Fix mirror org refs in ArgoCD apps and widen credential template (#266)

## Summary

- Widen `repo-creds-forge` URL prefix from `/eblume/` to host-wide `/` so it matches repos in all forge orgs (fixes `mirrors/` repos not getting SSH credentials)
- Update 8 ArgoCD app definitions from `eblume/<mirror>` → `mirrors/<mirror>` (immich-charts, cloudnative-pg-charts, external-secrets, connect-helm-charts)
- Fix stale alloy clone comment in Ansible defaults
- Bump immich v2.5.2 → v2.5.6 (bug-fix patches only)
- Update ArgoCD README bootstrap command and credential docs

## Context

Mirrors were migrated from `forge.ops.eblu.me/eblume/` to `forge.ops.eblu.me/mirrors/` in commit `cd57814`. Container Dockerfiles and image tags were updated, but ArgoCD app definitions and the repo credential template were missed, causing `ComparisonError` on apps that source Helm charts from mirrored repos.

## Deployment

1. Sync the ArgoCD `argocd` app first (picks up the widened credential template)
2. Sync the `apps` app (picks up new repo URLs for all 8 apps)
3. Verify immich resolves its ComparisonError: `argocd app get immich`
4. Sync immich to deploy v2.5.6: `argocd app sync immich`
5. Spot-check: `argocd app get external-secrets`, `argocd app get cloudnative-pg`, `argocd app get 1password-connect`

Reviewed-on: https://forge.ops.eblu.me/eblume/blumeops/pulls/266

argocd/apps/1password-connect-ringtail.yaml

@@ -14,7 +14,7 @@ metadata:
 spec:
   project: default
   sources:
-    - repoURL: ssh://forgejo@forge.ops.eblu.me:2222/eblume/connect-helm-charts.git
+    - repoURL: ssh://forgejo@forge.ops.eblu.me:2222/mirrors/connect-helm-charts.git
       targetRevision: connect-2.3.0
       path: charts/connect
       helm:

argocd/apps/1password-connect.yaml

@@ -20,7 +20,7 @@ metadata:
 spec:
   project: default
   sources:
-    - repoURL: ssh://forgejo@forge.ops.eblu.me:2222/eblume/connect-helm-charts.git
+    - repoURL: ssh://forgejo@forge.ops.eblu.me:2222/mirrors/connect-helm-charts.git
       targetRevision: connect-2.3.0
       path: charts/connect
       helm:

argocd/apps/cloudnative-pg.yaml

@@ -11,7 +11,7 @@ spec:
   project: default
   sources:
     # Helm chart from forge mirror (SSH via egress)
-    - repoURL: ssh://forgejo@forge.ops.eblu.me:2222/eblume/cloudnative-pg-charts.git
+    - repoURL: ssh://forgejo@forge.ops.eblu.me:2222/mirrors/cloudnative-pg-charts.git
       targetRevision: cloudnative-pg-v0.27.1
       path: charts/cloudnative-pg
       helm:

argocd/apps/external-secrets-crds-ringtail.yaml

@@ -11,7 +11,7 @@ metadata:
 spec:
   project: default
   source:
-    repoURL: ssh://forgejo@forge.ops.eblu.me:2222/eblume/external-secrets.git
+    repoURL: ssh://forgejo@forge.ops.eblu.me:2222/mirrors/external-secrets.git
     targetRevision: helm-chart-2.0.0
     path: config/crds/bases
     directory:

argocd/apps/external-secrets-crds.yaml

@@ -15,7 +15,7 @@ metadata:
 spec:
   project: default
   source:
-    repoURL: ssh://forgejo@forge.ops.eblu.me:2222/eblume/external-secrets.git
+    repoURL: ssh://forgejo@forge.ops.eblu.me:2222/mirrors/external-secrets.git
     targetRevision: helm-chart-2.0.0
     path: config/crds/bases
     directory:

argocd/apps/external-secrets-ringtail.yaml

@@ -13,7 +13,7 @@ metadata:
 spec:
   project: default
   sources:
-    - repoURL: ssh://forgejo@forge.ops.eblu.me:2222/eblume/external-secrets.git
+    - repoURL: ssh://forgejo@forge.ops.eblu.me:2222/mirrors/external-secrets.git
       targetRevision: helm-chart-2.0.0
       path: deploy/charts/external-secrets
       helm:

argocd/apps/external-secrets.yaml

@@ -14,7 +14,7 @@ metadata:
 spec:
   project: default
   sources:
-    - repoURL: ssh://forgejo@forge.ops.eblu.me:2222/eblume/external-secrets.git
+    - repoURL: ssh://forgejo@forge.ops.eblu.me:2222/mirrors/external-secrets.git
       targetRevision: helm-chart-2.0.0
       path: deploy/charts/external-secrets
       helm:

argocd/apps/immich.yaml

@@ -19,7 +19,7 @@ spec:
   project: default
   sources:
     # Helm chart from forge mirror (SSH via egress)
-    - repoURL: ssh://forgejo@forge.ops.eblu.me:2222/eblume/immich-charts.git
+    - repoURL: ssh://forgejo@forge.ops.eblu.me:2222/mirrors/immich-charts.git
       targetRevision: immich-0.10.3
       path: charts/immich
       helm:

argocd/manifests/argocd/README.md

@@ -30,11 +30,13 @@ argocd account update-password
 
 # 6. Apply repo-creds-forge credential template for SSH access to all forge repos
 PRIV_KEY=$(op read "op://vg6xf6vvfmoh5hqjjhlhbeoaie/csjncynh6htjvnh2l2da65y32q/private key?ssh-format=openssh")$'\n' && \
+KNOWN_HOSTS=$(ssh-keyscan -p 2222 forge.ops.eblu.me 2>/dev/null | grep ssh-rsa) && \
 kubectl create secret generic repo-creds-forge -n argocd \
   --from-literal=type=git \
-  --from-literal=url='ssh://forgejo@forge.ops.eblu.me:2222/eblume/' \
-  --from-literal=insecure=true \
-  --from-literal=sshPrivateKey="$PRIV_KEY" && \
+  --from-literal=url='ssh://forgejo@forge.ops.eblu.me:2222/' \
+  --from-literal=insecure=false \
+  --from-literal=sshPrivateKey="$PRIV_KEY" \
+  --from-literal=sshKnownHosts="$KNOWN_HOSTS" && \
 kubectl label secret repo-creds-forge -n argocd argocd.argoproj.io/secret-type=repo-creds
 
 # 7. Apply ArgoCD Applications (self-management + app-of-apps)
@@ -110,6 +112,6 @@ spec:
 
 - **TODO:** Secrets (`repo-creds-forge`) are not managed by ArgoCD and must be applied manually.
   Future improvement: integrate with a secrets operator (e.g., External Secrets).
-- The credential template (`repo-creds`) uses a URL prefix to match all repos under `eblume/`.
+- The credential template (`repo-creds`) uses a URL prefix to match all repos on forge.
 - ArgoCD uses Tailscale Ingress with Let's Encrypt for TLS termination.
 - The `--grpc-web` flag is required for CLI access through the Tailscale ingress.

argocd/manifests/argocd/external-secret-repo-forge.yaml

@@ -1,14 +1,4 @@
-# ExternalSecret for ArgoCD Forge SSH credentials
-#
-# Replaces the manual op inject workflow from repo-forge-secret.yaml.tpl
-#
-# 1Password item: "argocd-forge-ssh-key" in blumeops vault (Secure Note)
-# Field: "private-key-openssh"
-#
-# Note: Uses a separate Secure Note item because 1Password Connect doesn't
-# support the ?ssh-format=openssh query parameter that the CLI uses.
-#
-# This is a repo-creds (credential template) that matches ALL repos under eblume/
+# ArgoCD repo-creds template — matches all repos on forge via SSH
 #
 apiVersion: external-secrets.io/v1
 kind: ExternalSecret
@@ -29,9 +19,10 @@ spec:
           argocd.argoproj.io/secret-type: repo-creds
       data:
         type: git
-        url: "ssh://forgejo@forge.ops.eblu.me:2222/eblume/"
-        insecure: "true"
+        url: "ssh://forgejo@forge.ops.eblu.me:2222/"
+        insecure: "false"
         sshPrivateKey: "{{ .privateKey }}"
+        sshKnownHosts: "[forge.ops.eblu.me]:2222 ssh-rsa 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"
   data:
   - secretKey: privateKey
     remoteRef:

argocd/manifests/immich/values.yaml

@@ -16,7 +16,7 @@ controllers:
     containers:
       main:
         image:
-          tag: v2.5.2
+          tag: v2.5.6
         env:
           DB_HOSTNAME: "immich-pg-rw.databases.svc.cluster.local"
           DB_PORT: "5432"