feat(tui): add session switcher plugin (#29861)

packages/opencode/src/cli/cmd/tui/plugin/internal.ts

@@ -11,6 +11,8 @@ import Notifications from "../feature-plugins/system/notifications"
 import SessionV2Debug from "../feature-plugins/system/session-v2"
 import WhichKey from "../feature-plugins/system/which-key"
 import DiffViewer from "../feature-plugins/system/diff-viewer"
+import SessionSwitcher from "../feature-plugins/session"
+import { Flag } from "@opencode-ai/core/flag/flag"
 import type { TuiPlugin, TuiPluginModule } from "@opencode-ai/plugin/tui"
 import type { RuntimeFlags } from "@/effect/runtime-flags"
 
@@ -35,5 +37,6 @@ export function internalTuiPlugins(flags: Pick<RuntimeFlags.Info, "experimentalE
     WhichKey,
     DiffViewer,
     ...(flags.experimentalEventSystem ? [SessionV2Debug] : []),
+    ...(Flag.OPENCODE_EXPERIMENTAL_SESSION_SWITCHER ? [SessionSwitcher] : []),
   ]
 }