feat(editor): left info panel + 3-col layout per handoff prototype

Handoff prototype design/compact.html показывает editor как 3-col layout:
[Sidebar 220 (global nav)] [InfoPanel 220 (dict metadata)] [main content].
Текущая implementation была 2-col (nav + everything).

NEW src/components/editor/EditorInfoPanel.tsx:
  - Scope badge (PUBLIC/INTERNAL/RESTRICTED) — top
  - ОПИСАНИЕ section — caption + dict.description body
  - Metadata 2x2 grid: Bundle / Версия / Записей / Локали
    (mono text-ink-2, cap labels)
  - СВЯЗИ section с двумя группами:
    → ссылается  outgoing FK list (name links к /dictionaries/$name)
    ← используют incoming refBy list (deduplicated sourceDict names)
  - sticky lg:top-2 self-start чтобы panel оставалась видна при scroll
  - lg:max-h-[calc(100vh-7rem)] overflow-y-auto если metadata высокий

src/routes/dictionaries.$name.tsx:
  - Обернул содержимое (banner + tabs + tab content) в:
    <div className='grid grid-cols-1 lg:grid-cols-[220px_1fr] gap-4 lg:gap-6'>
      <EditorInfoPanel ... />
      <div>{banner + tabs + content}</div>
    </div>
  - На <lg переключается в stacked (info above content) — single column
    благодаря grid-cols-1.

PageHeader остаётся выше grid (full-width breadcrumb + title + actions).
Action buttons (AOI / Time-travel / Schema edit / Создать) живут в
PageHeader.actions slot — handoff prototype показывает их в info panel,
но рядом с title лучше discoverable. Может уйти в info panel в future
refactor.

Tests: 116 pass. TS strict clean.

ordinis-admin-ui/src/components/editor/EditorInfoPanel.tsx

@@ -0,0 +1,164 @@
+import { useMemo } from 'react'
+import { Link } from '@tanstack/react-router'
+import { useTranslation } from 'react-i18next'
+import { Badge } from '@/ui'
+import { useDictionaryDependents } from '@/api/queries'
+import type { DictionaryDetail } from '@/api/client'
+
+/**
+ * EditorInfoPanel — left rail с dict metadata per handoff prototype Screen 2.
+ *
+ * <p>Содержимое (top → bottom):
+ * <ul>
+ *   <li>Scope badge (PUBLIC/INTERNAL/RESTRICTED)</li>
+ *   <li>ОПИСАНИЕ caption + description text</li>
+ *   <li>BUNDLE / ВЕРСИЯ / ЗАПИСЕЙ / ЛОКАЛИ metadata grid</li>
+ *   <li>СВЯЗИ — → ссылается (outgoing FK names) + ← используют (incoming dict names)</li>
+ * </ul>
+ *
+ * <p>Action buttons (Экспорт / Time-travel) идут в PageHeader actions slot,
+ * не в info panel — handoff prototype показывает им в info panel но семантика
+ * редизайна: actions около title для discoverability.
+ */
+export type EditorInfoPanelProps = {
+  detail: DictionaryDetail
+  recordCount: number
+}
+
+export function EditorInfoPanel({ detail, recordCount }: EditorInfoPanelProps) {
+  const { t } = useTranslation()
+  const { data: refByRaw } = useDictionaryDependents(detail.name)
+
+  const outgoingNames = useMemo(() => extractOutgoingFk(detail.schemaJson), [detail.schemaJson])
+  const incomingNames = useMemo(() => {
+    const seen = new Set<string>()
+    for (const dep of refByRaw ?? []) seen.add(dep.sourceDict)
+    return Array.from(seen).sort()
+  }, [refByRaw])
+
+  return (
+    <aside className="lg:sticky lg:top-2 self-start space-y-4 lg:max-h-[calc(100vh-7rem)] lg:overflow-y-auto pr-2">
+      {/* Scope badge — top of panel */}
+      <Badge variant="info">{detail.scope}</Badge>
+
+      {/* Description */}
+      {detail.description && (
+        <Section label={t('editor.info.description', { defaultValue: 'Описание' })}>
+          <p className="text-body text-ink-2 leading-relaxed">{detail.description}</p>
+        </Section>
+      )}
+
+      {/* Metadata grid */}
+      <div className="grid grid-cols-2 gap-x-3 gap-y-3">
+        <MetaCell label={t('editor.info.bundle', { defaultValue: 'Bundle' })}>
+          <span className="text-mono text-ink-2">{detail.bundle}</span>
+        </MetaCell>
+        <MetaCell label={t('editor.info.version', { defaultValue: 'Версия' })}>
+          <span className="text-mono text-ink-2">v{detail.schemaVersion}</span>
+        </MetaCell>
+        <MetaCell label={t('editor.info.records', { defaultValue: 'Записей' })}>
+          <span className="text-mono text-ink-2 tabular-nums">{recordCount}</span>
+        </MetaCell>
+        <MetaCell label={t('editor.info.locales', { defaultValue: 'Локали' })}>
+          <span className="text-mono text-ink-2">{detail.supportedLocales.join(', ')}</span>
+        </MetaCell>
+      </div>
+
+      {/* Relations */}
+      {(outgoingNames.length > 0 || incomingNames.length > 0) && (
+        <Section
+          label={t('editor.info.relations', {
+            defaultValue: 'Связи',
+            count: outgoingNames.length + incomingNames.length,
+          })}
+        >
+          {outgoingNames.length > 0 && (
+            <div className="space-y-1.5 mb-3">
+              <div className="text-cap text-mute">
+                → {t('editor.info.outgoing', { defaultValue: 'ссылается' })}
+              </div>
+              <ul className="space-y-0.5">
+                {outgoingNames.map((name) => (
+                  <li key={name}>
+                    <Link
+                      to="/dictionaries/$name"
+                      params={{ name }}
+                      className="text-mono text-accent hover:underline"
+                    >
+                      {name}
+                    </Link>
+                  </li>
+                ))}
+              </ul>
+            </div>
+          )}
+          {incomingNames.length > 0 && (
+            <div className="space-y-1.5">
+              <div className="text-cap text-mute">
+                ← {t('editor.info.incoming', { defaultValue: 'используют' })}
+              </div>
+              <ul className="space-y-0.5">
+                {incomingNames.map((name) => (
+                  <li key={name}>
+                    <Link
+                      to="/dictionaries/$name"
+                      params={{ name }}
+                      className="text-mono text-accent hover:underline"
+                    >
+                      {name}
+                    </Link>
+                  </li>
+                ))}
+              </ul>
+            </div>
+          )}
+        </Section>
+      )}
+    </aside>
+  )
+}
+
+function Section({
+  label,
+  children,
+}: {
+  label: React.ReactNode
+  children: React.ReactNode
+}) {
+  return (
+    <div className="space-y-1.5">
+      <div className="text-cap text-mute">{label}</div>
+      {children}
+    </div>
+  )
+}
+
+function MetaCell({
+  label,
+  children,
+}: {
+  label: React.ReactNode
+  children: React.ReactNode
+}) {
+  return (
+    <div className="space-y-1">
+      <div className="text-cap text-mute">{label}</div>
+      <div>{children}</div>
+    </div>
+  )
+}
+
+const extractOutgoingFk = (
+  schema: import('@/api/client').JsonSchema | undefined,
+): string[] => {
+  if (!schema?.properties) return []
+  const targets = new Set<string>()
+  for (const prop of Object.values(schema.properties)) {
+    const ref = prop['x-references']
+    if (typeof ref === 'string' && ref.length > 0) {
+      const [target] = ref.split('.')
+      if (target) targets.add(target)
+    }
+  }
+  return Array.from(targets).sort()
+}

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

@@ -42,6 +42,7 @@ import { CascadeConfirmDialog } from '@/components/lineage/CascadeConfirmDialog'
 import { RecordHistoryDrawer } from '@/components/record/RecordHistoryDrawer'
 import { RecordDrawer } from '@/components/record/RecordDrawer'
 import { WorkflowBanner } from '@/components/editor/WorkflowBanner'
+import { EditorInfoPanel } from '@/components/editor/EditorInfoPanel'
 import { AoiPickerDialog, type AoiResult } from '@/components/geo/AoiPickerDialog'
 import { TimeTravelPicker } from '@/components/timetravel/TimeTravelPicker'
 import { nowIsoLocal } from '@/lib/dates'
@@ -621,14 +622,22 @@ function DictionaryDetail() {
         }
       />
 
+      {/* 3-col layout per handoff prototype design/compact.html:
+          [Sidebar (220px global)] [InfoPanel 220px] [main content]
+          Info panel — sticky слева с dict metadata + relations.
+          На <lg viewport schedule переключается в stacked (info above content). */}
+      <div className="grid grid-cols-1 lg:grid-cols-[220px_1fr] gap-4 lg:gap-6 mt-2">
+        {detailQuery.data && (
+          <EditorInfoPanel detail={detailQuery.data} recordCount={totalRecords} />
+        )}
+
+        <div className="min-w-0 space-y-4">
           {/* WorkflowBanner — status (live/review/draft) above tab bar per handoff Screen 2. */}
           {detailQuery.data && (
             <WorkflowBanner detail={detailQuery.data} pendingCount={pendingByKey.size} />
           )}
 
-      {/* Editor tabs per handoff Stage 3.4:
-          Records | Relations | Fields | JSON | Events | History.
-          URL-synced через ?tab=. Default — records (records table + filters). */}
+          {/* Editor tabs per handoff Stage 3.4 */}
           {detailQuery.data && (
         <EditorTabBar
           active={urlSearch.tab ?? 'records'}
@@ -945,6 +954,9 @@ function DictionaryDetail() {
       </>
       )}
       {/* === end records tab content === */}
+        </div>
+      </div>
+      {/* === end 3-col grid === */}
 
       <RecordDrawer
         open={edit.kind === 'create' || edit.kind === 'edit'}