Initial commit: five Maven reactors and docs only

Track maven-cloudwalk-cloud, maven-cw-elevator-application,
maven-intelligent-cwoscomponent, maven-ninca-crk, maven-ninca-qk-alarm,
and docs/. Other workspace paths ignored via .gitignore.

Made-with: Cursor

.gitignore

@@ -0,0 +1,23 @@
+# 仅跟踪：docs/ 与五个 maven-* 聚合工程；其余根目录内容不纳入版本库。
+/*
+!.gitignore
+!/docs/
+!/docs/**
+!/maven-cloudwalk-cloud/
+!/maven-cloudwalk-cloud/**
+!/maven-cw-elevator-application/
+!/maven-cw-elevator-application/**
+!/maven-intelligent-cwoscomponent/
+!/maven-intelligent-cwoscomponent/**
+!/maven-ninca-crk/
+!/maven-ninca-crk/**
+!/maven-ninca-qk-alarm/
+!/maven-ninca-qk-alarm/**
+
+# 已跟踪目录内的常见构建/IDE 产物（仍保留源码与 pom）
+**/target/
+**/.idea/
+**/*.iml
+**/.classpath
+**/.project
+**/.settings/