In-flight workspace UX work.
- Extract a shared PaneHeaderActions cluster (+/Split/Reopen/History/Close)
used by ChatTabBar + the Workspace coder/terminal pane headers, replacing the
divergent per-header copies; SessionLandingPage history + useWorkspacePanes
tweaks.
- Fix coder-side correctness bug: resolveChatId read sessions.workspace_panes as
a bare WorkspacePane[] but v2.6.5 widened it to a WorkspaceState envelope, so
it mis-read panes and clobbered tabNumbers/nextTabNumber/closedPaneStack on
every pane-chat write. New normalizeWorkspaceState handles either shape and
preserves the envelope (+ regression test).
- CLAUDE.md doc-sync (coder vitest suite, deploy-by-surface, dual-remote push,
in-flight-web-WIP staging, release-branch naming).
Web tsc + coder build + coder tests green. Builds on v2.7.6.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
