feat(editor): keyboard shortcuts j/k/Enter/n per handoff Screen 2

Handoff line 438: 'Pressing j/k moves selected row; Enter opens drawer;
Esc closes; n opens new-record drawer; / focuses search.'

Implementation:
  - rowCursor state — index в visibleRecords (-1 = no focus)
  - j или ArrowDown → cursor++ (clamped)
  - k или ArrowUp → cursor-- (clamped)
  - Enter → setEdit({kind:'edit', record}) когда cursor valid
  - n → setEdit({kind:'create'}) когда canMutate
  - Esc — handled Radix Dialog natively через RecordDrawer
  - / — handled TopBar (⌘K equivalent, focuses global search input)

Guards:
  - Skip когда target inside input/textarea/contentEditable (no conflict с typing)
  - Skip когда drawer/modal open (edit.kind !== 'closed' — focus в portal)
  - Cursor reset на page/filter change (stale index безопасности)

Visual: active row получает bg-accent-bg/40 outline accent для clarity.

ordinis-admin-ui/src/routes/dictionaries.$name.tsx

@@ -331,6 +331,48 @@ function DictionaryDetail() {
     ? 'indeterminate'
     : allVisibleSelected
 
+  // === Keyboard shortcuts per handoff Screen 2 line 438 ===
+  // j/k — move row cursor up/down
+  // Enter — open drawer для cursor row
+  // Esc — close drawer (handled Radix natively)
+  // n — open new-record drawer
+  // / — focus search (handled TopBar ⌘K shortcut; tab-style / focuses search)
+  //
+  // Cursor — index в visibleRecords. -1 когда нет focus (initial state).
+  const [rowCursor, setRowCursor] = useState(-1)
+  useEffect(() => {
+    const handler = (e: KeyboardEvent) => {
+      const target = e.target as HTMLElement
+      // Skip когда юзер в textarea/input — не мешаем typing.
+      if (target && (target.tagName === 'INPUT' || target.tagName === 'TEXTAREA')) return
+      if (target && target.isContentEditable) return
+      // Skip когда drawer / modal открыт (focus inside Radix portal).
+      if (edit.kind !== 'closed') return
+      // Skip если другие routes — ловим только на /dictionaries/$name тут.
+
+      if (e.key === 'j' || e.key === 'ArrowDown') {
+        e.preventDefault()
+        setRowCursor((c) => Math.min(visibleRecords.length - 1, c + 1))
+      } else if (e.key === 'k' || e.key === 'ArrowUp') {
+        e.preventDefault()
+        setRowCursor((c) => Math.max(0, c - 1))
+      } else if (e.key === 'Enter' && rowCursor >= 0 && rowCursor < visibleRecords.length) {
+        e.preventDefault()
+        setEdit({ kind: 'edit', record: visibleRecords[rowCursor] })
+      } else if (e.key === 'n' && canMutate) {
+        e.preventDefault()
+        setEdit({ kind: 'create' })
+      }
+    }
+    window.addEventListener('keydown', handler)
+    return () => window.removeEventListener('keydown', handler)
+  }, [visibleRecords, rowCursor, edit.kind, canMutate])
+
+  // Reset cursor когда visibleRecords меняется (filter, page).
+  useEffect(() => {
+    setRowCursor(-1)
+  }, [page, search, scopeFilter, aoi])
+
   const toggleSelect = (key: string) => {
     setSelection((prev) => {
       const next = new Set(prev)
@@ -790,8 +832,12 @@ function DictionaryDetail() {
                     </TableRow>
                   </TableHead>
                   <TableBody>
-                  {visibleRecords.map((r) => (
-                <TableRow key={r.id} data-selected={selection.has(r.businessKey)}>
+                  {visibleRecords.map((r, idx) => (
+                <TableRow
+                  key={r.id}
+                  data-selected={selection.has(r.businessKey)}
+                  className={rowCursor === idx ? 'bg-accent-bg/40 outline outline-1 outline-accent/30' : undefined}
+                >
                   {canMutate && (
                     <TableCell>
                       <Checkbox