refactor(core): rename system context to instructions (#35583)

packages/tui/src/context/data.tsx

@@ -302,7 +302,7 @@ export const { use: useData, provider: DataProvider } = createSimpleContext({
             })
           })
           break
-        case "session.context.updated":
+        case "session.instructions.updated":
           message.update(event.data.sessionID, (draft, index) => {
             message.append(draft, index, {
               id: messageIDFromEvent(event.id),

packages/tui/src/routes/session/rows.ts

@@ -149,7 +149,7 @@ export function createSessionRows(sessionID: Accessor<string>) {
   }
   const subscriptions = [
     data.on("session.prompt.admitted", input),
-    data.on("session.context.updated", message),
+    data.on("session.instructions.updated", message),
     data.on("session.synthetic", (event) => {
       if (event.data.sessionID === sessionID() && event.data.description?.trim())
         appendMessage(event.id.replace(/^evt_/, "msg_"))