feat: add hourly rolling logs

backend/scripts/extract_logs.sh

@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+# Extract gzipped logs from the last three days into a target directory.
+# Usage: ./extract_logs.sh [output_dir]
+set -e
+SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
+LOG_DIR="${SCRIPT_DIR}/../logs"
+OUTPUT_DIR="${1:-${SCRIPT_DIR}/extracted}"
+
+mkdir -p "$OUTPUT_DIR"
+find "$LOG_DIR" -name 'application-*.log.gz' -mtime -3 -print \
+  -exec sh -c 'gzip -dc "$1" > "$2/$(basename "$1" .gz)"' _ {} "$OUTPUT_DIR" \;
+echo "Logs extracted to $OUTPUT_DIR"

backend/src/main/resources/logback-spring.xml

@@ -0,0 +1,25 @@
+<configuration>
+    <property name="LOG_PATH" value="logs"/>
+
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{yyyy-MM-dd HH:mm:ss} %-5level %logger{36} - %msg%n</pattern>
+        </encoder>
+    </appender>
+
+    <appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
+        <file>${LOG_PATH}/application.log</file>
+        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
+            <fileNamePattern>${LOG_PATH}/application-%d{yyyy-MM-dd_HH}.log.gz</fileNamePattern>
+            <maxHistory>72</maxHistory>
+        </rollingPolicy>
+        <encoder>
+            <pattern>%d{yyyy-MM-dd HH:mm:ss} %-5level %logger{36} - %msg%n</pattern>
+        </encoder>
+    </appender>
+
+    <root level="${LOG_LEVEL:-INFO}">
+        <appender-ref ref="STDOUT"/>
+        <appender-ref ref="FILE"/>
+    </root>
+</configuration>