feat(iam): wire all 9 consumer manifests to Zitadel OIDC

- Replace Authentik issuer/auth/token/userinfo URLs with Zitadel endpoints
  in grafana, minio, paperless-ai, paperless-ai-new, homarr, argocd, blackbox
- Write Zitadel client IDs/secrets into plain manifests and SOPS secrets
  (grafana, minio, paperless, homarr)
- Adopt homarr-oidc into SOPS (homarr-auth-oidc.enc.yaml)
- Add homarr to SECRET_MAP and remove from MANUAL_ONLY in zitadel-provision.py
- Make client-id regex idempotent for repeated runs (minio, paperless)
- Fix cloudflared init container CA mount path (homelab-ca.crt -> ca.crt)
- Remove Authentik ingress and cloudflared tunnel entry

k8s/argocd/secrets/grafana-oidc-secrets.enc.yaml

@@ -5,7 +5,7 @@ metadata:
     namespace: ENC[AES256_GCM,data:ZHnVZyd3wA==,iv:3evUnFTQfRz/ZilUQIl/9dsCba3nsX6o/iQsGXMBfgM=,tag:+9kp+VRu1ksroDTbTGmGPA==,type:str]
 type: ENC[AES256_GCM,data:bHX+Bu9o,iv:8qqNddsuw4YoHAuJfUcPIqjcqNySIh5Ln8OhsfZxuk8=,tag:P7QGUXo9Io2Y19YqlWv5sQ==,type:str]
 stringData:
-    GF_AUTH_GENERIC_OAUTH_CLIENT_SECRET: ENC[AES256_GCM,data:qW2SQSsGD0YupU2SMzRaYwkLRjXAwV1OJBnhATpCJrOHWbEytw6IphOmPPd3VZKfHncekA4agXi4K3rUPHIx0Q==,iv:NCeW/UfIl0RvHV39ubN2mDfFp7GTQNuFv8KiEF+7KOE=,tag:lisx4h4PqUfLwBX8ca9Siw==,type:str]
+    GF_AUTH_GENERIC_OAUTH_CLIENT_SECRET: ENC[AES256_GCM,data:nJz9pqa6w9ZGOjanZ32D38Bolg2YrdHs1crhb2uZkKyaaKDpklVb4FOKZ46K+NS1NXjoS6XDUAlV69CSvm1PeA==,iv:g9F/iLuzNC0WogtDJ/TAb3+97N6iGkbOTlb4SzYzwx8=,tag:4F3kUheGbtW2U6jgOvRO1A==,type:str]
 sops:
     age:
         - enc: |
@@ -17,7 +17,7 @@ sops:
             LS0cIDUhjPFbeu7qUATOrat6vMUi0UREbXSFZ1KyAjNAwJZaUusPMA==
             -----END AGE ENCRYPTED FILE-----
           recipient: age1e5fq3hwxy78psus2nfvmtmua36g0u3suk78ephw6246l974d2utsvn0hla
-    lastmodified: "2026-08-12T18:02:01Z"
-    mac: ENC[AES256_GCM,data:yUBBV7dLEPld9yJacn+YaOT8M1NJ2ploGIxV66aVOH5x4tDAsskcUQJlzApWCQmORuCuMKg6qfpGgLTojfD5msha+ufVVJXHl7ua+STar1/FPJXaHm+z7YyZdsD5j6f3AH8q18DuLy2DYLjXELmPBsp50g7MDJEm3xLhCUXygjQ=,iv:xl0OtA/2umz0YH5b+6QjlAByZWbvfGOmHqomziNjlkw=,tag:xwkQDZx19Lf6QSwU2zPYTQ==,type:str]
+    lastmodified: "2026-10-26T04:03:16Z"
+    mac: ENC[AES256_GCM,data:0cgVNtFMwhbEHBxu7T1XfstcQlgUTxijq9Mz36zC60E7kYXRNwGt2/0KoCaqaE0leypwAdrPn2OjeoDPeCN6x+n0vLRVX2tnli6HazBLbRsPHljDAV0ASF07iNhb0PvgtWay432Mm+sGATkel3ITdAaP0lISNLUYfEe1/TbYHkk=,iv:FZ9Bgtk7LOC3aOSOo1+50zwLGhlcUZYJaUQ9r05cAn0=,tag:tsLQ1frZ7li5l717CCtgoQ==,type:str]
     unencrypted_suffix: _unencrypted
     version: 3.13.2