feat: Surge TUI - macOS Surge proxy management terminal interface

Complete terminal user interface with Surge proxy management and real-time monitoring.

## Core Features

**Multi-Language Support**
- Compile-time language selection (zh-cn/en-us)
- Zero runtime overhead with Translate trait
- Full UI translation coverage

**Real-Time Monitoring**
- 5 main views: Overview/Policies/Requests/Connections/DNS
- Non-blocking policy latency testing
- Request history and active connections
- DNS cache management

**Search and Grouping**
- Independent search modes (policy groups/requests/connections)
- Group by application name display
- Real-time filtering and highlighting

**Connection Management**
- Terminate individual connections (k key + confirmation)
- Feature toggles (outbound mode/MITM/traffic capture)
- Refresh strategy to avoid status delays

**Enhanced Request Details**
- Notes syntax highlighting (7 types of tags)
- HTTP Body markers
- Connection log display

**Help and Notifications**
- Built-in help popup (h key)
- Smart notification system
- Developer tools (DevTools)

## Architecture Design

**Clean Architecture Layering**
- Domain - Core business logic (zero dependencies)
- Infrastructure - HTTP/CLI/System clients
- Application - Business coordination layer
- UI - Ratatui TUI components

**Fallback Strategy**
- HTTP API → surge-cli → System commands
- Alert mechanism (no automatic config modification)

## Internationalization

**Documentation**
- English as default language
- Chinese version in README.zh-CN.md
- All docs/ and .claude/rules/ in English
- All code comments in English

## Tech Stack

- Rust + Tokio (async)
- Ratatui (terminal UI)
- Reqwest (HTTP client)
- Serde (serialization)

Generated with [Claude Code](https://claude.ai/code)
via [Happy](https://happy.engineering)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: keyp-dev

.claude/rules/README.md

@@ -0,0 +1,46 @@
+# Claude Rules - surge-tui Project Guidelines
+
+These rule documents are automatically loaded into Claude Code's context to guide code generation and modifications.
+
+## Rule Documents
+
+1. **[project-structure.md](project-structure.md)** - Project structure and layering rules
+   - Clean Architecture layering
+   - Dependency direction rules
+   - Guide for adding new features
+
+2. **[i18n.md](i18n.md)** - Internationalization guidelines
+   - Compile-time language selection
+   - Translate trait usage
+   - Adding new language workflow
+
+3. **[code-style.md](code-style.md)** - Code style guidelines
+   - SOLID principles application
+   - Rust best practices
+   - Error handling, comments, testing
+
+4. **[commit-convention.md](commit-convention.md)** - Commit conventions
+   - Conventional Commits format
+   - Type, Scope, Subject rules
+   - Real-world examples
+
+## Auto-loading
+
+These rules are automatically loaded in the following situations:
+
+- **Global loading** - README.md (this file)
+- **By file type** - When editing related files
+  - `.rs` files → code-style.md
+  - `i18n/` directory → i18n.md
+  - Any Rust file → project-structure.md
+  - Git commit → commit-convention.md
+
+See [Claude Code documentation](https://code.claude.com/docs/en/memory#modular-rules-with-claude%2Frules%2F).
+
+## Updating Rules
+
+After modifying rule documents, Claude Code will automatically load the new version in the next session. No restart needed.
+
+---
+
+*"The only way to go fast is to go well."* — Robert C. Martin