Session Board 0.9.0

• Live sessions are grouped by VS Code window: one collapsible section per window, named after its workspace (the window's folder, or the name of a multi-root workspace), the window this board runs in first, the rest by activity; sessions started outside VS Code sit under Elsewhere. The Needs you, Working, Unseen and Idle groups are gone; inside a section the rows keep that order, and "Show N idle over 2h" folds per section
• Every section heading carries a number: the sessions in it that wait for you (amber) or are unseen (green)
• ⊘ on a row blinds the session: it moves under the folded Blinded section at the bottom and stays there, waiting or not, until ⊙ brings it back. Blinded sessions count on the Blinded heading only; the counts line, the tab title, the activity-bar badge, the toast and the browser notification leave them out. The flag lives in %LOCALAPPDATA%\SessionBoard\blinded\<id>.json, is shared by every window and the browser page, and goes once the session can no longer be resumed
• A typed filter shows blinded and archived matches in their window section, every section unfolded
• A window names its section through the heartbeat its board writes; a window still running an older board keeps the folder name until it reloads
• Browser page: POST /api/blind/<id> and POST /api/unblind/<id>