feat: add ByteStash service for code snippet management

- Add ByteStash Docker service configuration and deployment
- Configure subdomain routing through Caddy
- Add DNS record for ByteStash subdomain
- Update development service category to include ByteStash

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

dns.yml

@@ -27,6 +27,8 @@
             ip: "152.53.36.98"
           - name: "code"
             ip: "152.53.36.98"
+          - name: "snippets"
+            ip: "152.53.36.98"
           - name: cal
             ip: "152.53.36.98"
           - name: phlog
@@ -49,6 +51,8 @@
             ip: "152.53.36.98"
           - name: gotify-assistant
             ip: "152.53.36.98"
+          - name: pdg
+            ip: "152.53.36.98"
       - name: nerder.land
         dns_records:
           - name: "forms"