Sync workspace with Gitea: merge June/July session docs
- README + siklos-docker-services: add authentik/searxng/beszel rows, photos VM section,
2026-06-24 cleanup notes, 2026-07-03 Portainer conversion note (jgpc naming preserved)
- Add: authentik setup docs, frigate docs/config, OCIS migration docs, AdventureLog bug
report, install-native-apps.sh, workstation-disk-analysis.md
- Remove obsolete: cgitta-nextcloud-zip-analysis.md, kopia-restore-guide.md
- .gitignore: ocis-credentials.md (secrets stay local), *.bak