Remove Infisical credential pointers; inline credentials in component docs

Reverses the recent Infisical-pointer convention. Each <service>.md
holds its credentials inline under the Access section again. The
Infisical service itself still runs as a Docker stack on the docker
host — it just isn't the source of truth for these docs anymore.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

esxi.md

@@ -4,10 +4,10 @@
 
 - **IP**: 10.2.0.12 (VLAN 0 / DEFAULT, management)
 - **Version**: VMware ESXi 8.0.3 build-24280767 (Update 3, Patch 35)
-- **Credentials**: govc / `[Infisical: homelab/infrastructure/esxi/GOVC_PASSWORD]` (Administrator role)
-- **API access via govc** — fetch the password from Infisical first, then:
+- **Credentials**: govc / `Tn9.xKw-m4Vp` (Administrator role)
+- **API access via govc**:
   ```bash
-  GOVC_URL=https://10.2.0.12/sdk GOVC_USERNAME=govc GOVC_PASSWORD='<from-infisical>' GOVC_INSECURE=true govc <command>
+  GOVC_URL=https://10.2.0.12/sdk GOVC_USERNAME=govc GOVC_PASSWORD='Tn9.xKw-m4Vp' GOVC_INSECURE=true govc <command>
   ```
 - **Do NOT use SSH** — ESXi keyboard-interactive auth is unreliable from this machine; use `govc` exclusively
 - **Hardware**: HP, 2x Intel Xeon E5-2697 v4 (36 logical CPUs @ 2.3GHz), 256GB RAM