feat: add global-onboard demo app (closes #1761) (#1890)

* Add GlobalOnboard demo app to /community

* chore: add changeset for community submission

* fix(global-onboard): harden export and task edits

* fix(global-onboard): prevent stale translations and update docs

* Update community/global-onboard/app/page.tsx

this are just some CSS changes i dont know what it has to do with PR quality

Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>

* fix(global-onboard): tighten api guards and cleanup

* fix(global-onboard): harden translation errors

* fix(global-onboard): harden api and align tailwind v4

* fix(global-onboard): improve tooling and translations

* fix(global-onboard): defer download url cleanup

* chore(global-onboard): remove theme switching

* chore: replace changeset with empty

---------

Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>
Co-authored-by: Sumit Saurabh <62152915+sumitsaurabh927@users.noreply.github.com>

Author: 3 people

.changeset/thin-dryers-boil.md

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+---
+---

community/global-onboard/README.md

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+# GlobalOnboard · LingoHack25 ✨
+
+
+ **One onboarding checklist. Any language. Fully Configurable**  
+ HR writes once in English, and GlobalOnboard turns it into a polished, localized employee experience by combining **Lingo CLI**, **Lingo JavaScript SDK**, and **Lingo CI**.
+
+
+## 🧠 The MAIN Pillars of GlobalOnboard
+
+- **Real personas:** HR Workspace (authoring) + Employee Experience (preview) wired together in real time.
+- **Full Lingo toolchain:** Static JSON via CLI, runtime personalization via SDK, and CI automation so translations stay fresh.
+- **Enterprise-ready touches:** Translation QA mode, localization health warnings, onboarding pack export, and translation spinners that prove we’re production aware.
+
+### 🏅 Lingo Product Scorecard
+
+| Lingo product | How GlobalOnboard uses it | Why it matters |
+ | --- | --- | --- |
+ | **Lingo CLI** | Generates `data/ui.{locale}.json` and `data/onboarding_template.{locale}.json` from English sources via `npx lingo.dev@latest run`. | Demonstrates the official static localization workflow. |
+ | **Lingo JavaScript SDK** | Translates the welcome note and every custom task at runtime with caching, spinners, and graceful fallbacks. | Shows dynamic personalization for each employee preview. |
+ | **Lingo CI** | `.github/workflows/i18n.yml` runs `npx lingo.dev@latest ci --pull-request` whenever English JSON or `i18n.json` changes. | Proves translation automation and GitHub integration end-to-end. |
+
+---
+
+## 🔑 Feature Highlights
+
+| Area | What it unlocks | Lingo capability |
+| --- | --- | --- |
+| HR Workspace | Edit company, role, welcome note, and a fully dynamic checklist (add/delete/modify tasks). | Authoring surface for English source |
+| Employee Experience | Switch between `en`, `es`, `fr`, `hi` previews with live updates + translation loading overlay. | CLI JSON + SDK runtime translations |
+| Preview Modes | `Employee view` or `Translation QA` (side-by-side EN vs target locale) with Machine → Edited → Approved overrides. | Human-in-the-loop QA |
+| Localization Health | Warns when translated copy is >1.5× English length, per task + summary. | QA signal |
+| Onboarding Pack Export | One click generates a `.doc` bundle for the current locale (company, role, tasks, welcome note). | HR enablement |
+| Lingo CI Workflow | GitHub Action auto-runs `lingo.dev ci` whenever English JSON changes. | Translation automation |
+
+---
+
+## 🧩 Architecture At-a-Glance
+
+```text
+HR inputs ──▶ English JSON templates ──▶ Lingo CLI generates data/ui.{locale}.json
+              │                               │
+              │                               └─▶ Lingo CI keeps translations up to date
+              │
+              ├─▶ React state + localStorage overrides
+              │
+              └─▶ Lingo JS SDK
+                     ├─ Welcome note runtime translation
+                     └─ Custom task translations (per locale) + caching
+```
+
+---
+
+## 🧪 Getting Started (Local Dev)
+
+```bash
+git clone https://github.com/lingodotdev/lingo.dev.git
+cd lingo.dev/community/global-onboard
+npm install
+
+# Provide your API key so CLI + SDK can translate
+export LINGO_DOT_DEV_API_KEY="your-key"
+# Optional alias used by some shells/CLIs
+export LINGODOTDEV_API_KEY="$LINGO_DOT_DEV_API_KEY"
+
+npm run dev
+```
+
+Visit **<http://localhost:3000>** — left panel is HR Workspace, right panel is the localized Employee preview.
+
+---
+
+## 🌐 Localization Workflow Cheat Sheet
+
+### 1. Static JSON (Lingo CLI)
+- Source files: `data/ui.en.json`, `data/onboarding_template.en.json`
+- Configure targets in `i18n.json`
+- Generate translations:
+  ```bash
+  export LINGO_DOT_DEV_API_KEY="your-key"
+  npx lingo.dev@latest run
+  ```
+- CI automation: `.github/workflows/i18n.yml` runs `npx lingo.dev@latest ci --pull-request` on every push to `main` touching English JSON or `i18n.json`.
+
+### 2. Runtime Personalization (Lingo JS SDK)
+- Welcome note + any **custom tasks** run through `lib/lingo-client.ts`.
+- We cache translations per locale, show a loading spinner overlay, and gracefully fall back to English if the SDK errors.
+
+### 3. Translation QA Mode
+- Side-by-side English vs target locale.
+- Inline editing with Machine → Edited → Approved chips.
+- Reset/Unlock controls to manage overrides.
+- Length-based warnings + summary so HR spots risky strings fast.
+- Overrides feed every other view (single preview + export).
+
+---
+
+## 📦 Onboarding Pack Export
+
+1. Choose a locale via the Employee panel dropdown.
+2. Ensure QA overrides are final (Approved if needed).
+3. Click **Download Onboarding Pack** → generates `onboarding-pack-<locale>.doc` with:
+   - Locale code
+   - Localized company + role
+   - Welcome note (SDK translation if non-English)
+   - Full task list using effective text (overrides or machine)
+
+Perfect for HRIS uploads, emails, or sharing with managers.
+
+---
+
+## 🛠 Tech Stack
+
+- **Next.js 16** (App Router, TypeScript)
+- **Tailwind CSS 4** (custom gradient + glassmorphism theme)
+- **Lingo.dev CLI, JS SDK, CI**
+- **next-themes** + custom design tokens for dark-first UI
+- **GitHub Actions** for automated localization runs
+
+---
+
+## 📁 Project Structure
+
+```text
+app/
+  layout.tsx        # Root metadata + ThemeProvider
+  page.tsx          # HR + Employee panels, QA, overrides, spinner
+  globals.css       # Tailwind layers + design tokens
+components/
+  mode-toggle.tsx   # Shadcn-style theme toggle (hidden by default)
+data/
+  ui.*.json         # Static UI translations (CLI managed)
+  onboarding_template.*.json
+lib/
+  i18n.ts           # Typed loaders for JSON bundles
+  lingo-client.ts   # SDK setup + runtime translation helpers
+.github/workflows/
+  i18n.yml          # CI job running `lingo.dev ci`
+i18n.json           # Bucket + locale configuration
+```
+
+---
+
+## 🧾 Useful Scripts
+
+- `npm run dev` – Next.js dev server
+- `npm run build` – Production build
+- `npm run lint` – ESLint via `eslint-config-next`
+
+---
+
+## ✅ Hackathon Compliance & Notes
+
+- All code, UI, and assets created fresh during **LingoHack25**.
+- API keys are required only for translation features; none are checked into the repo.
+- Want more locales? Add them to `SUPPORTED_LOCALES` + `i18n.json`, re-run the CLI, and you’re done.
+
+---
+
+### 💬 Questions for Judges?
+Open an issue or ping me — I'd love to show how GlobalOnboard can become the multilingual onboarding cockpit for any global company.

community/global-onboard/app/api/translate/route.ts

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+import { NextResponse } from "next/server";
+
+import { translateWithLingo } from "@/lib/lingo";
+import { SUPPORTED_LOCALES, type Locale } from "@/lib/i18n";
+
+type TranslationPayload = {
+  text?: string;
+  targetLocale?: Locale;
+};
+
+const MAX_TEXT_LENGTH = 2000;
+
+export async function POST(request: Request) {
+  let payload: TranslationPayload;
+
+  try {
+    payload = (await request.json()) as TranslationPayload;
+  } catch (error) {
+    console.error("Invalid translation payload", error);
+    return NextResponse.json({ error: "Invalid request body" }, { status: 400 });
+  }
+
+  const { text, targetLocale } = payload;
+
+  if (!text || typeof text !== "string") {
+    return NextResponse.json({ error: "Missing welcome note" }, { status: 400 });
+  }
+
+  if (text.length > MAX_TEXT_LENGTH) {
+    return NextResponse.json({ error: "Welcome note is too long" }, { status: 413 });
+  }
+
+  if (!targetLocale || !SUPPORTED_LOCALES.includes(targetLocale)) {
+    return NextResponse.json({ error: "Unsupported locale" }, { status: 400 });
+  }
+
+  try {
+    const translated = await translateWithLingo(text, targetLocale);
+    return NextResponse.json({ translated });
+  } catch (error) {
+    console.error("Lingo translation failed", error);
+    return NextResponse.json(
+      { error: "Unable to translate welcome note" },
+      { status: 500 },
+    );
+  }
+}

community/global-onboard/app/favicon.ico

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+@import "tailwindcss";
+
+@source "../app/**/*.{js,ts,jsx,tsx}";
+@source "../components/**/*.{js,ts,jsx,tsx}";
+@source "../lib/**/*.{js,ts,jsx,tsx}";
+
+:root {
+  --background: linear-gradient(135deg, #e3f2ff, #f9f1ff);
+  --foreground: #0f172a;
+  --muted: rgba(255, 255, 255, 0.8);
+  --muted-foreground: #475569;
+  --panel-start: #eef2ff;
+  --panel-end: #fdf2f8;
+}
+
+@theme inline {
+  --color-background: var(--background);
+  --color-foreground: var(--foreground);
+  --color-muted: var(--muted);
+  --color-muted-foreground: var(--muted-foreground);
+  --font-sans: "Inter", "Sohne", system-ui, -apple-system, blinkmacsystemfont,
+    "Segoe UI", sans-serif;
+  --font-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
+}
+
+body {
+  background: var(--background);
+  color: var(--foreground);
+  font-family: var(--font-sans);
+  transition: color 0.3s ease;
+  background-attachment: fixed;
+}

community/global-onboard/app/globals.css

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+import type { Metadata } from "next";
+import "./globals.css";
+import { cn } from "@/lib/utils";
+
+export const metadata: Metadata = {
+  title: "GlobalOnboard",
+  description:
+    "GlobalOnboard lets HR teams create one onboarding checklist and preview it in multiple languages via Lingo.dev.",
+  icons: {
+    icon: [
+      { url: "/favicon.svg", type: "image/svg+xml" },
+      { url: "/favicon.svg", rel: "alternate icon", type: "image/svg+xml" },
+    ],
+  },
+};
+
+export default function RootLayout({
+  children,
+}: Readonly<{
+  children: React.ReactNode;
+}>) {
+  return (
+    <html lang="en" suppressHydrationWarning>
+      <body
+        className={cn(
+          "min-h-screen bg-background text-foreground antialiased transition-colors",
+        )}
+      >
+        {children}
+      </body>
+    </html>
+  );
+}