credentials.md: add Uranus entry, note IP reuse on Saturn

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

credentials.md

@@ -132,13 +132,27 @@ export OP_SERVICE_ACCOUNT_TOKEN="op://Infrastructure/Service Account Auth Token:
   - WAN (Fiber): 98.181.90.163/31
   - Public IPs: 72.194.62.2-10, 70.175.28.51-57
 
-### Saturn (172.16.3.21) - DECOMMISSIONED
-- **Host:** 172.16.3.21
+### Saturn - DECOMMISSIONED
+- **Host:** formerly 172.16.3.21 (IP reused by Uranus 2026-04)
 - **User:** op://Infrastructure/Saturn (DECOMMISSIONED)/username
 - **Password:** op://Infrastructure/Saturn (DECOMMISSIONED)/password
 - **OS:** Unraid 6.x
 - **Status:** DECOMMISSIONED - Migration to Jupiter complete (Seafile migrated 2025-12-27)
 
+### Uranus (Unraid Secondary - 172.16.3.21)
+- **Host:** 172.16.3.21
+- **Hostname:** Uranus
+- **User:** root
+- **Password:** `bash D:/vault/scripts/vault.sh get-field infrastructure/uranus-unraid.sops.yaml credentials.password`
+- **OS:** Unraid 7.2.4 (kernel 6.12.54)
+- **Hardware:** Dell PowerEdge R730xd
+- **CPU:** Intel Xeon E5-2630 v3 @ 2.40GHz, 32 threads
+- **RAM:** 7.7 GiB (LOW — upgrade planned before Windows build VM deploys)
+- **Array:** 6+ x 12 TB + 16 TB drives (~75 TB raw)
+- **Role:** Additional storage, Pavon Archive (SMB share `Storage`), future Windows build VM
+- **History:** Formerly 'Pavon' server at 172.16.1.33 (client-side). Renamed and re-IP'd April 2026 when moved into ACG infrastructure.
+- **OwnCloud integration:** external storage mount ID 6 on `cloud.acghosting.com` — SMB `Storage` share mounted as `/Archive` for user `pavon`.
+
 ### OwnCloud VM (172.16.3.22)
 - **Host:** 172.16.3.22
 - **Hostname:** cloud.acghosting.com