Add scripts/hermes-wiki-serve.sh wrapper + README update

Wiki-Serve-Skript war bisher in ~/.local/bin/, jetzt auch im Repo versioniert,
damit Updates via git pull verfügbar sind.

CHANGELOG korrigiert: server.py jetzt +12 Zeilen statt +7 (Bug-Fix für trailing
'/' ist mit drin).

README.md

@@ -49,6 +49,25 @@ tailscale serve --bg --https=443 http://127.0.0.1:8765
 # Access via https://<hostname>.<tailnet>.ts.net/
 ```
 
+### One-command setup via wrapper script
+
+The `scripts/hermes-wiki-serve.sh` wrapper handles start/stop/logs/status, PID-tracking, log-files, and Tailscale integration:
+
+```bash
+# Install: copy script to PATH
+cp scripts/hermes-wiki-serve.sh ~/.local/bin/
+chmod +x ~/.local/bin/hermes-wiki-serve.sh
+
+# Use:
+hermes-wiki-serve.sh start       # starts server, sets up tailscale serve
+hermes-wiki-serve.sh status      # shows PID, Tailscale-URL, health
+hermes-wiki-serve.sh logs        # tail all logs
+hermes-wiki-serve.sh stop        # stops server (keeps tailscale running)
+hermes-wiki-serve.sh restart     # stop + start
+```
+
+The script defaults to using this repo at `~/repos/hermes-wiki-viewer/`. Override via `HERMES_WIKI_OWV_DIR`.
+
 ## Customization
 
 `vault-custom.js` is Lukas' own code, organized into clear sections: