Initial commit

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

.gitignore

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+# Maven
+target/
+pom.xml.tag
+pom.xml.releaseBackup
+pom.xml.versionsBackup
+pom.xml.next
+release.properties
+dependency-reduced-pom.xml
+buildNumber.properties
+.mvn/timing.properties
+.mvn/wrapper/maven-wrapper.jar
+
+# IDE
+.idea/
+*.iml
+*.ipr
+*.iws
+.project
+.classpath
+.settings/
+.vscode/
+
+# Java
+*.class
+*.jar
+*.war
+*.ear
+*.log
+hs_err_pid*
+
+# H2 / 本地数据库（可选：若需提交空库可去掉 data/）
+data/*.db
+data/*.trace.db
+
+# OS
+.DS_Store
+Thumbs.db
+
+# 环境与密钥（勿提交）
+.env
+*.pem
+*.key