Add web multimodal image attachments

packages/host/apiproxy/src/fetch/handler.ts

@@ -16,6 +16,7 @@ import type { Wire } from '../api/rpc.schema.ts'
 import { clientRequestSchema, clientResponseSchema } from '../api/rpc.schema.ts'
 import {
   sessionCancelRequestSchema,
+  sessionAttachmentRequestSchema,
   sessionCreateRequestSchema,
   sessionHistoryRequestSchema,
   sessionListRequestSchema,
@@ -42,6 +43,7 @@ const UNARY_ROUTES: UnaryRoutes = {
   'session.create': { schema: sessionCreateRequestSchema, invoke: (api, r) => api.sessions.create(r) },
   'session.history': { schema: sessionHistoryRequestSchema, invoke: (api, r) => api.sessions.history(r) },
   'session.prompt': { schema: sessionPromptRequestSchema, invoke: (api, r) => api.sessions.prompt(r) },
+  'session.attachment': { schema: sessionAttachmentRequestSchema, invoke: (api, r) => api.sessions.attachment(r) },
   'session.cancel': { schema: sessionCancelRequestSchema, invoke: (api, r) => api.sessions.cancel(r) },
   'host.describe': { schema: hostDescribeRequestSchema, invoke: (api, r) => api.host.describe(r) },
 }