fix: correct Provider type in chat.params plugin hook (#5003)

packages/plugin/src/index.ts

@@ -16,6 +16,12 @@ import { type ToolDefinition } from "./tool"
 
 export * from "./tool"
 
+export type ProviderContext = {
+  source: "env" | "config" | "custom" | "api"
+  info: Provider
+  options: Record<string, any>
+}
+
 export type PluginInput = {
   client: ReturnType<typeof createOpencodeClient>
   project: Project
@@ -153,7 +159,7 @@ export interface Hooks {
    * Modify parameters sent to LLM
    */
   "chat.params"?: (
-    input: { sessionID: string; agent: string; model: Model; provider: Provider; message: UserMessage },
+    input: { sessionID: string; agent: string; model: Model; provider: ProviderContext; message: UserMessage },
     output: { temperature: number; topP: number; options: Record<string, any> },
   ) => Promise<void>
   "permission.ask"?: (input: Permission, output: { status: "ask" | "deny" | "allow" }) => Promise<void>