feat(core): persist v2 session context epochs (#30789)

packages/opencode/src/cli/cmd/tui/context/sync-v2.tsx

@@ -175,6 +175,16 @@ export const { use: useSyncV2, provider: SyncProviderV2 } = createSimpleContext(
             })
           })
           break
+        case "session.next.context.updated":
+          update(event.properties.sessionID, (draft) => {
+            prepend(draft, {
+              id: event.properties.messageID,
+              type: "system",
+              text: event.properties.text,
+              time: { created: event.properties.timestamp },
+            })
+          })
+          break
         case "session.next.synthetic":
           update(event.properties.sessionID, (draft) => {
             prepend(draft, {

packages/opencode/src/cli/cmd/tui/feature-plugins/system/session-v2.tsx

@@ -104,6 +104,9 @@ function View(props: { api: TuiPluginApi; sessionID: string }) {
                   <Match when={message.type === "synthetic"}>
                     <></>
                   </Match>
+                  <Match when={message.type === "system"}>
+                    <></>
+                  </Match>
                   <Match when={message.type === "shell"}>
                     <ShellMessage message={message as SessionMessageShell} />
                   </Match>