Materialize the trash — faces, menus, and grammar

Phase 3 finishes the pivot at the surface. One card face serves two
containers: CardFaceView extracted with a role — board or trash — so
stripe, tint, chip, selection stroke, cut dim, marquee registration,
and drag are shared by construction, the trash side differing only in
its absences: no Open, no rename, no Style, no file-hover highlight,
and a Delete that goes through the confirmation host. The column
rewrote around the lanes' own single-column masonry so drag reflow
reads as positional slides; chrome stays the hatched header, symbol,
and count — 11 gives Empty Trash to the File menu alone. Two real
grammar bugs die here: plain Backspace on a trash selection purged
without the confirmation the menu raises, and the context menu's
Delete resolved against the standing selection, so right-clicking a
trash card under a board selection silently did nothing — it now
stages the clicked set explicitly. Open, Rename, Style, and Empty
Trash validation became testable store seams; the column is one named
accessibility container of ordinary card elements. The tombstone era
is swept: deleteItem, restoreItem, stripTombstonedChildren — dead
since lane copies stopped nesting trash — the restore verb, the
unreachable put-back banner row, and every quasi-lane doc comment.

Claude-Session: https://claude.ai/code/session_01SR4XGjmBE16ZUYWpfFHXwY

Kanban/UI/Card/CardWindowView.swift

@@ -46,9 +46,9 @@ struct CardWindowView: View {
     /// the sidebar is why: the Style section hosts the **shared** style editor, whose API is
     /// store-shaped by design (it reads the target set's current values and writes through the one
     /// `applyStyle` bracket every anchor shares), and the Actions section's Delete is the store's own
-    /// tombstone. Routing either through a closure of this window's own would be a second card-styling
-    /// or card-deleting path to keep in step with the first — exactly what "one component, one
-    /// behavior" and "exactly the ⌫ tombstone" forbid.
+    /// move-to-trash. Routing either through a closure of this window's own would be a second
+    /// card-styling or card-deleting path to keep in step with the first — exactly what "one
+    /// component, one behavior" and "exactly the ⌫ delete" forbid.
     let store: BoardStore
     /// The app-wide quick-style recents the embedded editor feeds (03-board-ui.md ▸ Styling ▸
     /// Controls) — app state, not board state, which is why it arrives beside the store rather than