auto-git:

[add] README.md [add] client/.gitignore [add] client/README.md [add] client/eslint.config.js [add] client/index.html [add] client/package.json [add] client/public/vite.svg [add] client/src/App.css [add] client/src/App.tsx [add] client/src/api.ts [add] client/src/assets/react.svg [add] client/src/components/EntryCard.tsx [add] client/src/components/ItemPanels.tsx [add] client/src/components/QuizRunner.tsx [add] client/src/components/VideoPlayer.tsx [add] client/src/index.css [add] client/src/main.tsx [add] client/src/pages/EntryPage.tsx [add] client/src/pages/OverviewPage.tsx [add] client/src/pages/QuizPage.tsx [add] client/src/types.ts [add] client/tsconfig.app.json [add] client/tsconfig.json [add] client/tsconfig.node.json [add] client/vite.config.ts [add] gemini_replicate_batch.py [add] package.json [add] prompt.txt [add] server/package.json [add] server/src/index.ts [add] server/tsconfig.json
2026-01-07 18:35:20 +01:00
parent f80da70512
commit 1d9e7cbcbb
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--- a/README.md
+++ b/README.md
@@ -0,0 +1,50 @@
+# IG Japanese Quizzer
+
+A full-stack web app for drilling Japanese grammar, vocabulary, and phrases from locally stored Instagram posts. The server indexes every `*.mp4` + matching `*.json` pair under `data/` and exposes them to a React/Vite frontend with a quiz wizard.
+
+## Quick start
+
+1. Install dependencies (root workspace):
+   ```bash
+   npm install
+   ```
+2. Run both servers (frontend on 5173, backend on 5174):
+   ```bash
+   npm run dev
+   ```
+   - Vite proxies `/api` and `/data` to the Express server, so the client can use relative URLs.
+3. Open the app at http://localhost:5173.
+
+### Scripts
+- `npm run dev` – concurrently runs `server` (Express + ts-node-dev) and `client` (Vite dev server).
+- `npm run build` – builds the server TypeScript and Vite client.
+- `npm run dev --workspace server` / `npm run dev --workspace client` – run either side individually.
+
+## Data layout
+
+Files live under `data/` (scanned recursively):
+```
+data/<POST_ID>/<FILENAME>.mp4
+\_ <FILENAME>.json   # quiz payload for that video
+```
+- Base filenames must match. Extra sidecars (`.raw.txt`, `.mp4.json`, images) are ignored.
+- The JSON structure is tolerant but expects keys: `meta`, `items`, `quiz`, `ui_hints` (additional fields are ignored).
+- `entry_id` is the path from `data/` to the mp4 **without** the `.mp4` extension (e.g., `C1abc/12345`). It is URL-encoded in routes/query params.
+- Videos are served statically at `/data/...` by the backend; JSON is only accessible through the API.
+
+## API
+- `GET /api/entries` → list of entries `{ id, title, mode, type, counts, video_url }`, sorted by title.
+- `GET /api/entry?id=<entry_id>` → full entry JSON plus derived fields `{ id, title, video_url, counts }`.
+
+## Frontend features
+- Overview grid of all entries with counts and metadata.
+- Entry detail page with embedded video and learning panels.
+- Quiz Wizard with three modes:
+  - All entries (random 10 questions)
+  - Selected entries (checkbox picker)
+  - Single entry (linked from detail page)
+- Quiz types: cloze input, multiple-choice variants, match pairs, and best reply. Wrong answers reveal explanations and the source video.
+
+## Notes
+- The server prevents path traversal by validating resolved paths against the data root and only serving scanned entries.
+- Update or add new posts by dropping files into `data/` and restarting the server to rescan.
--- a/client/.gitignore
+++ b/client/.gitignore
@@ -0,0 +1,24 @@
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+lerna-debug.log*
+
+node_modules
+dist
+dist-ssr
+*.local
+
+# Editor directories and files
+.vscode/*
+!.vscode/extensions.json
+.idea
+.DS_Store
+*.suo
+*.ntvs*
+*.njsproj
+*.sln
+*.sw?
--- a/client/README.md
+++ b/client/README.md
@@ -0,0 +1,73 @@
+# React + TypeScript + Vite
+
+This template provides a minimal setup to get React working in Vite with HMR and some ESLint rules.
+
+Currently, two official plugins are available:
+
+- [@vitejs/plugin-react](https://github.com/vitejs/vite-plugin-react/blob/main/packages/plugin-react) uses [Babel](https://babeljs.io/) (or [oxc](https://oxc.rs) when used in [rolldown-vite](https://vite.dev/guide/rolldown)) for Fast Refresh
+- [@vitejs/plugin-react-swc](https://github.com/vitejs/vite-plugin-react/blob/main/packages/plugin-react-swc) uses [SWC](https://swc.rs/) for Fast Refresh
+
+## React Compiler
+
+The React Compiler is not enabled on this template because of its impact on dev & build performances. To add it, see [this documentation](https://react.dev/learn/react-compiler/installation).
+
+## Expanding the ESLint configuration
+
+If you are developing a production application, we recommend updating the configuration to enable type-aware lint rules:
+
+```js
+export default defineConfig([
+  globalIgnores(['dist']),
+  {
+    files: ['**/*.{ts,tsx}'],
+    extends: [
+      // Other configs...
+
+      // Remove tseslint.configs.recommended and replace with this
+      tseslint.configs.recommendedTypeChecked,
+      // Alternatively, use this for stricter rules
+      tseslint.configs.strictTypeChecked,
+      // Optionally, add this for stylistic rules
+      tseslint.configs.stylisticTypeChecked,
+
+      // Other configs...
+    ],
+    languageOptions: {
+      parserOptions: {
+        project: ['./tsconfig.node.json', './tsconfig.app.json'],
+        tsconfigRootDir: import.meta.dirname,
+      },
+      // other options...
+    },
+  },
+])
+```
+
+You can also install [eslint-plugin-react-x](https://github.com/Rel1cx/eslint-react/tree/main/packages/plugins/eslint-plugin-react-x) and [eslint-plugin-react-dom](https://github.com/Rel1cx/eslint-react/tree/main/packages/plugins/eslint-plugin-react-dom) for React-specific lint rules:
+
+```js
+// eslint.config.js
+import reactX from 'eslint-plugin-react-x'
+import reactDom from 'eslint-plugin-react-dom'
+
+export default defineConfig([
+  globalIgnores(['dist']),
+  {
+    files: ['**/*.{ts,tsx}'],
+    extends: [
+      // Other configs...
+      // Enable lint rules for React
+      reactX.configs['recommended-typescript'],
+      // Enable lint rules for React DOM
+      reactDom.configs.recommended,
+    ],
+    languageOptions: {
+      parserOptions: {
+        project: ['./tsconfig.node.json', './tsconfig.app.json'],
+        tsconfigRootDir: import.meta.dirname,
+      },
+      // other options...
+    },
+  },
+])
+```
--- a/client/eslint.config.js
+++ b/client/eslint.config.js
@@ -0,0 +1,23 @@
+import js from '@eslint/js'
+import globals from 'globals'
+import reactHooks from 'eslint-plugin-react-hooks'
+import reactRefresh from 'eslint-plugin-react-refresh'
+import tseslint from 'typescript-eslint'
+import { defineConfig, globalIgnores } from 'eslint/config'
+
+export default defineConfig([
+  globalIgnores(['dist']),
+  {
+    files: ['**/*.{ts,tsx}'],
+    extends: [
+      js.configs.recommended,
+      tseslint.configs.recommended,
+      reactHooks.configs.flat.recommended,
+      reactRefresh.configs.vite,
+    ],
+    languageOptions: {
+      ecmaVersion: 2020,
+      globals: globals.browser,
+    },
+  },
+])
--- a/client/index.html
+++ b/client/index.html
@@ -0,0 +1,13 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="UTF-8" />
+    <link rel="icon" type="image/svg+xml" href="/vite.svg" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+    <title>client</title>
+  </head>
+  <body>
+    <div id="root"></div>
+    <script type="module" src="/src/main.tsx"></script>
+  </body>
+</html>
--- a/client/package.json
+++ b/client/package.json
@@ -0,0 +1,31 @@
+{
+  "name": "client",
+  "private": true,
+  "version": "0.0.0",
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "tsc -b && vite build",
+    "lint": "eslint .",
+    "preview": "vite preview"
+  },
+  "dependencies": {
+    "react": "^19.2.0",
+    "react-dom": "^19.2.0",
+    "react-router-dom": "^6.28.0"
+  },
+  "devDependencies": {
+    "@eslint/js": "^9.39.1",
+    "@types/node": "^24.10.1",
+    "@types/react": "^19.2.5",
+    "@types/react-dom": "^19.2.3",
+    "@vitejs/plugin-react": "^5.1.1",
+    "eslint": "^9.39.1",
+    "eslint-plugin-react-hooks": "^7.0.1",
+    "eslint-plugin-react-refresh": "^0.4.24",
+    "globals": "^16.5.0",
+    "typescript": "~5.9.3",
+    "typescript-eslint": "^8.46.4",
+    "vite": "^7.2.4"
+  }
+}
--- a/client/public/vite.svg
+++ b/client/public/vite.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" class="iconify iconify--logos" width="31.88" height="32" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 257"><defs><linearGradient id="IconifyId1813088fe1fbc01fb466" x1="-.828%" x2="57.636%" y1="7.652%" y2="78.411%"><stop offset="0%" stop-color="#41D1FF"></stop><stop offset="100%" stop-color="#BD34FE"></stop></linearGradient><linearGradient id="IconifyId1813088fe1fbc01fb467" x1="43.376%" x2="50.316%" y1="2.242%" y2="89.03%"><stop offset="0%" stop-color="#FFEA83"></stop><stop offset="8.333%" stop-color="#FFDD35"></stop><stop offset="100%" stop-color="#FFA800"></stop></linearGradient></defs><path fill="url(#IconifyId1813088fe1fbc01fb466)" d="M255.153 37.938L134.897 252.976c-2.483 4.44-8.862 4.466-11.382.048L.875 37.958c-2.746-4.814 1.371-10.646 6.827-9.67l120.385 21.517a6.537 6.537 0 0 0 2.322-.004l117.867-21.483c5.438-.991 9.574 4.796 6.877 9.62Z"></path><path fill="url(#IconifyId1813088fe1fbc01fb467)" d="M185.432.063L96.44 17.501a3.268 3.268 0 0 0-2.634 3.014l-5.474 92.456a3.268 3.268 0 0 0 3.997 3.378l24.777-5.718c2.318-.535 4.413 1.507 3.936 3.838l-7.361 36.047c-.495 2.426 1.782 4.5 4.151 3.78l15.304-4.649c2.372-.72 4.652 1.36 4.15 3.788l-11.698 56.621c-.732 3.542 3.979 5.473 5.943 2.437l1.313-2.028l72.516-144.72c1.215-2.423-.88-5.186-3.54-4.672l-25.505 4.922c-2.396.462-4.435-1.77-3.759-4.114l16.646-57.705c.677-2.35-1.37-4.583-3.769-4.113Z"></path></svg>
--- a/client/src/App.css
+++ b/client/src/App.css
@@ -0,0 +1,45 @@
+.app-shell {
+  min-height: 100vh;
+}
+
+.topbar {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  padding: 1.25rem 0;
+  position: sticky;
+  top: 0;
+  z-index: 10;
+  backdrop-filter: blur(12px);
+}
+
+.brand {
+  font-weight: 800;
+  letter-spacing: -0.01em;
+  font-size: 1.1rem;
+  text-decoration: none;
+}
+
+nav {
+  display: flex;
+  gap: 0.5rem;
+}
+
+.link {
+  padding: 0.55rem 0.85rem;
+  border-radius: 12px;
+  text-decoration: none;
+  color: inherit;
+  font-weight: 600;
+}
+
+.link.active {
+  background: rgba(0, 0, 0, 0.06);
+  color: var(--accent);
+}
+
+.main {
+  max-width: 1080px;
+  margin: 0 auto;
+  padding: 0 1rem 3rem;
+}
--- a/client/src/App.tsx
+++ b/client/src/App.tsx
@@ -0,0 +1,33 @@
+import { NavLink, Route, Routes } from 'react-router-dom';
+import OverviewPage from './pages/OverviewPage';
+import EntryPage from './pages/EntryPage';
+import QuizPage from './pages/QuizPage';
+import './App.css';
+
+export default function App() {
+  return (
+    <div className="app-shell">
+      <header className="topbar">
+        <NavLink to="/" className="brand">
+          IG Japanese Quizzer
+        </NavLink>
+        <nav>
+          <NavLink to="/" end className={({ isActive }) => (isActive ? 'link active' : 'link')}>
+            Overview
+          </NavLink>
+          <NavLink to="/quiz" className={({ isActive }) => (isActive ? 'link active' : 'link')}>
+            Quiz Wizard
+          </NavLink>
+        </nav>
+      </header>
+
+      <main className="main">
+        <Routes>
+          <Route path="/" element={<OverviewPage />} />
+          <Route path="/entry/:idEncoded" element={<EntryPage />} />
+          <Route path="/quiz" element={<QuizPage />} />
+        </Routes>
+      </main>
+    </div>
+  );
+}
--- a/client/src/api.ts
+++ b/client/src/api.ts
@@ -0,0 +1,57 @@
+import type { EntryDetail, EntryItems, EntrySummary } from './types';
+
+const entryCache = new Map<string, EntryDetail>();
+
+function normalizeItems(items: Partial<EntryItems> | undefined): EntryItems {
+  return {
+    grammar: Array.isArray(items?.grammar) ? items.grammar : [],
+    vocab: Array.isArray(items?.vocab) ? items.vocab : [],
+    conversation: Array.isArray(items?.conversation) ? items.conversation : [],
+    key_phrases: Array.isArray(items?.key_phrases) ? items.key_phrases : [],
+  };
+}
+
+function normalizeDetail(payload: any): EntryDetail {
+  const items = normalizeItems(payload?.items);
+  const counts = payload?.counts || {
+    grammar: items.grammar.length,
+    vocab: items.vocab.length,
+    key_phrases: items.key_phrases.length,
+    conversation: items.conversation.length,
+    quiz: Array.isArray(payload?.quiz) ? payload.quiz.length : 0,
+  };
+
+  return {
+    id: String(payload?.id ?? ''),
+    title: payload?.title || payload?.meta?.title_en || String(payload?.id ?? 'Untitled'),
+    meta: payload?.meta || {},
+    items,
+    quiz: Array.isArray(payload?.quiz) ? payload.quiz : [],
+    ui_hints: payload?.ui_hints || {},
+    video_url: payload?.video_url || '',
+    counts,
+  };
+}
+
+export async function fetchEntries(): Promise<EntrySummary[]> {
+  const response = await fetch('/api/entries');
+  if (!response.ok) {
+    throw new Error('Failed to load entries');
+  }
+  return response.json();
+}
+
+export async function fetchEntry(id: string): Promise<EntryDetail> {
+  if (entryCache.has(id)) {
+    return entryCache.get(id)!;
+  }
+
+  const response = await fetch(`/api/entry?id=${encodeURIComponent(id)}`);
+  if (!response.ok) {
+    throw new Error('Failed to load entry');
+  }
+  const payload = await response.json();
+  const detail = normalizeDetail(payload);
+  entryCache.set(id, detail);
+  return detail;
+}
--- a/client/src/assets/react.svg
+++ b/client/src/assets/react.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" aria-hidden="true" role="img" class="iconify iconify--logos" width="35.93" height="32" preserveAspectRatio="xMidYMid meet" viewBox="0 0 256 228"><path fill="#00D8FF" d="M210.483 73.824a171.49 171.49 0 0 0-8.24-2.597c.465-1.9.893-3.777 1.273-5.621c6.238-30.281 2.16-54.676-11.769-62.708c-13.355-7.7-35.196.329-57.254 19.526a171.23 171.23 0 0 0-6.375 5.848a155.866 155.866 0 0 0-4.241-3.917C100.759 3.829 77.587-4.822 63.673 3.233C50.33 10.957 46.379 33.89 51.995 62.588a170.974 170.974 0 0 0 1.892 8.48c-3.28.932-6.445 1.924-9.474 2.98C17.309 83.498 0 98.307 0 113.668c0 15.865 18.582 31.778 46.812 41.427a145.52 145.52 0 0 0 6.921 2.165a167.467 167.467 0 0 0-2.01 9.138c-5.354 28.2-1.173 50.591 12.134 58.266c13.744 7.926 36.812-.22 59.273-19.855a145.567 145.567 0 0 0 5.342-4.923a168.064 168.064 0 0 0 6.92 6.314c21.758 18.722 43.246 26.282 56.54 18.586c13.731-7.949 18.194-32.003 12.4-61.268a145.016 145.016 0 0 0-1.535-6.842c1.62-.48 3.21-.974 4.76-1.488c29.348-9.723 48.443-25.443 48.443-41.52c0-15.417-17.868-30.326-45.517-39.844Zm-6.365 70.984c-1.4.463-2.836.91-4.3 1.345c-3.24-10.257-7.612-21.163-12.963-32.432c5.106-11 9.31-21.767 12.459-31.957c2.619.758 5.16 1.557 7.61 2.4c23.69 8.156 38.14 20.213 38.14 29.504c0 9.896-15.606 22.743-40.946 31.14Zm-10.514 20.834c2.562 12.94 2.927 24.64 1.23 33.787c-1.524 8.219-4.59 13.698-8.382 15.893c-8.067 4.67-25.32-1.4-43.927-17.412a156.726 156.726 0 0 1-6.437-5.87c7.214-7.889 14.423-17.06 21.459-27.246c12.376-1.098 24.068-2.894 34.671-5.345a134.17 134.17 0 0 1 1.386 6.193ZM87.276 214.515c-7.882 2.783-14.16 2.863-17.955.675c-8.075-4.657-11.432-22.636-6.853-46.752a156.923 156.923 0 0 1 1.869-8.499c10.486 2.32 22.093 3.988 34.498 4.994c7.084 9.967 14.501 19.128 21.976 27.15a134.668 134.668 0 0 1-4.877 4.492c-9.933 8.682-19.886 14.842-28.658 17.94ZM50.35 144.747c-12.483-4.267-22.792-9.812-29.858-15.863c-6.35-5.437-9.555-10.836-9.555-15.216c0-9.322 13.897-21.212 37.076-29.293c2.813-.98 5.757-1.905 8.812-2.773c3.204 10.42 7.406 21.315 12.477 32.332c-5.137 11.18-9.399 22.249-12.634 32.792a134.718 134.718 0 0 1-6.318-1.979Zm12.378-84.26c-4.811-24.587-1.616-43.134 6.425-47.789c8.564-4.958 27.502 2.111 47.463 19.835a144.318 144.318 0 0 1 3.841 3.545c-7.438 7.987-14.787 17.08-21.808 26.988c-12.04 1.116-23.565 2.908-34.161 5.309a160.342 160.342 0 0 1-1.76-7.887Zm110.427 27.268a347.8 347.8 0 0 0-7.785-12.803c8.168 1.033 15.994 2.404 23.343 4.08c-2.206 7.072-4.956 14.465-8.193 22.045a381.151 381.151 0 0 0-7.365-13.322Zm-45.032-43.861c5.044 5.465 10.096 11.566 15.065 18.186a322.04 322.04 0 0 0-30.257-.006c4.974-6.559 10.069-12.652 15.192-18.18ZM82.802 87.83a323.167 323.167 0 0 0-7.227 13.238c-3.184-7.553-5.909-14.98-8.134-22.152c7.304-1.634 15.093-2.97 23.209-3.984a321.524 321.524 0 0 0-7.848 12.897Zm8.081 65.352c-8.385-.936-16.291-2.203-23.593-3.793c2.26-7.3 5.045-14.885 8.298-22.6a321.187 321.187 0 0 0 7.257 13.246c2.594 4.48 5.28 8.868 8.038 13.147Zm37.542 31.03c-5.184-5.592-10.354-11.779-15.403-18.433c4.902.192 9.899.29 14.978.29c5.218 0 10.376-.117 15.453-.343c-4.985 6.774-10.018 12.97-15.028 18.486Zm52.198-57.817c3.422 7.8 6.306 15.345 8.596 22.52c-7.422 1.694-15.436 3.058-23.88 4.071a382.417 382.417 0 0 0 7.859-13.026a347.403 347.403 0 0 0 7.425-13.565Zm-16.898 8.101a358.557 358.557 0 0 1-12.281 19.815a329.4 329.4 0 0 1-23.444.823c-7.967 0-15.716-.248-23.178-.732a310.202 310.202 0 0 1-12.513-19.846h.001a307.41 307.41 0 0 1-10.923-20.627a310.278 310.278 0 0 1 10.89-20.637l-.001.001a307.318 307.318 0 0 1 12.413-19.761c7.613-.576 15.42-.876 23.31-.876H128c7.926 0 15.743.303 23.354.883a329.357 329.357 0 0 1 12.335 19.695a358.489 358.489 0 0 1 11.036 20.54a329.472 329.472 0 0 1-11 20.722Zm22.56-122.124c8.572 4.944 11.906 24.881 6.52 51.026c-.344 1.668-.73 3.367-1.15 5.09c-10.622-2.452-22.155-4.275-34.23-5.408c-7.034-10.017-14.323-19.124-21.64-27.008a160.789 160.789 0 0 1 5.888-5.4c18.9-16.447 36.564-22.941 44.612-18.3ZM128 90.808c12.625 0 22.86 10.235 22.86 22.86s-10.235 22.86-22.86 22.86s-22.86-10.235-22.86-22.86s10.235-22.86 22.86-22.86Z"></path></svg>
--- a/client/src/components/EntryCard.tsx
+++ b/client/src/components/EntryCard.tsx
@@ -0,0 +1,26 @@
+import { Link } from 'react-router-dom';
+import type { EntrySummary } from '../types';
+
+interface Props {
+  entry: EntrySummary;
+}
+
+export default function EntryCard({ entry }: Props) {
+  const { counts } = entry;
+  return (
+    <Link to={`/entry/${encodeURIComponent(entry.id)}`} className="entry-card">
+      <div className="entry-card__title">{entry.title}</div>
+      <div className="entry-card__meta">
+        <span className="pill">{entry.mode || 'mixed'}</span>
+        {entry.type && <span className="pill pill--ghost">{entry.type}</span>}
+      </div>
+      <div className="entry-card__counts">
+        <span>Grammar {counts.grammar}</span>
+        <span>Vocab {counts.vocab}</span>
+        <span>Phrases {counts.key_phrases}</span>
+        <span>Conversation {counts.conversation}</span>
+        <span>Quiz {counts.quiz}</span>
+      </div>
+    </Link>
+  );
+}
--- a/client/src/components/ItemPanels.tsx
+++ b/client/src/components/ItemPanels.tsx
@@ -0,0 +1,146 @@
+import type { ConversationItem, GrammarItem, KeyPhraseItem, VocabItem } from '../types';
+
+interface ItemProps<T> {
+  items?: T[];
+}
+
+const renderExample = (item: any) => {
+  const example = item.example || {};
+  const hasExample = example.jp || example.en || example.kana || item.example_jp || item.example_en || item.example_kana;
+  if (!hasExample) return null;
+  return (
+    <div className="item-row">
+      <span className="label">Example</span>
+      <div className="muted">
+        {example.jp || item.example_jp}
+        {example.kana || item.example_kana ? <div className="subline">{example.kana || item.example_kana}</div> : null}
+        {example.en || item.example_en ? <div className="subline">{example.en || item.example_en}</div> : null}
+      </div>
+    </div>
+  );
+};
+
+const renderNote = (item: any) => {
+  const note = item.use_note_en || item.note_en || item.when_to_use_en;
+  if (!note) return null;
+  return (
+    <div className="item-row">
+      <span className="label">Usage</span>
+      <div className="muted">{note}</div>
+    </div>
+  );
+};
+
+const renderRegister = (item: any) => {
+  if (!item.register) return null;
+  return (
+    <div className="item-row">
+      <span className="label">Register</span>
+      <div className="pill pill--ghost">{item.register}</div>
+    </div>
+  );
+};
+
+export function GrammarPanel({ items }: ItemProps<GrammarItem>) {
+  if (!items?.length) return null;
+  return (
+    <section className="panel">
+      <header>
+        <h3>Grammar</h3>
+      </header>
+      <div className="panel-grid">
+        {items.map((item) => (
+          <div key={item.id || item.pattern} className="panel-card">
+            <div className="panel-card__title">{item.pattern || item.jp || item.id}</div>
+            <div className="panel-card__body">
+              {(item.meaning_en || item.meaning) && <div className="muted">{item.meaning_en || item.meaning}</div>}
+              {renderRegister(item)}
+              {renderNote(item)}
+              {renderExample(item)}
+            </div>
+          </div>
+        ))}
+      </div>
+    </section>
+  );
+}
+
+export function VocabPanel({ items }: ItemProps<VocabItem>) {
+  if (!items?.length) return null;
+  return (
+    <section className="panel">
+      <header>
+        <h3>Vocabulary</h3>
+      </header>
+      <div className="panel-grid">
+        {items.map((item) => (
+          <div key={item.id || item.jp} className="panel-card">
+            <div className="panel-card__title">{item.jp || item.id}</div>
+            {(item.kana || item.meaning_en || item.meaning) && (
+              <div className="muted">
+                {item.kana && <div className="subline">{item.kana}</div>}
+                {(item.meaning_en || item.meaning) && <div className="subline">{item.meaning_en || item.meaning}</div>}
+              </div>
+            )}
+            {renderRegister(item)}
+            {renderNote(item)}
+            {renderExample(item)}
+          </div>
+        ))}
+      </div>
+    </section>
+  );
+}
+
+export function KeyPhrasePanel({ items }: ItemProps<KeyPhraseItem>) {
+  if (!items?.length) return null;
+  return (
+    <section className="panel">
+      <header>
+        <h3>Key Phrases</h3>
+      </header>
+      <div className="panel-grid">
+        {items.map((item) => (
+          <div key={item.id || item.jp} className="panel-card">
+            <div className="panel-card__title">{item.jp || item.id}</div>
+            {(item.kana || item.meaning_en || item.meaning) && (
+              <div className="muted">
+                {item.kana && <div className="subline">{item.kana}</div>}
+                {(item.meaning_en || item.meaning) && <div className="subline">{item.meaning_en || item.meaning}</div>}
+              </div>
+            )}
+            {renderRegister(item)}
+            {renderNote(item)}
+            {renderExample(item)}
+          </div>
+        ))}
+      </div>
+    </section>
+  );
+}
+
+export function ConversationPanel({ items }: ItemProps<ConversationItem>) {
+  if (!items?.length) return null;
+  return (
+    <section className="panel">
+      <header>
+        <h3>Conversation</h3>
+      </header>
+      <div className="panel-grid">
+        {items.map((item) => (
+          <div key={item.id || item.jp} className="panel-card">
+            <div className="panel-card__title">{item.jp || item.id}</div>
+            {(item.kana || item.en) && (
+              <div className="muted">
+                {item.kana && <div className="subline">{item.kana}</div>}
+                {item.en && <div className="subline">{item.en}</div>}
+              </div>
+            )}
+            {renderRegister(item)}
+            {renderNote(item)}
+          </div>
+        ))}
+      </div>
+    </section>
+  );
+}
--- a/client/src/components/QuizRunner.tsx
+++ b/client/src/components/QuizRunner.tsx
@@ -0,0 +1,463 @@
+import { useEffect, useMemo, useState } from 'react';
+import { fetchEntries, fetchEntry } from '../api';
+import type { EntryItems, EntrySummary, QuizQuestionWithEntry } from '../types';
+import VideoPlayer from './VideoPlayer';
+
+type Mode = 'all' | 'selected' | 'single';
+
+const TOTAL_QUESTIONS = 10;
+
+interface QuizRunnerProps {
+  defaultMode?: Mode;
+  defaultEntryId?: string;
+}
+
+interface TargetHit {
+  group: string;
+  item: Record<string, any>;
+}
+
+function shuffle<T>(list: T[]) {
+  const copy = [...list];
+  for (let i = copy.length - 1; i > 0; i -= 1) {
+    const j = Math.floor(Math.random() * (i + 1));
+    [copy[i], copy[j]] = [copy[j], copy[i]];
+  }
+  return copy;
+}
+
+const normalize = (val: any) => (val === undefined || val === null ? '' : String(val).trim());
+
+function resolveTargets(question: QuizQuestionWithEntry): TargetHit[] {
+  const targetIds = new Set((question.targets || []).map((t) => normalize(t)));
+  const groups: { label: string; items: any[] }[] = [
+    { label: 'Grammar', items: question.items?.grammar || [] },
+    { label: 'Vocabulary', items: question.items?.vocab || [] },
+    { label: 'Key Phrases', items: question.items?.key_phrases || [] },
+    { label: 'Conversation', items: question.items?.conversation || [] },
+  ];
+
+  const found: TargetHit[] = [];
+  groups.forEach(({ label, items }) => {
+    items.forEach((item) => {
+      if (item?.id && targetIds.has(normalize(item.id))) {
+        found.push({ group: label, item });
+      }
+    });
+  });
+
+  return found;
+}
+
+function deriveCorrectText(question: QuizQuestionWithEntry) {
+  const options: any[] = Array.isArray(question.payload?.options) ? question.payload?.options : [];
+  if (typeof question.answer?.correct_index === 'number' && options[question.answer.correct_index]) {
+    return options[question.answer.correct_index];
+  }
+  if (question.answer?.correct_text) return question.answer.correct_text;
+  if (question.payload?.blanked) return question.payload.blanked;
+  const pairs = Array.isArray(question.payload?.pairs) ? question.payload.pairs : [];
+  if (pairs.length) {
+    return pairs.map((p: any) => `${p.left} → ${p.right}`).join(' | ');
+  }
+  return '';
+}
+
+function checkClozeAnswer(question: QuizQuestionWithEntry, response: string) {
+  if (!response) return false;
+  const expected = [question.answer?.correct_text, question.answer?.correct, question.payload?.blanked].filter(Boolean).map(normalize);
+  const answer = normalize(response);
+  return expected.some((val) => val === answer || val.toLowerCase() === answer.toLowerCase());
+}
+
+function checkMatchAnswer(question: QuizQuestionWithEntry, response: Record<number, string> | null) {
+  const pairs: any[] = Array.isArray(question.payload?.pairs) ? question.payload.pairs : [];
+  if (!pairs.length) return false;
+  return pairs.every((pair, idx) => {
+    const expected = normalize(pair.right);
+    const user = normalize(response?.[idx]);
+    return expected === user;
+  });
+}
+
+function checkMcAnswer(question: QuizQuestionWithEntry, response: number | null) {
+  if (typeof response !== 'number') return false;
+  if (typeof question.answer?.correct_index !== 'number') return false;
+  return response === question.answer.correct_index;
+}
+
+function QuestionRenderer({
+  question,
+  response,
+  onChange,
+}: {
+  question: QuizQuestionWithEntry;
+  response: any;
+  onChange: (val: any) => void;
+}) {
+  const payload = question.payload || {};
+  const type = question.type || '';
+
+  if (type === 'cloze') {
+    const sentence = payload.sentence_jp || payload.sentence || '';
+    return (
+      <div className="question-block">
+        {sentence && <div className="muted">{sentence.replace(payload.blanked || '', '____')}</div>}
+        <input
+          className="input"
+          type="text"
+          placeholder="Type the missing text"
+          value={response || ''}
+          onChange={(e) => onChange(e.target.value)}
+        />
+        {Array.isArray(payload.options) && payload.options.length > 0 && (
+          <div className="option-hints">Hints: {payload.options.join(' • ')}</div>
+        )}
+      </div>
+    );
+  }
+
+  if (type === 'match') {
+    const pairs: any[] = Array.isArray(payload.pairs) ? payload.pairs : [];
+    const rightOptions = useMemo(
+      () => shuffle(pairs.map((p) => p.right).filter(Boolean)),
+      [question.id, question.entryId]
+    );
+    return (
+      <div className="question-block matches">
+        {pairs.map((pair, idx) => (
+          <div key={idx} className="match-row">
+            <div className="match-left">{pair.left}</div>
+            <select
+              className="input"
+              value={response?.[idx] || ''}
+              onChange={(e) => {
+                const current = response && typeof response === 'object' ? response : {};
+                onChange({ ...current, [idx]: e.target.value });
+              }}
+            >
+              <option value="">Match…</option>
+              {rightOptions.map((opt, optionIdx) => (
+                <option key={optionIdx} value={opt}>
+                  {opt}
+                </option>
+              ))}
+            </select>
+          </div>
+        ))}
+      </div>
+    );
+  }
+
+  const options: any[] = Array.isArray(payload.options) ? payload.options : [];
+  if (!options.length) {
+    return <div className="muted">No options provided for this question.</div>;
+  }
+  return (
+    <div className="question-block">
+      {options.map((option, idx) => (
+        <label key={idx} className="option">
+          <input
+            type="radio"
+            checked={response === idx}
+            onChange={() => onChange(idx)}
+            name={`q-${question.id}`}
+          />
+          <span>{option}</span>
+        </label>
+      ))}
+    </div>
+  );
+}
+
+function ExplanationPanel({ question, targets }: { question: QuizQuestionWithEntry; targets: TargetHit[] }) {
+  return (
+    <div className="explanation">
+      <h4>Explanation</h4>
+      {targets.length ? (
+        <div className="explanation-grid">
+          {targets.map(({ group, item }) => (
+            <div key={`${group}-${item.id || item.jp}`} className="panel-card">
+              <div className="panel-card__title">{item.jp || item.pattern || item.id}</div>
+              <div className="muted">{item.meaning_en || item.en || item.when_to_use_en}</div>
+              {item.use_note_en && <div className="subline">{item.use_note_en}</div>}
+              {item.register && <span className="pill pill--ghost">{item.register}</span>}
+              <div className="tag">{group}</div>
+            </div>
+          ))}
+        </div>
+      ) : (
+        <p className="muted">No linked study items were found for this question.</p>
+      )}
+      <VideoPlayer src={question.video_url} />
+    </div>
+  );
+}
+
+export default function QuizRunner({ defaultMode = 'all', defaultEntryId }: QuizRunnerProps) {
+  const [entries, setEntries] = useState<EntrySummary[]>([]);
+  const [loadingEntries, setLoadingEntries] = useState(true);
+  const [mode, setMode] = useState<Mode>(defaultMode);
+  const [selectedIds, setSelectedIds] = useState<string[]>(defaultEntryId ? [defaultEntryId] : []);
+  const [questions, setQuestions] = useState<QuizQuestionWithEntry[]>([]);
+  const [status, setStatus] = useState<'setup' | 'loading' | 'running' | 'finished'>('setup');
+  const [currentIndex, setCurrentIndex] = useState(0);
+  const [score, setScore] = useState(0);
+  const [response, setResponse] = useState<any>(null);
+  const [showResult, setShowResult] = useState(false);
+  const [lastCorrect, setLastCorrect] = useState(false);
+  const [error, setError] = useState<string | null>(null);
+
+  useEffect(() => {
+    setLoadingEntries(true);
+    fetchEntries()
+      .then((data) => setEntries(data))
+      .catch(() => setError('Could not load entries.'))
+      .finally(() => setLoadingEntries(false));
+  }, []);
+
+  useEffect(() => {
+    if (defaultEntryId) {
+      setMode('single');
+      setSelectedIds([defaultEntryId]);
+    }
+  }, [defaultEntryId]);
+
+  const currentQuestion = useMemo(() => questions[currentIndex], [questions, currentIndex]);
+
+  const resetQuestionState = () => {
+    setResponse(null);
+    setShowResult(false);
+    setLastCorrect(false);
+  };
+
+  const startQuiz = async () => {
+    const ids: string[] =
+      mode === 'all'
+        ? entries.map((e) => e.id)
+        : mode === 'selected'
+        ? selectedIds
+        : selectedIds.slice(0, 1);
+
+    if (!ids.length) {
+      setError('Pick at least one entry to quiz on.');
+      return;
+    }
+
+    setError(null);
+    setStatus('loading');
+
+    try {
+      const uniqueIds = Array.from(new Set(ids));
+      const details = await Promise.all(uniqueIds.map((id) => fetchEntry(id)));
+      const pool: QuizQuestionWithEntry[] = details.flatMap((entry) => {
+        const safeItems: EntryItems = entry.items || { grammar: [], vocab: [], conversation: [], key_phrases: [] };
+        return (entry.quiz || []).map((q) => ({
+          ...q,
+          entryId: entry.id,
+          entryTitle: entry.title,
+          items: safeItems,
+          video_url: entry.video_url,
+          targets: q.targets || [],
+          type: q.type || 'unknown',
+          payload: q.payload || {},
+          answer: q.answer || {},
+        }));
+      });
+
+      if (!pool.length) {
+        setError('No quiz questions found in the selected entries.');
+        setStatus('setup');
+        return;
+      }
+
+      const chosen = shuffle(pool).slice(0, Math.min(TOTAL_QUESTIONS, pool.length));
+      setQuestions(chosen);
+      setCurrentIndex(0);
+      setScore(0);
+      resetQuestionState();
+      setStatus('running');
+    } catch (err: any) {
+      setError(err?.message || 'Could not start quiz.');
+      setStatus('setup');
+    }
+  };
+
+  const handleSubmit = (skip = false) => {
+    if (!currentQuestion || showResult) return;
+    let correct = false;
+    if (!skip) {
+      if ((currentQuestion.type || '').startsWith('mc') || currentQuestion.type === 'choose_best_reply') {
+        correct = checkMcAnswer(currentQuestion, response);
+      } else if (currentQuestion.type === 'cloze') {
+        correct = checkClozeAnswer(currentQuestion, response);
+      } else if (currentQuestion.type === 'match') {
+        correct = checkMatchAnswer(currentQuestion, response);
+      } else if (typeof currentQuestion.answer?.correct_index === 'number') {
+        correct = checkMcAnswer(currentQuestion, response);
+      }
+    }
+
+    if (correct) {
+      setScore((s) => s + 1);
+    }
+    setLastCorrect(correct);
+    setShowResult(true);
+  };
+
+  const goNext = () => {
+    if (currentIndex + 1 >= questions.length) {
+      setStatus('finished');
+    } else {
+      setCurrentIndex((idx) => idx + 1);
+      resetQuestionState();
+    }
+  };
+
+  if (loadingEntries) {
+    return <div className="loading">Loading quiz setup…</div>;
+  }
+
+  if (status === 'setup') {
+    return (
+      <div className="quiz-setup">
+        <div className="page-header">
+          <div>
+            <p className="eyebrow">Quiz Wizard</p>
+            <h1>Pick a mode</h1>
+            <p className="muted">Build a 10-question run from all entries, a custom set, or a single reel.</p>
+          </div>
+        </div>
+
+        <div className="mode-switch">
+          <button className={mode === 'all' ? 'button button--solid' : 'button'} onClick={() => setMode('all')}>
+            Mode A · All entries
+          </button>
+          <button className={mode === 'selected' ? 'button button--solid' : 'button'} onClick={() => setMode('selected')}>
+            Mode B · Select entries
+          </button>
+          <button className={mode === 'single' ? 'button button--solid' : 'button'} onClick={() => setMode('single')}>
+            Mode C · Single entry
+          </button>
+        </div>
+
+        {mode === 'selected' && (
+          <div className="selector">
+            <p className="muted">Check the entries you want in the pool.</p>
+            <div className="selector-grid">
+              {entries.map((entry) => (
+                <label key={entry.id} className="selector-row">
+                  <input
+                    type="checkbox"
+                    checked={selectedIds.includes(entry.id)}
+                    onChange={(e) => {
+                      if (e.target.checked) {
+                        setSelectedIds((prev) => [...prev, entry.id]);
+                      } else {
+                        setSelectedIds((prev) => prev.filter((id) => id !== entry.id));
+                      }
+                    }}
+                  />
+                  <span>{entry.title}</span>
+                </label>
+              ))}
+            </div>
+          </div>
+        )}
+
+        {mode === 'single' && (
+          <div className="selector">
+            <p className="muted">Pick the entry to drill.</p>
+            <select
+              className="input"
+              value={selectedIds[0] || ''}
+              onChange={(e) => setSelectedIds(e.target.value ? [e.target.value] : [])}
+            >
+              <option value="">Select an entry…</option>
+              {entries.map((entry) => (
+                <option key={entry.id} value={entry.id}>
+                  {entry.title}
+                </option>
+              ))}
+            </select>
+          </div>
+        )}
+
+        {error && <div className="error">{error}</div>}
+
+        <button className="button button--primary" onClick={startQuiz}>
+          Start quiz
+        </button>
+      </div>
+    );
+  }
+
+  if (status === 'loading') {
+    return <div className="loading">Building your quiz…</div>;
+  }
+
+  if (status === 'finished') {
+    return (
+      <div className="quiz-finished">
+        <h2>Nice work!</h2>
+        <p className="muted">You scored {score} out of {questions.length}.</p>
+        <div className="actions">
+          <button className="button" onClick={() => setStatus('setup')}>
+            Play again
+          </button>
+        </div>
+      </div>
+    );
+  }
+
+  if (!currentQuestion) {
+    return <div className="error">No questions available.</div>;
+  }
+
+  const targets = resolveTargets(currentQuestion);
+  const correctText = deriveCorrectText(currentQuestion);
+
+  return (
+    <div className="quiz-runner">
+      <div className="quiz-top">
+        <div>
+          <p className="eyebrow">{currentQuestion.entryTitle}</p>
+          <h2>{currentQuestion.prompt_en || 'Answer the prompt'}</h2>
+        </div>
+        <div className="score-box">
+          <div className="muted">{currentIndex + 1} / {questions.length}</div>
+          <div className="score">Score: {score}</div>
+        </div>
+      </div>
+
+      <QuestionRenderer question={currentQuestion} response={response} onChange={setResponse} />
+
+      {showResult && (
+        <div className={lastCorrect ? 'callout success' : 'callout'}>
+          {lastCorrect ? 'Correct!' : 'Not quite.'}
+          {!lastCorrect && correctText && <div className="subline">Answer: {correctText}</div>}
+        </div>
+      )}
+
+      <div className="quiz-actions">
+        {!showResult && (
+          <>
+            <button className="button" onClick={() => handleSubmit(false)}>
+              Submit
+            </button>
+            <button className="button button--ghost" onClick={() => handleSubmit(true)}>
+              Don’t know
+            </button>
+          </>
+        )}
+        {showResult && (
+          <button className="button button--primary" onClick={goNext}>
+            {currentIndex + 1 === questions.length ? 'Finish' : 'Next'}
+          </button>
+        )}
+      </div>
+
+      {showResult && !lastCorrect && <ExplanationPanel question={currentQuestion} targets={targets} />}
+    </div>
+  );
+}
--- a/client/src/components/VideoPlayer.tsx
+++ b/client/src/components/VideoPlayer.tsx
@@ -0,0 +1,12 @@
+interface Props {
+  src: string;
+}
+
+export default function VideoPlayer({ src }: Props) {
+  if (!src) return null;
+  return (
+    <div className="video-shell">
+      <video controls src={src} preload="metadata" />
+    </div>
+  );
+}
--- a/client/src/index.css
+++ b/client/src/index.css
@@ -0,0 +1,429 @@
+@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;600;700&family=DM+Sans:wght@400;500;700&display=swap');
+
+:root {
+  font-family: 'DM Sans', 'Space Grotesk', sans-serif;
+  line-height: 1.6;
+  font-weight: 400;
+  color: #0f172a;
+  background: radial-gradient(circle at 10% 20%, rgba(255, 192, 203, 0.25), transparent 35%),
+    radial-gradient(circle at 80% 0%, rgba(109, 195, 255, 0.2), transparent 32%),
+    #f6f7fb;
+  min-height: 100vh;
+  --accent: #ff5a3c;
+  --card: #ffffff;
+  --border: #e5e7eb;
+  --muted: #4b5563;
+}
+
+* {
+  box-sizing: border-box;
+}
+
+body {
+  margin: 0;
+  padding: 0;
+  color: inherit;
+  background: inherit;
+}
+
+a {
+  color: inherit;
+  text-decoration: none;
+}
+
+p {
+  margin: 0;
+}
+
+h1,
+h2,
+h3,
+h4 {
+  margin: 0;
+  letter-spacing: -0.01em;
+}
+
+.main {
+  padding-top: 0.5rem;
+}
+
+.page-header {
+  display: flex;
+  align-items: flex-start;
+  justify-content: space-between;
+  gap: 1rem;
+  margin: 1rem 0 1.5rem;
+}
+
+.eyebrow {
+  text-transform: uppercase;
+  font-size: 0.75rem;
+  letter-spacing: 0.25em;
+  color: var(--muted);
+  margin-bottom: 0.35rem;
+}
+
+.muted {
+  color: var(--muted);
+}
+
+.grid {
+  display: grid;
+  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
+  gap: 1rem;
+}
+
+.entry-card {
+  display: block;
+  background: var(--card);
+  padding: 1rem;
+  border-radius: 16px;
+  border: 1px solid var(--border);
+  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
+  transition: transform 150ms ease, box-shadow 150ms ease;
+}
+
+.entry-card:hover {
+  transform: translateY(-4px);
+  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.08);
+}
+
+.entry-card__title {
+  font-weight: 700;
+  margin-bottom: 0.35rem;
+}
+
+.entry-card__meta {
+  display: flex;
+  gap: 0.5rem;
+  margin-bottom: 0.5rem;
+}
+
+.entry-card__counts {
+  display: grid;
+  grid-template-columns: repeat(2, minmax(0, 1fr));
+  gap: 0.35rem;
+  font-size: 0.9rem;
+  color: var(--muted);
+}
+
+.pill {
+  display: inline-flex;
+  align-items: center;
+  gap: 0.25rem;
+  padding: 0.25rem 0.6rem;
+  border-radius: 999px;
+  background: rgba(0, 0, 0, 0.06);
+  font-size: 0.85rem;
+  font-weight: 600;
+}
+
+.pill--ghost {
+  background: rgba(0, 0, 0, 0.04);
+  color: var(--muted);
+}
+
+.pill--accent {
+  background: rgba(255, 90, 60, 0.1);
+  color: #d9482b;
+}
+
+.button {
+  border: 1px solid var(--border);
+  border-radius: 14px;
+  padding: 0.65rem 1rem;
+  background: #fff;
+  cursor: pointer;
+  font-weight: 700;
+  transition: all 120ms ease;
+}
+
+.button:hover {
+  transform: translateY(-1px);
+}
+
+.button--primary,
+.button--solid {
+  background: var(--accent);
+  color: #fff;
+  border-color: var(--accent);
+}
+
+.button--ghost {
+  background: transparent;
+  color: inherit;
+}
+
+.actions {
+  display: flex;
+  gap: 0.75rem;
+  align-items: center;
+}
+
+.video-shell {
+  margin: 1rem 0;
+  background: #000;
+  border-radius: 16px;
+  overflow: hidden;
+  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.2);
+}
+
+.video-shell video {
+  width: 100%;
+  height: auto;
+  display: block;
+}
+
+.meta-box {
+  display: grid;
+  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
+  gap: 1rem;
+  margin: 1rem 0 2rem;
+  padding: 1rem;
+  background: var(--card);
+  border-radius: 16px;
+  border: 1px solid var(--border);
+}
+
+.label {
+  font-size: 0.85rem;
+  color: var(--muted);
+}
+
+.code {
+  word-break: break-all;
+  font-family: 'Space Grotesk', monospace;
+}
+
+.crumbs {
+  margin: 0.5rem 0;
+}
+
+.link {
+  background: transparent;
+}
+
+.panel {
+  margin: 1.5rem 0;
+}
+
+.panel-grid {
+  display: grid;
+  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
+  gap: 0.75rem;
+}
+
+.panel-card {
+  background: var(--card);
+  border: 1px solid var(--border);
+  border-radius: 14px;
+  padding: 0.85rem;
+  position: relative;
+}
+
+.panel-card__title {
+  font-weight: 700;
+  margin-bottom: 0.25rem;
+}
+
+.panel-card__body {
+  color: var(--muted);
+  font-size: 0.95rem;
+}
+
+.tag {
+  position: absolute;
+  top: 0.65rem;
+  right: 0.65rem;
+  font-size: 0.7rem;
+  color: var(--muted);
+}
+
+.subline {
+  color: var(--muted);
+  font-size: 0.9rem;
+}
+
+.item-row {
+  margin-top: 0.35rem;
+}
+
+.chips {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 0.35rem;
+  margin-top: 0.5rem;
+}
+
+.loading,
+.error {
+  padding: 1rem;
+  background: var(--card);
+  border-radius: 12px;
+  border: 1px solid var(--border);
+  color: #111827;
+}
+
+.error {
+  border-color: #ef4444;
+}
+
+.input {
+  width: 100%;
+  padding: 0.65rem 0.75rem;
+  border-radius: 12px;
+  border: 1px solid var(--border);
+  background: #fff;
+  font-size: 1rem;
+}
+
+.selector {
+  background: var(--card);
+  padding: 1rem;
+  border-radius: 12px;
+  border: 1px solid var(--border);
+  margin: 1rem 0;
+}
+
+.selector-grid {
+  max-height: 260px;
+  overflow: auto;
+  display: grid;
+  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
+  gap: 0.35rem;
+}
+
+.selector-row {
+  display: flex;
+  gap: 0.5rem;
+  align-items: center;
+  background: #f9fafb;
+  padding: 0.45rem 0.6rem;
+  border-radius: 10px;
+}
+
+.mode-switch {
+  display: flex;
+  gap: 0.65rem;
+  flex-wrap: wrap;
+  margin: 1rem 0;
+}
+
+.quiz-setup {
+  background: var(--card);
+  padding: 1.25rem;
+  border-radius: 14px;
+  border: 1px solid var(--border);
+  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.05);
+}
+
+.quiz-runner {
+  background: var(--card);
+  padding: 1.25rem;
+  border-radius: 16px;
+  border: 1px solid var(--border);
+  box-shadow: 0 14px 35px rgba(0, 0, 0, 0.05);
+}
+
+.quiz-top {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 1rem;
+}
+
+.score-box {
+  text-align: right;
+}
+
+.score {
+  font-weight: 800;
+}
+
+.question-block {
+  margin: 1rem 0;
+}
+
+.option {
+  display: flex;
+  gap: 0.5rem;
+  align-items: center;
+  background: #f9fafb;
+  border-radius: 10px;
+  padding: 0.5rem 0.75rem;
+  margin-bottom: 0.35rem;
+}
+
+.matches {
+  display: flex;
+  flex-direction: column;
+  gap: 0.5rem;
+}
+
+.match-row {
+  display: grid;
+  grid-template-columns: 1fr 1fr;
+  gap: 0.5rem;
+  align-items: center;
+}
+
+.match-left {
+  font-weight: 700;
+}
+
+.option-hints {
+  font-size: 0.9rem;
+  color: var(--muted);
+}
+
+.quiz-actions {
+  display: flex;
+  gap: 0.5rem;
+  margin: 0.5rem 0 1rem;
+}
+
+.callout {
+  padding: 0.85rem 1rem;
+  border-radius: 12px;
+  border: 1px solid var(--border);
+  background: #fff6f4;
+  color: #d9482b;
+}
+
+.callout.success {
+  background: #e5fbef;
+  color: #0f9d58;
+}
+
+.explanation {
+  margin-top: 1rem;
+  padding-top: 0.5rem;
+  border-top: 1px solid var(--border);
+}
+
+.explanation-grid {
+  display: grid;
+  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
+  gap: 0.75rem;
+  margin-bottom: 0.75rem;
+}
+
+.quiz-finished {
+  background: var(--card);
+  padding: 1.5rem;
+  border-radius: 14px;
+  border: 1px solid var(--border);
+  text-align: center;
+}
+
+@media (max-width: 720px) {
+  .page-header,
+  .quiz-top {
+    flex-direction: column;
+    align-items: flex-start;
+  }
+
+  .match-row {
+    grid-template-columns: 1fr;
+  }
+}
--- a/client/src/main.tsx
+++ b/client/src/main.tsx
@@ -0,0 +1,13 @@
+import { StrictMode } from 'react';
+import { createRoot } from 'react-dom/client';
+import { BrowserRouter } from 'react-router-dom';
+import './index.css';
+import App from './App';
+
+createRoot(document.getElementById('root')!).render(
+  <StrictMode>
+    <BrowserRouter>
+      <App />
+    </BrowserRouter>
+  </StrictMode>
+);
--- a/client/src/pages/EntryPage.tsx
+++ b/client/src/pages/EntryPage.tsx
@@ -0,0 +1,88 @@
+import { useEffect, useMemo, useState } from 'react';
+import { Link, useNavigate, useParams } from 'react-router-dom';
+import { fetchEntry } from '../api';
+import VideoPlayer from '../components/VideoPlayer';
+import { ConversationPanel, GrammarPanel, KeyPhrasePanel, VocabPanel } from '../components/ItemPanels';
+import type { EntryDetail } from '../types';
+
+export default function EntryPage() {
+  const { idEncoded } = useParams();
+  const navigate = useNavigate();
+  const [entry, setEntry] = useState<EntryDetail | null>(null);
+  const [loading, setLoading] = useState(true);
+  const [error, setError] = useState<string | null>(null);
+
+  const entryId = useMemo(() => {
+    try {
+      return decodeURIComponent(idEncoded || '');
+    } catch {
+      return idEncoded || '';
+    }
+  }, [idEncoded]);
+
+  useEffect(() => {
+    if (!entryId) return;
+    setLoading(true);
+    fetchEntry(entryId)
+      .then((data) => setEntry(data))
+      .catch(() => setError('Entry not found'))
+      .finally(() => setLoading(false));
+  }, [entryId]);
+
+  if (!entryId) {
+    return <div className="error">No entry id provided.</div>;
+  }
+
+  if (loading) return <div className="loading">Loading entry…</div>;
+  if (error || !entry) return <div className="error">{error || 'Entry not found.'}</div>;
+
+  const counts = entry.counts || { grammar: 0, vocab: 0, key_phrases: 0, conversation: 0, quiz: 0 };
+  const quizLink = `/quiz?mode=entry&id=${encodeURIComponent(entry.id)}`;
+
+  return (
+    <div className="entry-page">
+      <div className="crumbs">
+        <button className="button button--ghost" onClick={() => navigate(-1)}>← Back</button>
+      </div>
+      <div className="page-header">
+        <div>
+          <p className="eyebrow">{entry.meta?.mode || 'mode not set'}</p>
+          <h1>{entry.title}</h1>
+          <p className="muted">{entry.meta?.type}</p>
+          <div className="chips">
+            <span className="pill">Grammar {counts.grammar}</span>
+            <span className="pill">Vocab {counts.vocab}</span>
+            <span className="pill">Phrases {counts.key_phrases}</span>
+            <span className="pill">Conversation {counts.conversation}</span>
+            <span className="pill pill--accent">Quiz {counts.quiz}</span>
+          </div>
+        </div>
+        <div className="actions">
+          <Link className="button" to={quizLink}>Start quiz (this entry)</Link>
+        </div>
+      </div>
+
+      <VideoPlayer src={entry.video_url} />
+
+      <div className="meta-box">
+        <div>
+          <div className="label">Mode</div>
+          <div>{entry.meta?.mode || 'n/a'}</div>
+        </div>
+        <div>
+          <div className="label">Type</div>
+          <div>{entry.meta?.type || 'n/a'}</div>
+        </div>
+        <div>
+          <div className="label">Entry ID</div>
+          <div className="muted code">{entry.id}</div>
+        </div>
+      </div>
+
+      <GrammarPanel items={entry.items?.grammar} />
+      <VocabPanel items={entry.items?.vocab} />
+      <KeyPhrasePanel items={entry.items?.key_phrases} />
+      <ConversationPanel items={entry.items?.conversation} />
+    </div>
+  );
+}
--- a/client/src/pages/OverviewPage.tsx
+++ b/client/src/pages/OverviewPage.tsx
@@ -0,0 +1,43 @@
+import { useEffect, useState } from 'react';
+import { Link } from 'react-router-dom';
+import EntryCard from '../components/EntryCard';
+import { fetchEntries } from '../api';
+import type { EntrySummary } from '../types';
+
+export default function OverviewPage() {
+  const [entries, setEntries] = useState<EntrySummary[]>([]);
+  const [loading, setLoading] = useState(true);
+  const [error, setError] = useState<string | null>(null);
+
+  useEffect(() => {
+    fetchEntries()
+      .then((data) => setEntries(data))
+      .catch(() => setError('Could not load entries'))
+      .finally(() => setLoading(false));
+  }, []);
+
+  if (loading) return <div className="loading">Loading entries…</div>;
+  if (error) return <div className="error">{error}</div>;
+
+  return (
+    <div>
+      <div className="page-header">
+        <div>
+          <p className="eyebrow">IG Japanese Quizzer</p>
+          <h1>Choose a reel to study</h1>
+          <p className="muted">Each card bundles grammar, vocab, phrases, and quizzes pulled from your local data folder.</p>
+        </div>
+        <Link className="button" to="/quiz">Jump to Quiz Wizard</Link>
+      </div>
+      {entries.length === 0 ? (
+        <div className="error">No entries detected in data/. Add mp4 + json pairs and restart the server.</div>
+      ) : (
+        <div className="grid">
+          {entries.map((entry) => (
+            <EntryCard key={entry.id} entry={entry} />
+          ))}
+        </div>
+      )}
+    </div>
+  );
+}
--- a/client/src/pages/QuizPage.tsx
+++ b/client/src/pages/QuizPage.tsx
@@ -0,0 +1,25 @@
+import { useMemo } from 'react';
+import { useSearchParams } from 'react-router-dom';
+import QuizRunner from '../components/QuizRunner';
+
+export default function QuizPage() {
+  const [params] = useSearchParams();
+
+  const { mode, entryId } = useMemo(() => {
+    const modeParam = params.get('mode');
+    const idParam = params.get('id');
+    let decodedId: string | undefined;
+    if (idParam) {
+      try {
+        decodedId = decodeURIComponent(idParam);
+      } catch {
+        decodedId = idParam;
+      }
+    }
+    return { mode: modeParam, entryId: decodedId };
+  }, [params]);
+
+  const defaultMode = mode === 'entry' ? 'single' : mode === 'selected' ? 'selected' : 'all';
+
+  return <QuizRunner defaultMode={defaultMode} defaultEntryId={entryId} />;
+}
--- a/client/src/types.ts
+++ b/client/src/types.ts
@@ -0,0 +1,92 @@
+export interface ExampleBlock {
+  jp?: string;
+  kana?: string;
+  en?: string;
+}
+
+export interface BaseItem {
+  id?: string;
+  jp?: string;
+  kana?: string;
+  meaning_en?: string;
+  meaning?: string;
+  use_note_en?: string;
+  when_to_use_en?: string;
+  register?: string;
+  note_en?: string;
+  example?: ExampleBlock;
+  example_jp?: string;
+  example_kana?: string;
+  example_en?: string;
+}
+
+export interface GrammarItem extends BaseItem {
+  pattern?: string;
+}
+
+export interface VocabItem extends BaseItem {}
+
+export interface ConversationItem extends BaseItem {
+  en?: string;
+}
+
+export interface KeyPhraseItem extends BaseItem {}
+
+export interface EntryItems {
+  grammar: GrammarItem[];
+  vocab: VocabItem[];
+  conversation: ConversationItem[];
+  key_phrases: KeyPhraseItem[];
+}
+
+export interface EntryCounts {
+  grammar: number;
+  vocab: number;
+  key_phrases: number;
+  conversation: number;
+  quiz: number;
+}
+
+export interface EntrySummary {
+  id: string;
+  title: string;
+  mode?: string;
+  type?: string;
+  counts: EntryCounts;
+  video_url: string;
+}
+
+export interface EntryDetail {
+  id: string;
+  title: string;
+  meta?: {
+    mode?: string;
+    type?: string;
+    title_en?: string;
+  };
+  items: EntryItems;
+  quiz: QuizQuestion[];
+  ui_hints?: {
+    recommended_order?: (string | number)[];
+    show_first?: string;
+    explain_on_fail?: boolean;
+  };
+  video_url: string;
+  counts: EntryCounts;
+}
+
+export interface QuizQuestion {
+  id?: string | number;
+  targets?: (string | number)[];
+  type?: string;
+  prompt_en?: string;
+  payload?: Record<string, any>;
+  answer?: Record<string, any>;
+}
+
+export interface QuizQuestionWithEntry extends QuizQuestion {
+  entryId: string;
+  entryTitle: string;
+  items: EntryItems;
+  video_url: string;
+}
--- a/client/tsconfig.app.json
+++ b/client/tsconfig.app.json
@@ -0,0 +1,28 @@
+{
+  "compilerOptions": {
+    "tsBuildInfoFile": "./node_modules/.tmp/tsconfig.app.tsbuildinfo",
+    "target": "ES2022",
+    "useDefineForClassFields": true,
+    "lib": ["ES2022", "DOM", "DOM.Iterable"],
+    "module": "ESNext",
+    "types": ["vite/client"],
+    "skipLibCheck": true,
+
+    /* Bundler mode */
+    "moduleResolution": "bundler",
+    "allowImportingTsExtensions": true,
+    "verbatimModuleSyntax": true,
+    "moduleDetection": "force",
+    "noEmit": true,
+    "jsx": "react-jsx",
+
+    /* Linting */
+    "strict": true,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "erasableSyntaxOnly": true,
+    "noFallthroughCasesInSwitch": true,
+    "noUncheckedSideEffectImports": true
+  },
+  "include": ["src"]
+}
--- a/client/tsconfig.json
+++ b/client/tsconfig.json
@@ -0,0 +1,7 @@
+{
+  "files": [],
+  "references": [
+    { "path": "./tsconfig.app.json" },
+    { "path": "./tsconfig.node.json" }
+  ]
+}
--- a/client/tsconfig.node.json
+++ b/client/tsconfig.node.json
@@ -0,0 +1,26 @@
+{
+  "compilerOptions": {
+    "tsBuildInfoFile": "./node_modules/.tmp/tsconfig.node.tsbuildinfo",
+    "target": "ES2023",
+    "lib": ["ES2023"],
+    "module": "ESNext",
+    "types": ["node"],
+    "skipLibCheck": true,
+
+    /* Bundler mode */
+    "moduleResolution": "bundler",
+    "allowImportingTsExtensions": true,
+    "verbatimModuleSyntax": true,
+    "moduleDetection": "force",
+    "noEmit": true,
+
+    /* Linting */
+    "strict": true,
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "erasableSyntaxOnly": true,
+    "noFallthroughCasesInSwitch": true,
+    "noUncheckedSideEffectImports": true
+  },
+  "include": ["vite.config.ts"]
+}
--- a/client/vite.config.ts
+++ b/client/vite.config.ts
@@ -0,0 +1,13 @@
+import { defineConfig } from 'vite';
+import react from '@vitejs/plugin-react';
+
+export default defineConfig({
+  plugins: [react()],
+  server: {
+    port: 5173,
+    proxy: {
+      '/api': 'http://localhost:5174',
+      '/data': 'http://localhost:5174',
+    },
+  },
+});
--- a/gemini_replicate_batch.py
+++ b/gemini_replicate_batch.py
@@ -0,0 +1,358 @@
+#!/usr/bin/env python3
+"""
+gemini_replicate_batch.py
+
+Batch-generate <ID>.json files for Instagram reels using Replicate's
+google/gemini-2.5-flash model with dynamic_thinking enabled.
+
+Input:  data/**/<ID>.mp4        (any subfolder under data)
+Output: data/**/<ID>.json       (parsed JSON, next to video)
+        data/**/<ID>.raw.txt    (raw model output, next to video)
+
+Usage:
+  python3 gemini_replicate_batch.py --data data
+  python3 gemini_replicate_batch.py --data data --only-missing
+  python3 gemini_replicate_batch.py --data data --prompt-file prompt.txt
+  python3 gemini_replicate_batch.py --data data --max-output-tokens 12000
+"""
+
+from __future__ import annotations
+
+import argparse
+import json
+import os
+import re
+import sys
+import time
+from pathlib import Path
+from typing import Any, Dict, Optional
+
+import replicate
+
+
+DEFAULT_PROMPT = r"""
+You analyze an Instagram-style Japanese language video.
+The video is either Japanese-only or English+Japanese.
+
+Goal: Create a compact learning JSON for a custom quiz website.
+The website will ask the user questions; if the user is wrong or taps "Don't know",
+we will show the explanation from this JSON and the original IG media.
+
+TOKEN BUDGET:
+Be concise. Do not duplicate explanations inside questions.
+
+STRICT RULES:
+1) Do not invent. Only include words/phrases/grammar that clearly appear in the video.
+2) For every Japanese string containing kanji, provide a full hiragana reading in a separate field "kana".
+3) Keep it small:
+   - grammar: max 2
+   - vocab: max 10
+   - conversation lines: max 10
+   - key_phrases: max 10
+4) NO timestamps. NO evidence_quote. NO source fields. NO confidence fields.
+5) Questions MUST reference items by id (do not repeat long explanations in questions).
+6) Provide 1–3 questions per item (depending on usefulness). Prefer: cloze, multiple choice, match, register-choice.
+
+OUTPUT:
+Return ONLY valid JSON (no markdown). UTF-8 Japanese.
+
+SCHEMA:
+
+{
+  "meta": {
+    "mode": "ja_only|en+ja",
+    "type": "grammar|vocab|conversation|mixed|unknown",
+    "title_en": "short title (5-8 words max)"
+  },
+  "items": {
+    "grammar": [
+      {
+        "id": "g1",
+        "pattern": "string",
+        "meaning_en": "one line",
+        "use_note_en": "1-2 lines max",
+        "register": "polite|neutral|casual|slang|formal|unknown",
+        "example": { "jp": "string", "kana": "string", "en": "string" }
+      }
+    ],
+    "vocab": [
+      {
+        "id": "v1",
+        "jp": "surface form",
+        "kana": "hiragana reading",
+        "meaning_en": "short",
+        "register": "polite|neutral|casual|slang|formal|unknown",
+        "note_en": "optional, 1 line max",
+        "example": { "jp": "optional", "kana": "optional", "en": "optional" }
+      }
+    ],
+    "conversation": [
+      {
+        "id": "c1",
+        "jp": "exact line",
+        "kana": "hiragana reading",
+        "en": "translation",
+        "register": "polite|neutral|casual|slang|mixed|unknown"
+      }
+    ],
+    "key_phrases": [
+      {
+        "id": "k1",
+        "jp": "phrase",
+        "kana": "reading",
+        "meaning_en": "short",
+        "when_to_use_en": "1-2 lines max",
+        "register": "polite|neutral|casual|slang|formal|unknown"
+      }
+    ]
+  },
+  "quiz": [
+    {
+      "id": "q1",
+      "targets": ["k1"],
+      "type": "mc_meaning|mc_register|cloze|match|choose_best_reply",
+      "prompt_en": "string",
+      "payload": {
+        "sentence_jp": "optional",
+        "sentence_kana": "optional",
+        "blanked": "optional",
+        "options": ["A","B","C","D"],
+        "pairs": [{"left":"","right":""}]
+      },
+      "answer": {
+        "correct_index": 0,
+        "correct_text": "optional"
+      }
+    }
+  ],
+  "ui_hints": {
+    "recommended_order": ["g1","k1","v1"],
+    "show_first": "quiz",
+    "explain_on_fail": true
+  }
+}
+
+QUESTION GUIDELINES:
+- For each grammar item: at least 1 cloze question + 1 meaning/usage question.
+- For vocab/key_phrases: at least 1 meaning MC and optionally 1 register/situation question.
+- For conversation lines: optionally “what does this mean” or “best reply”.
+- Keep prompts short. Do not restate long explanations (shown after fail).
+
+Return ONLY the JSON object. No markdown fences.
+""".strip()
+
+
+def load_env_files(paths: list[Path]) -> None:
+    """
+    Load simple KEY=VALUE pairs from one or more .env files without
+    overriding existing environment variables.
+    """
+    seen = set()
+    for path in paths:
+        try:
+            resolved = path.resolve()
+        except FileNotFoundError:
+            continue
+        if resolved in seen or not resolved.exists():
+            continue
+        seen.add(resolved)
+
+        for line in resolved.read_text(encoding="utf-8").splitlines():
+            line = line.strip()
+            if not line or line.startswith("#") or "=" not in line:
+                continue
+
+            key, value = line.split("=", 1)
+            key = key.strip().removeprefix("export ").strip()
+            value = value.strip()
+            if value and len(value) >= 2 and value[0] == value[-1] and value[0] in {"'", '"'}:
+                value = value[1:-1]
+            if key:
+                os.environ.setdefault(key, value)
+
+
+def strip_code_fences(text: str) -> str:
+    # Remove ```json ... ``` or ``` ... ```
+    text = text.strip()
+    text = re.sub(r"^\s*```(?:json)?\s*", "", text, flags=re.IGNORECASE)
+    text = re.sub(r"\s*```\s*$", "", text)
+    return text.strip()
+
+
+def extract_json_object(text: str) -> Dict[str, Any]:
+    """
+    Try to recover JSON if the model wrapped it with text or fences.
+    """
+    cleaned = strip_code_fences(text)
+
+    # If it's already pure JSON:
+    try:
+        return json.loads(cleaned)
+    except Exception:
+        pass
+
+    # Otherwise, take substring from first { to last }
+    start = cleaned.find("{")
+    end = cleaned.rfind("}")
+    if start == -1 or end == -1 or end <= start:
+        raise ValueError("Could not locate JSON object in model output.")
+
+    snippet = cleaned[start : end + 1].strip()
+    return json.loads(snippet)
+
+
+def validate_minimal_schema(obj: Dict[str, Any]) -> None:
+    # Minimal checks only (Gemini can be slightly variable)
+    if not isinstance(obj, dict):
+        raise ValueError("Top-level JSON is not an object.")
+    for key in ("meta", "items", "quiz"):
+        if key not in obj:
+            raise ValueError(f"Missing required top-level key: {key}")
+    if "title_en" not in obj["meta"]:
+        raise ValueError("meta.title_en missing")
+    if not isinstance(obj["quiz"], list):
+        raise ValueError("quiz must be an array")
+
+
+def run_gemini_on_video(
+    video_path: Path,
+    video_url: str,
+    prompt: str,
+    *,
+    top_p: float,
+    temperature: float,
+    dynamic_thinking: bool,
+    max_output_tokens: int,
+    client: replicate.Client,
+    prefer_wait_seconds: Optional[int] = None,
+) -> str:
+    """
+    Calls Replicate model and returns raw text output.
+    """
+    inp = {
+        "top_p": top_p,
+        "temperature": temperature,
+        "dynamic_thinking": dynamic_thinking,
+        "max_output_tokens": max_output_tokens,
+        "prompt": prompt,
+        "images": [],
+        "videos": [video_url],
+    }
+
+    try:
+        out = client.run("google/gemini-2.5-flash", input=inp)
+        if isinstance(out, str):
+            return out
+        if isinstance(out, list):
+            return "".join(str(x) for x in out)
+        return str(out)
+    except Exception as e:
+        raise RuntimeError(f"Replicate call failed for {video_path.name}: {e}") from e
+
+
+def main() -> None:
+    ap = argparse.ArgumentParser()
+    ap.add_argument("--data", default="data", help="Data directory containing .mp4 files (default: data)")
+    ap.add_argument("--prompt-file", default=None, help="Optional prompt.txt to override the default prompt")
+    ap.add_argument("--only-missing", action="store_true", help="Only process videos without an existing .json")
+    ap.add_argument("--overwrite", action="store_true", help="Overwrite existing .json outputs")
+    ap.add_argument("--sleep", type=float, default=0.0, help="Sleep seconds between requests (default: 0)")
+    ap.add_argument("--top-p", type=float, default=0.95)
+    ap.add_argument("--temperature", type=float, default=0.7)
+    ap.add_argument("--dynamic-thinking", action="store_true", default=True,
+                    help="Enable dynamic_thinking (default: ON)")
+    ap.add_argument("--max-output-tokens", type=int, default=12000,
+                    help="Max output tokens (default: 12000; raise if you need bigger JSON)")
+    ap.add_argument("--remote-base-url", default=None,
+                    help="Base URL where the --data tree is mirrored (e.g., https://example.com/data)")
+    args = ap.parse_args()
+
+    script_dir = Path(__file__).resolve().parent
+    load_env_files([Path.cwd() / ".env", script_dir / ".env"])
+
+    token = os.environ.get("REPLICATE_API_TOKEN") or os.environ.get("REPLICATE_API_KEY")
+    if token and not os.environ.get("REPLICATE_API_TOKEN"):
+        os.environ["REPLICATE_API_TOKEN"] = token  # replicate library expects this name
+    if not token:
+        print("ERROR: REPLICATE_API_TOKEN not set.", file=sys.stderr)
+        sys.exit(2)
+
+    base_url = args.remote_base_url or os.environ.get("REMOTE_BASE_URL")
+    if not base_url:
+        print("ERROR: --remote-base-url or REMOTE_BASE_URL env var is required (public URL of mirrored data)", file=sys.stderr)
+        sys.exit(2)
+    base_url = base_url.rstrip("/")
+
+    client = replicate.Client()
+
+    data_dir = Path(args.data).expanduser().resolve()
+    if not data_dir.exists():
+        print(f"ERROR: data dir not found: {data_dir}", file=sys.stderr)
+        sys.exit(2)
+
+    prompt = DEFAULT_PROMPT
+    if args.prompt_file:
+        prompt_path = Path(args.prompt_file).expanduser().resolve()
+        prompt = prompt_path.read_text(encoding="utf-8").strip()
+
+    mp4s = sorted(data_dir.rglob("*.mp4"))
+    if not mp4s:
+        print(f"No .mp4 files found under {data_dir}")
+        return
+
+    print(f"Found {len(mp4s)} videos under {data_dir}")
+
+    for video_path in mp4s:
+        stem = video_path.stem
+        out_json = video_path.with_suffix(".json")
+        out_raw = video_path.with_suffix(".raw.txt")
+        rel_video = video_path.relative_to(data_dir)
+        video_url = f"{base_url}/{rel_video.as_posix()}"
+
+        if out_json.exists() and args.only_missing:
+            print(f"SKIP (exists): {rel_video}")
+            continue
+        if out_json.exists() and (not args.overwrite) and (not args.only_missing):
+            print(f"SKIP (use --overwrite to replace): {rel_video}")
+            continue
+
+        # Quick size warning for local uploads
+        size_mb = video_path.stat().st_size / (1024 * 1024)
+        if size_mb > 150:
+            print(f"WARNING: {video_path.name} is {size_mb:.1f}MB (>150MB). "
+                  f"Downloads from the remote server may be slow.")
+
+        print(f"RUN: {rel_video}")
+
+        try:
+            raw = run_gemini_on_video(
+                video_path,
+                video_url,
+                prompt,
+                top_p=args.top_p,
+                temperature=args.temperature,
+                dynamic_thinking=True,  # you asked for this explicitly
+                max_output_tokens=args.max_output_tokens,
+                client=client,
+            )
+
+            out_raw.write_text(raw, encoding="utf-8")
+
+            obj = extract_json_object(raw)
+            validate_minimal_schema(obj)
+
+            out_json.write_text(json.dumps(obj, ensure_ascii=False, indent=2) + "\n", encoding="utf-8")
+            print(f"OK  -> {out_json.relative_to(data_dir)}")
+
+        except Exception as e:
+            print(f"FAIL: {video_path.name}: {e}", file=sys.stderr)
+            # keep raw if we got it
+            if out_raw.exists():
+                print(f"      Raw output saved: {out_raw.name}", file=sys.stderr)
+
+        if args.sleep > 0:
+            time.sleep(args.sleep)
+
+
+if __name__ == "__main__":
+    main()
--- a/package.json
+++ b/package.json
@@ -0,0 +1,16 @@
+{
+  "name": "ig-japanese-quizzer",
+  "version": "1.0.0",
+  "private": true,
+  "workspaces": [
+    "server",
+    "client"
+  ],
+  "scripts": {
+    "dev": "concurrently \"npm run dev --workspace server\" \"npm run dev --workspace client\"",
+    "build": "npm run build --workspace server && npm run build --workspace client"
+  },
+  "devDependencies": {
+    "concurrently": "^8.2.2"
+  }
+}
--- a/prompt.txt
+++ b/prompt.txt
@@ -0,0 +1,116 @@
+You analyze an Instagram-style Japanese language video.
+The video is either Japanese-only or English+Japanese.
+
+Goal: Create a compact learning JSON for a custom quiz website.
+The website will ask the user questions; if the user is wrong or taps "Don't know",
+we will show the explanation from this JSON and the original IG media.
+
+TOKEN BUDGET:
+Be concise. Do not duplicate explanations inside questions.
+
+STRICT RULES:
+1) Do not invent. Only include words/phrases/grammar that clearly appear in the video.
+2) For every Japanese string containing kanji, provide a full hiragana reading in a separate field "kana".
+3) Keep it small:
+   - grammar: max 2
+   - vocab: max 10
+   - conversation lines: max 10
+   - key_phrases: max 10
+4) NO timestamps. NO evidence_quote. NO source fields. NO confidence fields.
+5) Questions MUST reference items by id (do not repeat long explanations in questions).
+6) Provide 1–3 questions per item (depending on usefulness). Prefer: cloze, multiple choice, match, register-choice.
+
+OUTPUT:
+Return ONLY valid JSON (no markdown). UTF-8 Japanese.
+
+SCHEMA:
+
+{
+  "meta": {
+    "mode": "ja_only|en+ja",
+    "type": "grammar|vocab|conversation|mixed|unknown",
+    "title_en": "short title (5-8 words max)"
+  },
+  "items": {
+    "grammar": [
+      {
+        "id": "g1",
+        "pattern": "string",
+        "meaning_en": "one line",
+        "use_note_en": "1-2 lines max",
+        "register": "polite|neutral|casual|slang|formal|unknown",
+        "example": {
+          "jp": "string",
+          "kana": "string (hiragana reading; required if jp has kanji)",
+          "en": "string"
+        }
+      }
+    ],
+    "vocab": [
+      {
+        "id": "v1",
+        "jp": "surface form",
+        "kana": "hiragana reading (required if jp has kanji; for kana-only words keep as-is)",
+        "meaning_en": "short",
+        "register": "polite|neutral|casual|slang|formal|unknown",
+        "note_en": "optional, 1 line max",
+        "example": {
+          "jp": "optional",
+          "kana": "optional",
+          "en": "optional"
+        }
+      }
+    ],
+    "conversation": [
+      {
+        "id": "c1",
+        "jp": "exact line",
+        "kana": "hiragana reading (required if jp has kanji)",
+        "en": "translation",
+        "register": "polite|neutral|casual|slang|mixed|unknown"
+      }
+    ],
+    "key_phrases": [
+      {
+        "id": "k1",
+        "jp": "phrase",
+        "kana": "reading (hiragana if needed)",
+        "meaning_en": "short",
+        "when_to_use_en": "1-2 lines max",
+        "register": "polite|neutral|casual|slang|formal|unknown"
+      }
+    ]
+  },
+  "quiz": [
+    {
+      "id": "q1",
+      "targets": ["k1"], 
+      "type": "mc_meaning|mc_register|cloze|match|choose_best_reply",
+      "prompt_en": "string",
+      "payload": {
+        "sentence_jp": "optional",
+        "sentence_kana": "optional",
+        "blanked": "optional (use ____ for blank)",
+        "options": ["A", "B", "C", "D"],
+        "pairs": [{"left":"", "right":""}]
+      },
+      "answer": {
+        "correct_index": 0,
+        "correct_text": "optional (for non-mc types)"
+      }
+    }
+  ],
+  "ui_hints": {
+    "recommended_order": ["g1","k1","k2","v1"],
+    "show_first": "quiz",
+    "explain_on_fail": true
+  }
+}
+
+QUESTION GUIDELINES:
+- For each grammar item: make at least 1 cloze question from the example, and 1 meaning or usage question.
+- For vocab/key_phrases: make at least 1 meaning multiple-choice and optionally 1 register or “best situation” question.
+- For conversation lines: optionally make “choose the best reply” or “what does this line mean” questions.
+- Keep prompts short. Do not restate long explanations. The website will show explanations after.
+
+Now analyze the video and output ONLY the JSON.
--- a/server/package.json
+++ b/server/package.json
@@ -0,0 +1,23 @@
+{
+  "name": "ig-japanese-quizzer-server",
+  "version": "1.0.0",
+  "private": true,
+  "main": "dist/index.js",
+  "types": "dist/index.d.ts",
+  "scripts": {
+    "dev": "ts-node-dev --respawn --transpile-only src/index.ts",
+    "build": "tsc --project tsconfig.json",
+    "start": "node dist/index.js"
+  },
+  "dependencies": {
+    "express": "^4.19.2",
+    "glob": "^10.3.12",
+    "zod": "^3.23.8"
+  },
+  "devDependencies": {
+    "@types/express": "^4.17.21",
+    "@types/node": "^22.4.1",
+    "ts-node-dev": "^2.0.0",
+    "typescript": "^5.5.4"
+  }
+}
--- a/server/src/index.ts
+++ b/server/src/index.ts
@@ -0,0 +1,272 @@
+import express from 'express';
+import path from 'path';
+import fs from 'fs/promises';
+import { glob } from 'glob';
+import { z } from 'zod';
+
+const DEFAULT_DATA_ROOT = path.resolve(__dirname, '..', '..', 'data');
+const DATA_ROOT = process.env.DATA_ROOT ? path.resolve(process.env.DATA_ROOT) : DEFAULT_DATA_ROOT;
+
+const metaSchema = z
+  .object({
+    mode: z.string().optional(),
+    type: z.string().optional(),
+    title_en: z.string().optional(),
+  })
+  .partial()
+  .default({});
+
+const itemsSchema = z
+  .object({
+    grammar: z.array(z.record(z.any())).default([]),
+    vocab: z.array(z.record(z.any())).default([]),
+    conversation: z.array(z.record(z.any())).default([]),
+    key_phrases: z.array(z.record(z.any())).default([]),
+  })
+  .partial()
+  .default({
+    grammar: [],
+    vocab: [],
+    conversation: [],
+    key_phrases: [],
+  });
+
+const quizSchema = z
+  .array(
+    z
+      .object({
+        id: z.union([z.string(), z.number()]).optional(),
+        targets: z.array(z.union([z.string(), z.number()])).default([]),
+        type: z.string().default(''),
+        prompt_en: z.string().optional(),
+        payload: z.record(z.any()).default({}),
+        answer: z.record(z.any()).default({}),
+      })
+      .partial()
+  )
+  .default([]);
+
+const uiHintsSchema = z
+  .object({
+    recommended_order: z.array(z.union([z.string(), z.number()])).default([]),
+    show_first: z.string().optional(),
+    explain_on_fail: z.boolean().optional(),
+  })
+  .partial()
+  .default({ recommended_order: [] });
+
+const entrySchema = z
+  .object({
+    meta: metaSchema,
+    items: itemsSchema,
+    quiz: quizSchema,
+    ui_hints: uiHintsSchema,
+  })
+  .partial()
+  .passthrough()
+  .default({
+    meta: {},
+    items: { grammar: [], vocab: [], conversation: [], key_phrases: [] },
+    quiz: [],
+    ui_hints: { recommended_order: [] },
+  });
+
+type EntryData = z.infer<typeof entrySchema>;
+
+interface EntryRecord {
+  id: string;
+  title: string;
+  meta: EntryData['meta'];
+  items: EntryData['items'];
+  quiz: EntryData['quiz'];
+  ui_hints: EntryData['ui_hints'];
+  videoPath: string;
+  jsonPath: string;
+  video_url: string;
+  counts: {
+    grammar: number;
+    vocab: number;
+    key_phrases: number;
+    conversation: number;
+    quiz: number;
+  };
+}
+
+const entryIndex = new Map<string, EntryRecord>();
+
+function ensureWithinDataRoot(targetPath: string) {
+  const resolved = path.resolve(targetPath);
+  return resolved === DATA_ROOT || resolved.startsWith(DATA_ROOT + path.sep);
+}
+
+async function fileExists(targetPath: string) {
+  try {
+    await fs.access(targetPath);
+    return true;
+  } catch {
+    return false;
+  }
+}
+
+function toPosixId(relativePath: string) {
+  return relativePath.split(path.sep).join('/');
+}
+
+function buildVideoUrl(id: string) {
+  const encoded = id
+    .split('/')
+    .filter(Boolean)
+    .map((segment) => encodeURIComponent(segment))
+    .join('/');
+  return `/data/${encoded}.mp4`;
+}
+
+function computeCounts(items: EntryData['items'], quiz: EntryData['quiz']) {
+  return {
+    grammar: items?.grammar?.length || 0,
+    vocab: items?.vocab?.length || 0,
+    key_phrases: items?.key_phrases?.length || 0,
+    conversation: items?.conversation?.length || 0,
+    quiz: quiz?.length || 0,
+  };
+}
+
+async function loadEntries() {
+  entryIndex.clear();
+
+  const dataExists = await fileExists(DATA_ROOT);
+  if (!dataExists) {
+    console.warn(`Data root not found at ${DATA_ROOT}`);
+    return;
+  }
+
+  const mp4Paths = await glob('**/*.mp4', { cwd: DATA_ROOT, absolute: true });
+  for (const mp4Path of mp4Paths) {
+    const resolvedMp4 = path.resolve(mp4Path);
+    if (!ensureWithinDataRoot(resolvedMp4)) {
+      continue;
+    }
+
+    const dir = path.dirname(resolvedMp4);
+    const baseName = path.basename(resolvedMp4, '.mp4');
+    const jsonPath = path.join(dir, `${baseName}.json`);
+
+    if (!(await fileExists(jsonPath))) {
+      continue;
+    }
+
+    const resolvedJson = path.resolve(jsonPath);
+    if (!ensureWithinDataRoot(resolvedJson)) {
+      continue;
+    }
+
+    let parsed: EntryData | null = null;
+    try {
+      const raw = await fs.readFile(resolvedJson, 'utf-8');
+      const json = JSON.parse(raw);
+      const safe = entrySchema.safeParse(json);
+      parsed = safe.success ? safe.data : entrySchema.parse({});
+      if (!safe.success) {
+        console.warn(`Entry at ${resolvedJson} parsed with defaults due to validation issues.`);
+      }
+    } catch (err) {
+      console.warn(`Failed to parse ${resolvedJson}:`, err);
+      parsed = entrySchema.parse({});
+    }
+
+    const relative = path.relative(DATA_ROOT, resolvedMp4);
+    const id = toPosixId(relative.replace(/\.mp4$/i, ''));
+    const title = parsed.meta?.title_en?.trim() || baseName;
+    const video_url = buildVideoUrl(id);
+    const counts = computeCounts(parsed.items || { grammar: [], vocab: [], conversation: [], key_phrases: [] }, parsed.quiz || []);
+
+    entryIndex.set(id, {
+      id,
+      title,
+      meta: parsed.meta || {},
+      items: parsed.items || { grammar: [], vocab: [], conversation: [], key_phrases: [] },
+      quiz: parsed.quiz || [],
+      ui_hints: parsed.ui_hints || { recommended_order: [] },
+      videoPath: resolvedMp4,
+      jsonPath: resolvedJson,
+      video_url,
+      counts,
+    });
+  }
+
+  console.log(`Loaded ${entryIndex.size} entries from data directory.`);
+}
+
+function sanitizeEntryResponse(entry: EntryRecord) {
+  return {
+    id: entry.id,
+    title: entry.title,
+    meta: entry.meta || {},
+    items: entry.items || { grammar: [], vocab: [], conversation: [], key_phrases: [] },
+    quiz: entry.quiz || [],
+    ui_hints: entry.ui_hints || { recommended_order: [] },
+    video_url: entry.video_url,
+    counts: entry.counts,
+  };
+}
+
+async function main() {
+  await loadEntries();
+
+  const app = express();
+  const port = process.env.PORT || 5174;
+
+  app.disable('x-powered-by');
+
+  app.use('/data', express.static(DATA_ROOT));
+
+  app.get('/', (_req, res) => {
+    res.type('text/plain').send('IG Japanese Quizzer backend is running. See /api/entries.');
+  });
+
+  app.get('/api/entries', (_req, res) => {
+    const entries = Array.from(entryIndex.values())
+      .map((entry) => ({
+        id: entry.id,
+        title: entry.title,
+        mode: entry.meta?.mode,
+        type: entry.meta?.type,
+        counts: entry.counts,
+        video_url: entry.video_url,
+      }))
+      .sort((a, b) => a.title.localeCompare(b.title, undefined, { sensitivity: 'base' }));
+
+    res.json(entries);
+  });
+
+  app.get('/api/entry', (req, res) => {
+    const idParam = req.query.id;
+    if (!idParam || typeof idParam !== 'string') {
+      res.status(400).json({ error: 'Missing id query param' });
+      return;
+    }
+
+    const entry = entryIndex.get(idParam);
+    if (!entry) {
+      res.status(404).json({ error: 'Entry not found' });
+      return;
+    }
+
+    res.json(sanitizeEntryResponse(entry));
+  });
+
+  app.get('/api/health', (_req, res) => {
+    res.json({ ok: true, entries: entryIndex.size });
+  });
+
+  app.listen(port, () => {
+    console.log(`Server listening on http://localhost:${port}`);
+    console.log(`Data root: ${DATA_ROOT}`);
+    console.log(`Entries loaded: ${entryIndex.size}`);
+  });
+}
+
+main().catch((err) => {
+  console.error('Failed to start server', err);
+  process.exit(1);
+});
--- a/server/tsconfig.json
+++ b/server/tsconfig.json
@@ -0,0 +1,17 @@
+{
+  "compilerOptions": {
+    "target": "ES2020",
+    "module": "commonjs",
+    "moduleResolution": "node",
+    "rootDir": "src",
+    "outDir": "dist",
+    "esModuleInterop": true,
+    "declaration": true,
+    "forceConsistentCasingInFileNames": true,
+    "skipLibCheck": true,
+    "strict": false,
+    "resolveJsonModule": true,
+    "types": ["node"]
+  },
+  "include": ["src/**/*"]
+}
				`@@ -0,0 +1 @@`
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