wip: baseline changes before channel-conversation-task boundary implementation

.env.example

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+# MySQL
+MYSQL_ROOT_PASSWORD=root
+MYSQL_DATABASE=sino_mci
+MYSQL_USER=root
+MYSQL_PORT=3306
+
+# Redis
+REDIS_PORT=6379
+
+# RabbitMQ
+RABBITMQ_DEFAULT_USER=guest
+RABBITMQ_DEFAULT_PASS=guest
+RABBITMQ_AMQP_PORT=5672
+RABBITMQ_MGMT_PORT=15672
+
+# SeaweedFS
+SEAWEEDFS_MASTER_PORT=9333
+SEAWEEDFS_S3_PORT=8888
+
+# Application ports
+MCI_SERVER_PORT=8080
+ADMIN_WEB_PORT=80
+CHANNEL_SERVICE_PORT=8000
+
+# JVM options for mci-server
+JAVA_OPTS=-XX:+UseContainerSupport -XX:MaxRAMPercentage=75.0
+
+# Spring profile
+SPRING_PROFILES_ACTIVE=dev
+
+# OpenAI API key (optional)
+OPENAI_API_KEY=your-openai-api-key-here