Realign code with the 2026-07-30 findings-resolution rulings

Delete Immediately is removed entirely (ruling ae1dd96, Redesign card
d40bfac1): the delete vocabulary is purely staged — board → trash,
trash → permanent (confirmed on no-git boards), Empty Trash for bulk.
Gone: File ▸ Delete Immediately (⌥⌘⌫) and its validation, both
⌥-alternate context rows (card + the permanently-disabled lane row),
the VO custom action, BoardStore.deleteImmediately,
TrashModel.canDeleteImmediately, TrashConfirmations' .purge action
(zero surviving callers — trash-side Delete always used
.deleteTrashCards), and the pinning tests. purgePrompt drops its
now-single-purpose container parameter (.trash is the only surviving
caller). BoardWriter.purgeItem survives — create-undo rollback still
needs it — with its comment rewritten. README's trash paragraph drops
the ⌥⌘⌫ sentence.

The other 2026-07-30 rulings (2ec2c95 registry freshness stamp,
c741b02 unified-log-as-coerce-consumer) required no code changes —
already conformant.

Both schemes 1844 tests / 318 suites green.

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

Kanban/UI/Board/BoardView.swift

@@ -452,8 +452,7 @@ struct BoardView: View {
                 slotWidth: slotWidth,
                 drops: dropContext,
                 marquee: marqueeControl,
-                openCard: openCard,
-                confirmations: confirmations
+                openCard: openCard
             )
             .frame(width: resizing ? resize.liveWidth : slotWidth, alignment: .leading)
         }
@@ -679,11 +678,11 @@ struct BoardView: View {
     /// Inert while an inline editor is open, like every grammar key: the field owns ⌫ as backspace,
     /// and a stray one reaching the board mid-edit would delete the item being renamed.
     private func handleDelete(_ press: KeyPress) -> KeyPress.Result {
-        // **Plain ⌫, spelled out.** The modified chords belong to the menu — ⌘⌫ (Delete), ⌥⌘⌫
-        // (Delete Immediately), ⇧⌘⌫ (Empty Trash…) — and AppKit routes a key equivalent to the
-        // menu before the view sees it. But ⌥⌫ and ⌃⌫ are nobody's key equivalent, and a fall-through
-        // that deleted the selection on a mistyped text-editing chord would be exactly the kind of
-        // accident 04-interactions.md's fixed grammar is careful to avoid.
+        // **Plain ⌫, spelled out.** The modified chords belong to the menu — ⌘⌫ (Delete), ⇧⌘⌫
+        // (Empty Trash…) — and AppKit routes a key equivalent to the menu before the view sees it.
+        // But ⌥⌫ and ⌃⌫ are nobody's key equivalent, and a fall-through that deleted the selection on
+        // a mistyped text-editing chord would be exactly the kind of accident 04-interactions.md's
+        // fixed grammar is careful to avoid.
         guard press.modifiers.intersection([.command, .option, .control, .shift]).isEmpty else {
             return .ignored
         }