File tabs now save Markdown, code and text edits through one document
lifecycle, with dirty indicators, close protection, external-change checks,
and BOM/newline preservation. Markdown gains heading navigation and file
information alongside preview and source editing.
Add named tab/window layout recipes using the existing session schema,
remember quick-terminal dimensions, and allow the global hotkey to recall
an existing window. Dock previews and insertion use the hovered pane, with
an outer-edge target for a full row or column.
Add Breeze and Mint light/dark themes, filter settings navigation as the
query changes, expose a font dropdown arrow, and redraw the command icon.
Validated on the isolated commit snapshot with Windows GPUI compilation,
editor and settings interaction tests, workspace/theme tests, shared
settings/split and i18n contracts, architecture checks, and formatting.
kuddev
3a1572b7f6