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

jgpc/stirling-pdf/docker-compose.yml

@@ -1,18 +0,0 @@
-services:
-  stirling-pdf:
-    image: stirlingtools/stirling-pdf:latest
-    container_name: stirling-pdf
-    ports:
-      - "8081:8080"
-    volumes:
-      - /srv/docker/stirling-pdf/trainingData:/usr/share/tessdata
-      - /srv/docker/stirling-pdf/configs:/configs
-      - /srv/docker/stirling-pdf/customFiles:/customFiles
-      - /srv/docker/stirling-pdf/logs:/logs
-    environment:
-      - DOCKER_ENABLE_SECURITY=false
-      - INSTALL_BOOK_AND_ADVANCED_HTML_OPS=false
-      - LANGS=en_GB
-      - SECURITY_INITIALLOGIN_USERNAME=admin
-      - SECURITY_INITIALLOGIN_PASSWORD=stirling
-    restart: unless-stopped