authentik: migrate from LXC 124 to VPS; eliminate mesh bootstrap deadlock

Moved Authentik (2026.2.2 -> 2026.5.2, +Redis, dedicated auth Docker net)
off LXC 124 onto the VPS so netbird-mgmt's OIDC dependency no longer requires
the mesh it authenticates. depends_on: service_healthy makes the deadlock
structurally impossible. Full Postgres DB migrated (users/apps/passwords/groups).

- investigations/2026-05-31-authentik-vps-migration.md: full writeup + lessons
- 124-authentik: migration banner + changelog (now legacy; dnsmasq stays)
- dns: auth.hubris.network -> 82.165.190.79; NetBird resolver cache gotcha
- ingress: auth served by local container via Docker-provider labels (not cert-mirror)
- mesh: follow-up entry superseding the morning band-aid; bootstrap note obsolete

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

infrastructure/mesh.md

@@ -116,6 +116,9 @@ Recipe for container-config changes (e.g. adding `extra_hosts`) on Portainer-man
 
 ## Changelog
 
+### 2026-05-31 (later) — Authentik moved to the VPS; mesh-dependency for auth eliminated (supersedes the band-aid below)
+The earlier same-day fix routed `auth.hubris.network` through VPS Traefik → Caddy → LXC 124 **over the mesh**. That restored service but re-created the original fragility: if the mesh is dark when management restarts, the `192.168.8.175` backend is unreachable and management crash-loops again (the "Bootstrap note" in the entry below). That note is now **obsolete** — Authentik was migrated onto the VPS itself, so OIDC no longer touches the mesh. The `auth-authentik` → `192.168.8.175` route and its `skip-verify` transport were removed from `/opt/traefik-dynamic.yaml`; `auth.hubris.network` is now served by a local `authentik-server` container via Traefik Docker-provider labels, and netbird-mgmt has `depends_on: authentik-server: condition: service_healthy`. The socat / reverse-SSH bootstrap dance is no longer needed. Full detail: [2026-05-31 Authentik VPS migration](../investigations/2026-05-31-authentik-vps-migration.md).
+
 ### 2026-05-31 — Netbird mesh recovered; auth.hubris.network exposed via VPS Traefik
 
 **Symptom:** `netbird-mgmt` crash-looped for ~9 days (since 2026-05-21 migration). All peers showed `Connecting`, management returned `404 (Not Found)` for gRPC → `EOF` on startup.