feat: add opentui interface for opencode

- Add comprehensive TUI interface with React Ink components
- Implement session management, model selection, and command dialogs
- Add theme system with customizable colors and styling
- Integrate with existing opencode server and SDK
- Add todo management and file browsing capabilities
- Include proper TypeScript support and error handling

packages/plugin/src/example.ts

@@ -3,10 +3,9 @@ import { tool } from "./tool"
 
 export const ExamplePlugin: Plugin = async (ctx) => {
   return {
-    permission: {},
     tool: {
       mytool: tool({
-        description: "This is a custom tool tool",
+        description: "This is a custom tool",
         args: {
           foo: tool.schema.string().describe("foo"),
         },
@@ -15,8 +14,5 @@ export const ExamplePlugin: Plugin = async (ctx) => {
         },
       }),
     },
-    async "chat.params"(_input, output) {
-      output.topP = 1
-    },
   }
 }