fix(openai-adapters): change 'parameters' to 'inputSchema' for AI SDK v5

AI SDK v5 renamed the tool property from 'parameters' to 'inputSchema'. This was causing tool schema validation errors where the SDK couldn't recognize the tool definitions. Fixes tool calling tests that were failing with: - 'Invalid schema for function' errors - 'got type: None' errors Co-authored-by: nate <nate@continue.dev> Generated with [Continue](https://continue.dev) Co-Authored-By: Continue <noreply@continue.dev>

Author: continue[bot]

packages/openai-adapters/src/convertToolsToVercel.ts

@@ -8,7 +8,7 @@ import type { ChatCompletionCreateParams } from "openai/resources/index.js";
  * Converts OpenAI tool format to Vercel AI SDK format.
  *
  * OpenAI format: { type: "function", function: { name, description, parameters: JSONSchema } }
- * Vercel format: { [toolName]: { description, parameters: aiJsonSchema(JSONSchema) } }
+ * Vercel format (AI SDK v5): { [toolName]: { description, inputSchema: aiJsonSchema(JSONSchema) } }
  *
  * @param openaiTools - Array of OpenAI tools or undefined
  * @returns Object with tool names as keys, or undefined if no tools
@@ -27,7 +27,7 @@ export async function convertToolsToVercelFormat(
  if (tool.type === "function") {
  vercelTools[tool.function.name] = {
  description: tool.function.description,
- parameters: aiJsonSchema(
+ inputSchema: aiJsonSchema(
  tool.function.parameters ?? { type: "object", properties: {} },
  ),
  };