1.4.10 — 2026-06-18
Session history that stays fast with thousands of sessions.
Features
- Session history loads in pages and stays fast at scale. The history dropdown used to read and parse every saved session on each open, which got slow once a project had hundreds or thousands of them. It now loads the most recent 100 (newest first by last activity) and pulls in older ones as you scroll to the bottom. The search box filters by name across your entire history — not just the loaded page — so you can still find an old session instantly. Behind the scenes it orders sessions with one cheap directory
stateach (no file reads), reads only the page you're looking at, and caches by file modification time so re-opening the dropdown costs effectively no disk reads. (src/sessions.ts, src/sidebar.ts, media/chat.js, media/chat.css) - Switching model or reasoning effort on a fresh session no longer clutters history. Some model and effort changes need the session to restart. If you flip them a few times right after opening a session — before you've actually said anything — each restart used to leave behind an empty, identical session in your history. Now an empty session (one where only the hidden setup has run) restarts cleanly with no "Summarize & Restart vs. Just Restart" prompt, and the throwaway session is removed instead of piling up. If you had renamed that session, the name carries over to the restarted one. (src/sidebar.ts, src/sessions.ts)
Fixes
- History dropdown no longer opens clipped off the right edge. Opening the session-history popover quickly (before its rows had finished loading) could position it too far right, so it spilled past the panel edge and only looked right after closing and reopening. The popover is now right-aligned to the panel (respecting the edge padding) and grows leftward, so it stays fully on-screen no matter how its contents resize as sessions load in. In a narrow panel it also caps its width to fit, so a long session name truncates with an ellipsis instead of pushing the popover off the left edge. Resizing the panel while the dropdown is open now re-fits it live (no need to close and reopen), and switching to another panel tab or extension closes it so it can't reappear mis-sized when you come back. (media/chat.js)
Internal
- Opt-in performance simulation for the history popover. A new
npm run test:perfsuite (kept out ofnpm testand CI) builds a 5000-session in-memory store and asserts the access-count improvement: first open drops file reads from 5000 to 100 (~98%), a repeat open does zero reads (modification-time cache), and search warms the catalog once then stays read-free — with a modeled-latency projection and a real in-memory parse-cost wall-clock. (test/sessions.perf.ts, vitest.perf.config.ts, package.json)
Docs
- Documented the pagination design in docs/architecture.md (§ History at scale) and CLAUDE.md (§ History pagination), and updated the Session history feature note in the README.