feat: full tenant cleanup on delete — Docker resources, PG schema, CH data (#55)

DockerTenantProvisioner.remove() now cleans up all tenant Docker resources:
containers (by cameleer.tenant label), env networks, tenant network, JAR volume.
TenantDataCleanupService drops the tenant's PostgreSQL schema and deletes all
ClickHouse data for GDPR compliance.

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

src/test/java/net/siegeln/cameleer/saas/portal/TenantPortalServiceTest.java

@@ -47,7 +47,7 @@ class TenantPortalServiceTest {
     private TenantProvisioner tenantProvisioner;
 
     private final ProvisioningProperties provisioningProps = new ProvisioningProperties(
-            null, null, null, null, "test.example.com", "https", null, null, null, null);
+            null, null, null, null, "test.example.com", "https", null, null, null, null, null);
 
     private TenantPortalService tenantPortalService;
 

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

@@ -5,6 +5,7 @@ import net.siegeln.cameleer.saas.identity.LogtoConfig;
 import net.siegeln.cameleer.saas.identity.LogtoManagementClient;
 import net.siegeln.cameleer.saas.identity.ServerApiClient;
 import net.siegeln.cameleer.saas.provisioning.ProvisioningProperties;
+import net.siegeln.cameleer.saas.provisioning.TenantDataCleanupService;
 import net.siegeln.cameleer.saas.license.LicenseEntity;
 import net.siegeln.cameleer.saas.license.LicenseService;
 import net.siegeln.cameleer.saas.provisioning.ProvisionResult;
@@ -61,18 +62,21 @@ class VendorTenantServiceTest {
     @Mock
     private AuditService auditService;
 
+    @Mock
+    private TenantDataCleanupService dataCleanupService;
+
     private VendorTenantService vendorTenantService;
 
     @BeforeEach
     void setUp() {
         var provisioningProps = new ProvisioningProperties(
             "img", "uiimg", "net", "traefik", "localhost", "https",
-            "jdbc:postgresql://pg:5432/db", "https://localhost/oidc",
-            "http://logto:3001/oidc/jwks", "https://localhost");
+            "jdbc:postgresql://pg:5432/db", "jdbc:clickhouse://ch:8123/cameleer",
+            "https://localhost/oidc", "http://logto:3001/oidc/jwks", "https://localhost");
         vendorTenantService = new VendorTenantService(
                 tenantService, tenantRepository, licenseService,
                 tenantProvisioner, serverApiClient, logtoClient, logtoConfig,
-                auditService, provisioningProps);
+                auditService, provisioningProps, dataCleanupService);
     }
 
     // --- Helpers ---