Revert "first commit"

This reverts commit ebf30399fb.

src/main/java/com/codechecker/api/scanner/ApiFileChangeScanner.java

@@ -1,56 +0,0 @@
-package com.codechecker.api.scanner;
-
-import com.codechecker.git.GitChangeScanner;
-
-import java.io.IOException;
-import java.nio.file.Path;
-import java.util.ArrayList;
-import java.util.LinkedHashSet;
-import java.util.List;
-import java.util.Set;
-
-/**
- * 扫描 API 相关 Java 文件变更（Controller / Feign），与类变更扫描解耦。
- */
-public class ApiFileChangeScanner {
-    private final GitChangeScanner gitScanner;
-
-    public ApiFileChangeScanner(GitChangeScanner gitScanner) {
-        this.gitScanner = gitScanner;
-    }
-
-    /** 返回两次提交间变更的 .java 相对路径（位于 scanDirs 下） */
-    public List<String> scanChangedFiles(Path repoRoot, List<String> scanDirs,
-                                         String oldSha, String newSha) throws IOException {
-        Set<String> changed = new LinkedHashSet<>();
-        List<String> diffLines = gitScanner.diffNameOnly(oldSha, newSha);
-        for (String line : diffLines) {
-            String path = normalize(line);
-            if (!path.endsWith(".java")) {
-                continue;
-            }
-            if (isUnderScanDirs(path, scanDirs)) {
-                changed.add(path);
-            }
-        }
-        return new ArrayList<>(changed);
-    }
-
-    private boolean isUnderScanDirs(String relativePath, List<String> scanDirs) {
-        String normalized = relativePath.replace('\\', '/');
-        for (String dir : scanDirs) {
-            String prefix = dir.replace('\\', '/');
-            if (!prefix.endsWith("/")) {
-                prefix = prefix + "/";
-            }
-            if (normalized.startsWith(prefix)) {
-                return true;
-            }
-        }
-        return false;
-    }
-
-    private String normalize(String path) {
-        return path.replace('\\', '/').trim();
-    }
-}