feat: gigacode (#92)

server/packages/gigacode/README.md

@@ -0,0 +1,80 @@
+# GigaCode
+
+Use [OpenCode](https://opencode.ai)'s UI with any coding agent.
+
+Supports Claude Code, Codex, and Amp.
+
+This is __not__ a fork. It's powered by [Sandbox Agent SDK](https://sandboxagent.dev)'s wizardry.
+
+> **Experimental**: This project is under active development. Please report bugs on [GitHub Issues](https://github.com/rivet-dev/sandbox-agent/issues) or join our [Discord](https://rivet.dev/discord).
+
+## How It Works
+
+```
+┌─ GigaCode ────────────────────────────────────────────────────────┐
+│ ┌─────────────────┐    ┌─────────────────┐    ┌─────────────────┐ │
+│ │  OpenCode TUI   │───▶│  Sandbox Agent  │───▶│  Claude Code /  │ │
+│ │                 │    │                 │    │   Codex / Amp   │ │
+│ └─────────────────┘    └─────────────────┘    └─────────────────┘ │
+└───────────────────────────────────────────────────────────────────┘
+```
+
+- [Sandbox Agent SDK](https://sandboxagent.dev) provides a universal HTTP API for controlling Claude Code, Codex, and Amp
+- Sandbox Agent SDK exposes an [OpenCode-compatible endpoint](https://sandboxagent.dev/opencode-compatibility) so OpenCode can talk to any agent
+- OpenCode connects to Sandbox Agent SDK via [`attach`](https://opencode.ai/docs/cli/#attach)
+
+## Install
+
+**macOS / Linux / WSL (Recommended)**
+
+```bash
+curl -fsSL https://releases.rivet.dev/sandbox-agent/latest/gigacode-install.sh | sh
+```
+
+**npm i -g**
+
+```bash
+npm install -g gigacode
+gigacode --help
+```
+
+**bun add -g**
+
+```bash
+bun add -g gigacode
+# Allow Bun to run postinstall scripts for native binaries.
+bun pm -g trust gigacode-linux-x64 gigacode-linux-arm64 gigacode-darwin-arm64 gigacode-darwin-x64 gigacode-win32-x64
+gigacode --help
+```
+
+**npx**
+
+```bash
+npx gigacode --help
+```
+
+**bunx**
+
+```bash
+bunx gigacode --help
+```
+
+> **Note:** Windows is unsupported. Please use [WSL](https://learn.microsoft.com/en-us/windows/wsl/install).
+
+## Usage
+
+**TUI**
+
+Launch the OpenCode TUI with any coding agent:
+
+```bash
+gigacode
+```
+
+**Web UI**
+
+Use the [OpenCode Web UI](https://sandboxagent.dev/opencode-compatibility) to control any coding agent from the browser.
+
+**OpenCode SDK**
+
+Use the [`@opencode-ai/sdk`](https://sandboxagent.dev/opencode-compatibility) to programmatically control any coding agent.