UI/runtime polish, session rotation limit, login errors, docs update

docker-compose.yml

@@ -30,7 +30,7 @@ services:
   api:
     build:
       context: ./app
-    command: ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "8000", "--workers", "4"]
+    command: ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "8000", "--workers", "6"]
     environment:
       DATABASE_URL: postgresql+psycopg2://${POSTGRES_USER}:${POSTGRES_PASSWORD}@db:5432/${POSTGRES_DB}
       SIGNING_KEY: ${SIGNING_KEY}
@@ -40,6 +40,7 @@ services:
       SESSION_IDLE_SECONDS: ${SESSION_IDLE_SECONDS:-300}
       PREWARM_POOL_SIZE: ${PREWARM_POOL_SIZE:-2}
       UNIVERSAL_POOL_SIZE: ${UNIVERSAL_POOL_SIZE:-0}
+      MAX_ACTIVE_SERVICES_PER_USER: ${MAX_ACTIVE_SERVICES_PER_USER:-4}
       LOG_LEVEL: ${LOG_LEVEL:-INFO}
     depends_on:
       - db