refactor: 깃 푸시 경로 수정 및 커밋 메세지 수정 (#132)

Author: thezz9

src/main/java/org/ezcode/codetest/application/submission/dto/request/github/GitHubPushRequest.java

@@ -59,4 +59,8 @@ public static GitHubPushRequest of(SubmissionContext ctx, UserGithubInfo info, S
     public String getLanguage() {
         return languageName + " " + languageVersion;
     }
+
+    public String getProblemInfo() {
+        return problemId + ". " + problemTitle;
+    }
 }

src/main/java/org/ezcode/codetest/infrastructure/github/GitHubApiClient.java

@@ -43,7 +43,7 @@ public class GitHubApiClient {
 
     protected Optional<String> fetchSourceBlobSha(GitHubPushRequest req) {
         String fileName = FileType.SOURCE.resolveFilename(req);
-        String path = String.format("%s/%s/%s/%s", repoRootFolder, req.difficulty(), req.problemId(), fileName);
+        String path = String.format("%s/%s/%s/%s", repoRootFolder, req.difficulty(), req.getProblemInfo(), fileName);
 
         return baseBuilder(req.accessToken())
             .get()
@@ -152,10 +152,10 @@ private String fetchBaseTreeSha(GitHubPushRequest req, String commitSha) {
 
     private String createCommit(GitHubPushRequest req, String parentSha, String treeSha) {
         Map<String, Object> body = Map.of(
-            "message", String.format("문제 %s. %s (%s) – 메모리: %sKB, 시간: %sms",
+            "message", String.format("[%s] 문제 %s. %s, 메모리: %sKB, 시간: %sms",
+                req.difficulty(),
                 req.problemId(),
                 req.problemTitle(),
-                req.difficulty(),
                 req.averageMemoryUsage(),
                 req.averageExecutionTime()
             ),

src/main/java/org/ezcode/codetest/infrastructure/github/GitHubContentBuilder.java

@@ -69,7 +69,7 @@ private List<Map<String, Object>> buildGitTreeEntriesFromMap(
             .map(s -> {
                 FileType fileType = FileType.valueOf(s);
                 String path = String.format("%s/%s/%s/%s",
-                    repoRootFolder, req.difficulty(), req.problemId(), fileType.resolveFilename(req)
+                    repoRootFolder, req.difficulty(), req.getProblemInfo(), fileType.resolveFilename(req)
                 );
 
                 String content = fileType == FileType.SOURCE