test: port instance HttpApi path/vcs read coverage to Effect

packages/opencode/src/server/routes/instance/httpapi/groups/mcp.ts

@@ -15,6 +15,7 @@ export const AddPayload = Schema.Struct({
 export const StatusMap = Schema.Record(Schema.String, MCP.Status)
 export const AuthStartResponse = Schema.Struct({
   authorizationUrl: Schema.String,
+  oauthState: Schema.String,
 })
 export const AuthCallbackPayload = Schema.Struct({
   code: Schema.String,

packages/opencode/src/server/routes/instance/httpapi/groups/session.ts

@@ -10,7 +10,6 @@ import { SessionSummary } from "@/session/summary"
 import { Todo } from "@/session/todo"
 import { MessageID, PartID, SessionID } from "@/session/schema"
 import { Snapshot } from "@/snapshot"
-import { NonNegativeInt } from "@/util/schema"
 import { Schema, SchemaGetter, Struct } from "effect"
 import { HttpApi, HttpApiEndpoint, HttpApiError, HttpApiGroup, HttpApiSchema, OpenApi } from "effect/unstable/httpapi"
 import { Authorization } from "../middleware/authorization"
@@ -45,7 +44,7 @@ export const UpdatePayload = Schema.Struct({
   permission: Schema.optional(Permission.Ruleset),
   time: Schema.optional(
     Schema.Struct({
-      archived: Schema.optional(NonNegativeInt),
+      archived: Schema.optional(Session.ArchivedTimestamp),
     }),
   ),
 })