It’s Perf Time

This release is all about juicin’ UI perf. We did a ton of work around it, and it should be particularly noticeable with long sessions, long messages, long, open-toggled thinking blocks, mouse selection, scrolling and stuff like that.

We always strive to make the Crush user experience top-notch, so if you notice any places where perf is suffering please let us know!

Have a great weekend,
The Charm Team

Changelog

Fixed

• 646a505: fix(ui): keep tool spinners animating during long-running tasks (@meowgorithm)

Other stuff

• 30f9c6e: chore(ui): make spinner deterministic for testing (@meowgorithm)
• 8370edb: perf(chat): cache the parts of an assistant message separately (@meowgorithm)
• 771117c: perf(chat): cache the prefixed render of chat messages (@meowgorithm)
• 77b6c38: perf(chat): only render the chat lines that fit on screen (@meowgorithm)
• 1c7ccfd: perf(chat): reuse the rendered prefix of a streaming reply (@meowgorithm)
• 43b986c: perf(chat): show only the tail of long reasoning blocks when expanded (@meowgorithm)
• 65f30a1: perf(chat): skip re-parsing the rendered chat when nothing has changed (@meowgorithm)
• 6b101f3: perf(chat): skip re-rendering chat list items that have not changed (@meowgorithm)
• 6938ded: perf: batch streaming message updates (@meowgorithm)

wget 'https://github.com/charmbracelet/crush/releases/download/v0.69.1/checksums.txt'
wget 'https://github.com/charmbracelet/crush/releases/download/v0.69.1/checksums.txt.sigstore.json'

cosign verify-blob \
  --certificate-identity 'https://github.com/charmbracelet/meta/.github/workflows/goreleaser.yml@refs/heads/main' \
  --certificate-oidc-issuer 'https://token.actions.githubusercontent.com' \
  --bundle 'checksums.txt.sigstore.json' \
  ./checksums.txt

sha256sum --ignore-missing -c checksums.txt

Thoughts? Questions? We love hearing from you. Feel free to reach out on X, Discord, Slack, The Fediverse, Bluesky.