initial: zero-trust markdown tutorials site

Single-binary Go service that renders markdown pages from a runtime
volume mount. Targeted at public, no-auth, no-WAF deployment behind a
TLS ingress; security posture is defense-in-depth at every layer:

- goldmark with no WithUnsafe — raw HTML in author markdown is stripped
- CSP without 'unsafe-inline', plus HSTS, COOP, CORP, Permissions-Policy
- static handler rejects non-GET/HEAD, directory listings, dotfiles, traversal
- content loader rejects symlinks that escape the content root, dotfiles,
  and .md files larger than 1 MiB
- per-page template trees (cloned from layout) so define-blocks don't
  collide between home/category/page
- SIGHUP triggers atomic library swap — live edits on volume, no rebuild

Locale layout content/<locale>/<category>/<slug>.md. Categories without
_index.md still appear on the home page with a humanized name. Search is
a ~70-line vanilla JS scan over /search.json?lang=<locale>; swap for a
real indexer if the corpus ever balloons.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

content/en/install-client/_index.md

@@ -0,0 +1,14 @@
+---
+title: Install Minecraft client
+summary: Get a working Minecraft client to connect to our servers.
+order: 1
+---
+
+# Install Minecraft client
+
+Pick the edition that matches what you bought (or want to play offline):
+
+- **Java Edition** — official launcher from Mojang. Required for our Fabric/Paper servers.
+- **Bedrock Edition** — Windows/console/mobile. Currently **not supported** by our servers.
+
+If you don't own Minecraft, see the **offline (cracked) client** guide — you can still play on servers that allow offline mode after registering through Discord.

content/en/install-client/java-edition.md

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+---
+title: Java Edition (official launcher)
+summary: Install the Mojang launcher and verify your account works.
+order: 1
+---
+
+# Java Edition (official launcher)
+
+The Mojang/Microsoft launcher is the only officially supported way to play Java Edition.
+
+## Download
+
+1. Go to [minecraft.net/download](https://www.minecraft.net/en-us/download).
+2. Download the launcher for your OS:
+   - **Windows:** `.msi` installer.
+   - **macOS:** `.dmg` disk image.
+   - **Linux:** `.deb`, `.tar.gz`, or via your distro's package manager (e.g. `sudo pacman -S minecraft-launcher` on Arch).
+3. Run the installer and launch it.
+
+## Sign in
+
+You need a **Microsoft account** with a Minecraft license attached. If you bought Minecraft before 2020 and still use a Mojang account, the launcher will prompt you to migrate — follow the steps. Migration is free.
+
+If you see "Failed to authenticate":
+
+- Check that your Microsoft account hasn't been switched to a child account or moved to a family group without Minecraft access.
+- Try [account.live.com/Authorize](https://account.live.com/Authorize) to clear stale tokens.
+
+## Pick a version
+
+Our servers run **Minecraft 1.21.4**. In the launcher:
+
+1. Click **Installations** (top of the launcher).
+2. Click **New installation**.
+3. Set **Version** to `release 1.21.4`.
+4. Save — the launcher downloads it on first play.
+
+## Connect to a server
+
+1. From the launcher, click **Play** on your `1.21.4` installation.
+2. In Minecraft: **Multiplayer** → **Add Server**.
+3. Server name: anything (e.g. "Survival").
+4. Server address: the address you got from the admin (e.g. `survival.g.timemachine.center`).
+5. **Done** → select the server → **Join Server**.
+
+## What's next
+
+- If you have a paid (Java) account: nothing — the server recognizes you automatically and you'll spawn into the world.
+- If you don't have a paid account: see the [offline client](./offline-client) guide.
+- Either way, register your username on Discord first — the server will ask you to before it lets you in.

content/en/install-client/offline-client.md

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+---
+title: Offline (cracked) client
+summary: Play without buying Minecraft, using a free open-source launcher.
+order: 2
+---
+
+# Offline (cracked) client
+
+If you don't own Minecraft, you can still play on our servers that allow offline mode. We recommend **Prism Launcher** — it's open-source, free, and well-maintained.
+
+> **Note:** offline accounts can't connect to Mojang's official servers (Hypixel, etc.). They work only on servers that explicitly allow them. Our platform supports both — when you register on Discord, you choose "Offline" account type.
+
+## Download Prism Launcher
+
+1. Go to [prismlauncher.org](https://prismlauncher.org/).
+2. Download for your OS — Windows, macOS, Linux.
+3. Install + open.
+
+## First-time setup
+
+On first launch, Prism asks for an account. Click **Skip** for now — we'll add an offline profile after.
+
+1. Top right: **Accounts** → **Add Offline**.
+2. Username: must match what you'll register on our Discord (3–16 characters, letters/numbers/underscore).
+3. Save.
+
+## Add a Minecraft installation
+
+1. Main view: click **Add Instance**.
+2. Pick **Vanilla** (or **Fabric** if the admin tells you to).
+3. Version: **1.21.4**.
+4. Name it something memorable (e.g. "automc Survival").
+5. Click **OK**.
+
+## Launch + connect
+
+1. Double-click your instance.
+2. Prism downloads the assets first time (~100 MB).
+3. In Minecraft: **Multiplayer** → **Add Server** → enter the address the admin gave you.
+4. Connect.
+
+## Register on Discord first
+
+Before connecting, you must register your username on our Discord:
+
+1. Join the Discord server (link from the admin).
+2. Run `/register`.
+3. The bot DMs you — pick **Offline** account type.
+4. Type the same username you set in Prism.
+5. The bot saves a password — also DMs it. Keep it.
+
+When you join the MC server, it'll ask for the password in chat: type `/login <password>`.