The selected project's session list — live and archived — refreshed every couple of seconds and shared by the sessions rail and the main pane so both read one list, and able to tell a session that is gone from one not read yet, so a bookmarked session link never flashes "gone" while the first read is still out.

## Before writing SPEC.md files

Read https://raw.githubusercontent.com/brillout/sdd/refs/heads/main/sdd.md
