Post-React-migration regressions: spawn submit button moved to modal
footer, sidebar footer restored (help/theme/palette/status/spawn),
session card stripped of redundant Tailwind, action buttons use proper
leaf-act/leaf-actions CSS structure for hover-only visibility.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Deletes the vanilla shell and mounts App.tsx on #root. main.ts and the
23 views it drove are gone; App.tsx composes the ported components —
sidebar, multi-view, command bar, spawn modal, help and restart
overlays, daemon link, drawer — around the catalog and layout stores.
The pure parts of four deleted modules moved next to the components
that still use them: the spawn-form model and spawnSimilar into
components/spawn, the transcript's markdown/format helpers and the diff
into components/structured, the help overlay's grouping into
components/dialogs. Document-level event names now live in uiEvents.ts.
Deduplicated two pairs the migration left side by side: the sidebar
uses dialogs/KillDialog and common/ContextMenu. It also listens for the
command bar's kill/rename events, which nothing had picked up since
catalog.ts went away.
styles.css stays as the token and base layer, with `#app` renamed to
`#root` and the pane-body rules re-keyed off the classes the React
panes actually carry.
Closes#253
Ports the vanilla spawn form/modal to src/components/spawn/:
SpawnModal, SpawnForm, DirAutocomplete, BranchPicker, and a
useFastForward hook for the one-keystroke spawn. Pure logic modules
(spawnForm.ts's buildSpawnRequest, fastForward.ts, spawnSimilar.ts,
projectList.ts, toolIcon.ts) are reused as-is rather than re-derived.
Exports supportsStructuredView from spawnForm.ts so the React form can
share the structured-view-eligibility check with the vanilla one.
