feat: add documentation website (Docusaurus)

- 25 documentation pages covering Getting Started, User Guide, Developer Guide, and Reference
- Docusaurus with custom amber/gold theme matching the landing page branding
- GitHub Actions workflow to deploy landing page + docs to GitHub Pages
- Landing page at root, docs at /docs/ on hermes-agent.nousresearch.com
- Content extracted and restructured from existing repo docs (README, AGENTS.md, CONTRIBUTING.md, docs/)
- Auto-deploy on push to main when website/ or landingpage/ changes

website/docs/getting-started/updating.md

@@ -0,0 +1,80 @@
+---
+sidebar_position: 3
+title: "Updating & Uninstalling"
+description: "How to update Hermes Agent to the latest version or uninstall it"
+---
+
+# Updating & Uninstalling
+
+## Updating
+
+Update to the latest version with a single command:
+
+```bash
+hermes update
+```
+
+This pulls the latest code, updates dependencies, and prompts you to configure any new options that were added since your last update.
+
+:::tip
+After updating, run `hermes config check` to see if there are new configuration options available, then `hermes config migrate` to interactively add any missing ones.
+:::
+
+### Updating from Messaging Platforms
+
+You can also update directly from Telegram, Discord, Slack, or WhatsApp by sending:
+
+```
+/update
+```
+
+This pulls the latest code, updates dependencies, and restarts the gateway.
+
+### Manual Update
+
+If you installed manually (not via the quick installer):
+
+```bash
+cd /path/to/hermes-agent
+export VIRTUAL_ENV="$(pwd)/venv"
+
+# Pull latest code and submodules
+git pull origin main
+git submodule update --init --recursive
+
+# Reinstall (picks up new dependencies)
+uv pip install -e ".[all]"
+uv pip install -e "./mini-swe-agent"
+uv pip install -e "./tinker-atropos"
+
+# Check for new config options
+hermes config check
+hermes config migrate   # Interactively add any missing options
+```
+
+---
+
+## Uninstalling
+
+```bash
+hermes uninstall
+```
+
+The uninstaller gives you the option to keep your configuration files (`~/.hermes/`) for a future reinstall.
+
+### Manual Uninstall
+
+```bash
+rm -f ~/.local/bin/hermes
+rm -rf /path/to/hermes-agent
+rm -rf ~/.hermes            # Optional — keep if you plan to reinstall
+```
+
+:::info
+If you installed the gateway as a system service, stop and disable it first:
+```bash
+hermes gateway stop
+# Linux: systemctl --user disable hermes-gateway
+# macOS: launchctl remove ai.hermes.gateway
+```
+:::