feat(i18n): language-aware AI surfaces (ko/en/ja) + v0.9.1

CHANGELOG.md

@@ -1,5 +1,12 @@
 # Changelog
 
+## v0.9.1 - 2026-07-05
+
+- Localized every AI surface for the selected app language (Korean/English/Japanese): the companion, inline editor AI, contextual edit, and Fact Book now build prompts and reply in the app language, including tool status text, apply results, and query outputs.
+- Translated canonical outline node labels (부/장/씬, 권/화) in AI prompts and the workspace UI, so an English or Japanese UI shows Arc 1/Episode 1 or 第1巻/第1話 instead of raw Korean labels.
+- Added English and Japanese keywords to the companion's intent detection so requests like "rewrite this scene" or 「書き直して」 apply changes directly, matching the Korean behavior.
+- Added an English (U.S.) App Store listing.
+
 ## v0.9.0 - 2026-06-24
 
 - Promoted desktop distribution to a public release: the macOS app is Developer ID signed and notarized through the Homebrew tap, with Windows (NSIS/MSI) and Linux (AppImage/deb/rpm) prebuilt installers published on every GitHub Release.

apps/desktop/package.json

@@ -1,6 +1,6 @@
 {
   "name": "linetta-desktop",
-  "version": "0.9.0",
+  "version": "0.9.1",
   "license": "AGPL-3.0-only",
   "private": true,
   "type": "module",

apps/desktop/src-tauri/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "linetta-desktop"
-version = "0.9.0"
+version = "0.9.1"
 edition = "2021"
 rust-version = "1.78"
 license = "AGPL-3.0-only"

apps/desktop/src-tauri/tauri.conf.json

@@ -1,7 +1,7 @@
 {
   "$schema": "https://schema.tauri.app/config/2",
   "productName": "Linetta",
-  "version": "0.9.0",
+  "version": "0.9.1",
   "identifier": "com.devlikebear.linetta",
   "build": {
     "frontendDist": "../dist",

apps/desktop/src/components/FactBookPanel.tsx

@@ -21,49 +21,31 @@
   onImpactCheck?: (text: string) => void;
 }
 
-function buildReviewPrompt(sceneLabel: string): string {
-  return [
-    `현재 씬 "${sceneLabel}"에서 웹검색 팩트체크가 필요한 현실 주장 후보를 찾아줘.`,
-    "아직 web_search나 web_fetch를 실행하지 마.",
-    "후보가 있으면 설명은 짧게 하고 linetta-choices 블록 하나로만 보여줘.",
-    "각 options 항목은 반드시 `검색 후 자료집에 저장: <주장>` 형식으로 작성해.",
-    "작가가 후보를 선택하면 그때 web_search와 web_fetch로 출처 URL을 확인하고, create_fact_card로 자료집에 저장해.",
-    "web_fetch가 404/403/본문 부족이면 그 URL은 저장 후보에서 제외하고 대체 출처를 더 찾아.",
-    "web_search API 키가 없어 실패하면 포기하지 말고 작가에게 출처 URL 직접 입력을 요청해. 작가가 URL을 입력하면 web_fetch로 확인한 뒤 저장해.",
-    "출처 URL 없는 create_fact_card는 금지야. 후보가 없으면 짧게 이유만 말해.",
-  ].join("\n");
+// The fact-check flows send user-turn prompts to the companion, so they are
+// localized like every other frontend string; the choice-prefix strip accepts
+// all supported languages because a transcript can mix them.
+type Translate = ReturnType<typeof useI18n>["t"];
+
+function buildReviewPrompt(t: Translate, sceneLabel: string): string {
+  return t("factBook.ai.review", { sceneLabel, savePrefix: t("factBook.ai.savePrefix") });
 }
 
+const CHOICE_SAVE_PREFIXES = /^(?:검색 후 자료집에 저장|Save to dossier after search|検索して資料集に保存):\s*/i;
+
 function claimFromChoice(text: string): string {
-  return text.replace(/^검색 후 자료집에 저장:\s*/i, "").trim();
+  return text.replace(CHOICE_SAVE_PREFIXES, "").trim();
 }
 
 function normalizeClaim(text: string): string {
   return text.replace(/\s+/g, " ").trim().toLowerCase();
 }
 
-function buildFactCheckPrompt(claim: string): string {
-  return [
-    `선택한 주장: ${claim}`,
-    "지금 바로 web_search로 신뢰 가능한 출처 후보를 찾고, 최소 1개 URL은 web_fetch로 본문 접근을 확인해.",
-    "web_fetch가 404/403/본문 부족이면 그 URL은 저장 후보에서 제외하고 같은 턴에 대체 출처를 더 검색해.",
-    "확인된 출처 URL이 있으면 같은 턴에 linetta_apply_ops의 create_fact_card로 자료집에 저장해.",
-    "create_fact_card 호출 없이 저장 완료라고 말하지 마. 저장이 실패하면 실패 이유와 필요한 다음 행동만 짧게 말해.",
-    "web_search나 web_fetch가 실패하면 포기하지 말고 출처 URL 직접 입력을 요청해.",
-  ].join("\n");
+function buildFactCheckPrompt(t: Translate, claim: string): string {
+  return t("factBook.ai.factCheck", { claim });
 }
 
-function buildAlternativeSourcePrompt(claim: string, failedURL: string, error: string): string {
-  return [
-    `선택한 주장: ${claim}`,
-    `방금 이 출처 URL은 앱의 저장 경로에서 실패했습니다: ${failedURL}`,
-    `실패 이유: ${error}`,
-    "이 URL은 저장 후보에서 제외해.",
-    "지금 바로 web_search로 신뢰 가능한 대체 출처 후보를 찾고, 최소 1개 URL은 web_fetch로 본문 접근을 확인해.",
-    "web_fetch가 404/403/본문 부족이면 그 URL도 저장 후보에서 제외하고 같은 턴에 대체 출처를 더 검색해.",
-    "확인된 출처 URL이 있으면 같은 턴에 linetta_apply_ops의 create_fact_card로 자료집에 저장해.",
-    "확인된 대체 출처가 없으면 저장했다고 말하지 말고, 출처 URL 직접 입력만 요청해.",
-  ].join("\n");
+function buildAlternativeSourcePrompt(t: Translate, claim: string, failedURL: string, error: string): string {
+  return t("factBook.ai.altSource", { claim, failedURL, error });
 }
 
 function firstURL(text: string): string {
@@ -260,7 +242,7 @@
     setReviewing(true);
     try {
       await beforeReview?.();
-      await send(buildReviewPrompt(sceneLabel));
+      await send(buildReviewPrompt(t, sceneLabel));
     } finally {
       setReviewing(false);
     }
@@ -278,7 +260,7 @@
     markFeedbackStart();
     void (async () => {
       await beforeReview?.();
-      await send(buildFactCheckPrompt(claim));
+      await send(buildFactCheckPrompt(t, claim));
     })();
   }, [beforeReview, busy, directSaving, selectedClaimRequest, send]);
 
@@ -308,7 +290,7 @@
     setSourceRetry(null);
     setAwaitingFactSave(Boolean(claim));
     markFeedbackStart();
-    void send(claim ? buildFactCheckPrompt(claim) : text);
+    void send(claim ? buildFactCheckPrompt(t, claim) : text);
   };
 
   const retryAlternativeSource = () => {
@@ -321,7 +303,7 @@
     markFeedbackStart();
     setFeedbackKind("ok");
     setFeedbackNote(t("factBook.retryingSource"));
-    void send(buildAlternativeSourcePrompt(retry.claim, retry.url, retry.error));
+    void send(buildAlternativeSourcePrompt(t, retry.claim, retry.url, retry.error));
   };
 
   const focusReplyInput = () => {

apps/desktop/src/components/ai/AIContextChecklist.tsx

@@ -38,9 +38,28 @@
   selection: AIContextSelection;
   onSelectionChange: (next: AIContextSelection) => void;
   disabled?: boolean;
+  /** Which feature owns this checklist; picks feature-specific section labels. */
+  variant?: "ai" | "companion";
 }
 
-export function AIContextChecklistList({ preview, selection, onSelectionChange, disabled = false }: ListProps) {
+type Translate = ReturnType<typeof useI18n>["t"];
+
+/** Section labels are translated in the frontend by stable section id; the
+ *  engine-provided label is only a fallback for unknown ids. */
+export function contextSectionLabel(
+  t: Translate,
+  id: AIContextKey,
+  variant: "ai" | "companion",
+  fallback: string,
+): string {
+  const key = id === "current_scene" && variant === "companion"
+    ? "ai.context.section.current_scene.companion"
+    : `ai.context.section.${id}`;
+  const label = t(key);
+  return label === key ? fallback : label;
+}
+
+export function AIContextChecklistList({ preview, selection, onSelectionChange, disabled = false, variant = "ai" }: ListProps) {
   const { t } = useI18n();
   const [openId, setOpenId] = useState<AIContextKey | null>(null);
 
@@ -49,6 +68,7 @@
       {preview.sections.map((section) => {
         const checked = section.present && selection[section.id];
         const canToggle = section.present && !disabled;
+        const label = contextSectionLabel(t, section.id, variant, section.label);
         return (
           <li key={section.id} className={section.present ? "" : "off"}>
             <div className="ai-context-row">
@@ -60,7 +80,7 @@
                   disabled={!canToggle}
                   onChange={(e) => onSelectionChange({ ...selection, [section.id]: e.target.checked })}
                 />
-                <span>{section.label}</span>
+                <span>{label}</span>
               </label>
               <span className="ai-context-meta">
                 {section.count > 0 && <span className="n">{formatCount(section, t)}</span>}
@@ -71,7 +91,7 @@
                 className="ai-preview-toggle"
                 onClick={() => setOpenId((id) => (id === section.id ? null : section.id))}
                 disabled={!section.present}
-                aria-label={t("ai.context.preview", { label: section.label })}
+                aria-label={t("ai.context.preview", { label })}
               >
                 {openId === section.id ? <ChevronDown size={13} /> : <ChevronRight size={13} />}
               </button>

apps/desktop/src/components/companion/CompanionPanel.tsx

@@ -1368,6 +1368,7 @@ export function CompanionPanel({
                 selection={contextSelection}
                 onSelectionChange={setContextSelection}
                 disabled={isBusy}
+                variant="companion"
               />
             )}
             <div className="companion-reference-panel">

apps/desktop/src/components/contextual/ContextChangeWizard.tsx

@@ -25,7 +25,7 @@ interface Props {
 type CandidateSelection = Record<string, Set<string>>;
 
 export function ContextChangeWizard({ projectId, initialEntityId, initialText, autoCheck, onApplied }: Props) {
-  const { t } = useI18n();
+  const { language, t } = useI18n();
   const [oldTerm, setOldTerm] = useState("");
   const [newTerm, setNewTerm] = useState("");
   const [entityMatches, setEntityMatches] = useState<Entity[]>([]);
@@ -74,7 +74,7 @@ export function ContextChangeWizard({ projectId, initialEntityId, initialText, a
     if (!autoCheck || !term || autoCheckKey === term) return;
     setAutoCheckKey(term);
     setReport(null);
-    contextual.checkConsistency({ project_id: projectId, old_terms: [term] })
+    contextual.checkConsistency({ project_id: projectId, old_terms: [term], language })
       .then((nextReport) => setReport(nextReport))
       .catch((err) => setError(String(err)));
   }, [autoCheck, autoCheckKey, initialText, projectId]);
@@ -146,6 +146,7 @@ export function ContextChangeWizard({ projectId, initialEntityId, initialText, a
     contextual.planChange({
       project_id: projectId,
       type: "rename",
+      language,
       ...(selectedEntityId
         ? { entity_id: selectedEntityId }
         : { selected_text: from, old_terms: [from] }),
@@ -184,6 +185,7 @@ export function ContextChangeWizard({ projectId, initialEntityId, initialText, a
           old_terms: plan.old_terms,
           new_terms: plan.new_terms,
           changed_entity_ids: plan.target.entity_ids ?? [],
+          language,
         });
         setReport(nextReport);
       })

apps/desktop/src/hooks/useCompanion.events.test.tsx

@@ -1,4 +1,5 @@
-import { act, renderHook, waitFor } from "@testing-library/react";
+import { act, renderHook as baseRenderHook, waitFor } from "@testing-library/react";
+import type { ReactNode } from "react";
 import { beforeEach, describe, expect, it, vi } from "vitest";
 import { DEFAULT_AI_CONTEXT_SELECTION } from "../components/ai/AIContextChecklist";
 
@@ -11,14 +12,21 @@ vi.mock("@tauri-apps/api/event", () => ({
   },
 }));
 
-const rpc = vi.hoisted(() => ({ history: vi.fn(), send: vi.fn(), cancel: vi.fn(), clear: vi.fn(), compact: vi.fn() }));
+const rpc = vi.hoisted(() => ({ history: vi.fn(), send: vi.fn(), cancel: vi.fn(), clear: vi.fn(), compact: vi.fn(), settingsGet: vi.fn() }));
 vi.mock("../lib/rpc", () => ({
   companion: { history: rpc.history, send: rpc.send, cancel: rpc.cancel, clear: rpc.clear, compact: rpc.compact },
+  settings: { get: rpc.settingsGet },
 }));
 
 import { stripProposalBlock } from "../lib/companionDisplay";
+import { I18nProvider } from "../lib/i18n";
 import { __resetCompanionSessionStoreForTests, classifyAISetupIssue, useCompanion } from "./useCompanion";
 
+// useCompanion reads the app language via useI18n, so every hook render
+// needs the provider. Shadow renderHook to inject it once.
+const i18nWrapper = ({ children }: { children: ReactNode }) => <I18nProvider>{children}</I18nProvider>;
+const renderHook: typeof baseRenderHook = (cb, options) => baseRenderHook(cb, { wrapper: i18nWrapper, ...options });
+
 function fire(event: string, payload: unknown) {
   const cb = ev.listeners.get(event);
   if (!cb) throw new Error(`no listener registered for ${event}`);
@@ -59,6 +67,7 @@ describe("useCompanion streaming", () => {
     __resetCompanionSessionStoreForTests();
     vi.clearAllMocks();
     ev.listeners.clear();
+    rpc.settingsGet.mockResolvedValue({ language: "ko" });
     rpc.history.mockResolvedValue([]);
     rpc.send.mockResolvedValue({ run_id: "r1" });
     rpc.cancel.mockResolvedValue({ ok: true });
@@ -153,7 +162,7 @@ describe("useCompanion streaming", () => {
       await result.current.send("본문은 빼고 봐줘");
     });
 
-    expect(rpc.send).toHaveBeenCalledWith("p1", "n1", "본문은 빼고 봐줘", { context: selection });
+    expect(rpc.send).toHaveBeenCalledWith("p1", "n1", "본문은 빼고 봐줘", { context: selection, language: "ko" });
   });
 
   it("passes companion image attachments with the selected context", async () => {
@@ -171,7 +180,7 @@ describe("useCompanion streaming", () => {
       await result.current.send("이미지 참고해줘", [image]);
     });
 
-    expect(rpc.send).toHaveBeenCalledWith("p1", "n1", "이미지 참고해줘", { context: selection, images: [image] });
+    expect(rpc.send).toHaveBeenCalledWith("p1", "n1", "이미지 참고해줘", { context: selection, images: [image], language: "ko" });
   });
 
   it("loads persisted transcript separately for each scene scope", async () => {
@@ -225,7 +234,7 @@ describe("useCompanion streaming", () => {
     });
 
     expect(rpc.history).toHaveBeenCalledWith("p1", null, "project");
-    expect(rpc.send).toHaveBeenCalledWith("p1", "", "작품 전체 플롯 봐줘", { scope: "project" });
+    expect(rpc.send).toHaveBeenCalledWith("p1", "", "작품 전체 플롯 봐줘", { scope: "project", language: "ko" });
   });
 
   it("passes the selected outline structure to companion turns", async () => {
@@ -241,6 +250,7 @@ describe("useCompanion streaming", () => {
     expect(rpc.send).toHaveBeenCalledWith("p1", "n1", "아웃라인 작성해줘", {
       context: selection,
       outline_structure: outlineStructure,
+      language: "ko",
     });
   });
 
@@ -294,6 +304,7 @@ describe("useCompanion streaming", () => {
 
     expect(rpc.send).toHaveBeenCalledWith("p1", "n1", "현재 씬 본문 써줘", {
       intent: { kind: "scene_write", target_node_id: "n1", apply_policy: "direct" },
+      language: "ko",
     });
   });
 
@@ -403,7 +414,7 @@ describe("useCompanion streaming", () => {
       await result.current.compact();
     });
 
-    expect(rpc.compact).toHaveBeenCalledWith("p1", "n1", "scene");
+    expect(rpc.compact).toHaveBeenCalledWith("p1", "n1", "scene", "ko");
     expect(result.current.messages).toEqual([
       { role: "assistant", content: "이전 컴패니언 대화 요약\n- 나: 긴 질문" },
     ]);