fix(launcher): preserve local game state after directory changes

The accepted root transition already publishes the replacement local snapshot
before the transfer-status fence completes. Clearing local flags again when
committing the folder erased that snapshot, and the subsequent ListGames
refresh only restored remote availability. Keep the accepted local state.

Test Plan:
- `just fmt`, `just clippy`, and `just test` -- passed on the full worktree.
- `just frontend-test` -- 94 passed on the full worktree.
- `git diff --cached --check` -- passed.
- GUI directory switching was not exercised interactively.

crates/lanspread-tauri-deno-ts/src-tauri/src/lib.rs

@@ -2286,12 +2286,6 @@ fn apply_peer_remote_view(
     }
 }
 
-fn clear_all_local_game_states(game_db: &mut GameDB) {
-    for game in game_db.games.values_mut() {
-        clear_local_game_state(game);
-    }
-}
-
 fn emit_game_transfer_status_snapshot(
     app_handle: &AppHandle,
     snapshot: &GameTransferStatusSnapshot,
@@ -3112,10 +3106,10 @@ async fn update_game_directory(
         reset_game_transfer_status_for_root(&app_handle).await?;
     }
     *state.games_folder.write().await = accepted_path.clone();
-    if accepted_path_changed {
-        let mut game_db = state.games.write().await;
-        clear_all_local_game_states(&mut game_db);
-    }
+    // Core's accepted root transition publishes the replacement local snapshot;
+    // the transfer-status fence above has already applied its queued events.
+    // Keep those local flags when committing the path. ListGames refreshes only
+    // remote availability and cannot restore a snapshot erased here.
 
     emit_games_list(&app_handle).await;
     if let Some(peer_ctrl) = state.peer_ctrl.read().await.as_ref()