feat(deploy): 添加 logback.xml（INFO 级，60 MB 滚动）

src/main/resources/logback.xml

@@ -0,0 +1,35 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration scan="true" scanPeriod="60 seconds">
+
+  <property name="LOG_PATH" value="${LOG_PATH:-logs}"/>
+  <property name="APP_NAME" value="label-backend"/>
+  <property name="LOG_PATTERN"
+            value="%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n"/>
+
+  <!-- 控制台输出（Docker 日志采集依赖 stdout） -->
+  <appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
+    <encoder charset="UTF-8">
+      <pattern>${LOG_PATTERN}</pattern>
+    </encoder>
+  </appender>
+
+  <!-- 滚动文件：60 MB / 个，按日分组，保留 30 天，总上限 3 GB -->
+  <appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
+    <file>${LOG_PATH}/${APP_NAME}.log</file>
+    <encoder charset="UTF-8">
+      <pattern>${LOG_PATTERN}</pattern>
+    </encoder>
+    <rollingPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedRollingPolicy">
+      <fileNamePattern>${LOG_PATH}/${APP_NAME}.%d{yyyy-MM-dd}.%i.log</fileNamePattern>
+      <maxFileSize>60MB</maxFileSize>
+      <maxHistory>30</maxHistory>
+      <totalSizeCap>3GB</totalSizeCap>
+    </rollingPolicy>
+  </appender>
+
+  <root level="INFO">
+    <appender-ref ref="CONSOLE"/>
+    <appender-ref ref="FILE"/>
+  </root>
+
+</configuration>