feat(ai): Phase 1 step 3-6 — LLM adapter + per-field AI suggest endpoint + UI

Approach C upgrade на templates foundation (!233). Admin может попросить AI
предложить новое поле — system prompt force'ит structural JSON Schema
fragment, admin review через accept/edit/reject. Bitemporal draft workflow
unchanged downstream.

## Backend
- `LlmAdapter` — OpenAI-compatible /v1/chat/completions client (Ollama,
  vLLM, OpenAI). Bean conditional на ordinis.ai.enabled=true.
- `AiSchemaService` — system prompt + 3 few-shot examples, JSON output
  parsing (с markdown fence stripping), validation (fieldName snake_case).
  In-memory circuit breaker: 10 fails в 60s → open 5 min.
- `AiSchemaController`:
  - GET /api/v1/ai/info → 200 (enabled) / 404 (disabled). Frontend probe.
  - POST /api/v1/ai/suggest-field → suggestion. Per-IP rate limit 30/min.
- All bean-conditional: ordinis.ai.enabled=false → controllers нет →
  endpoints 404 → frontend hides AI buttons automatically.

## Frontend
- `useAiFeatureAvailable` query — probes /ai/info, cache 5 min
- `useAiSuggestField` mutation — 30s timeout (LLM может быть slow)
- `AiFieldSuggestPanel` component — inline expandable: prompt → preview →
  accept/retry/reject. Error handling per HTTP status (503/429/422/502/404).
- DictionaryEditorDialog: AI toggle visible на schema tab когда
  aiAvailable=true. Accept wraps suggestion в mini-schema → parseSchemaJson
  (reuse existing kind-inference) → push в properties (overwrite если
  duplicate fieldName).
- i18n RU + EN

## Config
- application.yml: ordinis.ai.{enabled,endpoint,model,bearer-token,
  timeout-seconds}
- Helm writer.yaml: ORDINIS_AI_* env vars, optional secretRef для bearer
- values.yaml: ai.{enabled,endpoint,model,timeoutSeconds,bearerTokenSecretRef}
  defaults disabled

Pair с infra MR — values-staging enables AI с vortex.nstart.cloud Ollama
serving qwen2.5:7b.

ordinis-admin-ui/src/components/schema/DictionaryEditorDialog.tsx

@@ -16,10 +16,16 @@ import {
   type TabItem,
 } from '@/ui'
 import { useCreateDictionary, useUpdateDictionary } from '@/api/mutations'
-import { dictionaryDetailQuery, useDictionaries } from '@/api/queries'
+import {
+  dictionaryDetailQuery,
+  useAiFeatureAvailable,
+  useDictionaries,
+} from '@/api/queries'
 import type { CreateDictionaryRequest, DataScope, DictionaryDetail } from '@/api/client'
 import { SchemaBuilder } from './SchemaBuilder'
 import { TemplatePicker } from './TemplatePicker'
+import { AiFieldSuggestPanel } from './AiFieldSuggestPanel'
+import { SparkleIcon } from '@phosphor-icons/react'
 import { EventsPreviewTab } from './EventsPreviewTab'
 import { CreateSchemaDraftModal } from '@/components/workflow/CreateSchemaDraftModal'
 import {
@@ -127,6 +133,9 @@ export const DictionaryEditorDialog = ({ open, mode, onClose, onSuccess }: Props
    *  into the schema-draft modal with the maker's in-progress schemaJson
    *  pre-loaded — no retyping. */
   const [draftHandoffOpen, setDraftHandoffOpen] = useState(false)
+  /** AI Schema Assist (Phase 1 step 6): per-field LLM suggest panel toggle. */
+  const [aiPanelOpen, setAiPanelOpen] = useState(false)
+  const aiAvailable = useAiFeatureAvailable()
 
   // Template (только в create-mode): admin выбирает существующий dict,
   // его schema + locale + scope копируются. Имя остаётся пустым (admin
@@ -438,6 +447,51 @@ export const DictionaryEditorDialog = ({ open, mode, onClose, onSuccess }: Props
               />
             </div>
           )}
+          {/* AI Schema Assist Phase 1 step 6: per-field LLM suggest panel.
+            * Toggle hidden когда ordinis.ai.enabled=false на бэкенде (probe
+            * via /api/v1/ai/info → 404 = hide). */}
+          {aiAvailable.data && (
+            <div className="mb-4">
+              {!aiPanelOpen ? (
+                <button
+                  type="button"
+                  onClick={() => setAiPanelOpen(true)}
+                  className="inline-flex items-center gap-1.5 text-cell text-accent hover:underline"
+                >
+                  <SparkleIcon size={14} weight="fill" />
+                  {t('aiSuggest.openButton', { defaultValue: 'AI: добавить поле' })}
+                </button>
+              ) : (
+                <AiFieldSuggestPanel
+                  existingSchema={schemaJson as Record<string, unknown>}
+                  onClose={() => setAiPanelOpen(false)}
+                  onAccept={(suggestion) => {
+                    // Wrap suggestion в mini-schema → parse через existing
+                    // parseSchemaJson → получаем PropertyDef. Reuse уже
+                    // tested kind-inference logic.
+                    const wrapper = {
+                      type: 'object',
+                      properties: { [suggestion.fieldName]: suggestion.schema },
+                    }
+                    const parsed = parseSchemaJson(wrapper as never)
+                    if (parsed.properties.length > 0) {
+                      // Avoid duplicate field name — overwrite если уже есть.
+                      const existingIdx = properties.findIndex(
+                        (p) => p.name === suggestion.fieldName,
+                      )
+                      if (existingIdx >= 0) {
+                        const next = [...properties]
+                        next[existingIdx] = parsed.properties[0]
+                        setProperties(next)
+                      } else {
+                        setProperties([...properties, parsed.properties[0]])
+                      }
+                    }
+                  }}
+                />
+              )}
+            </div>
+          )}
           <SchemaBuilder properties={properties} onChange={setProperties} />
         </div>