✨ feat(commands)：为所有命令添加config_path参数支持，实现自定义配置文件路径

♻️ refactor(config)：重构ConfigManager，添加with_path_fresh方法用于初始化新配置
🔧 fix(git)：改进跨平台路径处理，增强git仓库检测的鲁棒性
✅ test(tests)：添加全面的集成测试，覆盖所有命令和跨平台场景

src/commands/commit.rs

@@ -2,6 +2,7 @@ use anyhow::{bail, Context, Result};
 use clap::Parser;
 use colored::Colorize;
 use dialoguer::{Confirm, Input, Select};
+use std::path::PathBuf;
 
 use crate::config::{Language, manager::ConfigManager};
 use crate::config::CommitFormat;
@@ -84,12 +85,16 @@ pub struct CommitCommand {
 }
 
 impl CommitCommand {
-    pub async fn execute(&self) -> Result<()> {
+    pub async fn execute(&self, config_path: Option<PathBuf>) -> Result<()> {
         // Find git repository
         let repo = find_repo(std::env::current_dir()?.as_path())?;
         
         // Load configuration
-        let manager = ConfigManager::new()?;
+        let manager = if let Some(ref path) = config_path {
+            ConfigManager::with_path(path)?
+        } else {
+            ConfigManager::new()?
+        };
         let config = manager.config();
         let language = manager.get_language().unwrap_or(Language::English);
         let messages = Messages::new(language);