docs(paperless): document Office ingestion support

Document Paperless Tika/Gotenberg sidecars, supported Office/OpenDocument ingestion formats, stack paths, validation/deploy procedure, and verification commands. Updates service inventory and architecture overview so PD docs match the deployed documents stack.

docs/operations/PAPERLESS.md

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+# Paperless-NGX Operations
+
+## Stack Location
+
+- Compose path on PD: `/mnt/docker-ssd/docker/compose/documents/docker-compose.yaml`
+- Appdata: `/mnt/docker-ssd/docker/appdata/paperless/`
+- Consume source: `/mnt/unraid/data/paperless/consume`
+- Consume container path: `/usr/src/paperless/consume`
+
+## Office Document Ingestion
+
+Paperless-NGX uses internal-only Tika and Gotenberg sidecars:
+
+- Tika endpoint: `http://tika:9998`
+- Gotenberg endpoint: `http://gotenberg:3000`
+- Network: `documents_paperless_internal`
+- Host ports: none
+- Resource limits: Tika `512m`, Gotenberg `256m`
+
+This enables ingestion/extraction for Office and OpenDocument files such as:
+
+- `.docx`, `.doc`
+- `.pptx`, `.xlsx`
+- `.odt`, `.ods`, `.odp`
+
+## Deploy / Restart Procedure
+
+Validate before changing running containers:
+
+```bash
+cd /mnt/docker-ssd/docker/compose/documents
+docker compose --env-file .env config
+```
+
+Deploy with compose only:
+
+```bash
+docker compose --env-file .env down && docker compose --env-file .env up -d
+```
+
+Never use `systemctl restart docker` on PD for this stack.
+
+## Verification
+
+```bash
+docker compose --env-file .env ps
+docker logs paperless --tail 200 | grep -Ei 'tika|gotenberg'
+docker exec paperless sh -lc 'echo "$PAPERLESS_TIKA_ENABLED $PAPERLESS_TIKA_ENDPOINT $PAPERLESS_TIKA_GOTENBERG_ENDPOINT"; mount | grep /usr/src/paperless/consume'
+```