refactor: prefix all third-party service names with cameleer-

Rename all Docker/K8s service names, DNS hostnames, secrets, volumes,
and manifest files to use the cameleer- prefix, making it clear which
software package each container belongs to.

Services renamed:
- postgres → cameleer-postgres
- clickhouse → cameleer-clickhouse
- logto → cameleer-logto
- logto-postgresql → cameleer-logto-postgresql
- traefik (service) → cameleer-traefik
- postgres-external → cameleer-postgres-external

Secrets renamed:
- postgres-credentials → cameleer-postgres-credentials
- clickhouse-credentials → cameleer-clickhouse-credentials
- logto-credentials → cameleer-logto-credentials

Volumes renamed:
- pgdata → cameleer-pgdata
- chdata → cameleer-chdata
- certs → cameleer-certs
- bootstrapdata → cameleer-bootstrapdata

K8s manifests renamed:
- deploy/postgres.yaml → deploy/cameleer-postgres.yaml
- deploy/clickhouse.yaml → deploy/cameleer-clickhouse.yaml
- deploy/logto.yaml → deploy/cameleer-logto.yaml

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

docs/superpowers/plans/2026-04-05-logto-oidc-resource-server.md

@@ -926,13 +926,13 @@ Logto is deployed alongside the Cameleer stack. After first deployment:
 5. **Configure Cameleer**: Use the admin API (`PUT /api/v1/admin/oidc`) or set env vars for initial seeding:
    ```
    CAMELEER_OIDC_ENABLED=true
-   CAMELEER_OIDC_ISSUER=http://logto:3001/oidc
+   CAMELEER_OIDC_ISSUER=http://cameleer-logto:3001/oidc
    CAMELEER_OIDC_CLIENT_ID=<client-id-from-step-2>
    CAMELEER_OIDC_CLIENT_SECRET=<not-needed-for-public-spa>
    ```
 6. **Configure resource server** (for M2M token validation):
    ```
-   CAMELEER_OIDC_ISSUER_URI=http://logto:3001/oidc
+   CAMELEER_OIDC_ISSUER_URI=http://cameleer-logto:3001/oidc
    CAMELEER_OIDC_AUDIENCE=https://cameleer.siegeln.net/api
    ```
 ```
@@ -948,7 +948,7 @@ Replace:
 
 With:
 ```json
-    "issuerUri": "http://logto:3001/oidc",
+    "issuerUri": "http://cameleer-logto:3001/oidc",
 ```
 
 - [ ] **Step 3: Update HOWTO.md — replace infrastructure diagram**