feat(plugin): add tui.session.select API endpoint for TUI navigation (#6565)

Co-authored-by: Aiden Cline <aidenpcline@gmail.com>

packages/opencode/src/cli/cmd/tui/app.tsx

@@ -549,6 +549,13 @@ function App() {
     })
   })
 
+  sdk.event.on(TuiEvent.SessionSelect.type, (evt) => {
+    route.navigate({
+      type: "session",
+      sessionID: evt.properties.sessionID,
+    })
+  })
+
   sdk.event.on(SessionApi.Event.Deleted.type, (evt) => {
     if (route.data.type === "session" && route.data.sessionID === evt.properties.info.id) {
       route.navigate({ type: "home" })