Add Arcane stack and clean up deprecated files

- Add new Arcane application stack
- Move aliases.sh to scripts/ directory
- Remove deprecated files (IMPLEMENTATION_COMPLETE.md, markup.yml, release notes)
- Remove standalone traefik docker-compose (now part of core stack)
- Update documentation (ai-vscode-setup.md, docker-guidelines.md, core README)

scripts/aliases.sh

@@ -0,0 +1,4 @@
+alias ll='ls -alF'
+alias dkrtable='docker ps --format "table {{.Names}}\t{{.Status}}\t{{.RunningFor}}"'
+alias dkrrecreate='docker compose up -d --force-recreate'
+alias fixpermissions='sudo chown -R 1000:1000 /opt ~'