fix(argocd): update repoURL from rock/homelab to riotpiao-poimen/homelab

Repo transferred to riotpiao-poimen org. Old URL returns 301 redirect
which ArgoCD doesn't follow — all 26 apps stopped syncing.

Live cluster already patched via kubectl. This commit persists the fix.

k8s/argocd/apps/00-substrate.yaml

@@ -21,7 +21,7 @@ spec:
       helm:
         valueFiles:
           - $values/k8s/bootstrap/cert-manager/cert-manager-values.yaml
-    - repoURL: https://forgejo.riotpiao.com/rock/homelab.git
+    - repoURL: https://forgejo.riotpiao.com/riotpiao-poimen/homelab.git
       targetRevision: main
       ref: values
   destination:
@@ -93,7 +93,7 @@ spec:
   project: homelab
   revisionHistoryLimit: 3
   source:
-    repoURL: https://forgejo.riotpiao.com/rock/homelab.git
+    repoURL: https://forgejo.riotpiao.com/riotpiao-poimen/homelab.git
     targetRevision: main
     # A real kustomization.yaml (resources: the 3 issuer/CA files) renders these
     # deterministically. The previous directory.include with bare filenames
@@ -127,7 +127,7 @@ spec:
   project: homelab
   revisionHistoryLimit: 3
   source:
-    repoURL: https://forgejo.riotpiao.com/rock/homelab.git
+    repoURL: https://forgejo.riotpiao.com/riotpiao-poimen/homelab.git
     targetRevision: main
     path: k8s/bootstrap/ingress
   destination:
@@ -149,7 +149,7 @@ metadata:
 spec:
   project: homelab
   source:
-    repoURL: https://forgejo.riotpiao.com/rock/homelab.git
+    repoURL: https://forgejo.riotpiao.com/riotpiao-poimen/homelab.git
     targetRevision: main
     path: k8s/infra/cluster-maintenance
   destination:
@@ -177,7 +177,7 @@ spec:
       valueFiles:
         - $values/k8s/bootstrap/kyverno/kyverno-values.yaml
   sources:
-    - repoURL: https://forgejo.riotpiao.com/rock/homelab.git
+    - repoURL: https://forgejo.riotpiao.com/riotpiao-poimen/homelab.git
       targetRevision: main
       ref: values
   destination:
@@ -200,7 +200,7 @@ metadata:
 spec:
   project: homelab
   source:
-    repoURL: https://forgejo.riotpiao.com/rock/homelab.git
+    repoURL: https://forgejo.riotpiao.com/riotpiao-poimen/homelab.git
     targetRevision: main
     path: k8s/bootstrap/kyverno
   destination: