feat(plugin): add v2 effect host (#33111)

packages/plugin/src/v2/effect/aisdk.ts

@@ -0,0 +1,21 @@
+import type { LanguageModelV3 } from "@ai-sdk/provider"
+import type { ModelV2Info } from "@opencode-ai/sdk/v2/types"
+import type { Effect } from "effect"
+import type { Hookable } from "./registration.js"
+
+export interface AISDKHooks {
+  readonly sdk: (event: {
+    readonly model: ModelV2Info
+    readonly package: string
+    readonly options: Record<string, any>
+    sdk?: any
+  }) => Effect.Effect<void> | void
+  readonly language: (event: {
+    readonly model: ModelV2Info
+    readonly sdk: any
+    readonly options: Record<string, any>
+    language?: LanguageModelV3
+  }) => Effect.Effect<void> | void
+}
+
+export interface AISDK extends Hookable<AISDKHooks> {}