feat(gitcommit): add remote, fetch, pull support

.styluaignore

@@ -0,0 +1,2 @@
+# Dependencies
+deps/

AGENTS.md

@@ -241,15 +241,23 @@ Same pattern as read operations, but in `git_edit.lua`. Remember:
 
 ## Testing & Development
 
-### Running Style Checks
+### Available Mise Tasks
 ```bash
-stylua --check .    # Check formatting (used in CI)
-stylua .            # Auto-fix formatting
+mise run deps       # Install test dependencies (mini.nvim)
+mise run test       # Run all unit tests
+mise run test:file file=tests/test_validation.lua  # Run specific test file
+mise run lint       # Check code formatting with stylua
+mise run fmt        # Format code with stylua
+mise run doc        # Download latest CodeCompanion documentation
 ```
 
-### Available Make Commands
+### Running Style Checks
 ```bash
-make doc            # Download latest CodeCompanion documentation
+stylua --check .    # Check formatting (used in CI)
+stylua .            # Auto-fix formatting
+# Or via mise:
+mise run lint       # Check formatting
+mise run fmt        # Auto-fix formatting
 ```
 
 ### Development Setup

README.md

@@ -16,6 +16,7 @@ A Neovim plugin extension for CodeCompanion that generates AI-powered Git commit
 - 📚 **Commit History Context** - Use recent commit history to maintain consistent styling and patterns
 - 🔌 **Programmatic API** - Full API for external integrations and custom workflows
 - ⚡ **Async Operations** - Non-blocking Git operations with proper error handling
+- 🛡️ **Config Validation** - Automatic validation of configuration options with helpful error messages
 
 ## 📦 Installation
 
@@ -278,6 +279,56 @@ The AI will analyze your commits to:
 - **Repository validation** ensures operations in valid Git repositories
 - **Comprehensive error handling** with helpful error messages
 
+## 🛡️ Configuration Validation
+
+The extension automatically validates your configuration options at startup and provides helpful feedback:
+
+### Validation Types
+
+| Type | Behavior |
+|------|----------|
+| **Type errors** | Warns when a config option has the wrong type (e.g., string instead of boolean) |
+| **Unknown options** | Warns about typos or unsupported configuration options |
+| **Nested validation** | Validates nested options like `buffer.enabled`, `buffer.keymap`, etc. |
+
+### Example Output
+
+If you have configuration errors, you'll see helpful messages:
+
+```
+[codecompanion-gitcommit] config.adapter: expected string (optional), got number
+[codecompanion-gitcommit] config.languges: unknown configuration option
+[codecompanion-gitcommit] config.buffer.enabled: expected boolean (optional), got string
+```
+
+### Validation Behavior
+
+- **Non-blocking**: Invalid config produces warnings but doesn't prevent the extension from loading
+- **Helpful messages**: Each message includes the field path and expected type
+- **Typo detection**: Unknown fields are flagged as warnings to help catch typos
+
+### Programmatic Validation
+
+You can also validate configuration programmatically:
+
+```lua
+local ConfigValidation = require("codecompanion._extensions.gitcommit.config_validation")
+
+-- Validate custom options
+local result = ConfigValidation.validate({
+  adapter = "openai",
+  buffer = { enabled = true },
+})
+
+if result.valid then
+  print("Config is valid!")
+else
+  for _, issue in ipairs(result.issues) do
+    print(issue.field .. ": " .. issue.message)
+  end
+end
+```
+
 ## 📄 License
 
 MIT License

README_zh.md

@@ -16,6 +16,7 @@
 - 📚 **提交历史上下文** - 使用最近的提交历史来保持一致的风格和模式
 - 🔌 **编程 API** - 为外部集成和自定义工作流提供完整的 API
 - ⚡ **异步操作** - 非阻塞的 Git 操作，具有适当的错误处理
+- 🛡️ **配置验证** - 自动验证配置选项，并提供有用的错误信息
 
 ## 📦 安装
 
@@ -278,6 +279,56 @@ AI 将分析你的提交以：
 - **仓库验证**确保操作在有效的 Git 仓库中进行
 - **全面的错误处理**提供有用的错误信息
 
+## 🛡️ 配置验证
+
+扩展会在启动时自动验证配置选项，并提供有用的反馈：
+
+### 验证类型
+
+| 类型 | 行为 |
+|------|----------|
+| **类型错误** | 当配置选项类型错误时警告（例如，应为布尔值却传了字符串） |
+| **未知选项** | 警告拼写错误或不支持的配置选项 |
+| **嵌套验证** | 验证嵌套选项如 `buffer.enabled`、`buffer.keymap` 等 |
+
+### 输出示例
+
+如果配置有错误，你会看到有用的提示信息：
+
+```
+[codecompanion-gitcommit] config.adapter: expected string (optional), got number
+[codecompanion-gitcommit] config.languges: unknown configuration option
+[codecompanion-gitcommit] config.buffer.enabled: expected boolean (optional), got string
+```
+
+### 验证行为
+
+- **非阻塞**：无效配置会产生警告，但不会阻止扩展加载
+- **有用的信息**：每条信息包含字段路径和预期类型
+- **拼写检测**：未知字段会被标记为警告，帮助发现拼写错误
+
+### 编程式验证
+
+你也可以通过编程方式验证配置：
+
+```lua
+local ConfigValidation = require("codecompanion._extensions.gitcommit.config_validation")
+
+-- 验证自定义选项
+local result = ConfigValidation.validate({
+  adapter = "openai",
+  buffer = { enabled = true },
+})
+
+if result.valid then
+  print("配置有效！")
+else
+  for _, issue in ipairs(result.issues) do
+    print(issue.field .. ": " .. issue.message)
+  end
+end
+```
+
 ## 📄 许可证
 
 MIT 许可证