docs: migrate LiveSync to edge2 CT 104; decommission TAK/Watchtower/echo6-agent/Nexus

- LiveSync -> edge2 CT 104 (CouchDB cold volume-tar; two-token Caddy cutover; per-user JWT)
- Decommissioned + code-archived to Forge: TAK+SIGIL, Watchtower, echo6-agent, nexus-hub, nexus-agent
- Removed tak.echo6.co + wt.echo6.co Caddy blocks, dnsmasq entries, and GoDaddy A records
- runbook: add CouchDB data variant (Variant D) + multi-token Caddy cutover example
- fix stray 'f ' artifact in environment.md

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

.obsidian/workspace.json

@@ -185,6 +185,7 @@
   },
   "active": "ea4cc678c44e8b67",
   "lastOpenFiles": [
+    "docs/hardware/environment.md.tmp.40509.b6a12d701b09",
     "docs/hardware/environment.md",
     "nodes/ots-ct.md",
     "mocs/mesh.md",
@@ -210,7 +211,6 @@
     "nodes/meshai-ct.md",
     "nodes/meshmonitor-ct.md",
     "nodes/utility.md",
-    "mocs/vault-conventions.md",
     "mocs",
     "hardware",
     "services",

docs/hardware/environment.md

@@ -11,7 +11,6 @@ Five nodes running Proxmox VE:
 | cloud   | 192.168.1.242 | 100.64.0.4  | Intel i7-12700T, 512GB NVMe                     | 32GB DDR4-3200 | Cloud storage, personal services |
 | media   | 192.168.1.243 | 100.64.0.3  | Intel i7-14700T, 2x 512GB NVMe                  | 32GB DDR5-5600 | Media server, *arr stack         |
 | toc     | 192.168.1.244 | 100.64.0.13 | Workstation (i9-10900X)                         | 64GB DDR4      | GPU compute, AI/ML workloads     |
-f 
 ### Node Storage Details
 
 | Node | Primary Disk | Secondary Disk |