feat(core): 添加SVN日志查询工具和DeepSeek AI处理功能

- 实现SVN日志查询工具，支持版本范围和用户过滤
- 添加DeepSeek API集成，用于AI分析日志内容
- 创建Excel生成器，输出工作量统计报表
- 添加日志实体类和项目配置管理功能
- 集成POI库支持Excel文件操作
- 实现Markdown格式日志导出功能

src/main/java/com/svnlog/SVNLogFetcher.java

@@ -0,0 +1,98 @@
+package com.svnlog;
+
+import org.tmatesoft.svn.core.*;
+import org.tmatesoft.svn.core.auth.ISVNAuthenticationManager;
+import org.tmatesoft.svn.core.internal.io.svn.SVNRepositoryFactoryImpl;
+import org.tmatesoft.svn.core.io.SVNRepository;
+import org.tmatesoft.svn.core.io.SVNRepositoryFactory;
+import org.tmatesoft.svn.core.wc.SVNWCUtil;
+
+import java.text.SimpleDateFormat;
+import java.util.*;
+
+public class SVNLogFetcher {
+    private String url;
+    private String username;
+    private String password;
+    private SVNRepository repository;
+    private SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
+
+    public SVNLogFetcher(String url, String username, String password) throws SVNException {
+        this.url = url;
+        this.username = username;
+        this.password = password;
+
+        SVNRepositoryFactoryImpl.setup();
+        this.repository = SVNRepositoryFactory.create(SVNURL.parseURIEncoded(url));
+
+        ISVNAuthenticationManager authManager = SVNWCUtil.createDefaultAuthenticationManager(username, password.toCharArray());
+        repository.setAuthenticationManager(authManager);
+    }
+
+    public List<LogEntry> fetchLogs(long startRevision, long endRevision) throws SVNException {
+        return fetchLogs(startRevision, endRevision, null);
+    }
+
+    public List<LogEntry> fetchLogs(long startRevision, long endRevision, String filterUser) throws SVNException {
+        List<LogEntry> entries = new ArrayList<>();
+
+        if (startRevision < 0) {
+            startRevision = repository.getLatestRevision();
+        }
+
+        if (endRevision < 0) {
+            endRevision = repository.getLatestRevision();
+        }
+
+        if (startRevision > endRevision) {
+            long temp = startRevision;
+            startRevision = endRevision;
+            endRevision = temp;
+        }
+
+        Collection<SVNLogEntry> logEntries = repository.log(new String[]{""}, null, startRevision, endRevision, true, true);
+
+        for (SVNLogEntry logEntry : logEntries) {
+            String author = logEntry.getAuthor();
+
+            // 如果设置了用户名过滤器，则跳过不匹配的记录（包含匹配，不区分大小写）
+            if (filterUser != null && !filterUser.isEmpty() && (author == null || !author.toLowerCase().contains(filterUser.toLowerCase()))) {
+                continue;
+            }
+
+            LogEntry entry = new LogEntry();
+            entry.setRevision(logEntry.getRevision());
+            entry.setAuthor(author != null ? author : "(无作者)");
+            entry.setDate(logEntry.getDate());
+            entry.setMessage(logEntry.getMessage() != null ? logEntry.getMessage().trim() : "");
+
+            // 获取变更的文件路径
+            if (logEntry.getChangedPaths() != null) {
+                List<String> paths = new ArrayList<>();
+                for (Map.Entry<String, SVNLogEntryPath> pathEntry : logEntry.getChangedPaths().entrySet()) {
+                    paths.add(pathEntry.getKey());
+                }
+                entry.setChangedPaths(paths.toArray(new String[0]));
+            }
+
+            entries.add(entry);
+        }
+
+        // 按版本号降序排序
+        entries.sort((e1, e2) -> Long.compare(e2.getRevision(), e1.getRevision()));
+
+        return entries;
+    }
+
+    public long getLatestRevision() throws SVNException {
+        return repository.getLatestRevision();
+    }
+
+    public String formatDate(Date date) {
+        return dateFormat.format(date);
+    }
+
+    public void testConnection() throws SVNException {
+        repository.testConnection();
+    }
+}