Restructure compose mirror: stacks/ grouped by purpose, not by host

Replaces rocky-docker-lxc/, caddy-vm/, monitoring-vm/, and automation/
with a single stacks/ tree grouped by function (identity-and-security,
platform, media, productivity, dev-tools) - 55 stacks total, every one
a real directory in the private repos today.

Resolves all outstanding drift: adds Wazuh (previously entirely
missing), Firefly III and Postiz (never mirrored), the internal-zone
Caddy instance and the Cron Scheduler's separate NocoDB instance
(both previously conflated with their counterparts under one shared
folder); renames Calibre-Web to calibre-web-automated and splits
Kodi-MariaDB into kodi + mariadb-latest to match what the private
repos actually run now; drops the decommissioned NetBox stack.

Also removes automation/iac/old-content/ and
automation/ansible/old-playbooks/ in the same pass - both folders
were entirely stale content describing a superseded architecture
(GitLab instead of Gitea, HAProxy+mTLS SSO instead of the current
Caddy+Authentik setup), now replaced by docs/iac-pipeline.md.

stacks/productivity/paperless-ngx/docker-compose.yaml

@@ -0,0 +1,76 @@
+services:
+  broker:
+    image: docker.io/library/redis:7
+    container_name: paperless-redis
+    restart: unless-stopped
+    volumes:
+      - /path/to/paperless/redisdata:/data
+    networks:
+      - paperless-net
+
+  db:
+    image: docker.io/library/postgres:15
+    container_name: paperless-postgres
+    restart: unless-stopped
+    volumes:
+      - /path/to/paperless/pgdata:/var/lib/postgresql/data
+    environment:
+      POSTGRES_DB: ${POSTGRES_DB}
+      POSTGRES_USER: ${POSTGRES_USER}
+      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD}
+    networks:
+      - paperless-net
+
+  webserver:
+    image: ghcr.io/paperless-ngx/paperless-ngx:latest
+    container_name: paperless
+    restart: unless-stopped
+    depends_on:
+      - db
+      - broker
+      - gotenberg
+      - tika
+    ports:
+      - "${HTTP_PORT}:8000"
+    volumes:
+      - /path/to/paperless/data:/usr/src/paperless/data
+      - /path/to/paperless/media:/usr/src/paperless/media
+      - /path/to/paperless/export:/usr/src/paperless/export
+      - /path/to/paperless/consume:/usr/src/paperless/consume
+    env_file: .env
+    environment:
+      PAPERLESS_REDIS: redis://broker:6379
+      PAPERLESS_DBHOST: db
+      PAPERLESS_DBPASS: ${PAPERLESS_DBPASS}
+      PAPERLESS_TIKA_ENABLED: 1
+      PAPERLESS_TIKA_GOTENBERG_ENDPOINT: http://gotenberg:3000
+      PAPERLESS_TIKA_ENDPOINT: http://tika:9998
+      PAPERLESS_URL: ${PAPERLESS_URL}
+      PAPERLESS_ADMIN_USER: ${PAPERLESS_ADMIN_USER}
+      PAPERLESS_ADMIN_PASSWORD: ${PAPERLESS_ADMIN_PASSWORD}
+    networks:
+      - paperless-net
+
+  gotenberg:
+    image: docker.io/gotenberg/gotenberg:7.10
+    container_name: paperless-gotenberg
+    restart: unless-stopped
+    # The gotenberg chromium route is used to convert .eml files. We do not
+    # want to allow external content like tracking pixels or even javascript.
+    command:
+      - "gotenberg"
+      - "--chromium-disable-javascript=true"
+      - "--chromium-allow-list=file:///tmp/.*"
+    networks:
+      - paperless-net
+
+  tika:
+    image: docker.io/apache/tika:latest
+    container_name: paperless-tika
+    restart: unless-stopped
+    networks:
+      - paperless-net
+
+networks:
+  paperless-net:
+    external: true