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>

docker-compose.dev.yml

@@ -1,11 +1,11 @@
 # Development overrides: exposes ports for direct access
 # Usage: docker compose -f docker-compose.yml -f docker-compose.dev.yml up
 services:
-  postgres:
+  cameleer-postgres:
     ports:
       - "5432:5432"
 
-  logto:
+  cameleer-logto:
     ports:
       - "3001:3001"
 
@@ -31,6 +31,6 @@ services:
       CAMELEER_SAAS_PROVISIONING_NETWORKNAME: cameleer-saas_cameleer
       CAMELEER_SAAS_PROVISIONING_TRAEFIKNETWORK: cameleer-traefik
 
-  clickhouse:
+  cameleer-clickhouse:
     ports:
       - "8123:8123"