chore: Add README, .nvmrc, and package.json scripts for local dev setup

.nvmrc

@@ -0,0 +1 @@
+18

README.md

@@ -0,0 +1,109 @@
+# Hellotext Help Center
+
+The public [Hellotext](https://www.hellotext.com) help center, served at **[help.hellotext.com](https://help.hellotext.com)**.
+
+It is a [Jekyll](https://jekyllrb.com) site with **bilingual content (English and Spanish)** powered by [`jekyll-multiple-languages-plugin`](https://github.com/kurtsson/jekyll-multiple-languages-plugin), styled with [Tailwind CSS](https://tailwindcss.com) (compiled through [`jekyll-postcss`](https://github.com/mhanberg/jekyll-postcss)), and deployed on Netlify.
+
+## Prerequisites
+
+The versions below are the ones used by the production build (see `netlify.toml` and `.ruby-version`). Match them to avoid surprises.
+
+| Tool    | Version   | Where it's pinned                 |
+| ------- | --------- | --------------------------------- |
+| Ruby    | `3.3.6`   | `.ruby-version`                   |
+| Bundler | `2.4.22`  | `netlify.toml`                    |
+| Node.js | `18`      | `.nvmrc` / `netlify.toml`         |
+| Yarn    | `1.22.22` | `package.json` (`packageManager`) |
+
+Use a version manager such as [rbenv](https://github.com/rbenv/rbenv) / [asdf](https://asdf-vm.com) for Ruby and [nvm](https://github.com/nvm-sh/nvm) for Node. Enable Yarn via Corepack: `corepack enable`.
+
+> If the exact Ruby patch `3.3.6` isn't installed, the nearest `3.3.x` patch (e.g. `3.3.11`) builds fine with the pinned Jekyll `~> 4.4`.
+
+## Install
+
+```bash
+bundle install   # Ruby gems (Jekyll + plugins)
+yarn install     # Node packages (Tailwind / PostCSS toolchain)
+```
+
+Or, with the bundled script: `yarn setup`.
+
+## Local development (serve)
+
+```bash
+bin/jekyll               # serves on http://localhost:4000 with livereload
+# equivalently:
+bundle exec jekyll serve
+# or:
+yarn serve
+```
+
+`bin/jekyll` accepts an optional port argument, e.g. `bin/jekyll 4001`.
+
+## Build (production / verification)
+
+```bash
+JEKYLL_ENV=production bundle exec jekyll build   # outputs to _site/
+# equivalently:
+yarn build
+```
+
+This is the **exact command Netlify runs** to publish the site.
+
+> **Gotcha:** a plain `bundle exec jekyll build` (without `JEKYLL_ENV=production`) fails with `Could not connect to the PostCSS server`. The `jekyll-postcss` plugin expects its dev server during `serve`; for a one-off build you must use the production environment shown above. Always use `yarn build` / the production command for a standalone build or CI check.
+
+## Project structure
+
+```
+_config.yml              Site config: collections, languages, plugins
+netlify.toml             Deploy config (build command + Ruby/Bundler/Node versions)
+
+_<collection>/           Guide stubs per topic, e.g.:
+  _integrations/         (Shopify, Wix, Woo, WhatsApp, VTEX, …)
+  _journeys/  _captures/  _campaigns/  _numbers/  _audience/  _billing/  …
+_i18n/
+  en.yml  es.yml         UI string translations
+  en/<collection>/...    English guide bodies
+  es/<collection>/...     Spanish guide bodies
+_topics/                 Topic landing pages that list each collection's guides
+_layouts/  _includes/    Page templates
+images/  css/  fonts/    Static assets
+```
+
+Each guide is a thin **stub** in a collection directory (front matter only, plus a
+`{% translate_file %}` include) whose body lives in **both** `_i18n/en/...` and
+`_i18n/es/...`.
+
+## Adding a guide
+
+1. Create the stub, e.g. `_integrations/connect-example.md`:
+
+   ```yaml
+   ---
+   languages: ["en", "es"]
+
+   en:
+     title: Connect Example
+     description: One-line summary shown in the topic list.
+   es:
+     title: Conecta Example
+     description: Resumen de una línea para la lista de temas.
+
+   permalink: connect-example
+   permalink_es: conecta-example
+
+   layout: guide
+   topic: integrations
+   popular: false
+   ---
+   { % translate_file integrations/connect-example.md % }
+   ```
+
+2. Add the translated bodies at `_i18n/en/integrations/connect-example.md` and `_i18n/es/integrations/connect-example.md`.
+3. Run `yarn build` and confirm the guide renders at its permalink and appears in the correct topic page (e.g. `/integrations` and `/es/integraciones`).
+
+The `connect-shopify` integration is a complete, recent example to copy from.
+
+## Deployment
+
+Netlify builds with `JEKYLL_ENV=production bundle exec jekyll build` and publishes the `_site/` directory (see `netlify.toml`). Merges to the production branch deploy automatically.

package.json

@@ -1,4 +1,9 @@
 {
+  "scripts": {
+    "setup": "bundle install && yarn install",
+    "serve": "bundle exec jekyll serve",
+    "build": "JEKYLL_ENV=production bundle exec jekyll build"
+  },
   "devDependencies": {
     "@tailwindcss/typography": "^0.5.7",
     "autoprefixer": "^10.4.11",