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

Rename all Docker Compose service names, DNS hostnames, volumes,
and Traefik labels to use the cameleer- prefix for clear ownership.

Services renamed:
- postgres → cameleer-postgres
- clickhouse → cameleer-clickhouse
- logto → cameleer-logto
- traefik → cameleer-traefik

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

Updated across:
- docker-compose.yml, docker-compose.dev.yml
- installer/cameleer/docker-compose.yml
- installer/install.sh, installer/install.ps1
- application.yml defaults
- DockerTenantProvisioner.java hardcoded URL
- logto-bootstrap.sh defaults
- VendorTenantServiceTest.java
- CLAUDE.md, docs/architecture.md, docs/user-manual.md

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

src/test/java/net/siegeln/cameleer/saas/vendor/VendorTenantServiceTest.java

@@ -73,7 +73,7 @@ class VendorTenantServiceTest {
             "img", "uiimg", "net", "traefik", "localhost", "https",
             "jdbc:postgresql://pg:5432/db", "cameleer", "cameleer_dev",
             "jdbc:clickhouse://ch:8123/cameleer", "default", "cameleer_ch",
-            "https://localhost/oidc", "http://logto:3001/oidc/jwks", "https://localhost");
+            "https://localhost/oidc", "http://cameleer-logto:3001/oidc/jwks", "https://localhost");
         vendorTenantService = new VendorTenantService(
                 tenantService, tenantRepository, licenseService,
                 tenantProvisioner, serverApiClient, logtoClient, logtoConfig,