refactor(coolify): externalize postgres, qdrant, S3

- Replace bp-core-postgres with POSTGRES_HOST env var
- Replace bp-core-qdrant with QDRANT_URL env var
- Replace bp-core-minio with S3_ENDPOINT/S3_ACCESS_KEY/S3_SECRET_KEY

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.env.coolify.example

@@ -5,7 +5,9 @@
 # for the breakpilot-lehrer Docker Compose resource.
 # =========================================================
 
-# --- Database (shared with Core) ---
+# --- External PostgreSQL (Coolify-managed, same as Core) ---
+POSTGRES_HOST=<coolify-postgres-hostname>
+POSTGRES_PORT=5432
 POSTGRES_USER=breakpilot
 POSTGRES_PASSWORD=CHANGE_ME_SAME_AS_CORE
 POSTGRES_DB=breakpilot_db
@@ -13,10 +15,15 @@ POSTGRES_DB=breakpilot_db
 # --- Security ---
 JWT_SECRET=CHANGE_ME_SAME_AS_CORE
 
-# --- MinIO (from Core) ---
+# --- External S3 Storage (same as Core) ---
-MINIO_ROOT_USER=breakpilot
+S3_ENDPOINT=<s3-endpoint-host:port>
-MINIO_ROOT_PASSWORD=CHANGE_ME_SAME_AS_CORE
+S3_ACCESS_KEY=CHANGE_ME_SAME_AS_CORE
-MINIO_BUCKET=breakpilot-rag
+S3_SECRET_KEY=CHANGE_ME_SAME_AS_CORE
+S3_BUCKET=breakpilot-rag
+S3_SECURE=true
+
+# --- External Qdrant (Coolify-managed, same as Core) ---
+QDRANT_URL=http://<coolify-qdrant-hostname>:6333
 
 # --- Session ---
 SESSION_TTL_HOURS=24

docker-compose.coolify.yml

@@ -3,6 +3,8 @@
 # =========================================================
 # Requires: breakpilot-core must be running
 # Deployed via Coolify. SSL termination handled by Traefik.
+# External services (managed separately in Coolify):
+#   - PostgreSQL, Qdrant, S3-compatible storage
 # =========================================================
 
 networks:
@@ -132,7 +134,7 @@ services:
       - lehrer_backend_data:/app/data
     environment:
       PORT: 8001
-      DATABASE_URL: postgresql+asyncpg://${POSTGRES_USER}:${POSTGRES_PASSWORD}@bp-core-postgres:5432/${POSTGRES_DB}?options=-csearch_path%3Dlehrer,core,public
+      DATABASE_URL: postgresql+asyncpg://${POSTGRES_USER}:${POSTGRES_PASSWORD}@${POSTGRES_HOST}:${POSTGRES_PORT:-5432}/${POSTGRES_DB}?options=-csearch_path%3Dlehrer,core,public
       JWT_SECRET: ${JWT_SECRET}
       ENVIRONMENT: production
       CONSENT_SERVICE_URL: http://bp-core-consent-service:8081
@@ -195,14 +197,14 @@ services:
       BACKEND_URL: http://backend-lehrer:8001
       SCHOOL_SERVICE_URL: http://school-service:8084
       ENVIRONMENT: production
-      DATABASE_URL: postgresql://${POSTGRES_USER}:${POSTGRES_PASSWORD}@bp-core-postgres:5432/${POSTGRES_DB}
+      DATABASE_URL: postgresql://${POSTGRES_USER}:${POSTGRES_PASSWORD}@${POSTGRES_HOST}:${POSTGRES_PORT:-5432}/${POSTGRES_DB}
       EMBEDDING_SERVICE_URL: http://bp-core-embedding-service:8087
-      QDRANT_URL: http://bp-core-qdrant:6333
+      QDRANT_URL: ${QDRANT_URL}
-      MINIO_ENDPOINT: bp-core-minio:9000
+      MINIO_ENDPOINT: ${S3_ENDPOINT}
-      MINIO_ACCESS_KEY: ${MINIO_ROOT_USER}
+      MINIO_ACCESS_KEY: ${S3_ACCESS_KEY}
-      MINIO_SECRET_KEY: ${MINIO_ROOT_PASSWORD}
+      MINIO_SECRET_KEY: ${S3_SECRET_KEY}
-      MINIO_BUCKET: ${MINIO_BUCKET:-breakpilot-rag}
+      MINIO_BUCKET: ${S3_BUCKET:-breakpilot-rag}
-      MINIO_SECURE: "false"
+      MINIO_SECURE: ${S3_SECURE:-true}
       PADDLEOCR_SERVICE_URL: ${PADDLEOCR_SERVICE_URL:-}
       ANTHROPIC_API_KEY: ${ANTHROPIC_API_KEY:-}
       OLLAMA_BASE_URL: ${OLLAMA_BASE_URL:-}
@@ -239,7 +241,7 @@ services:
     expose:
       - "8084"
     environment:
-      DATABASE_URL: postgresql://${POSTGRES_USER}:${POSTGRES_PASSWORD}@bp-core-postgres:5432/${POSTGRES_DB}
+      DATABASE_URL: postgresql://${POSTGRES_USER}:${POSTGRES_PASSWORD}@${POSTGRES_HOST}:${POSTGRES_PORT:-5432}/${POSTGRES_DB}
       JWT_SECRET: ${JWT_SECRET}
       PORT: 8084
       ENVIRONMENT: production
@@ -300,8 +302,8 @@ services:
       RATE_LIMIT_PER_SEC: "0.2"
       MAX_DEPTH: "4"
       MAX_PAGES_PER_RUN: "500"
-      DB_HOST: bp-core-postgres
+      DB_HOST: ${POSTGRES_HOST}
-      DB_PORT: "5432"
+      DB_PORT: ${POSTGRES_PORT:-5432}
       DB_USER: ${POSTGRES_USER}
       DB_PASSWORD: ${POSTGRES_PASSWORD}
       DB_NAME: ${POSTGRES_DB}