fix(sdk): type SSE event payloads

Patch Effect OpenAPI generation so data-mode SSE responses expose their JSON payload schema instead of the raw data-line string wrapper. Regenerate legacy SDK types so V2Event and SessionDurableEvent remain the public payload unions.

Co-authored-by: opencode-agent[bot] <opencode-agent[bot]@users.noreply.github.com>

bun.lock

@@ -1051,6 +1051,7 @@
     "@modelcontextprotocol/sdk@1.29.0": "patches/@modelcontextprotocol%2Fsdk@1.29.0.patch",
     "gcp-metadata@8.1.2": "patches/gcp-metadata@8.1.2.patch",
     "@standard-community/standard-openapi@0.2.9": "patches/@standard-community%2Fstandard-openapi@0.2.9.patch",
+    "effect@4.0.0-beta.83": "patches/effect@4.0.0-beta.83.patch",
     "@npmcli/agent@4.0.2": "patches/@npmcli%2Fagent@4.0.2.patch",
     "@silvia-odwyer/photon-node@0.3.4": "patches/@silvia-odwyer%2Fphoton-node@0.3.4.patch",
     "@tanstack/solid-virtual@3.13.28": "patches/@tanstack%2Fsolid-virtual@3.13.28.patch",

package.json

@@ -153,6 +153,7 @@
     "@tanstack/solid-virtual@3.13.28": "patches/@tanstack%2Fsolid-virtual@3.13.28.patch",
     "@pierre/trees@1.0.0-beta.4": "patches/@pierre%2Ftrees@1.0.0-beta.4.patch",
     "@modelcontextprotocol/sdk@1.29.0": "patches/@modelcontextprotocol%2Fsdk@1.29.0.patch",
-    "@tanstack/virtual-core@3.17.0": "patches/@tanstack%2Fvirtual-core@3.17.0.patch"
+    "@tanstack/virtual-core@3.17.0": "patches/@tanstack%2Fvirtual-core@3.17.0.patch",
+    "effect@4.0.0-beta.83": "patches/effect@4.0.0-beta.83.patch"
   }
 }

packages/sdk/js/src/v2/gen/types.gen.ts

@@ -2766,8 +2766,6 @@ export type SessionHistory = {
   hasMore: boolean
 }
 
-export type SessionDurableEvent1 = string
-
 export type SessionMessagesResponse = {
   data: Array<SessionMessage>
   cursor: {
@@ -2847,7 +2845,7 @@ export type QuestionRejected2 = {
   }
 }
 
-export type V2Event1 =
+export type V2Event =
   | ModelsDevRefreshed
   | IntegrationUpdated
   | IntegrationConnectionUpdated
@@ -2937,8 +2935,6 @@ export type V2Event1 =
   | ServerConnected
   | GlobalDisposed
 
-export type V2Event = string
-
 export type ForbiddenError = {
   _tag: "ForbiddenError"
   message: string
@@ -11898,11 +11894,7 @@ export type V2SessionEventsResponses = {
   /**
    * Success
    */
-  200: {
+  200: SessionDurableEvent
-    id: string
-    event: string
-    data: SessionDurableEvent1
-  }
 }
 
 export type V2SessionEventsResponse = V2SessionEventsResponses[keyof V2SessionEventsResponses]

packages/tui/src/context/data.tsx

@@ -16,7 +16,7 @@ import type {
   SessionMessageAssistantTool,
   SessionV2Info,
   SkillV2Info,
-  V2Event1,
+  V2Event,
 } from "@opencode-ai/sdk/v2"
 import { createStore, produce } from "solid-js/store"
 import { createSimpleContext } from "./helper"
@@ -121,7 +121,7 @@ export const { use: useData, provider: DataProvider } = createSimpleContext({
       },
     }
 
-    function handleEvent(event: V2Event1) {
+    function handleEvent(event: V2Event) {
       switch (event.type) {
         case "catalog.updated":
           void Promise.all([
@@ -408,7 +408,7 @@ export const { use: useData, provider: DataProvider } = createSimpleContext({
           ...event,
           data: event.properties,
           location: { directory: metadata.directory, workspaceID: metadata.workspace },
-        } as V2Event1)
+        } as V2Event)
       })
       onCleanup(unsub)
     })

patches/effect@4.0.0-beta.83.patch

@@ -0,0 +1,32 @@
+diff --git a/dist/unstable/httpapi/OpenApi.js b/dist/unstable/httpapi/OpenApi.js
+index 8292ab7..9c4fd5e 100644
+--- a/dist/unstable/httpapi/OpenApi.js
++++ b/dist/unstable/httpapi/OpenApi.js
+@@ -335,7 +335,7 @@ export function fromApi(api) {
+               if (HttpApiSchema.isStreamSse(stream)) {
+                 pathOps.push({
+                   _tag: "schema",
+-                  ast: SchemaAST.getAST(stream.events),
++                  ast: stream.sseMode === "data" ? streamDataAst(stream.events) : SchemaAST.getAST(stream.events),
+                   path: ["paths", path, method, "responses", String(status), "content", contentType, "schema"]
+                 });
+                 pathOps.push({
+@@ -501,6 +501,18 @@ export function fromApi(api) {
+   return spec;
+ }
+ const reservedStreamFailureEvent = "effect/httpapi/stream/failure";
++function streamDataAst(events) {
++  const ast = SchemaAST.getAST(events);
++  if (!SchemaAST.isObjects(ast)) {
++    return ast;
++  }
++  const data = ast.propertySignatures.find(field => field.name === "data")?.type;
++  if (data === undefined) {
++    return ast;
++  }
++  const contentSchema = data.encoding?.at(-1)?.to.annotations?.contentSchema;
++  return SchemaAST.isAST(contentSchema) ? contentSchema : data;
++}
+ function extractSuccessResponseBodies(endpoint) {
+   return extractResponseBodies(HttpApiEndpoint.getSuccessSchemas(endpoint), HttpApiSchema.getStatusSuccess, resolveDescriptionOrIdentifier);
+ }