    try {
+      await page.emulateMedia({ reducedMotion: "reduce" });
+      await install(app, [...items]);
+      await page.evaluate(() => { location.hash = "#/home"; });
+      await page.evaluate(() => { location.hash = "#/space"; });
+      const create = page.getByTestId("space-create");
+      await expect(create).toBeDisabled();
+      await expect(page.getByLabel("Title")).toBeVisible();
+      await expect(page.locator("details, select")).toHaveCount(0);
+      if (state === "empty") await expect(page.getByTestId("live-empty")).toContainText("No pages yet");
+      else await expect(page.getByTestId("space-row")).toContainText("Launch notes");
+      await page.getByTestId("space-text").focus();
+      await page.getByTestId("space-text").blur();
+      await expect(page.getByTestId("space-text-error")).toBeVisible();
+      await page.getByTestId("space-text").fill("Hello");
+      await expect(create).toBeEnabled();
+      await expect(page.getByTestId("space-text-error")).toHaveCount(0);
+      await page.getByTestId("space-text").fill("");
+      await shot(page, `space-${state}-${theme}`);
+    } finally { await app.close(); fs.rmSync(dataDir, { recursive: true, force: true }); }
+  });
+}