docs: move narrative wiki under knowledge/wiki/ (phase 3)

Problem: node and cross-cutting narratives lived at the repo root
(containers/, vms/, infrastructure/, host .md files), interleaved with the
machine-readable substrate.

Change:
- Move containers/ -> knowledge/wiki/containers/, vms/ -> knowledge/wiki/vms/,
  infrastructure/ -> knowledge/wiki/infrastructure/, hosts/{hubris,strong}.md ->
  knowledge/wiki/hosts/, infrastructure/references/ -> knowledge/sources/references/,
  GLOSSARY.md -> knowledge/GLOSSARY.md.
- Add knowledge/{index.md,log.md,sources/index.md} scaffolding.
- Rewrite all relative links repo-wide via a path-resolving mapper (inbound +
  outbound + between-moved-files), including .hermes/, runbooks, operations,
  investigations, plans, README, AGENTS.
- Repoint inventory.yaml doc_page fields and regenerate hosts/*.yaml (which
  embed doc_page); update oikos/gen-topology.py output path, candidate doc
  paths, and footer links; update code-comment doc paths.

Substrate untouched in place: inventory.yaml, hosts/*.yaml (regenerated,
idempotent), oikos/ code, mcp/, secrets/, bin/.

Verification:
- Logical broken-link set identical to pre-move baseline (net 128 -> 127; the
  topology regen fixed one, introduced none). Remaining are pre-existing refs
  to destroyed/archived nodes, out of scope for this move.
- gen-topology.py --check exit 0 (in sync); cards carry knowledge/wiki/ doc paths.
- build_host_files.py idempotent; all inventory doc_page targets resolve.
- MCP contract verified: get_page/search_docs/get_changelog resolve moved pages.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

knowledge/wiki/containers/103-paperless.md

@@ -0,0 +1,41 @@
+# 103 — `paperless`
+
+Paperless-ngx for document management. Ingests scans / PDFs from `/mnt/library/documents` and serves OCR'd indexed copies.
+
+## At a glance
+- **Hostname:** `paperless`
+- **IP:** `192.168.8.130`
+- **Privilege:** privileged
+- **Resources:** 2 cores / 3 GiB RAM / 8 GiB rootfs
+- **Mounts:** `/mnt/library` ↔ `/mnt/library` (consumes `documents/`)
+- **Public hostname:** [`paperless.hubris.network`](../infrastructure/dns.md) → [caddy](121-caddy.md) → `:8000`
+
+## Service / port map
+
+| Service             | Listen  | Notes                            |
+| ------------------- | ------- | -------------------------------- |
+| paperless-webserver | `:8000` | HTTP                             |
+| paperless-task-queue, paperless-scheduler, paperless-consumer | — | systemd workers |
+
+## Auth
+Behind [Authentik forward-auth](124-authentik.md). API path `/api/*` bypasses forward-auth (mobile clients can't follow the browser login redirect; bearer token still enforces auth on `/api`). Header propagation: `PAPERLESS_ENABLE_HTTP_REMOTE_USER=true` and `PAPERLESS_HTTP_REMOTE_USER_HEADER_NAME=HTTP_X_AUTHENTIK_USERNAME` in `/opt/paperless/paperless.conf`. Django auto-creates matching users on first SSO login.
+
+## Storage
+- Documents at `/mnt/library/documents` (owner `www-data:www-data`, mode 750 — *not* on the `media` group, by design).
+
+## Known issues
+- ~~Disk usage was 86.9% at last legacy monitor reading on 2026-04-21~~ — resolved by growing rootfs to 16 GiB on 2026-05-15.
+
+## Related
+- [Authentik](124-authentik.md)
+- [Caddy](121-caddy.md)
+- [DNS](../infrastructure/dns.md)
+- [Monitoring](../infrastructure/monitoring.md)
+
+## Changelog
+
+### 2026-04-28 — wiki entry created
+Initial documentation.
+
+### 2026-04-21 — wired into Authentik forward-auth
+Cookie-domain-level proxy provider, embedded outpost binding. `/api/*` bypass added in Caddy site block to keep mobile clients working.