feat(keycloak): add tenant-context client scope + M7.1 test users

Adds the breakpilot platform multi-tenancy claims to the dev realm
so M7.x products (starting with compliance-scanner-agent) can
authenticate against the local CERTifAI stack end-to-end.

New tenant-context client scope, included by default on all three
clients, with six protocol mappers backed by user attributes:

  tenant_id, tenant_slug, tenant_status, plan (strings)
  org_roles, products (multi-valued)

Five test users cover every tenant_status branch:

  admin@certifai.local  (acme, active, IT_ADMIN + CXO)
  user@certifai.local   (acme, active, USER)
  trial@acme.local      (trialco, trial)
  frozen@acme.local     (frozenco, frozen)   -> 402 on writes
  archived@acme.local   (archiveco, archived) -> 410 always

Enables Direct Access Grants on certifai-dashboard so password-
grant requests work for local API testing. This is the dev realm
only (KC_DB: dev-mem); prod realms inherit nothing from this file.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

docker-compose.yml

@@ -5,11 +5,7 @@ services:
     environment:
       KC_BOOTSTRAP_ADMIN_USERNAME: admin
       KC_BOOTSTRAP_ADMIN_PASSWORD: admin
-      # dev-file persists Keycloak's H2 DB under /opt/keycloak/data/h2/
-      # so the realm + test users survive container restarts. With the
-      # previous dev-mem the realm dissolved every time KC went idle,
-      # breaking local M7.1 smoke testing.
-      KC_DB: dev-file
+      KC_DB: dev-mem
       KC_HEALTH_ENABLED: "true"
     ports:
       - "8080:8080"
@@ -19,7 +15,6 @@ services:
     volumes:
       - ./keycloak/realm-export.json:/opt/keycloak/data/import/realm-export.json:ro
       - ./keycloak/themes/certifai:/opt/keycloak/themes/certifai:ro
-      - keycloak-data:/opt/keycloak/data/h2
     healthcheck:
       test: ["CMD-SHELL", "exec 3<>/dev/tcp/localhost/8080 && echo -e 'GET /realms/master HTTP/1.1\\r\\nHost: localhost\\r\\nConnection: close\\r\\n\\r\\n' >&3 && head -1 <&3 | grep -q '200 OK'"]
       interval: 10s
@@ -261,4 +256,3 @@ volumes:
   langfuse-db-data:
   langfuse-clickhouse-data:
   langfuse-clickhouse-logs:
-  keycloak-data: