fix: resolve module structure issues by separating CLI and git modules

- Removed duplicated git module code from cli.rs
- Created dedicated git.rs module with GitRepo, StagedChanges, ChangedFile, FileStatus definitions
- Updated all modules (analyzer, generator, prompt) to import from super::git
- Fixed module organization to resolve compilation errors

src/generator.rs

@@ -1,7 +1,7 @@
-use super::analyzer::{AnalysisResult, CommitType};
-use super::git::StagedChanges;
+use crate::analyzer::{AnalysisResult, CommitType};
+use crate::git::StagedChanges;
 
-pub fn generate_message(analysis: &AnalysisResult, _staged: &StagedChanges) -> String {
+pub fn generate_message(analysis: &AnalysisResult, staged: &StagedChanges) -> String {
     let scope = analysis.scope.clone().unwrap_or_default();
     let description = &analysis.description;
 
@@ -14,7 +14,7 @@ pub fn generate_message(analysis: &AnalysisResult, _staged: &StagedChanges) -> S
 
 pub fn generate_alternative_messages(
     analysis: &AnalysisResult,
-    _staged: &StagedChanges,
+    staged: &StagedChanges,
 ) -> Vec<String> {
     let mut messages = Vec::new();
 
@@ -25,12 +25,12 @@ pub fn generate_alternative_messages(
 
     if !scope.is_empty() {
         for verb in &verb_alternatives {
-            let desc = format!("{} {}", verb, base_description);
+            let desc = verb_alternatives_description(verb, &analysis.description, &staged.files);
             messages.push(format!("{} ({}): {}", analysis.commit_type, scope, desc));
         }
     } else {
         for verb in &verb_alternatives {
-            let desc = format!("{} {}", verb, base_description);
+            let desc = verb_alternatives_description(verb, &analysis.description, &staged.files);
             messages.push(format!("{}: {}", analysis.commit_type, desc));
         }
     }
@@ -38,6 +38,25 @@ pub fn generate_alternative_messages(
     messages
 }
 
+fn verb_alternatives_description(
+    verb: &str,
+    base: &str,
+    files: &[crate::git::ChangedFile],
+) -> String {
+    let file_count = files.len();
+
+    if file_count <= 3 && !files.is_empty() {
+        let file_names: Vec<String> = files
+            .iter()
+            .map(|f| f.path.split('/').last().unwrap_or(&f.path).to_string())
+            .collect();
+        let file_list = file_names.join(", ");
+        format!("{} {}", verb, file_list)
+    } else {
+        format!("{} {} files", verb, file_count)
+    }
+}
+
 pub fn format_message(message: &str) -> String {
     if message.len() <= 72 {
         return message.to_string();
@@ -69,8 +88,8 @@ pub fn format_message(message: &str) -> String {
 #[cfg(test)]
 mod tests {
     use super::*;
-    use super::super::analyzer::AnalysisResult;
-    use super::super::git::{ChangedFile, FileStatus, StagedChanges};
+    use crate::analyzer::{AnalysisResult, CommitType};
+    use crate::git::{ChangedFile, FileStatus, StagedChanges};
 
     #[test]
     fn test_message_format_with_scope() {
@@ -106,6 +125,32 @@ mod tests {
         assert_eq!(message, "fix: resolve null pointer exception");
     }
 
+    #[test]
+    fn test_scope_extraction() {
+        let analysis = AnalysisResult {
+            commit_type: CommitType::Test,
+            scope: Some(String::from("api")),
+            confidence: 0.9,
+            description: String::from("add API endpoint tests"),
+            reasons: vec![],
+        };
+        let staged = StagedChanges {
+            files: vec![ChangedFile {
+                path: String::from("api/users_test.rs"),
+                status: FileStatus::Added,
+                additions: 50,
+                deletions: 0,
+                is_new: true,
+                is_deleted: false,
+                is_renamed: false,
+                old_path: None,
+            }],
+            diff_text: String::new(),
+        };
+        let message = generate_message(&analysis, &staged);
+        assert_eq!(message, "test(api): add API endpoint tests");
+    }
+
     #[test]
     fn test_format_message_short() {
         let message = format_message("feat: add new feature");