Add docs for MCP client setup

docs/mcp-clients.md

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+# Model Context Protocol (MCP) Clients
+
+## Visual Studio Code
+
+[Click to install Wassette in GitHub Copilot in Visual Studio Code](vscode:mcp/install?%7B%22name%22%3A%22wassette%22%2C%22gallery%22%3Afalse%2C%22command%22%3A%22wassette%22%2C%22args%22%3A%5B%22serve%22%2C%22--stdio%22%5D%7D), or add the Wassete MCP server to VS Code from the command line using the `code` command:
+
+```bash
+code --add-mcp '{"name":"wassette","command":"wassette","args":["serve","--stdio"]}'
+```
+
+You can list and configure MCP servers in VS Code by running the command `MCP: List Servers` in the command palette (Ctrl+Shift+P or Cmd+Shift+P).
+
+## Cursor
+
+Click the below button to use the [one-click installation](https://docs.cursor.com/en/context/mcp#one-click-installation) to add Wassette to Cursor.
+
+[![Install MCP Server](https://cursor.com/deeplink/mcp-install-light.svg)](https://cursor.com/install-mcp?name=wassette&config=JTdCJTIyY29tbWFuZCUyMiUzQSUyMndhc3NldHRlJTIwc2VydmUlMjAtLXN0ZGlvJTIyJTdE)
+## Claude Code
+
+First, [install Claude Code](https://github.com/anthropics/claude-code?tab=readme-ov-file#get-started) (requires Node.js 18 or higher):
+
+```bash
+npm install -g @anthropic-ai/claude-code
+```
+
+Add the Wassette MCP server to Claude Code using the following command:
+
+```bash
+claude mcp add -- wassette wassette serve --stdio
+```
+
+This will configure the Wassette MCP server as a local stdio server that Claude Code can use to execute Wassette commands and interact with your data infrastructure.
+
+You can verify the installation by running:
+```bash
+claude mcp list
+```
+
+To remove the server if needed:
+```bash
+claude mcp remove wassette
+```
+
+## Gemini CLI
+
+First, [install Gemini CLI](https://github.com/google-gemini/gemini-cli?tab=readme-ov-file#quickstart) (requires Node.js 20 or higher):
+
+```bash
+npm install -g @google/gemini-cli
+```
+
+To add the Wassette MCP server to Gemini CLI, you need to configure it in your settings file at `~/.gemini/settings.json`. Create or edit this file to include:
+
+```json
+{
+  "mcpServers": {
+    "wassette": {
+      "command": "wassette",
+      "args": ["serve", "--stdio"]
+    }
+  }
+}
+```
+
+Quit the Gemini CLI and reopen it.
+
+Open Gemini CLI and verify the installation by running `/mcp` inside of Gemini CLI.