feat: add Claude Code plugin support (#240)

src/tools/ast-grep/index.ts

@@ -1,6 +1,7 @@
+import type { ToolDefinition } from "@opencode-ai/plugin"
 import { ast_grep_search, ast_grep_replace } from "./tools"
 
-export const builtinTools = {
+export const builtinTools: Record<string, ToolDefinition> = {
   ast_grep_search,
   ast_grep_replace,
 }