Phase 1-4: full doc reorg

Phase 1 — fix stale state after strong migration (Phase 1+2, 2026-07-05)
  - README: corrected IPs (jellyfin 206→246, arriman 132→245, etc.),
    added missing containers (128 trmnl, 129 house, 133 seanime, 134 romm,
    124 authentik), updated last-refreshed date, added strong host context
  - containers/101-jellyfin.md: IP 206→246, host hubris→strong, mount
    /mnt/library→/mnt/media_local, GPU 760M→680M+RX7600, privilege→priv
  - containers/118-elementsynapse.md: IP 239→242, added Host: strong
  - containers/122-arriman.md: IP 132→245, mount→/mnt/media_local, added Host
  - containers/129-house.md: IP 212→244, added Host: strong
  - containers/130-grimmory.md: IP 213→247, mount→/mnt/media_local, added Host
  - containers/121-caddy.md: fixed site list (books→grimmory, removed auth→VPS,
    added house, roms, teddy, trmnl)
  - hosts/strong.md: updated At-a-glance to reflect 7 LXCs hosted
  - containers/123-claudio-bot.md, 127-mule-photos-new.md: archived to
    containers/archive/ (were destroyed LXCs with living pages)
  - inventory.yaml: verified correct — no changes needed

Phase 2 — structural cleanup
  - infrastructure/index.md: one-page overview of all cross-cutting systems
  - runbooks/: moved runbook-budget-from-csv.md and runbook-dpkg-interrupted.md
    from operations/ with YAML frontmatter added
  - plans/done/: moved 4 completed plans out of active view; updated index
  - vms/index.md: added VM index page

Phase 3 — navigation & discoverability
  - GLOSSARY.md: term definitions (Authentik, Caddy, LXC, VAAPI, etc.)
  - README: added table of contents, links to glossary + infrastructure index
  - investigations/: archived 2 resolved cases (crash-loop, authentik-migration)
    to investigations/archive/; updated index with active vs archived sections

Phase 4 — ongoing discipline
  - CONTRIBUTING.md: documented same-session update rule with explicit checklist
  - README: replaced full LXC table with summary + link to containers/index.md
    (single source of truth; de-duplication)

hosts/strong.md

@@ -6,7 +6,7 @@ Proxmox VE on 2026-07-01. No LXCs/VMs deployed on it yet.
 
 ## At a glance
 
-- **Role:** Proxmox VE 9.2.3 cluster member (kernel `7.0.12-1-pve`)
+- **Role:** Proxmox VE 9.2.3 cluster member (kernel `7.0.12-1-pve`) — hosts [7 LXCs](../containers/index.md) migrated from hubris (Phase 1+2, 2026-07-05)
 - **Naming:** the OS/cluster hostname is `strong` (leftover from install,
   kept as-is). This wiki page and `inventory.yaml` also use `strong` as of
   2026-07-01 — earlier the same day the inventory entry was briefly named