brain/cerebellum/my-capability/
├── SKILL.md
└── plugin/
    └── index.mjs        # Plugin entry point

interface WolffishPlugin {
  name: string
  tools: string[]              // Tool names this plugin handles
  init?(context: PluginContext): Promise<void>
  execute(toolName: string, args: Record<string, unknown>): Promise<ToolResult>
  destroy?(): Promise<void>
}

interface PluginContext {
  pluginDir: string            // Absolute path to this plugin's folder
  workspaceRoot: string        // Absolute path to ~/.wolffish/workspace/
}

interface ToolResult {
  success: boolean
  output: string
  error?: string
}

// brain/cerebellum/hello/plugin/index.mjs

export default {
  name: 'hello',
  tools: ['hello_world'],

  async init(context) {
    // Called once when the plugin is loaded
    // context.pluginDir = path to this plugin's folder
    // context.workspaceRoot = path to ~/.wolffish/workspace/
  },

  async execute(toolName, args) {
    if (toolName === 'hello_world') {
      return {
        success: true,
        output: `Hello, ${args.name || 'world'}!`
      }
    }
    return { success: false, output: '', error: `Unknown tool: ${toolName}` }
  },

  async destroy() {
    // Called when the plugin is unloaded (app shutdown)
  }
}

---
name: hello
description: A simple greeting capability
triggers:
  - hello
  - greet
tools:
  - name: hello_world
    description: Say hello to someone
    parameters:
      type: object
      properties:
        name:
          type: string
          description: The name to greet
      required: []
---

# Hello World

When the user asks you to say hello or greet someone, use the `hello_world` tool.