docs(local-dev): add 'Local development' section + PHP 8.5 support

Adds /whp/local-dev/ with three articles documenting the public cloud
container images on repo.anhonesthost.net/cloud-hosting-platform/:

- overview: dev/prod parity pitch, prerequisites, table of images,
  link to the Gitea org, and a note that this is for customers
  comfortable with Docker (the hosted side needs none of this).
- php-apache: cloud-apache-container (cac). PHP 7.4 through 8.5 side
  by side, default 8.3, AlmaLinux 9 + Apache mod_ssl. Documents
  image tags, local-dev.sh flags, manual docker command, bind-mount
  layout, WordPress install, helper scripts (instance_start /
  instance_stop / instance_logs / instance_db_info), and cleanup.
- node: cloud-node-container (cnoc). Node 18/20/22, default 20,
  AlmaLinux 9 + Nginx (SSL + HTTP→HTTPS redirect) + PM2 +
  Memcached. Same shape: tags, flags, manual docker, where code
  goes (user/app/), logs layout, helpers, cleanup.

Sidebar gains a 'Local development' group between Site Builder and
Reference. Section redirect /whp/local-dev/ -> overview added to
the section-landing redirect set.

src/content/docs/whp/local-dev/node.mdx

@@ -0,0 +1,169 @@
+---
+title: Node + Nginx locally
+description: Run the cloud-node-container image on your laptop for Express, custom Node apps, and PM2-managed processes.
+sidebar:
+  order: 3
+---
+
+import { Steps, Aside } from '@astrojs/starlight/components';
+import Support from '~/content/partials/support-link.mdx';
+
+[`cloud-node-container`](https://repo.anhonesthost.net/cloud-hosting-platform/cloud-node-container) (image: **`cnoc`**) is the same Node + Nginx image we use for hosted Node sites. It's based on **AlmaLinux 9**, ships with **Node 18, 20, and 22** side-by-side (default 20), uses **PM2** as the process manager, and fronts your app with **Nginx (SSL + HTTP→HTTPS redirect)**.
+
+## What's included
+
+- **Multiple Node versions** — 18, 20, 22, switchable via `NODEVER` env var or the `-a` flag.
+- **PM2** for production-grade process management — automatic restart, log rotation.
+- **Nginx reverse proxy** with SSL and HTTP→HTTPS redirect.
+- **Memcached** for sessions, automatic backups, log rotation.
+- **`/ping` health endpoint** baked into the proxy config.
+
+## Image tags
+
+Pull from `repo.anhonesthost.net/cloud-hosting-platform/cnoc:<tag>`. The most useful tags:
+
+- `cnoc:latest` — the default (Node 20).
+- Version-pinned tags follow the same pattern (`cnoc:node18`, `cnoc:node20`, `cnoc:node22`).
+
+Check the repo for the current tag list.
+
+## Quick start with `local-dev.sh`
+
+The repo ships a `local-dev.sh` script that handles the Docker run, creates the bind-mount layout, generates helper scripts, and scaffolds a sample Express app if none exists.
+
+<Steps>
+
+1. Clone the repo and `cd` in:
+
+   ```bash
+   git clone https://repo.anhonesthost.net/cloud-hosting-platform/cloud-node-container.git
+   cd cloud-node-container
+   ```
+
+2. Start a local instance:
+
+   ```bash
+   ./local-dev.sh -n local-dev
+   ```
+
+3. The script will:
+   - Create user + log directories (`nginx/`, `nodejs/`).
+   - Scaffold a default Express app under `user/app/` if you haven't dropped your own in yet.
+   - Start the container with the right env vars.
+   - Generate helper scripts (`instance_start`, `instance_stop`, `instance_logs`, `instance_shell`).
+
+4. Open `http://localhost/` in a browser — the sample Express app's response page should be there. Or hit `http://localhost/ping` to confirm the health endpoint.
+
+</Steps>
+
+## Flags
+
+| Flag | Purpose | Default |
+|---|---|---|
+| `-n` | Container name (required) | — |
+| `-p` | HTTP port | `80` |
+| `-s` | HTTPS port | `443` |
+| `-r` | Root path for files | current directory |
+| `-a` | Node version (`18`, `20`, `22`) | `20` |
+| `-v` | Verbose mode | off |
+| `-h` | Show help | — |
+
+Example — run a Node 22 instance on port 3000:
+
+```bash
+./local-dev.sh -n my-node22-app -a 22 -p 3000 -s 3443
+```
+
+## Manual Docker usage
+
+```bash
+mkdir -p local-development/domain.tld
+cd local-development/domain.tld
+mkdir user
+mkdir -p user/{app,logs/{nginx,nodejs}}
+
+docker run -d \
+  -p 80:80 -p 443:443 \
+  -e NODEVER=20 -e environment=DEV \
+  --mount type=bind,source="$(pwd)"/user,target=/home/$(whoami) \
+  -e uid=$(id -u) -e user=$(whoami) -e domain=localhost \
+  --name local-dev \
+  repo.anhonesthost.net/cloud-hosting-platform/cnoc:latest
+```
+
+## Get a shell inside the container
+
+```bash
+docker exec -it local-dev /bin/bash
+```
+
+Useful for running `pm2 ls`, `pm2 logs`, or `npm` commands against your bind-mounted app folder.
+
+## Where your code goes
+
+Your Node application lives at `user/app/` on your laptop. Inside the container that's `/home/<user>/app/`. The container is configured to run your app from there via PM2.
+
+Minimum required files in `user/app/`:
+
+- **`package.json`** — describes your app and dependencies; **must define a start command** (`"start": "node server.js"` in `scripts`).
+- **A main JavaScript file** — typically `server.js` or `index.js`.
+
+After dropping files in, restart the container so PM2 picks up the new app:
+
+```bash
+docker restart local-dev
+```
+
+Your app should bind to the **port shown by the container's env var** (usually `process.env.PORT`). Nginx forwards traffic to that port internally and proxies SSL.
+
+## Logs
+
+| Where | What |
+|---|---|
+| `user/logs/nginx/` | Nginx access + error logs |
+| `user/logs/nodejs/` | PM2's stdout/stderr capture from your Node app |
+
+Tail them from your laptop:
+
+```bash
+tail -F user/logs/nodejs/*.log
+```
+
+Or via the helper script:
+
+```bash
+./instance_logs
+```
+
+## Stop / start / clean up
+
+```bash
+./instance_stop      # stop the container
+./instance_start     # start it again
+./instance_logs      # view container logs
+./instance_shell     # exec into the container
+```
+
+To wipe everything:
+
+```bash
+docker rm -f local-dev
+rm -rf local-development/
+```
+
+<Aside type="tip">
+  The `/ping` endpoint is wired by Nginx independently of your app — useful for `docker healthcheck` config when you start adapting the manual command to your own setup.
+</Aside>
+
+## Source
+
+[`cloud-node-container` on Gitea](https://repo.anhonesthost.net/cloud-hosting-platform/cloud-node-container) — Dockerfile, Nginx + PM2 configs, entrypoint, and the `local-dev.sh` script.
+
+## Related
+
+- [PHP + Apache locally](/whp/local-dev/php-apache/)
+- [Create a site](/whp/how-to/create-a-site/) — the hosted side.
+
+## Still stuck?
+
+<Support />