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/Board/NewCardTarget.swift

@@ -8,7 +8,7 @@
 /// > a multi-selection anchors at its last member in flatten order (lane `order`, then card
 /// > `order`, the multi-drag order; the same anchor serves paste): creation follows the last
 /// > selected card, or appends to the last selected lane; … with nothing selected — or a
-/// > **tombstoned** selection, which never anchors creation — the **last-active lane** — the lane
+/// > **trash** selection, which never anchors creation — the **last-active lane** — the lane
 /// > that most recently held selection or a creation in this window session — falling back to the
 /// > first lane. … **Zero-lane board**: card creation … disable[s] via menu validation until a
 /// > lane exists.
@@ -59,7 +59,7 @@ enum NewCardTarget {
         if let anchor = flattenAnchor(selection: selection, snapshot: snapshot) {
             return anchor
         }
-        // Nothing selected, a tombstoned selection, or a stale one — the ids name nothing the board
+        // Nothing selected, a trash selection, or a stale one — the ids name nothing the board
         // renders, a selection the next reload will drop. Falls through rather than refusing: the
         // user pressed ⌘N and the board has lanes. The target is then the lane that most recently
         // held selection or a creation, and the first lane when there is no such lane (or it has
@@ -81,7 +81,7 @@ enum NewCardTarget {
     /// rule 04 says they share.
     ///
     /// `nil` covers the three cases that anchor nothing, which the callers then answer their own way:
-    /// an empty selection, a **tombstoned** one ("a tombstoned selection never anchors paste",
+    /// an empty selection, a **trash** one ("a trash selection never anchors paste",
     /// settled — and "a trashed card's live disk-lane never leaks in as 'the selected card's lane'",
     /// which falls out of never looking at the trashed side at all), and a stale one whose ids name
     /// nothing the board renders.