feat(plugin): add session request hook

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

@@ -4,8 +4,11 @@ import type { Agent } from "@opencode-ai/schema/agent"
 import type { Model } from "@opencode-ai/schema/model"
 import type { Session } from "@opencode-ai/schema/session"
 import type { JsonSchema } from "effect"
+import type { SessionRequest } from "../session.js"
 import type { Hooks } from "./registration.js"
 
+export type { RequestBody, RequestValue, SessionRequest } from "../session.js"
+
 export interface SessionContext {
   readonly sessionID: Session.ID
   readonly agent: Agent.ID
@@ -17,6 +20,7 @@ export interface SessionContext {
 
 export interface SessionHooks {
   readonly context: SessionContext
+  readonly request: SessionRequest
 }
 
 export type SessionDomain = Pick<

packages/plugin/src/v2/promise/session.ts

@@ -4,8 +4,11 @@ import type { Agent } from "@opencode-ai/schema/agent"
 import type { Model } from "@opencode-ai/schema/model"
 import type { Session } from "@opencode-ai/schema/session"
 import type { JsonSchema } from "effect"
+import type { SessionRequest } from "../session.js"
 import type { Hooks } from "./registration.js"
 
+export type { RequestBody, RequestValue, SessionRequest } from "../session.js"
+
 export interface SessionContext {
   readonly sessionID: Session.ID
   readonly agent: Agent.ID
@@ -17,6 +20,7 @@ export interface SessionContext {
 
 export interface SessionHooks {
   readonly context: SessionContext
+  readonly request: SessionRequest
 }
 
 export type SessionDomain = Pick<

packages/plugin/src/v2/session.ts

@@ -0,0 +1,21 @@
+import type { Agent } from "@opencode-ai/schema/agent"
+import type { Model } from "@opencode-ai/schema/model"
+import type { Session } from "@opencode-ai/schema/session"
+
+export type RequestValue =
+  | null
+  | boolean
+  | number
+  | string
+  | Array<RequestValue>
+  | { [key: string]: RequestValue }
+
+export type RequestBody = Record<string, RequestValue>
+
+export interface SessionRequest {
+  readonly sessionID: Session.ID
+  readonly agent: Agent.ID
+  readonly model: Model.Ref
+  headers: Record<string, string>
+  body: RequestBody
+}