fix: tighten internal semantic compose contracts

compose.yaml

@@ -102,6 +102,17 @@ services:
       - "11434"
     volumes:
       - embedding-models:/root/.ollama
+    healthcheck:
+      test:
+        - CMD-SHELL
+        - >
+          /usr/bin/bash -lc "exec 3<>/dev/tcp/127.0.0.1/11434 &&
+          printf 'GET /api/tags HTTP/1.1\r\nHost: 127.0.0.1\r\nConnection: close\r\n\r\n' >&3 &&
+          grep -q '200 OK' <&3"
+      interval: 15s
+      timeout: 5s
+      retries: 20
+      start_period: 10s
     networks:
       - thothii
 
@@ -117,7 +128,7 @@ services:
       - ./docker/embedding-model-init.sh:/opt/thoth/embedding-model-init.sh:ro
     depends_on:
       embedding:
-        condition: service_started
+        condition: service_healthy
     networks:
       - thothii