Retire Tombstone from 11's ⌫ row; give Select All its trash clause

Two stale rows left by the trash rewrites: the ⌫ grammar row now names Delete staged by place instead of the retired tombstone model, and Select All carries 04's container-boundary rule.

Board: Minor card cb3bc015 → Resolved.

Claude-Session: https://claude.ai/code/session_01CqjXB7ASoWtbyoGod68k97

DESIGN/11-command-nexus.md

@@ -35,7 +35,7 @@ The single source of truth for **every command and action the app can perform**
 | File | Close | ⌘W | Any window; flushes per 02 ▸ Windows |
 | Edit | Undo / Redo (M−) | ⌘Z / ⇧⌘Z | Focus-routed (06 ▸ Undo routing): text undo in a focused editor, git undo otherwise; git undo disabled on no-git and repo-nested boards, during 06's abnormal-state pause (detached HEAD, in-progress merge/rebase), and under the read-only lock (02) |
 | Edit | Cut / Copy / Paste | ⌘X / ⌘C / ⌘V | Board window: cards and lanes (cards-XOR-lanes selections; lane paste lands after the anchor lane — 04 ▸ Clipboard; on a zero-lane board only a lane payload pastes — 04 ▸ ⌘N target rule); in the trash, ⌘C copies out and ⌘X/⌘V is the keyboard restore path (resettled 2026-07-28 — 04 ▸ The trash); paste never targets the trash; text editors: standard text clipboard |
-| Edit | Select All | ⌘A | Board: all visible live cards (filter-respecting); text editors: the text |
+| Edit | Select All | ⌘A | Board: all visible cards on the active board side (filter-respecting); on the active trash side it selects the trash — the container boundary decides which "all" is meant, and the kind rule keeps trash selections homogeneous (04 ▸ The trash); text editors: the text |
 | Edit | Find | ⌘F | Board window: board search (04 ▸ Search); card window: find-in-text (05) |
 | Edit | Find Next / Find Previous | ⌘G / ⇧⌘G | Card window: the find bar's stepping; disabled in the board window — board search is a live filter, not a cursor. **Use Selection for Find (⌘E) is deliberately absent**: the chord belongs to View ▸ Edit Body, which outranks the text view's binding; a user who wants it back remaps Edit Body system-natively |
 | Board | Open Card | ⌘↩ | Board window, sole selected live card; during an inline title edit (placeholder or rename), commits it and opens — the one board command enabled mid-edit (04 ▸ Grammar) |
@@ -62,7 +62,7 @@ All board grammar keys are inert while a title editor is focused, and menu dispa
 | Return | Board, lane selected | Create card at its bottom (placeholder; Return commits and re-selects the lane) |
 | Return | Board, sole selected card | Inline rename; committing empty removes `title`; inert on multi-card selections |
 | Escape | Board window | One layer per press: abandon editor, else clear search (focus to board), else deselect |
-| ⌫ | Board, live selection | Tombstone — plain-key synonym of File ▸ Delete, kept grammar so no second "Delete" title exists (04) |
+| ⌫ | Board, any selection | Delete, staged by place — plain-key synonym of File ▸ Delete (board side moves to `.trash/`, trash side deletes permanently with 03's confirm), kept grammar so no second "Delete" title exists (04) |
 | Return | Card window, Preview | Enter Edit |
 | Escape | Card window, Edit | Return to Preview |
 | Return | Card window, title field | Commit title, focus into body |