feat: redesign chat transcript + fix streaming/persistence lifecycle — v0.50.70 (PR #587 by @aronprins)
Redesign chat transcript + fix streaming/persistence lifecycle — v0.50.70
Squash-merges PR #587 by @aronprins (Aron Prins). Full credit to @aronprins for all feature and fix work.
Transcript redesign: unified --msg-rail/--msg-max CSS variables, user turns as tinted cards, thinking cards as bordered panels, error card treatment, day-change separators, composer fade.
Approval/clarify as composer flyouts: cards slide up from behind composer top, overflow:hidden + translateY clip prevents travel visibility, focus({preventScroll:true}).
Streaming lifecycle: DOM order user→thinking→tool cards→response, no mid-stream jump. Live tool cards inserted before [data-live-assistant].
Persistence: reasoning attached before s.save(), _restore_reasoning_metadata on reload, role=tool rows preserved in S.messages, CLI-session tool-result fallback.
Workspace panel FOUC fix: [data-workspace-panel] set at parse time.
Docs: docs/ui-ux/index.html + two-stage-proposal.html.
Maintainer additions (433b867): CHANGELOG v0.50.70, version badge, usage badge loop simplification.
Reviewed and approved by @nesquena (independent review). 1361 tests passing.
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