Quorum v0.5.3

What's Changed

• Add per-agent custom binary path overrides in Providers settings by @alchaplinsky in #173
• Kill child processes on app quit instead of orphaning them by @alchaplinsky in #174
• Add error and crash reporting (local logs + Sentry) by @alchaplinsky in #175
• Make agent failures visible and recoverable by @alchaplinsky in #176
• First-run readiness check: detect agent CLIs + git by @alchaplinsky in #177
• feat(onboarding): preview real sidebar rows & provider brand icons by @alchaplinsky in #178
• feat(layout): persist panel layout & window size across restarts by @alchaplinsky in #180
• Robustness & a11y: error boundary, file-editor error surfacing, keyboard-operable sidebar rows by @alchaplinsky in #179
• Redesign onboarding readiness: git/gh checks + agent grid by @alchaplinsky in #181
• Fix composer model labeling for existing sessions by @alchaplinsky in #182
• fix: align header Q mark to the lowercase wordmark by @alchaplinsky in #183
• feat(pr): bind PR identity to worktree row, not branch name by @alchaplinsky in #184
• chore: bump version to 0.5.3 by @alchaplinsky in #185

Full Changelog: v0.5.2...v0.5.3