feat(web): 新增可视化工作台并支持预置SVN项目

新增 Spring Boot Web 后端与前端页面，打通 SVN 抓取、AI 分析、任务管理、文件下载与系统设置全流程。增加 3 个默认 SVN 预置项目下拉与默认项配置，提升日常使用效率与可维护性。

src/main/java/com/svnlog/web/model/TaskInfo.java

@@ -0,0 +1,86 @@
+package com.svnlog.web.model;
+
+import java.time.Instant;
+import java.util.ArrayList;
+import java.util.List;
+
+public class TaskInfo {
+
+    private String taskId;
+    private String type;
+    private TaskStatus status;
+    private int progress;
+    private String message;
+    private String error;
+    private Instant createdAt;
+    private Instant updatedAt;
+    private final List<String> files = new ArrayList<String>();
+
+    public String getTaskId() {
+        return taskId;
+    }
+
+    public void setTaskId(String taskId) {
+        this.taskId = taskId;
+    }
+
+    public String getType() {
+        return type;
+    }
+
+    public void setType(String type) {
+        this.type = type;
+    }
+
+    public TaskStatus getStatus() {
+        return status;
+    }
+
+    public void setStatus(TaskStatus status) {
+        this.status = status;
+    }
+
+    public int getProgress() {
+        return progress;
+    }
+
+    public void setProgress(int progress) {
+        this.progress = progress;
+    }
+
+    public String getMessage() {
+        return message;
+    }
+
+    public void setMessage(String message) {
+        this.message = message;
+    }
+
+    public String getError() {
+        return error;
+    }
+
+    public void setError(String error) {
+        this.error = error;
+    }
+
+    public Instant getCreatedAt() {
+        return createdAt;
+    }
+
+    public void setCreatedAt(Instant createdAt) {
+        this.createdAt = createdAt;
+    }
+
+    public Instant getUpdatedAt() {
+        return updatedAt;
+    }
+
+    public void setUpdatedAt(Instant updatedAt) {
+        this.updatedAt = updatedAt;
+    }
+
+    public List<String> getFiles() {
+        return files;
+    }
+}