feat: remove ArgoCD Image Updater, replaced by Forgejo webhook

Image promotion now handled by api-gw webhook endpoint
(/v1/webhooks/forgejo) which patches ArgoCD Application CRs
on Forgejo package push events (homelab-frontend PR #55).

- Delete Image Updater Application and values
- Remove argocd-image-updater.argoproj.io annotations from all apps
- Registry secrets kept (used by webhook digest queries + imagePullSecrets)

k8s/argocd/apps/01-image-updater.yaml

@@ -1,33 +0,0 @@
-# ArgoCD Image Updater - auto-updates Application images from registry
-# Watches forgejo.riotpiao.com for new image tags and updates Applications
-apiVersion: argoproj.io/v1alpha1
-kind: Application
-metadata:
-  name: argocd-image-updater
-  namespace: argocd
-  finalizers:
-    - resources-finalizer.argocd.argoproj.io
-  annotations:
-    argocd.argoproj.io/sync-wave: "1"
-spec:
-  project: homelab
-  revisionHistoryLimit: 3
-  sources:
-    - repoURL: https://argoproj.github.io/argo-helm
-      chart: argocd-image-updater
-      targetRevision: "0.11.2"
-      helm:
-        valueFiles:
-          - $values/k8s/infra/argocd-image-updater/values.yaml
-    - repoURL: https://forgejo.riotpiao.com/riotpiao-poimen/homelab.git
-      targetRevision: main
-      ref: values
-  destination:
-    server: https://kubernetes.default.svc
-    namespace: argocd
-  syncPolicy:
-    automated:
-      prune: true
-      selfHeal: true
-    syncOptions:
-      - CreateNamespace=false

k8s/argocd/apps/30-security.yaml

@@ -152,13 +152,8 @@ metadata:
   namespace: argocd
   annotations:
     argocd.argoproj.io/sync-wave: "3"
-    argocd-image-updater.argoproj.io/image-list: runner=forgejo.riotpiao.com/rock/forgejo-runner-golang
-    argocd-image-updater.argoproj.io/runner.update-strategy: newest-build
-    argocd-image-updater.argoproj.io/runner.allow-tags: regexp:^[0-9a-f]{7}$|^latest$|^v[0-9]+$
-    argocd-image-updater.argoproj.io/runner.helm.image-name: runner.image.repository
-    argocd-image-updater.argoproj.io/runner.helm.image-tag: runner.image.tag
-    argocd-image-updater.argoproj.io/write-back-method: git
-    argocd-image-updater.argoproj.io/git-branch: main
+    # Image promotion: Forgejo package webhook → api-gw.
+    # Replaced ArgoCD Image Updater (removed 2026-09-10).
 spec:
   project: homelab
   source:
@@ -180,13 +175,8 @@ metadata:
   namespace: argocd
   annotations:
     argocd.argoproj.io/sync-wave: "3"
-    argocd-image-updater.argoproj.io/image-list: runner=forgejo.riotpiao.com/rock/forgejo-runner-node
-    argocd-image-updater.argoproj.io/runner.update-strategy: newest-build
-    argocd-image-updater.argoproj.io/runner.allow-tags: regexp:^[0-9a-f]{7}$|^latest$|^v[0-9]+$
-    argocd-image-updater.argoproj.io/runner.helm.image-name: runner.image.repository
-    argocd-image-updater.argoproj.io/runner.helm.image-tag: runner.image.tag
-    argocd-image-updater.argoproj.io/write-back-method: git
-    argocd-image-updater.argoproj.io/git-branch: main
+    # Image promotion: Forgejo package webhook → api-gw.
+    # Replaced ArgoCD Image Updater (removed 2026-09-10).
 spec:
   project: homelab
   source:
@@ -211,13 +201,8 @@ metadata:
   namespace: argocd
   annotations:
     argocd.argoproj.io/sync-wave: "3"
-    argocd-image-updater.argoproj.io/image-list: runner=forgejo.riotpiao.com/rock/forgejo-runner-rust
-    argocd-image-updater.argoproj.io/runner.update-strategy: newest-build
-    argocd-image-updater.argoproj.io/runner.allow-tags: regexp:^[0-9a-f]{7}$|^latest$|^v[0-9]+$
-    argocd-image-updater.argoproj.io/runner.helm.image-name: runner.image.repository
-    argocd-image-updater.argoproj.io/runner.helm.image-tag: runner.image.tag
-    argocd-image-updater.argoproj.io/write-back-method: git
-    argocd-image-updater.argoproj.io/git-branch: main
+    # Image promotion: Forgejo package webhook → api-gw.
+    # Replaced ArgoCD Image Updater (removed 2026-09-10).
 spec:
   project: homelab
   source:

k8s/argocd/apps/55-api-gateway.yaml

@@ -36,11 +36,9 @@ metadata:
     app.kubernetes.io/component: gateway
   annotations:
     argocd.argoproj.io/sync-wave: "7"
-    # ArgoCD Image Updater - auto-update on new image push
-    argocd-image-updater.argoproj.io/image-list: gw=forgejo.riotpiao.com/rock/api-gateway
-    argocd-image-updater.argoproj.io/gw.update-strategy: digest
-    argocd-image-updater.argoproj.io/gw.allow-tags: regexp:^latest$
-    argocd-image-updater.argoproj.io/write-back-method: argocd
+    # Image promotion: Forgejo package webhook → api-gw /v1/webhooks/forgejo
+    # → patches this Application's kustomize.images via k8s API.
+    # Replaced ArgoCD Image Updater (removed 2026-09-10).
 spec:
   project: homelab
   revisionHistoryLimit: 3

k8s/argocd/apps/60-applications.yaml

@@ -246,11 +246,8 @@ metadata:
   namespace: argocd
   annotations:
     argocd.argoproj.io/sync-wave: "8"
-    # ArgoCD Image Updater - auto-update on new image push
-    argocd-image-updater.argoproj.io/image-list: app=forgejo.riotpiao.com/rock/portfolio
-    argocd-image-updater.argoproj.io/app.update-strategy: digest
-    argocd-image-updater.argoproj.io/app.allow-tags: regexp:^latest$
-    argocd-image-updater.argoproj.io/write-back-method: argocd
+    # Image promotion: Forgejo package webhook → api-gw.
+    # Replaced ArgoCD Image Updater (removed 2026-09-10).
 spec:
   project: homelab
   source:

k8s/argocd/apps/70-poimen.yaml

@@ -27,15 +27,10 @@ metadata:
     app.kubernetes.io/part-of: poimen
   annotations:
     argocd.argoproj.io/sync-wave: "7"
-    # ── Image Updater ─────────────────────────────────────────────────────────
-    argocd-image-updater.argoproj.io/image-list: "workflows=forgejo.riotpiao.com/riotpiao-poimen/poimen-workflows,memory=forgejo.riotpiao.com/riotpiao-poimen/poimen-memory,frontend=forgejo.riotpiao.com/riotpiao-poimen/poimen-frontend"
-    argocd-image-updater.argoproj.io/workflows.update-strategy: digest
-    argocd-image-updater.argoproj.io/workflows.allow-tags: regexp:^latest$
-    argocd-image-updater.argoproj.io/memory.update-strategy: digest
-    argocd-image-updater.argoproj.io/memory.allow-tags: regexp:^latest$
-    argocd-image-updater.argoproj.io/frontend.update-strategy: digest
-    argocd-image-updater.argoproj.io/frontend.allow-tags: regexp:^latest$
-    argocd-image-updater.argoproj.io/write-back-method: argocd
+    # ── Image promotion ──────────────────────────────────────────────────────
+    # Forgejo package webhook → api-gw patches kustomize.images per source.
+    # Source index mapping: 0=workflows, 1=memory, 3=frontend.
+    # Replaced ArgoCD Image Updater (removed 2026-09-10).
 spec:
   project: homelab
   # Multi-source: each repo owns its own k8s manifests.

k8s/argocd/apps/71-poimen-toolkit.yaml

@@ -5,11 +5,9 @@ metadata:
   namespace: argocd
   annotations:
     argocd.argoproj.io/sync-wave: "7"
-    argocd-image-updater.argoproj.io/image-list: |
-      controller=ghcr.io/riotpiao-poimen/poimen-toolkit-controller
-    argocd-image-updater.argoproj.io/controller.update-strategy: digest
-    argocd-image-updater.argoproj.io/controller.allow-tags: regexp:^latest$
-    argocd-image-updater.argoproj.io/write-back-method: argocd
+    # Image promotion: Forgejo package webhook → api-gw.
+    # Tracks: poimen-toolkit-controller, pi-worker.
+    # Replaced ArgoCD Image Updater (removed 2026-09-10).
 spec:
   project: homelab
   source: