Pull Proxmox LXC app configs via SSH and document all CTs.

Add pull-lxc-from-proxmox.py using Proxmox API + pct exec for running
containers (vaultwarden, linkwarden, paymenter, NPM, etc). Stub apps for
stopped LXCs with proxmox.meta.yaml and updated lxc-inventory with live IPs.

Co-authored-by: Cursor <cursoragent@cursor.com>

apps/immich/README.md

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+# immich
+
+| | |
+|---|---|
+| **Proxmox** | pve (CT 112) |
+| **Status** | gestopt |
+
+Container-definitie: `apps/proxmox/hosts/pve/lxc/112.conf`
+
+Start CT en draai `scripts/pull-lxc-from-proxmox.py` opnieuw om app-config te pullen.

apps/immich/proxmox.meta.yaml

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+# Auto-generated
+host: pve
+proxmox_ip: 192.168.1.216
+vmid: 112
+hostname: immich
+status: stopped