diff --git a/frontend/src/canvas/ProblemsPanel.tsx b/frontend/src/canvas/ProblemsPanel.tsx
index 7f543d05..3d965f6b 100644
--- a/frontend/src/canvas/ProblemsPanel.tsx
+++ b/frontend/src/canvas/ProblemsPanel.tsx
@@ -13,7 +13,7 @@ import {
 import { PublishPreflightPane } from './PublishDialog'
 import { humanizeError } from '../lib/errors'
 import { formatShortcut } from '../lib/keys'
-import { PUBLISH_FIX_TEXT, UPGRADE_TEXT } from '../lib/terms'
+import { PROVIDER_REF_TEXT, PUBLISH_FIX_TEXT, UPGRADE_TEXT } from '../lib/terms'
 import { useCatalog } from '../store/catalog'
 import { EDIT_LOCK_TEXT, upgradeUnsaved, useEditLock, useStudio, type UpgradeFlow } from '../store/studio'
 import { Spinner, useRadioGroup } from '../components/ui'
@@ -232,7 +232,7 @@ function ProblemRow({ problem: p, active, onLocate, onDeleteEdge }: {
               aria-label={err ? '错误' : '提示'} />
         <span className={clsx('min-w-0 flex-1', err ? 'text-fg' : 'text-dim')}>{p.message}</span>
         {where && (
-          <span className="flex shrink-0 items-center gap-0.5 text-faint">
+          <span className="flex shrink-0 items-center gap-0.5 text-faint" data-problem-field="">
             <CornerDownRight size={9} aria-hidden />{where}
           </span>
         )}
@@ -615,13 +615,17 @@ function UpgradeValue({ value, field, nameOf, className, ...data }: {
   )
 }
 
-const SUB_LABEL: Record<string, string> = { condition: '的条件', key: '的标识', tools: '的工具', system: '的系统提示' }
+const SUB_LABEL: Record<string, string> = {
+  condition: '的条件', key: '的标识', tools: '的工具', system: '的系统提示', provider: PROVIDER_REF_TEXT.memberField,
+}
+/** 节点定义里没有、问题却会落上去的字段：点名的模型接入（多数节点的检查器里没有这一栏）。不写的话露出键名 */
+const FIELD_FALLBACK: Record<string, string> = { provider: PROVIDER_REF_TEXT.field }
 
 function fieldLabel(field: FieldRef | null | undefined, type?: string, config?: Record<string, any>): string {
   if (!field) return ''
   if (field.key === 'label') return '节点名称'
   const def = type ? NODE_DEFS[type as keyof typeof NODE_DEFS] : undefined
-  const base = def?.fields.find((f) => f.key === field.key)?.label ?? field.key
+  const base = def?.fields.find((f) => f.key === field.key)?.label ?? FIELD_FALLBACK[field.key] ?? field.key
   if (field.index == null) return base
   const sub = (field.sub && SUB_LABEL[field.sub]) || ''
   // 成员有名字就叫名字：「第 2 个成员」还得数，「成员 writer」一眼就知道是谁
diff --git a/frontend/src/canvas/PublishDialog.tsx b/frontend/src/canvas/PublishDialog.tsx
index 10b5a867..2ba3c3f8 100644
--- a/frontend/src/canvas/PublishDialog.tsx
+++ b/frontend/src/canvas/PublishDialog.tsx
@@ -272,12 +272,13 @@ const unsavedApply = (a: ApplyState) => a.status === 'failed' || (a.status === '
 const unsavedFix = (pf: PreflightState) => !!pf.apply && unsavedApply(pf.apply)
 
 /**
- * 节点 id → 名字和类型。跟着 issues 换新（改名、改配置之后校验都会重跑），不订阅 nodes：
- * 问题面板开着时拖一下节点，这一整块不必跟着每帧重渲染
+ * 节点 id → 名字、类型和配置。跟着 issues 换新（改名、改配置之后校验都会重跑），不订阅 nodes：
+ * 问题面板开着时拖一下节点，这一整块不必跟着每帧重渲染。配置给修复预览认列表里的那一项（成员「分析师」）
  */
-function useNodeLookup(): (id: string) => { label: string; type: string } | undefined {
+function useNodeLookup(): (id: string) => { label: string; type: string; config?: Record<string, any> } | undefined {
   const tick = useStudio((s) => s.issues)
-  const map = useMemo(() => new Map(useStudio.getState().nodes.map((n) => [n.id, { label: n.data.label, type: n.data.nodeType }])),
+  const map = useMemo(() => new Map(useStudio.getState().nodes.map((n) => [n.id,
+    { label: n.data.label, type: n.data.nodeType, config: n.data.config }])),
     // eslint-disable-next-line react-hooks/exhaustive-deps
     [tick])
   return useCallback((id: string) => map.get(id), [map])
@@ -544,7 +545,8 @@ export function Preflight({ pf, gate, onLocate, stale }: {
       )}
 
       {pf.preview && <FixPreview pf={pf} labelOf={labelOf} nameOf={nameOf}
-                                 typeOf={(id) => (id ? nodeOf(id)?.type : undefined)} />}
+                                 typeOf={(id) => (id ? nodeOf(id)?.type : undefined)}
+                                 configOf={(id) => (id ? nodeOf(id)?.config : undefined)} />}
       {/* 修复落到画布上却没存上，预览又已经收起了（换过等级）：「重试保存」照样得在 */}
       {pf.preview?.status !== 'ready' && unsavedFix(pf) && <SaveTrouble pf={pf} />}
 
@@ -656,9 +658,11 @@ function FixControl({ fix, pf }: { fix: PublishFix; pf: PreflightState }) {
 }
 
 /** 修复预览：逐项「节点 · 字段：原值 → 新值」，没采用的写原因，Copilot 的问题原样摆出来 */
-function FixPreview({ pf, labelOf, nameOf, typeOf }: {
+function FixPreview({ pf, labelOf, nameOf, typeOf, configOf }: {
   pf: PreflightState; labelOf: (id?: string | null) => string; nameOf: NodeNameOf
   typeOf: (id?: string | null) => string | undefined
+  /** 列表里的某一项（agents[0]、fields[1]）写那一项的名字，不写「第 1 项」 */
+  configOf?: (id?: string | null) => Record<string, any> | undefined
 }) {
   const dirty = useStudio((s) => s.dirty)
   const p = pf.preview!
@@ -703,7 +707,7 @@ function FixPreview({ pf, labelOf, nameOf, typeOf }: {
         <ul className="space-y-1" data-fix-changes="">
           {result.changes.map((c, i) => {
             const where = c.node_title || labelOf(c.node_id) || T.whole
-            const field = fixFieldLabel(c.field, typeOf(c.node_id))
+            const field = fixFieldLabel(c.field, typeOf(c.node_id), configOf?.(c.node_id))
             return (
               <li key={i} className="leading-snug" data-fix-change={c.fix_id}>
                 <span className="[overflow-wrap:anywhere]">
diff --git a/frontend/src/canvas/issues.ts b/frontend/src/canvas/issues.ts
index 316d8123..f8ed2b64 100644
--- a/frontend/src/canvas/issues.ts
+++ b/frontend/src/canvas/issues.ts
@@ -11,7 +11,9 @@
  * 那一栏，定位落到工具上（见 toolBindingOf）。
  */
 import { ApiError } from '../api/client'
-import { APPROVAL_POLICY_LABEL, JUDGE_FIELD_LABEL, JUDGE_ON_UNSUPPORTED_LABEL, UPGRADE_TEXT, nodeTypeLabel } from '../lib/terms'
+import {
+  APPROVAL_POLICY_LABEL, JUDGE_FIELD_LABEL, JUDGE_ON_UNSUPPORTED_LABEL, PROVIDER_REF_TEXT, UPGRADE_TEXT, nodeTypeLabel,
+} from '../lib/terms'
 import { NODE_DEFS } from './nodeDefs'
 import type { FlowNode } from '../store/studio'
 import type {
@@ -244,6 +246,12 @@ function normalizeIssue(raw: any): ValidationIssue | null {
   }
 }
 
+/**
+ * 点名的模型接入不存在或已停用（后端 engine/provider_refs.py）。一处一条问题、一条修复：同一个协作节点上自己的接入和
+ * 成员的接入是两处，合并、找修复都要连字段一起认
+ */
+export const isProviderRefCode = (code?: string | null): boolean => code === 'provider.missing' || code === 'provider.disabled'
+
 function normalizeFix(raw: any): PublishFix | null {
   if (!raw || typeof raw !== 'object' || typeof raw.id !== 'string' || !raw.id) return null
   const kind = raw.kind === 'choice' || raw.kind === 'assist' ? raw.kind : raw.kind === 'auto' ? 'auto' : null
@@ -259,6 +267,7 @@ function normalizeFix(raw: any): PublishFix | null {
     code: asText(raw.code),
     kind,
     node_id: raw.node_id ?? null,
+    ...(typeof raw.field === 'string' && raw.field ? { field: raw.field } : {}),
     label: asText(raw.label) || raw.id,
     preview: raw.preview && typeof raw.preview === 'object' ? raw.preview : null,
     options,
@@ -318,7 +327,10 @@ export function fixFor(issue: ValidationIssue, fixes: PublishFix[]): PublishFix
   if (issue.fix) return fixes.find((f) => f.id === issue.fix)
   if (!issue.code) return undefined
   const same = fixes.filter((f) => f.code === issue.code)
-  const exact = same.find((f) => (f.node_id ?? null) === (issue.node_id ?? null))
+  // 点名的接入一处一条修复：同一节点上的几处按字段认
+  const exact = (isProviderRefCode(issue.code)
+    ? same.find((f) => (f.node_id ?? null) === (issue.node_id ?? null) && (f.field ?? null) === (issue.field ?? null))
+    : undefined) ?? same.find((f) => (f.node_id ?? null) === (issue.node_id ?? null))
   if (exact) return exact
   return issue.node_id == null ? same[0] : same.find((f) => f.node_id == null)
 }
@@ -326,13 +338,16 @@ export function fixFor(issue: ValidationIssue, fixes: PublishFix[]): PublishFix
 /**
  * 同一处问题只列一行：validate 和门禁常对同一处各报一条（同 code、同节点，说法不同），
  * 列两行就是两组一样的修复控件、「会被拦下 2 处」。合成的那一行取最重的级别、第一条 error 的说法，
- * 其余说法收进 others（悬停可见）。没有 code 的认不出是不是同一处，照原样各列一行
+ * 其余说法收进 others（悬停可见）。没有 code 的认不出是不是同一处，照原样各列一行。
+ * 点名的模型接入连字段一起认：协作节点自己的接入和成员的接入是两处问题、各有各的修复，不合成一行
  */
 export function mergeIssues(issues: ValidationIssue[]): { issue: ValidationIssue; others: string[] }[] {
   const out: { issue: ValidationIssue; others: string[] }[] = []
   const at = new Map<string, number>()
   for (const issue of issues) {
-    const key = issue.code ? `${issue.code}\u0000${issue.node_id ?? ''}` : null
+    const key = issue.code
+      ? `${issue.code}\u0000${issue.node_id ?? ''}${isProviderRefCode(issue.code) ? `\u0000${issue.field ?? ''}` : ''}`
+      : null
     const i = key != null ? at.get(key) : undefined
     if (i == null) {
       if (key != null) at.set(key, out.length)
@@ -382,11 +397,15 @@ const CONTRACT_KEYS: Record<string, string> = {
 /** 不在节点定义的字段表里、由检查器自己画的几项（子工作流钉的版本、升版处置），以及图级的全图默认 */
 const EXTRA_FIELDS: Record<string, string> = {
   workflow_version: '固定版本', upgrade_policy: '上游发布新版本时', defaults: '工作流默认设置',
+  // 多数节点的检查器里没有接入这一栏（只有双盲复算、反方审稿有），修复点名接入时照样要写得出叫法
+  provider: PROVIDER_REF_TEXT.field,
 }
 /** 点号后面那一段的叫法：契约里的键，全图默认里的审批策略，列表项里的名称、取值、表达式 */
 const SUB_KEYS: Record<string, string> = {
   ...CONTRACT_KEYS, approval: '审批策略', claims: '未附依据的结论句', on_uncited: '未附依据时',
   name: '名称', value: '取值', expression: '表达式',
+  // 点名的接入：成员的、全图默认里的（连同全图默认里结论句裁判的那一份）
+  provider: PROVIDER_REF_TEXT.field, model: PROVIDER_REF_TEXT.model, judge: PROVIDER_REF_TEXT.judge,
 }
 /** 契约 claims 的 on_uncited：没挂依据的结论句怎么算 */
 const ON_UNCITED_LABEL: Record<string, string> = {
diff --git a/frontend/src/lib/terms.ts b/frontend/src/lib/terms.ts
index 8ea7b9fb..7cd003a1 100644
--- a/frontend/src/lib/terms.ts
+++ b/frontend/src/lib/terms.ts
@@ -919,6 +919,26 @@ export const PUBLISH_FIX_TEXT = {
   whole: '整个工作流',
 } as const
 
+/**
+ * 点名的模型接入不存在或已停用（后端 providers/factory.named_provider、engine/provider_refs.py）。以前点名的接入不存在时
+ * 运行悄悄换成演示模型、点名停用的照常调用；现在运行照实报错，设置页、画布校验、发布前检查都提前说出来
+ */
+export const PROVIDER_REF_TEXT = {
+  /** 节点配置里 provider 这一项的叫法：多数节点的检查器里没有这一栏，问题面板、修复预览里照样要写得出来 */
+  field: '模型接入',
+  /** 协作成员、修复预览里点号后面那一段：「成员「分析师」的模型接入」「工作流默认设置 · 模型接入」 */
+  memberField: '的模型接入',
+  model: '模型',
+  judge: '结论句裁判',
+  /** 设置页那一格下面：存着的接入不存在、已停用时先说状态，再说这一项因此会怎样（各组自己的后果） */
+  missing: (name: string) => `模型接入「${name}」不存在`,
+  disabled: (name: string) => `模型接入「${name}」已停用`,
+  gateBroken: '门控模型无法调用，所有工具调用将转为人工审批',
+  judgeBroken: '裁判调用将失败，所有结论句记为未裁判',
+  // 和核查一组「不存在」那句（VERIFY_SETTING_TEXT.section.providerGone）同一个后果
+  verifyBroken: '核查调用将失败',
+} as const
+
 /**
  * 一键升级为可追溯结构（问题面板的快速修复、记录页的横幅）。和发布前修复同一套规矩：
  * 只出预览，人点「应用」才走现有的保存存成草稿；不发布
diff --git a/frontend/src/pages/SettingsPage.tsx b/frontend/src/pages/SettingsPage.tsx
index 61849480..fa0179de 100644
--- a/frontend/src/pages/SettingsPage.tsx
+++ b/frontend/src/pages/SettingsPage.tsx
@@ -5,7 +5,7 @@ import {
   AlertTriangle, Check, Cpu, Download, KeyRound, Monitor, Moon, Plug, Plus, Settings as SettingsIcon, Sun, X,
 } from 'lucide-react'
 import clsx from 'clsx'
-import { api } from '../api/client'
+import { ApiError, api } from '../api/client'
 import type { ProviderDraft } from '../api/client'
 import { modelOptions, providerOfModel, useCatalog, useOnReconnect } from '../store/catalog'
 import {
@@ -13,7 +13,7 @@ import {
   promptDialog, SectionBar, Skeleton, Spinner, TabPanel, Tabs, toast, useRadioGroup, useTabRoute,
 } from '../components/ui'
 import { setThemePref, useTheme } from '../components/CommandPalette'
-import { humanizeError } from '../lib/errors'
+import { errorMessage } from '../lib/errors'
 import { formatNumber, shortLabel } from '../lib/format'
 import { checkHealth, forgetHealth, healthFromServer, setHealth, useHealth } from '../lib/health'
 import type { HealthRecord } from '../lib/health'
@@ -22,9 +22,13 @@ import type { Provider } from '../types'
 import { normalizeTheme } from '../lib/theme'
 import { useLeaveGuard } from '../lib/leave'
 import { localActor, setLocalActor } from '../lib/actor'
-import { AGENT_GUARD_TEXT, JUDGE_SETTING_TEXT, TOOL_GATE_TEXT, VERIFY_SETTING_TEXT, judgeByModelText, judgeUnlimitedText } from '../lib/terms'
+import {
+  AGENT_GUARD_TEXT, JUDGE_SETTING_TEXT, PROVIDER_REF_TEXT, TOOL_GATE_TEXT, VERIFY_SETTING_TEXT, judgeByModelText, judgeUnlimitedText,
+} from '../lib/terms'
 import type { ThemePref } from '../lib/theme'
-import { VerifySection, verifyChanged, verifyDraftOf, verifyErrors, verifyLabels, verifyPayload, type VerifyDraft } from './VerifySettings'
+import {
+  ProviderOptions, VerifySection, verifyChanged, verifyDraftOf, verifyErrors, verifyLabels, verifyPayload, type VerifyDraft,
+} from './VerifySettings'
 
 // 提到模块级：tab 名同时是 URL 的最后一段，两处各写一份迟早对不上。
 // 数据源搬去了顶级的「数据」页（/data），/settings/datasources 跳过去
@@ -622,6 +626,8 @@ function PrefsTab() {
   const [saving, setSaving] = useState(false)
   const [savedFlash, setSavedFlash] = useState(0)
   const [saveError, setSaveError] = useState<unknown>(null)
+  // 服务端按项拒收（点名的模型接入不存在、已停用：422 带 field）：整句落到那一格下面，焦点移过去
+  const [fieldError, setFieldError] = useState<{ field: string; message: string } | null>(null)
 
   // 今天裁判花了多少：只读，放在每日上限旁边。老后端没有这个接口就不显示
   const loadSpend = () => api.settings.judgeSpend().then(setSpend, () => setSpend(null))
@@ -709,10 +715,12 @@ function PrefsTab() {
 
   const edit = (patch: Partial<typeof saved>) => {
     setSaveError(null)
+    setFieldError(null)
     setDraft({ ...cur, ...patch })
   }
   const editVerify = (patch: Partial<VerifyDraft>) => {
     setSaveError(null)
+    setFieldError(null)
     setVerifyDraft({ ...verifyCur, ...patch })
   }
 
@@ -724,6 +732,7 @@ function PrefsTab() {
     if (!values || !dirty || invalid) return
     setSaving(true)
     setSaveError(null)
+    setFieldError(null)
     const actor = cur.actor.trim()
     if (actor !== savedActor.current) {
       // 写不进去（隐私模式）时署名只在这一次会话里有效；setLocalActor 会通知导航底部的首字
@@ -775,6 +784,15 @@ function PrefsTab() {
       // 署名已经存上了：留在草稿里的只剩运行默认值，条上的计数跟着变少
       setDraft({ ...cur, actor })
       setSaveError(e)
+      const at = e instanceof ApiError && e.field ? PROVIDER_FIELD_IDS[e.field] : undefined
+      if (at) {
+        setFieldError({ field: (e as ApiError).field!, message: (e as ApiError).message })
+        requestAnimationFrame(() => {
+          const el = document.getElementById(at)
+          el?.scrollIntoView({ block: 'center' })
+          el?.focus()
+        })
+      }
     } finally {
       setSaving(false)
     }
@@ -783,16 +801,29 @@ function PrefsTab() {
   const scopeOptions = [...new Set(['default', ...scopes.map((s) => s.scope), cur.scope])]
   const collectionNames = collections.map((c) => c.collection)
   const collectionMissing = !collectionNames.includes(cur.collection)
+  /**
+   * 接入那一格下面的报错：服务端按这一项拒收的话照它的整句；否则存着（或选着）的接入不存在、已停用时说清这一项会怎样。
+   * 只在接入表取到了时判「不存在」：表还没取回来，什么都找不到
+   */
+  const providerError = (field: string, name: string, found: Provider | undefined, broken: string): string | undefined => {
+    if (fieldError?.field === field) return fieldError.message
+    if (!name || !providers.length) return undefined
+    if (!found) return `${PROVIDER_REF_TEXT.missing(name)}：${broken}`
+    return found.enabled ? undefined : `${PROVIDER_REF_TEXT.disabled(name)}：${broken}`
+  }
   // 门控模型留空时后端的挑法（resolve_provider）：第一个启用的真实接入，没有就第一个启用的
   const enabledProviders = providers.filter((p) => p.enabled)
   const defaultProvider = enabledProviders.find((p) => p.kind !== 'mock') ?? enabledProviders[0]
   const gateProvider = cur.gateProvider ? providers.find((p) => p.name === cur.gateProvider) : defaultProvider
   const gateProviderMissing = !!cur.gateProvider && providers.length > 0 && !gateProvider
+  // 点名的接入不存在、已停用都调不了（停用的以前照常调用，现在运行时照实报错）：两种都在这一格下面说
+  const gateProviderError = providerError('run.tool_gate_provider', cur.gateProvider, gateProvider, PROVIDER_REF_TEXT.gateBroken)
   const gateModels = (gateProvider?.models ?? []).map((m) => m.id)
   // 裁判模型的接入：接入和模型都留空时后端依次用 Copilot 的模型、默认接入（judge_model_spec）。只填了模型时
   // 这一级写了就整组用这一级，按模型名找接入（resolve_provider）——不再跟随 Copilot，留空那一项不能还叫「跟随 Copilot」
   const judgeProvider = cur.judgeProvider ? providers.find((p) => p.name === cur.judgeProvider) : undefined
   const judgeProviderMissing = !!cur.judgeProvider && providers.length > 0 && !judgeProvider
+  const judgeProviderError = providerError('judge.provider', cur.judgeProvider, judgeProvider, PROVIDER_REF_TEXT.judgeBroken)
   const judgeModelName = cur.judgeModel.trim()
   const judgeByModel = !cur.judgeProvider && !!judgeModelName
   // 裁判模型没有单独配置（接入、模型都留空）：后端依次用助手的模型、默认接入
@@ -895,22 +926,19 @@ function PrefsTab() {
               <div id="pref-gate-label" className="text-xs font-medium">{TOOL_GATE_TEXT.label}</div>
               <p id="pref-gate-hint" className="mb-2 mt-0.5 text-2xs leading-relaxed text-faint">{TOOL_GATE_TEXT.hint}</p>
               <div className="grid grid-cols-2 gap-3">
-                <Field label={TOOL_GATE_TEXT.provider} htmlFor="pref-gate-provider"
-                       error={gateProviderMissing ? `模型接入「${cur.gateProvider}」不存在：门控模型无法调用，所有工具调用将转为人工审批` : undefined}>
+                <Field label={TOOL_GATE_TEXT.provider} htmlFor="pref-gate-provider" error={gateProviderError}>
                   {(p) => (
                     <select {...p} className="field" value={cur.gateProvider} onChange={(e) => pickGateProvider(e.target.value)}>
                       <option value="">
                         {TOOL_GATE_TEXT.providerDefault}{defaultProvider ? `（当前为 ${defaultProvider.name}）` : ''}
                       </option>
                       {gateProviderMissing && <option value={cur.gateProvider}>{cur.gateProvider}（不存在）</option>}
-                      {providers.map((pv) => (
-                        <option key={pv.id} value={pv.name}>{pv.name}{pv.enabled ? '' : '（已停用）'}</option>
-                      ))}
+                      <ProviderOptions providers={providers} current={cur.gateProvider} />
                     </select>
                   )}
                 </Field>
                 <Field label={TOOL_GATE_TEXT.model} htmlFor="pref-gate-model"
-                       hint={gateProvider?.default_model ? `留空则使用 ${gateProvider.default_model}` : undefined}>
+                       hint={gateProvider?.enabled && gateProvider.default_model ? `留空则使用 ${gateProvider.default_model}` : undefined}>
                   {(p) => (
                     <>
                       <input {...p} className="field mono text-xs" value={cur.gateModel} list="pref-gate-models"
@@ -976,8 +1004,7 @@ function PrefsTab() {
                   <p id="pref-judge-model-hint" className="mb-2 mt-0.5 text-2xs leading-relaxed text-faint">{JUDGE_SETTING_TEXT.differ}</p>
                 )}
                 <div className="grid grid-cols-2 gap-3">
-                  <Field label={JUDGE_SETTING_TEXT.provider} htmlFor="pref-judge-provider"
-                         error={judgeProviderMissing ? `模型接入「${cur.judgeProvider}」不存在：裁判调用将失败，所有结论句记为未裁判` : undefined}
+                  <Field label={JUDGE_SETTING_TEXT.provider} htmlFor="pref-judge-provider" error={judgeProviderError}
                          hint={judgeByModelHint ? (
                            <span data-judge-by-model={judgeOwner ? (judgeOwner.enabled ? 'found' : 'disabled') : 'default'}
                                  style={judgeOwner?.enabled ? undefined : { color: 'var(--st-waiting)' }}>{judgeByModelHint}</span>
@@ -986,14 +1013,12 @@ function PrefsTab() {
                       <select {...p} className="field" value={cur.judgeProvider} onChange={(e) => pickJudgeProvider(e.target.value)}>
                         <option value="">{judgeByModel ? JUDGE_SETTING_TEXT.providerFromModel : JUDGE_SETTING_TEXT.providerDefault}</option>
                         {judgeProviderMissing && <option value={cur.judgeProvider}>{cur.judgeProvider}（不存在）</option>}
-                        {providers.map((pv) => (
-                          <option key={pv.id} value={pv.name}>{pv.name}{pv.enabled ? '' : '（已停用）'}</option>
-                        ))}
+                        <ProviderOptions providers={providers} current={cur.judgeProvider} />
                       </select>
                     )}
                   </Field>
                   <Field label={JUDGE_SETTING_TEXT.model} htmlFor="pref-judge-model"
-                         hint={judgeProvider?.default_model ? `留空则使用 ${judgeProvider.default_model}` : undefined}>
+                         hint={judgeProvider?.enabled && judgeProvider.default_model ? `留空则使用 ${judgeProvider.default_model}` : undefined}>
                     {(p) => (
                       <>
                         <input {...p} className="field mono text-xs" value={cur.judgeModel} list="pref-judge-models"
@@ -1048,7 +1073,8 @@ function PrefsTab() {
             </section>
           )}
 
-          {values.verify && <VerifySection cur={verifyCur} errors={verifyErrs} onEdit={editVerify} refresh={verifySaves} />}
+          {values.verify && <VerifySection cur={verifyCur} onEdit={editVerify} refresh={verifySaves}
+                                           errors={fieldError?.field === 'verify.provider' ? { ...verifyErrs, provider: fieldError.message } : verifyErrs} />}
         </>
       )}
 
@@ -1076,11 +1102,14 @@ function PrefsTab() {
                 </span>
               </span>
               {saveError != null && (
-                <span className="text-2xs text-[var(--err)]" role="alert">保存失败：{humanizeError(saveError).title}</span>
+                <span className="text-2xs text-[var(--err)]" role="alert" data-prefs-save-error="">
+                  {/* 连同原因：服务端的说明常是两三句，只留标题会把「请在……中启用它」这类下一步截掉 */}
+                  保存失败：{errorMessage(saveError)}
+                </span>
               )}
               <span className="flex-1" />
               <button className="btn btn-sm btn-ghost" disabled={saving}
-                      onClick={() => { setDraft(null); setVerifyDraft(null); setSaveError(null) }}>放弃</button>
+                      onClick={() => { setDraft(null); setVerifyDraft(null); setSaveError(null); setFieldError(null) }}>放弃</button>
               <button className="btn btn-sm btn-primary" disabled={saving || invalid}
                       title={guardInvalid ? '护栏设置中有无效值，请修正后再保存'
                         : judgeInvalid ? '证据裁判的上限有无效值，请修正后再保存'
@@ -1100,6 +1129,11 @@ function PrefsTab() {
   )
 }
 
+/** 服务端按项拒收时（422 带 field）那一项在页面上是哪个控件：点名的模型接入的三格 */
+const PROVIDER_FIELD_IDS: Record<string, string> = {
+  'run.tool_gate_provider': 'pref-gate-provider', 'judge.provider': 'pref-judge-provider', 'verify.provider': 'pref-verify-provider',
+}
+
 /** 裁判那一组在草稿里的键：它们改了才写 judge 一组 */
 const JUDGE_DRAFT = new Set<string>(['judgeProvider', 'judgeModel', 'jClaims', 'jCost', 'jTimeout', 'jClick', 'jDaily'])
 
diff --git a/frontend/src/pages/StudioPage.tsx b/frontend/src/pages/StudioPage.tsx
index cf4ea57d..69ff6850 100644
--- a/frontend/src/pages/StudioPage.tsx
+++ b/frontend/src/pages/StudioPage.tsx
@@ -78,6 +78,15 @@ function matches(e: KeyboardEvent, combo: string): boolean {
 /** 改图的快捷键。正式运行期间按了要说为什么没反应，不能安静地什么都不做 */
 const EDIT_SHORTCUTS = new Set<StudioShortcutId>(['undo', 'redo', 'paste', 'duplicate', 'layout'])
 
+/**
+ * 接入表的签名：只看校验用得上的（id、名称、启用与否）。画布校验会查节点点名的接入是不是不存在、已停用（后端
+ * engine/provider_refs.py），接入在设置里启用、停用、改名、删除之后，眼前的问题清单就过时了。记在模块里而不是
+ * 组件里：去设置页改完再回来，编排页是重新挂上的，要和离开前校验时的那份比
+ */
+let checkedProviders: string | null = null
+const providerSig = (providers: { id: string; name: string; enabled: boolean }[]) =>
+  providers.map((p) => `${p.id}\u0000${p.name}\u0000${p.enabled ? 1 : 0}`).join('\u0001')
+
 export function StudioPage() {
   const { workflowId } = useParams()
   const [params, setParams] = useSearchParams()
@@ -87,6 +96,8 @@ export function StudioPage() {
   const workflows = useCatalog((s) => s.workflows)
   const refresh = useCatalog((s) => s.refresh)
   const catalogLoaded = useCatalog((s) => s.loaded)
+  // 选签名（字符串）而不是整张表：目录每刷新一次表都是新数组，内容没变就不该重新校验
+  const providers = useCatalog((s) => providerSig(s.providers))
   const workflow = useStudio((s) => s.workflow)
   const dirty = useStudio((s) => s.dirty)
   // 只订阅数量，不订阅整个 nodes——后者每拖一下都会让整页重渲染
@@ -241,6 +252,15 @@ export function StudioPage() {
     resolve(workflowId)
   }, [workflowId, workflow, workflows, catalogLoaded, dirty, load, navigate, resolve, location.state])
 
+  // 接入表变了（在设置里启用、停用、改名、删除了接入）：画布上的问题清单可能已经过时，重新校验一次。
+  // 第一次拿到接入表时只记下来——打开画布本身就会校验，后端校验时读的是库里的接入表，不靠这里
+  useEffect(() => {
+    if (!catalogLoaded) return
+    const changed = checkedProviders !== null && checkedProviders !== providers
+    checkedProviders = providers
+    if (changed && useStudio.getState().nodes.length) void useStudio.getState().validate()
+  }, [providers, catalogLoaded])
+
   // 断开期间没取到的那张，连上之后再取一次。有未保存的改动就不动它
   useOnReconnect(() => {
     if (loadError && loadError.id === workflowId && !useStudio.getState().dirty) resolve(loadError.id)
diff --git a/frontend/src/pages/VerifySettings.tsx b/frontend/src/pages/VerifySettings.tsx
index e410375c..310af6eb 100644
--- a/frontend/src/pages/VerifySettings.tsx
+++ b/frontend/src/pages/VerifySettings.tsx
@@ -4,8 +4,8 @@ import { AlertTriangle } from 'lucide-react'
 import { get } from '../api/http'
 import { modelOptions, providerOfModel, useCatalog } from '../store/catalog'
 import { Field, SectionBar } from '../components/ui'
-import { VERIFY_SETTING_TEXT } from '../lib/terms'
-import type { VerifySpend } from '../types'
+import { PROVIDER_REF_TEXT, VERIFY_SETTING_TEXT } from '../lib/terms'
+import type { Provider, VerifySpend } from '../types'
 
 /*
  * 设置页「偏好设置」里「核查」一节：双盲复算、反方审稿、审批质询共用的核查模型、各自的开关和上限、每日金额上限
@@ -163,6 +163,10 @@ export function VerifySection({ cur, errors, onEdit, refresh }: {
   const defaultProvider = enabledProviders.find((p) => p.kind !== 'mock') ?? enabledProviders[0]
   const provider = cur.provider ? providers.find((p) => p.name === cur.provider) : undefined
   const providerMissing = !!cur.provider && providers.length > 0 && !provider
+  // 点名停用的接入以前照常调用，现在核查时照实报「已停用」、记缺口：和「不存在」一样在这一格下面说。服务端按这一项
+  // 拒收时（errors.provider，设置页从 422 的 field 落过来）照它的整句
+  const providerError = errors.provider ?? (providerMissing ? S.providerGone(cur.provider)
+    : provider && !provider.enabled ? `${PROVIDER_REF_TEXT.disabled(cur.provider)}：${PROVIDER_REF_TEXT.verifyBroken}` : undefined)
   const modelName = cur.model.trim()
   const byModel = !cur.provider && !!modelName
   const notSet = !cur.provider && !modelName
@@ -221,8 +225,7 @@ export function VerifySection({ cur, errors, onEdit, refresh }: {
           <p id="pref-verify-model-hint" className="mb-2 mt-0.5 text-2xs leading-relaxed text-faint">{S.differ}</p>
         )}
         <div className="grid grid-cols-2 gap-3 max-sm:grid-cols-1">
-          <Field label={T.provider} htmlFor={fieldId('provider')}
-                 error={providerMissing ? S.providerGone(cur.provider) : undefined}
+          <Field label={T.provider} htmlFor={fieldId('provider')} error={providerError}
                  hint={byModelHint ? (
                    <span data-verify-by-model={owner ? (owner.enabled ? 'found' : 'disabled') : 'default'}
                          style={owner?.enabled ? undefined : { color: 'var(--st-waiting)' }}>{byModelHint}</span>
@@ -231,11 +234,12 @@ export function VerifySection({ cur, errors, onEdit, refresh }: {
               <select {...p} className="field" value={cur.provider} onChange={(e) => pickProvider(e.target.value)}>
                 <option value="">{byModel ? S.providerFromModel : S.providerDefault}</option>
                 {providerMissing && <option value={cur.provider}>{S.providerGoneOption(cur.provider)}</option>}
-                {providers.map((pv) => <option key={pv.id} value={pv.name}>{pv.name}{pv.enabled ? '' : S.providerOff}</option>)}
+                <ProviderOptions providers={providers} current={cur.provider} />
               </select>
             )}
           </Field>
-          <Field label={T.model} htmlFor={fieldId('model')} hint={provider?.default_model ? S.modelOf(provider.default_model) : undefined}>
+          <Field label={T.model} htmlFor={fieldId('model')}
+                 hint={provider?.enabled && provider.default_model ? S.modelOf(provider.default_model) : undefined}>
             {(p) => (
               <>
                 <input {...p} className="field mono text-xs" value={cur.model} list="pref-verify-models" spellCheck={false}
@@ -290,6 +294,22 @@ export function VerifySection({ cur, errors, onEdit, refresh }: {
   )
 }
 
+/**
+ * 接入下拉里的各家。停用的照列（带「已停用」），但选不了：选了运行时也调不了，保存时服务端同样会拒收。
+ * 已经选着的那一个（存着的值后来被停用了）照常显示，下面那一格写明它用不了
+ */
+export function ProviderOptions({ providers, current }: { providers: Provider[]; current: string }) {
+  return (
+    <>
+      {providers.map((pv) => (
+        <option key={pv.id} value={pv.name} disabled={!pv.enabled && pv.name !== current}>
+          {pv.name}{pv.enabled ? '' : S.providerOff}
+        </option>
+      ))}
+    </>
+  )
+}
+
 /** 三项各一组：标题是服务端叫法表里那一组的叫法，下面一句说它做什么 */
 function PartGroup({ part, children }: { part: Part; children: ReactNode }) {
   return (
diff --git a/frontend/src/types.ts b/frontend/src/types.ts
index 318d2f4a..047003b1 100644
--- a/frontend/src/types.ts
+++ b/frontend/src/types.ts
@@ -1384,6 +1384,8 @@ export interface PublishFix {
   code: string
   kind: 'auto' | 'choice' | 'assist'
   node_id?: string | null
+  /** 这条修复落在哪个字段：点名的模型接入一处一条（同一节点上的几处按它区分） */
+  field?: string | null
   label: string
   preview?: { field?: string | null; before?: unknown; after?: unknown } | null
   /** handoff：选了这一项就是「交给 Copilot」（G4 的「它在做计算」）。只认这个标记，不认值——
diff --git a/scripts/check-evidence.mjs b/scripts/check-evidence.mjs
index f38bee61..0a873450 100644
--- a/scripts/check-evidence.mjs
+++ b/scripts/check-evidence.mjs
@@ -1447,7 +1447,8 @@ await section('studio', '报告撰写节点：画布认得、检查器能配（R
   check('……null 写「不限」（没写才是「（空）」）、金额带单位', previews[1] === '不限' && previews[2] === '0.05 美元', JSON.stringify(previews.slice(1, 3)))
   check('……补预算按整份 judge 记时一键一行', previews[3] === '裁判模型：x；金额上限（美元）：不限', previews[3])
   check('……证据相矛盾时写选项文字', previews[4] === '不予出具', previews[4])
-  check('……别处的 model 不借用裁判的叫法', previews[5] === '工作流默认设置 · model', previews[5])
+  // 不借「裁判模型」，写通用的「模型」（以前露键名 model；点名接入的修复会清掉全图默认里的模型，预览里要写得出叫法）
+  check('……别处的 model 不借用裁判的叫法', previews[5] === '工作流默认设置 · 模型', previews[5])
   if (SHOTS) {
     await jf.scrollIntoViewIfNeeded()
     for (const theme of ['dark', 'light']) {
diff --git a/scripts/check-manage.mjs b/scripts/check-manage.mjs
index ddf696f4..54bdceed 100644
--- a/scripts/check-manage.mjs
+++ b/scripts/check-manage.mjs
@@ -589,6 +589,70 @@ await section('设置 · 门控模型', async () => {
   await old.close()
 })
 
+await section('设置 · 点名的接入已停用或不存在', async () => {
+  // 点名停用的接入以前照常调用，现在运行时照实报错（K1）：存着的值后来被停用了，那一格下面要说；别的停用接入列着但选不了；
+  // 服务端按项拒收（422 带 field）时整句落到那一格下面、焦点移过去，保存条上原因不截断。接入表、设置读写都是假的
+  const PROVIDERS = [
+    { id: 'check-ref-p1', name: 'demo-main', kind: 'openai', base_url: 'https://example.com/v1', default_model: 'big-model',
+      models: [{ id: 'big-model' }], enabled: true, extra: {}, api_key_masked: '', has_key: true },
+    { id: 'check-ref-p2', name: 'demo-off', kind: 'openai', base_url: 'https://example.com/v1', default_model: 'off-model',
+      models: [{ id: 'off-model' }], enabled: false, extra: {}, api_key_masked: '', has_key: true },
+    { id: 'check-ref-p3', name: 'demo-spare', kind: 'openai', base_url: 'https://example.com/v1', default_model: 'spare-1',
+      models: [{ id: 'spare-1' }], enabled: false, extra: {}, api_key_masked: '', has_key: true },
+  ]
+  let stored = await get('/settings')
+  stored = {
+    ...stored,
+    run: { ...(stored.run ?? {}), tool_gate_provider: 'demo-off', tool_gate_model: null },
+    judge: { ...(stored.judge ?? {}), provider: 'demo-off', model: null },
+    verify: { ...(stored.verify ?? {}), provider: 'demo-off', model: null },
+  }
+  const REFUSED = '「门控模型 · 接入」填写的模型接入「demo-main」已停用。请在「设置 → 模型接入」中启用它，或换一个接入；留空表示使用默认接入的默认模型'
+  let refuse = true
+  const { page, sent, errors, close } = await open('/settings/prefs', {
+    handlers: [
+      [/^GET \/settings$/, (route) => json(stored)(route)],
+      [/^PUT \/settings$/, (route, { body }) => {
+        if (refuse) {
+          refuse = false
+          return route.fulfill({ status: 422, contentType: 'application/json',
+            body: JSON.stringify({ detail: REFUSED, code: 'settings_provider_invalid', field: 'run.tool_gate_provider' }) })
+        }
+        stored = { ...stored, ...body.values }
+        return json(stored)(route)
+      }],
+      [/^GET \/providers$/, json(PROVIDERS)],
+    ],
+  })
+  const said = async (id) => page.locator(`#${id}-error`).innerText().catch(() => '')
+  check('门控模型：存着的接入已停用，那一格下面说清', (await said('pref-gate-provider')).includes('模型接入「demo-off」已停用：门控模型无法调用，所有工具调用将转为人工审批'),
+    await said('pref-gate-provider'))
+  check('证据裁判：同样说清', (await said('pref-judge-provider')).includes('模型接入「demo-off」已停用：裁判调用将失败'), await said('pref-judge-provider'))
+  check('核查模型：同样说清', (await said('pref-verify-provider')).includes('模型接入「demo-off」已停用：核查调用将失败'), await said('pref-verify-provider'))
+  check('……模型那一格不再写「留空则使用 off-model」', !(await page.locator('[data-gate-model]').innerText()).includes('off-model'))
+  const gate = page.locator('#pref-gate-provider')
+  const off = (name) => gate.locator(`option[value="${name}"]`).evaluate((o) => o.disabled)
+  check('下拉：选着的停用接入照常显示，别的停用接入列着但选不了', !(await off('demo-off')) && await off('demo-spare') && !(await off('demo-main')))
+  await shot(page, 'prefs-provider-disabled')
+  await gate.selectOption('demo-main')
+  check('换成启用的接入：那一格的说明消失，刚才那个停用接入也选不回去了', !(await said('pref-gate-provider')) && await off('demo-off'))
+  await page.getByRole('button', { name: /保存设置/ }).click()
+  await page.waitForTimeout(500)
+  check('服务端按项拒收：整句落到那一格下面', (await said('pref-gate-provider')) === REFUSED, await said('pref-gate-provider'))
+  check('……焦点移到那一格', await gate.evaluate((el) => el === document.activeElement))
+  const bar = await page.locator('[data-prefs-save-error]').innerText().catch(() => '')
+  check('……保存条写到原因，不截在第一句', bar.startsWith('保存失败：') && bar.includes('请在「设置 → 模型接入」中启用它'), bar)
+  await gate.selectOption('')
+  check('再改这一项：服务端那句说明收起', !(await said('pref-gate-provider')))
+  await page.getByRole('button', { name: /保存设置/ }).click()
+  await page.waitForTimeout(500)
+  const put = sent.filter((x) => x.key === 'PUT /settings').at(-1)?.body?.values?.run ?? {}
+  check('……再保存：照常写进去', put.tool_gate_provider === null && (await page.locator('[data-prefs-save-error]').count()) === 0,
+    `provider=${JSON.stringify(put.tool_gate_provider)}`)
+  check('没有运行时报错', errors.length === 0, errors[0] ?? '')
+  await close()
+})
+
 await section('设置 · 智能体护栏', async () => {
   // 默认步数、token 预算、金额预算（后端 engine/guards.py）。预算留空 = 不限，存 null
   let stored = await get('/settings')
diff --git a/scripts/check-publish.mjs b/scripts/check-publish.mjs
index 4b1d47a7..5c66e4eb 100644
--- a/scripts/check-publish.mjs
+++ b/scripts/check-publish.mjs
@@ -2,6 +2,8 @@
 // 先预览再「应用并重新检查」、问题面板里的「发布前检查」、老后端（两个接口 404）照旧。
 // 另有一键升级为可追溯结构（可点击证据五期）：问题面板的快速修复、升级预览、应用走现有的保存、
 // 从记录页横幅跳过来（?upgrade=1）。升级接口和校验给的那条建议同样在浏览器里伪造。
+// 还有点名的模型接入不存在或已停用（K1）：一处一行、各有一组要人选的修复，问题面板不露键名，
+// 在设置里删了接入回到画布要重新校验。接入表、校验同样伪造。
 //
 // 不写库：工作流、保存、发布、publish-check、autofix 全在浏览器里用 page.route 伪造。
 // 伪造的检查接口按请求里的图现算（下面的 lint），所以修完、存完、再查，结论会真的变；
@@ -162,6 +164,35 @@ const SQLWF = {
   edges: chain('in', 'sum', 'done'),
 }
 
+/**
+ * 点名的模型接入（K1）：「提问」点的接入不存在，协作节点自己的接入已停用、成员「分析师」点的接入不存在。
+ * 接入表在 open() 里伪造（state.providers），校验和门禁都按它现算
+ */
+const PROV = {
+  nodes: [
+    node('in', 'input', 0, '入口', { fields: [{ name: 'week', required: true }] }),
+    node('ask', 'llm', 240, '提问', { prompt: '总结本周销售', provider: 'demo-old', model: 'old-model' }),
+    node('team', 'supervisor', 480, '协作', { goal: '复核', provider: 'demo-off', agents: [{ name: '分析师', provider: 'demo-old', tools: [] }] }),
+    node('done', 'output', 720, '成果', { fields: [{ name: 'report', value: '{{ last_message }}' }] }),
+  ],
+  edges: chain('in', 'ask', 'team', 'done'),
+}
+/** 点名的接入现在好好的（启用着）：在设置里删掉它之后回到画布，校验要重新查出来 */
+const PROV_OK = {
+  nodes: [
+    node('in', 'input', 0, '入口', { fields: [{ name: 'week', required: true }] }),
+    node('ask', 'llm', 240, '提问', { prompt: '总结本周销售', provider: 'demo-main' }),
+    node('done', 'output', 480, '成果', { fields: [{ name: 'report', value: '{{ nodes.ask.text }}' }] }),
+  ],
+  edges: chain('in', 'ask', 'done'),
+}
+const PROVIDERS = [
+  { id: 'pv-main', name: 'demo-main', kind: 'openai_compatible', base_url: 'https://example.com/v1', default_model: 'big-model',
+    models: [{ id: 'big-model' }], enabled: true, extra: {}, api_key_masked: '', has_key: true },
+  { id: 'pv-off', name: 'demo-off', kind: 'openai_compatible', base_url: 'https://example.com/v1', default_model: 'tiny-1',
+    models: [{ id: 'tiny-1' }], enabled: false, extra: {}, api_key_masked: '', has_key: true },
+]
+
 const wf = (id, name, graph, extra = {}) => ({
   id, name, description: '检查脚本伪造的工作流', graph, tags: [], version: 3, is_template: false,
   status: 'draft', published_version: null, published_by: null, run_count: 0,
@@ -179,6 +210,8 @@ const FAKES = {
   'pf-legacy': wf('pf-legacy', '__upgrade_check_legacy__', LEGACY, { status: 'published', published_version: 3 }),
   'pf-ask': wf('pf-ask', '__upgrade_check_ask__', ASK),
   'pf-sql': wf('pf-sql', '__publish_check_sql__', SQLWF),
+  'pf-prov': wf('pf-prov', '__publish_check_provider__', PROV),
+  'pf-provok': wf('pf-provok', '__publish_check_provider_ok__', PROV_OK),
 }
 
 const clone = (x) => JSON.parse(JSON.stringify(x))
@@ -186,15 +219,54 @@ const who = (n) => `「${n.data.label}」`
 /** 指标候选的写法照后端 autofix._metric_options：「名称（id）」，提示写来自哪个口径卡 */
 const metricOptions = (m) => m.data.config.metrics.map((x) => ({ value: x.id, label: `${x.name}（${x.id}）`, hint: `口径卡「${m.data.label}」` }))
 
+/**
+ * 伪造的点名接入检查，形状照后端 engine/provider_refs.py 与 autofix._plan_provider：一处一条问题（字段 provider、
+ * agents[i].provider），门禁里是 error、带一条要人选的修复（id 是 code:节点:字段）；画布校验里是 warning、没有修复
+ */
+function providerLint(graph, providers, level) {
+  const issues = []
+  const fixes = []
+  const refs = []
+  const kind = { llm: '模型调用', supervisor: '多 Agent 协作' }
+  for (const n of graph.nodes) {
+    const c = n.data.config ?? {}
+    if (c.provider) refs.push({ n, field: 'provider', name: c.provider, who: `${who(n)}（${kind[n.type]}）` })
+    ;(c.agents ?? []).forEach((a, i) => {
+      if (a.provider) refs.push({ n, field: `agents[${i}].provider`, name: a.provider, who: `${who(n)}（${kind[n.type]}）的成员「${a.name}」` })
+    })
+  }
+  for (const r of refs) {
+    const p = providers.find((x) => x.name === r.name)
+    if (p?.enabled) continue
+    const code = p ? 'provider.disabled' : 'provider.missing'
+    const id = `${code}:${r.n.id}:${r.field}`
+    const gate = level === 'error'
+    issues.push({ level, node_id: r.n.id, field: r.field, code, fix: gate ? id : null,
+      message: `${r.who}指定的模型接入「${r.name}」${p ? '已停用' : '不存在'}。请在「设置 → 模型接入」中${p ? '启用它' : '核对名称'}，`
+        + '或在「发布前检查」中改用其他接入' })
+    if (gate) {
+      fixes.push({ id, code, node_id: r.n.id, field: r.field, kind: 'choice', label: `选择${r.who}改用的模型接入`,
+        options: [{ value: '', label: '不指定接入', hint: '去掉这一处指定的接入，按上一级的设置或模型名找接入' },
+          ...providers.filter((x) => x.enabled).map((x) => ({ value: x.name, label: x.name, hint: null }))] })
+    }
+  }
+  return { issues, fixes }
+}
+
 /**
  * 伪造的门禁：按请求里的图现算，形状照 PF-SPEC（issues 带 code 和 fix，fixes 列修法）。
  * 已发布档只给提示，受管档有错。修法的 id 是 code:节点（图级的是 code:graph）。
  * followsNever：当作这张图的工作流默认设置是「全部无需审批」（画布上不带 defaults，按工作流认）
  */
-function lint(graph, level, { followsNever = false } = {}) {
+function lint(graph, level, { followsNever = false, providers = null } = {}) {
   const hard = level === 'governed'
   const issues = []
   const fixes = []
+  if (providers) {
+    const found = providerLint(graph, providers, 'error')
+    issues.push(...found.issues)
+    fixes.push(...found.fixes)
+  }
   const add = (n, code, message, fix, isError = true) => {
     const id = `${code}:${n.id}`
     issues.push({ level: isError && hard ? 'error' : 'warning', node_id: n.id, code, message, fix: fix ? id : null, field: null })
@@ -294,9 +366,9 @@ function lint(graph, level, { followsNever = false } = {}) {
 }
 
 /** 伪造的 autofix：在副本上照选中的修法改，逐项记 changes；钉不上的（pf-lib 没发过版时）进 rejected */
-function autofix(body, { unpublished = false, followsNever = false } = {}) {
+function autofix(body, { unpublished = false, followsNever = false, providers = null } = {}) {
   const graph = clone(body.graph)
-  const before = lint(graph, body.level, { followsNever })
+  const before = lint(graph, body.level, { followsNever, providers })
   const changes = []
   const rejected = []
   const applied = []
@@ -338,6 +410,15 @@ function autofix(body, { unpublished = false, followsNever = false } = {}) {
       const v = body.choices?.[id]
       const to = `{{ nodes.${v}.text }}`
       change('fields[0].value', c.fields[0].value, to); c.fields[0].value = to
+    } else if (fix.code.startsWith('provider.')) {
+      // 点名的接入：改用选的那个，选「不指定接入」就去掉这一项
+      const v = body.choices?.[id]
+      if (v === undefined) { rejected.push({ fix_id: id, reason: `这一处需要你选择：${fix.label}` }); continue }
+      const m = /^agents\[(\d+)\]\.provider$/.exec(fix.field)
+      const holder = m ? c.agents[Number(m[1])] : c
+      change(fix.field, holder.provider ?? null, v || null)
+      if (v) holder.provider = v
+      else delete holder.provider
     } else if (fix.code === 'contract.required_missing') {
       const v = body.choices?.[id]
       if (!Array.isArray(v) || !v.length) { rejected.push({ fix_id: id, reason: `这一处需要你选择：${fix.label}` }); continue }
@@ -356,7 +437,7 @@ function autofix(body, { unpublished = false, followsNever = false } = {}) {
     assist = { ok: true, summary: '把复核团队的轮数收紧到 2 轮；换成固定编排要删节点，按规矩没动它',
       questions: ['复核团队要换成哪一个固定编排的 Agent？它现在只有一个成员 checker，保留它的职责吗？'] }
   }
-  const remaining = lint(graph, body.level, { followsNever })
+  const remaining = lint(graph, body.level, { followsNever, providers })
   return { graph, changes, applied, rejected, handoff, remaining: remaining.issues, assist, ok: remaining.ok, ops: [] }
 }
 
@@ -468,7 +549,10 @@ async function open({ id = 'pf-hard', width = 1440, height = 900, backend = 'new
   const json = (route, body, status = 200) => route.fulfill({ status, contentType: 'application/json', body: JSON.stringify(body) })
   // validate：'ok' | 'fail'（校验接口 500，后端断开时和保存一起失败）。检查中途改它，下一次校验就按新的回
   const state = { checks: [], autofixes: [], patches: [], publishes: [], upgrades: [], version: FAKES[id].version, graph: clone(FAKES[id].graph), save, backend, upgrade,
-    validate: 'ok' }
+    validate: 'ok', validates: 0, deleted: [] }
+  // 点名接入的那两张图：接入表伪造，校验、门禁、修复都按它现算
+  const providers = id === 'pf-prov' || id === 'pf-provok' ? clone(PROVIDERS) : null
+  state.providers = providers
 
   await page.route(/\/api\//, (route) => {
     const req = route.request()
@@ -483,6 +567,23 @@ async function open({ id = 'pf-hard', width = 1440, height = 900, backend = 'new
       ? json(route, { detail: '校验服务暂时无法连接' }, 500)
       : json(route, { ok: true, issues: advice ? upgradeAdvice(route.request().postDataJSON()?.graph ?? { nodes: [], edges: [] }) : [] }))
   }
+  if (providers) {
+    await page.route(/\/api\/workflows\/validate$/, (route) => {
+      state.validates += 1
+      const graph = route.request().postDataJSON()?.graph ?? { nodes: [], edges: [] }
+      return json(route, { ok: true, issues: providerLint(graph, state.providers, 'warning').issues })
+    })
+    await page.route(/\/api\/providers(\?.*)?$/, (route) => (route.request().method() === 'GET'
+      ? json(route, state.providers) : route.fallback()))
+    // 设置里删接入：只改伪造的接入表
+    await page.route(/\/api\/providers\/pv-[a-z]+$/, (route) => {
+      if (route.request().method() !== 'DELETE') return route.fallback()
+      const pid = new URL(route.request().url()).pathname.split('/').pop()
+      state.deleted.push(pid)
+      state.providers = state.providers.filter((x) => x.id !== pid)
+      return json(route, { ok: true })
+    })
+  }
   await page.route(/\/api\/copilot\/upgrade-evidence$/, async (route) => {
     const body = route.request().postDataJSON()
     state.upgrades.push(body)
@@ -520,19 +621,19 @@ async function open({ id = 'pf-hard', width = 1440, height = 900, backend = 'new
       const last = state.checks.at(-1)
       if (!(last && last.key === key && Date.now() - last.at < 300)) state.checks.push({ ...body, key, at: Date.now() })
       if (state.backend === 'old') return json(route, { detail: 'Not Found' }, 404)
-      return json(route, lint(body.graph ?? state.graph, body.level, { followsNever }))
+      return json(route, lint(body.graph ?? state.graph, body.level, { followsNever, providers: state.providers }))
     }
     if (method === 'POST' && sub === 'autofix') {
       const body = req.postDataJSON()
       state.autofixes.push(body)
       if (state.backend !== 'new') return json(route, { detail: 'Not Found' }, 404)
       if (fixDelay) await new Promise((r) => setTimeout(r, fixDelay))
-      return json(route, autofix(body, { unpublished, followsNever }))
+      return json(route, autofix(body, { unpublished, followsNever, providers: state.providers }))
     }
     if (method === 'POST' && sub === 'publish') {
       const body = req.postDataJSON()
       state.publishes.push(body)
-      const r = lint(state.graph, body.level, { followsNever })
+      const r = lint(state.graph, body.level, { followsNever, providers: state.providers })
       // 真后端的 /publish 回包：问题带 code、不带 fix（fix 只有 publish-check 给）；老后端连 code 也没有
       const issues = state.backend === 'old' ? r.issues.map(({ code: _c, fix: _f, ...rest }) => rest)
         : r.issues.map(({ fix: _f, ...rest }) => rest)
@@ -1513,6 +1614,103 @@ await section('升级：?upgrade=1 直达：打开问题面板、开始预览，
   check('没有运行时报错', errors.length === 0, errors.join(' | '))
 })
 
+await section('点名的模型接入：一处一行、各有一组要人选的修复，预览写「模型接入」', async () => {
+  const { page, state, errors } = await open({ id: 'pf-prov' })
+  await openDialog(page)
+  await waitFor(page, async () => (await dialog(page).locator('[data-preflight-issue]').count()) > 0)
+  const rows = dialog(page).locator('[data-preflight-issue^="provider."]')
+  check('三处点名的接入各一行：协作节点自己的接入和成员的接入不合成一行', await rows.count() === 3, `${await rows.count()} 行`)
+  const summary = await dialog(page).locator('[data-preflight-summary]').innerText().catch(() => '')
+  check('……结论按三处算：3 处问题将被门禁拦截', summary.includes('3 处问题将被门禁拦截'), summary)
+  const member = dialog(page).locator('[data-fix-choice="provider.missing:team:agents[0].provider"]')
+  const memberText = await member.innerText().catch(() => '')
+  check('每一处一组选项：不指定接入、启用的接入；停用的不在候选里', await dialog(page).locator('[data-fix-choice^="provider."]').count() === 3
+    && await member.locator('input[type="radio"]').count() === 2 && memberText.includes('不指定接入') && memberText.includes('demo-main')
+    && !memberText.includes('demo-off'), memberText)
+  check('……标题说清是哪一处', memberText.includes('选择「协作」（多 Agent 协作）的成员「分析师」改用的模型接入'), memberText)
+  check('……不替人选', await member.locator('input:checked').count() === 0)
+  await member.locator('label', { hasText: 'demo-main' }).click()
+  await member.locator('[data-fix-action="choice"]').click()
+  await dialog(page).locator('[data-fix-preview="ready"]').waitFor()
+  check('预览请求只修这一处，带着选的接入', JSON.stringify(state.autofixes.at(-1)?.apply) === '["provider.missing:team:agents[0].provider"]'
+    && state.autofixes.at(-1)?.choices?.['provider.missing:team:agents[0].provider'] === 'demo-main')
+  const line = await dialog(page).locator('[data-fix-change]').first().innerText().catch(() => '')
+  check('预览写「「协作」 · 团队成员 · 「分析师」 · 模型接入：demo-old → demo-main」，不露键名',
+    /「协作」\s*·\s*团队成员 · 「分析师」 · 模型接入：\s*demo-old\s*demo-main/.test(line) && !/provider/.test(line), line)
+  await dialog(page).locator('[data-fix-apply]').click()
+  await waitFor(page, async () => state.patches.length === 1 && state.checks.length >= 2)
+  const team = cfgOf(state.patches[0]?.graph, 'team')
+  check('应用：成员改用 demo-main，节点自己的接入不动', team?.agents?.[0]?.provider === 'demo-main' && team?.provider === 'demo-off',
+    JSON.stringify(team ?? {}).slice(0, 120))
+  await waitFor(page, async () => (await dialog(page).locator('[data-preflight-issue^="provider."]').count()) === 2)
+  check('……重查之后剩两处', await dialog(page).locator('[data-preflight-issue^="provider."]').count() === 2)
+  await shoot(page, 'publish-provider-fix', dialog(page))
+  check('没有运行时报错', errors.length === 0, errors.join(' | '))
+})
+
+await section('点名的模型接入：问题面板写「模型接入」，不露键名', async () => {
+  const { page, errors } = await open({ id: 'pf-prov' })
+  await page.locator('.react-flow__pane').click({ position: { x: 30, y: 30 } })
+  await page.keyboard.press('Alt+KeyP')
+  await page.locator('#dock-problems').waitFor()
+  await waitFor(page, async () => (await page.locator('#dock-problems [data-problem-field]').count()) >= 3)
+  const fields = await page.locator('#dock-problems [data-problem-field]').allInnerTexts()
+  check('字段写「模型接入」「成员「分析师」的模型接入」', fields.filter((t) => t.trim() === '模型接入').length === 2
+    && fields.some((t) => t.trim() === '成员「分析师」的模型接入'), fields.join(' | '))
+  check('……没有一处露出键名 provider', !(await page.locator('#dock-problems').innerText()).includes('provider'))
+  await shoot(page, 'problems-provider', page.locator('section[aria-label="问题"]'))
+  check('没有运行时报错', errors.length === 0, errors.join(' | '))
+})
+
+await section('点名的模型接入：在设置里删了接入，回到画布重新校验', async () => {
+  const { page, state, errors } = await open({ id: 'pf-provok' })
+  const providerIssues = () => page.evaluate(() => window.__studio.getState().issues
+    .filter((i) => String(i.code ?? '').startsWith('provider.')).map((i) => i.message))
+  await waitFor(page, async () => state.validates > 0)
+  check('起初点名的接入启用着：没有接入问题', (await providerIssues()).length === 0)
+  const before = state.validates
+  await page.locator('nav[aria-label="主导航"] a[href="/settings"]').click()
+  await page.locator('[data-provider="demo-main"]').waitFor()
+  await page.getByRole('button', { name: '删除模型接入 demo-main' }).click()
+  await page.getByRole('button', { name: '删除接入' }).click()
+  await waitFor(page, async () => state.deleted.length === 1)
+  await page.waitForTimeout(400)
+  await page.evaluate(() => history.back())
+  await waitFor(page, async () => (await providerIssues()).length > 0, 6000)
+  const said = await providerIssues()
+  check('回到画布：重新校验，查出「demo-main」不存在', state.validates > before && said.some((m) => m.includes('「demo-main」不存在')),
+    `${before} → ${state.validates} · ${said.join(' | ').slice(0, 100)}`)
+  // 接入表没再变：来回切页不重复校验
+  const settled = state.validates
+  await page.locator('nav[aria-label="主导航"] a[href="/settings"]').click()
+  await page.locator('[data-provider="demo-off"]').waitFor()
+  await page.evaluate(() => history.back())
+  await page.waitForFunction(() => window.location.pathname.startsWith('/studio/'))
+  await page.waitForTimeout(1200)
+  check('接入表没变：切回来不重复校验', state.validates === settled, `${settled} → ${state.validates}`)
+  check('没有运行时报错', errors.length === 0, errors.join(' | '))
+})
+
+await section('点名的模型接入：390px 下修复选项不伸出弹窗', async () => {
+  const { page } = await open({ id: 'pf-prov', width: 390, height: 820 })
+  await page.getByRole('button', { name: '更多操作' }).click()
+  await page.locator('[role="menu"][aria-label="更多操作"] [role^="menuitem"]', { hasText: '发布' }).click()
+  await dialog(page).waitFor()
+  await dialog(page).locator('[data-fix-choice^="provider."]').first().waitFor()
+  const m = await page.evaluate(() => {
+    const d = document.querySelector('[role="dialog"]')
+    const wide = [...d.querySelectorAll('*')].filter((el) => {
+      const b = el.getBoundingClientRect()
+      return b.width > 0 && (b.right > window.innerWidth + 0.5 || b.left < -0.5)
+    }).map((el) => el.tagName + (el.className ? `.${String(el.className).split(' ')[0]}` : ''))
+    const scrollers = [...d.querySelectorAll('*')].filter((el) => el.scrollWidth > el.clientWidth + 1
+      && !['visible', 'hidden', 'clip'].includes(getComputedStyle(el).overflowX)).length
+    return { wide: wide.slice(0, 4), scrollers, own: d.scrollWidth - d.clientWidth }
+  })
+  check('390px：几组接入选项和长标题都在弹窗里，没有横向滚动条', !m.wide.length && m.scrollers === 0 && m.own <= 0, JSON.stringify(m))
+  await shoot(page, 'publish-provider-390', page)
+})
+
 await section('360px 下不横向滚动', async () => {
   const { page } = await open({ width: 360, height: 780 })
   // 窄屏上「发布」收在「更多操作」里