v0.21.0

• fix: update tokio for RUSTSEC-2026-0386 and skip snapshots in typos
• fix: keep pickers and input boxes still while typing
• fix: line up the key descriptions in the help popup
• fix: open sparse checkouts of partial clones
• fix: pass the worktree tests on every ci platform
• feat: show checks, review, size, labels and age in the pr list
• feat: show and request pull request reviewers
• feat: default to the histogram diff algorithm
• fix: show worktrees above the repo divider
• docs: list the worktrees group in the status bands
• feat: open, create and remove worktrees as project tabs
• feat: add a pull request page with its description and conversation
• feat: step through a file's history in the file view
• feat: show forge avatars on comment cards
• feat: load your own themes from toml files
• fix: refuse focus past a file's end and name any file in its description
• docs: ask for conventional commit messages
• fix: speed up opening by watching the repo once and capping the image query at 500ms

Full changelog: v0.20.0...v0.21.0