v0.12.3

What's Changed

• fix(tui): make split-pane vertical focus reachable via C-x arrow by @edwin-zvs in #623
• feat(tui): show cropped session terminal preview on program shimmer hover by @edwin-zvs in #624
• feat(tui): reusable session-picker dialog (C-x b + @→session) by @edwin-zvs in #625
• fix(tui): anchor @→session picker in place, fixed-height switcher by @edwin-zvs in #626
• feat(tui): left-arrow go-back from @→session picker to context menu by @edwin-zvs in #627
• fix(tui): expose first row when scrolling session picker back up by @edwin-zvs in #628
• fix(tui): hydrate program-referenced sessions so shimmer hover preview renders by @edwin-zvs in #631
• Fix web Program optimistic re-run feedback by @edwin-zvs in #630
• Guide program moves into one edit call by @edwin-zvs in #629
• Stabilize Program shimmer block identity by @edwin-zvs in #632
• fix(tui): preserve newlines in headless/chat-view conversation by @edwin-zvs in #633
• Add optimistic Program shimmer tests by @edwin-zvs in #634
• Release v0.12.3 by @edwin-zvs in #635

Full Changelog: v0.12.2...v0.12.3