feat: create mpp-vscode extension based on Kotlin Multiplatform

[phodal]

Overview

Create a new VSCode extension (mpp-vscode) that leverages Kotlin Multiplatform (KMP) technology, reusing the core capabilities from mpp-core.

Architecture

The extension will follow a lightweight architecture inspired by:

• autodev-vscode - Full-featured AutoDev VSCode implementation
• gemini-cli/vscode-ide-companion - Minimal MCP bridge pattern
• mpp-ui - Existing CLI tool showing mpp-core integration

TODO List

Phase 1: Project Infrastructure ✅

• Create project directory structure
• Create package.json (VSCode extension config)
• Create tsconfig.json
• Configure esbuild bundling

Phase 2: Core Services

• Implement mpp-core bridge (src/bridge/mpp-core.ts)
  • Import @autodev/mpp-core
  • Wrap JsKoogLLMService
  • Wrap JsCodingAgent
  • Wrap JsToolRegistry
  • Wrap JsCompletionManager
• Implement extension.ts entry point

Phase 3: IDE Integration

• Implement IDE Server (MCP protocol)
  • Express HTTP server
  • MCP tool registration (openDiff, closeDiff)
  • Session management
• Implement Diff Manager
  • showDiff(), acceptDiff(), cancelDiff()
  • Diff Content Provider

Phase 4: Chat Interface

• Implement Chat Webview Provider
• Create Webview UI (React)

Phase 5: Commands and Features

• Register VSCode commands
• Keybinding configuration
• Status bar integration

Phase 6: Advanced Features

• DevIns language support
• Code indexing integration
• Domain dictionary support

Tech Stack

• TypeScript - Primary language
• mpp-core (Kotlin/JS) - Core LLM and Agent capabilities
• React - Webview UI
• Express - MCP server
• esbuild - Bundler