chore: use new model runner syntax

samples/crewai/compose.local.yaml

@@ -36,19 +36,11 @@ services:
       DATABASE_URL: postgres://postgres:password@postgres:5432/postgres
       DJANGO_SECRET_KEY: 5k6qi_gzy65bz2soxl6k(rsrw)0z3ws!zmjzsbe+wkp1ovfayg
 
+models:
   chat:
-    provider:
-      type: model
-      options:
-        model: ai/gemma3:1B-Q4_K_M
-    x-defang-llm: true
-
+    model: ai/gemma3:1B-Q4_K_M
   embedding:
-    provider:
-      type: model
-      options:
-        model: ai/mxbai-embed-large
-    x-defang-llm: true
+    model: ai/mxbai-embed-large
 
 volumes:
   pgdata:

samples/crewai/compose.yaml

@@ -65,42 +65,27 @@ services:
     depends_on:
       - postgres
       - redis
-      - chat
-      - embedding
     environment:
       DJANGO_SETTINGS_MODULE: config.settings
       DATABASE_URL: postgres://postgres:${POSTGRES_PASSWORD}@postgres:5432/postgres?sslmode=require # remove sslmode for Playground
       REDIS_URL: redis://redis:6379/0
       OPENAI_API_KEY: defang
       DJANGO_SECRET_KEY: null
+    models:
+      chat:
+        endpoint_var: CHAT_URL
+        model_var: CHAT_MODEL
+      embedding:
+        endpoint_var: EMBEDDING_URL
+        model_var: EMBEDDING_MODEL
     deploy:
       resources:
         reservations:
           cpus: "0.5"
           memory: 512M
+
+models:
   chat:
-    provider:
-      type: model
-      options:
-        model: chat-default
-    x-defang-llm: true
-    environment:
-      OPENAI_API_KEY: defang
-    deploy:
-      resources:
-        reservations:
-          cpus: "0.5"
-          memory: 512M
+    model: chat-default
   embedding:
-    provider:
-      type: model
-      options:
-        model: embedding-default
-    x-defang-llm: true
-    environment:
-      OPENAI_API_KEY: defang
-    deploy:
-      resources:
-        reservations:
-          cpus: "0.5"
-          memory: 512M
+    model: embedding-default