chore: initial commit of ai site platform

Co-authored-by: Cursor <cursoragent@cursor.com>

platform/docker-compose.yml

@@ -0,0 +1,20 @@
+services:
+  postgres:
+    image: postgres:16-alpine
+    container_name: aijianzhan-pg
+    environment:
+      POSTGRES_USER: platform
+      POSTGRES_PASSWORD: platform
+      POSTGRES_DB: platform
+    ports:
+      - "5432:5432"
+    volumes:
+      - pgdata:/var/lib/postgresql/data
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U platform -d platform"]
+      interval: 3s
+      timeout: 3s
+      retries: 20
+
+volumes:
+  pgdata: