refactor: remove ai-sdk

src/llms/utils.ts

@@ -0,0 +1,21 @@
+/**
+ * Utility functions for LLM integration
+ */
+import { z } from 'zod'
+
+import type { Tool } from './types'
+
+/**
+ * Convert Zod schema to OpenAI tool format
+ * Uses Zod 4 native z.toJSONSchema()
+ */
+export function zodToOpenAITool(name: string, tool: Tool) {
+	return {
+		type: 'function' as const,
+		function: {
+			name,
+			description: tool.description,
+			parameters: z.toJSONSchema(tool.inputSchema, { target: 'openapi-3.0' }),
+		},
+	}
+}