Bootstrap Homelab-Docs wiki

Initial documentation of the hubris Proxmox homelab as a cross-linked
markdown wiki. Per-node pages, cross-cutting infrastructure pages, an
investigation log, and an operations cheatsheet. Each node and topic
ends with a Changelog section so changes can be tracked in-place going
forward.

Refreshed against live state on 2026-04-28 — 14 active LXCs (109
syncthing currently stopped) + 1 VM (108 haos). Reflects post-A/B-test
state of the 2026-04-21 hubris crash-loop investigation.

containers/116-heaper.md

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+# 116 — `heaper`
+
+Single-purpose container for the "heaper" workload. Mounts `/mnt/library` and reads/writes under `/mnt/library/heaper`.
+
+## At a glance
+- **Hostname:** `heaper`
+- **IP:** `192.168.8.116`
+- **Privilege:** privileged
+- **Resources:** 2 cores / 2 GiB RAM / 10 GiB rootfs
+- **Mounts:** `/mnt/library` ↔ `/mnt/library`
+- **Public hostname:** none
+
+## Permissions
+Member of the [media GID 10000](../infrastructure/media-permissions.md) standard via `www-data` (the data subtree at `/mnt/library/heaper` is single-container, so it stays out of the shared setgid group treatment, but the LXC has the standard group hookup).
+
+## Related
+- [Hubris host](../hosts/hubris.md)
+- [Media permissions](../infrastructure/media-permissions.md)
+
+## Changelog
+
+### 2026-04-28 — wiki entry created
+Stub. Detail what heaper actually does the next time we touch this LXC.