Fix homepage Admin bookmark icons for Pulumi and ArgoCD

- Changed 'pulumi' to 'si-pulumi' (Simple Icons prefix required)
- Changed 'argocd' to 'argo-cd' (Dashboard Icons uses hyphenated name)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

argocd/manifests/homepage/values.yaml

@@ -157,10 +157,10 @@ config:
               icon: 1password
         - Pulumi:
             - href: https://app.pulumi.com/eblume/blumeops-tailnet
-              icon: pulumi
+              icon: si-pulumi
         - ArgoCD:
             - href: https://argocd.ops.eblu.me
-              icon: argocd
+              icon: argo-cd
 
   # Widgets on the page (info bar at top)
   widgets:

docs/changelog.d/fix-homepage-admin-icons.bugfix.md

@@ -0,0 +1 @@
+Fix broken icons for Pulumi and ArgoCD in homepage Admin bookmarks section.