feat: add VS Code extension with terminal launcher and custom theme

Agent-Logs-Url: https://github.com/devNull-bootloader/openclaude/sessions/5c0e9230-42be-4cce-a5d6-e85d665ea72a

Co-authored-by: devNull-bootloader <189463177+devNull-bootloader@users.noreply.github.com>

vscode-extension/openclaude-vscode/README.md

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+# OpenClaude VS Code Extension
+
+A sleek, terminal-first VS Code companion for OpenClaude.
+
+## Features
+
+- **Launch OpenClaude instantly** in the integrated terminal via `OpenClaude: Launch in Terminal`
+- **Open repository/docs quickly** via `OpenClaude: Open Repository`
+- **Built-in dark theme**: `OpenClaude Terminal Black` (terminal-inspired, low-glare, neon accents)
+
+## Requirements
+
+- VS Code `1.95+`
+- `openclaude` available in your terminal PATH (`npm install -g @gitlawb/openclaude`)
+
+## Commands
+
+- `OpenClaude: Launch in Terminal`
+- `OpenClaude: Open Repository`
+
+## Settings
+
+- `openclaude.launchCommand` (default: `openclaude`)
+- `openclaude.terminalName` (default: `OpenClaude`)
+- `openclaude.useOpenAIShim` (default: `true`)
+
+## Development
+
+From this folder:
+
+```bash
+npm run lint
+```
+
+To package (optional):
+
+```bash
+npm run package
+```
+