crates/notebook/README.md        |   3 +-
 crates/notebook/src/session.rs   |  12 ++++
 crates/notebook/tests/session.rs |  32 ++++++++++
 crates/snowbound/src/main.rs     |  16 +++--
 crates/snowbound/src/sidebar.rs  |  27 ++++----
 crates/snowbound/src/unread.rs   | 108 ++++++++++++++++++++++++++------
 crates/ui/src/shell.rs           |  34 ++++++++--
 tools/canvas/README.md           |   2 +-
 8 files changed, 193 insertions(+), 41 deletions(-)