Initial commit: reorganized source tree

- backend/: 13 Maven modules (cw-elevator-application, cloudwalk-cloud, intelligent-cwoscomponent, ninca-crk, etc.)
- frontend/: 4 Vue projects (elevator-front, cwos-portal, alarm-front, front_acs) + decompiled + scripts
- scripts/: build, test-env, tools (Docker Compose, service templates, API parity)
- docs/: AGENTS.md, superpowers specs, architecture docs
- .gitignore: standard Java/Maven exclusions

Moved from legacy maven-*/ root layout to backend/ organized structure.

backend/intelligent-davinci-manager/davinci-manager-common/pom.xml

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <parent>
+        <groupId>cn.cloudwalk.intelligent</groupId>
+        <artifactId>cloudwalk-intelligent-davinci-manager</artifactId>
+        <version>1.1.7-SNAPSHOT</version>
+        <relativePath>../pom.xml</relativePath>
+    </parent>
+
+    <artifactId>davinci-manager-common</artifactId>
+    <packaging>jar</packaging>
+    <name>davinci-manager-common</name>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.cloud</groupId>
+            <artifactId>spring-cloud-starter-openfeign</artifactId>
+        </dependency>
+    </dependencies>
+</project>

backend/intelligent-davinci-manager/davinci-manager-common/src/main/java/cn/cloudwalk/intelligent/davinci/common/exception/DavinciServiceException.java

@@ -0,0 +1,21 @@
+package cn.cloudwalk.intelligent.davinci.common.exception;
+
+public class DavinciServiceException extends Exception {
+
+    private static final long serialVersionUID = 1L;
+
+    private String code;
+
+    public DavinciServiceException(String code, String message) {
+        super(message);
+        this.code = code;
+    }
+
+    public String getCode() {
+        return code;
+    }
+
+    public void setCode(String code) {
+        this.code = code;
+    }
+}

backend/intelligent-davinci-manager/davinci-manager-common/src/main/java/cn/cloudwalk/intelligent/davinci/common/result/DavinciResult.java

@@ -0,0 +1,63 @@
+package cn.cloudwalk.intelligent.davinci.common.result;
+
+import java.io.Serializable;
+
+public class DavinciResult<T> implements Serializable {
+
+    private static final long serialVersionUID = 1L;
+
+    private boolean success;
+    private String code;
+    private String message;
+    private T data;
+
+    public boolean isSuccess() {
+        return success;
+    }
+
+    public void setSuccess(boolean success) {
+        this.success = success;
+    }
+
+    public String getCode() {
+        return code;
+    }
+
+    public void setCode(String code) {
+        this.code = code;
+    }
+
+    public String getMessage() {
+        return message;
+    }
+
+    public void setMessage(String message) {
+        this.message = message;
+    }
+
+    public T getData() {
+        return data;
+    }
+
+    public void setData(T data) {
+        this.data = data;
+    }
+
+    /** Feign 降级或本地失败路径使用的结构化失败体（不走异常控制流）。 */
+    public static <T> DavinciResult<T> fail(String code, String message) {
+        DavinciResult<T> r = new DavinciResult<>();
+        r.setSuccess(false);
+        r.setCode(code);
+        r.setMessage(message);
+        return r;
+    }
+
+    public static <T> DavinciResult<T> success(T data) {
+        DavinciResult<T> r = new DavinciResult<>();
+        r.setSuccess(true);
+        r.setCode("0");
+        r.setMessage("ok");
+        r.setData(data);
+        return r;
+    }
+}