chore(argocd): track main branch instead of prod for auto-sync on every commit

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

@@ -9,11 +9,9 @@
 # `POST /v1/chat/completions` covers every model. See
 # docs/adr/ADR-0001-retire-kong-for-go-gateway.md in the frontend repo.
 #
-# UPDATED 2026-08-21: Tracks prod branch of homelab-frontend (not main).
-# Image promotion via kustomization:
-#   cd k8s && kustomize edit set image forgejo.riotpiao.com/rock/api-gateway=forgejo.riotpiao.com/rock/api-gateway:<commit-sha>
-#   git add kustomization.yaml && git commit -m "chore(deploy): promote api-gateway to <commit-sha>"
-#   git push origin prod
+# UPDATED 2026-08-22: Tracks main branch of homelab-frontend (auto-syncs on each push).
+# Image built on every main commit with tag <commit-sha>.
+# ArgoCD auto-pulls the latest image (live reconciliation ~3min).
 #
 # Two sources:
 #   1. rock/homelab-frontend on the in-cluster Forgejo (prod branch) — the gateway's own
@@ -43,7 +41,7 @@ spec:
   revisionHistoryLimit: 3
   sources:
     - repoURL: https://forgejo.riotpiao.com/rock/homelab-frontend.git
-      targetRevision: prod
+      targetRevision: main
       path: k8s
     - repoURL: https://github.com/Riotpiaole/riotpiao.homelab.com.git
       targetRevision: main