Add template-driven document creation to the RDM duties tab

Why: the duties tab only listed existing documents — rdm.docs.instantiate
had no UI entry, so a fresh project showed an empty duties tab with no
setup path (owner trial feedback 2026-10-15).

Evidence: new docs-instantiate-params tests green; full vitest run shows
only the 12 pre-existing conversation-work failures also present at clean
HEAD; design-guard green.

Impact: duties tab gains a template picker + title input wired to
rdm.docs.instantiate (backend command rdm.docs.templates lists published
identities); instantiation refreshes the catalog and selects the new doc.

Refs: Agent-System-RDM docs/records/dhf/u4-header-footer-slots.md

src/components/adminRdmSections.tsx

@@ -278,6 +278,18 @@ interface DutyCatalogDoc {
   assigned: boolean; author?: string; reviewers?: string[]; approver?: string; activeRound?: number
 }
 
+interface DocsTemplateRow {
+  templateId: string; version: string; title: string; docTypes: string[]; stage?: string
+}
+
+/** rdm.docs.instantiate 参数：docType 取首个适用类型；空标题交由后端取模板标题。 */
+export function docsInstantiateParams(tpl: DocsTemplateRow, title: string): Record<string, unknown> {
+  return {
+    docType: tpl.docTypes[0], templateId: tpl.templateId, version: tpl.version,
+    ...(title.trim() ? { title: title.trim() } : {}),
+  }
+}
+
 interface DutyGetOut {
   docId: string; title: string; assigned: boolean
   roles: { author: string; reviewers: string[]; approver: string }
@@ -320,6 +332,9 @@ export function RdmDutiesSection({ project }: { project: Project }) {
   const [err, setErr] = useState('')
   const [notice, setNotice] = useState('')
   const [busy, setBusy] = useState(false)
+  const [tpls, setTpls] = useState<DocsTemplateRow[] | null>(null)
+  const [tplSel, setTplSel] = useState('')
+  const [newTitle, setNewTitle] = useState('')
 
   const cmd = <T,>(id: string, params: Record<string, unknown>) => api.rdmProjectCommand<T>(project, id, params)
   const memberPage = useMemberPickerPage(members)
@@ -388,6 +403,9 @@ export function RdmDutiesSection({ project }: { project: Project }) {
     cmd<{ members: { owner: string; role: string }[] }>('rdm.project.member.list', { projectId })
       .then(out => { if (currentProject(epoch)) setMembers(out.members ?? []) })
       .catch(() => { if (currentProject(epoch)) setMembers([]) })
+    api.rdmCommand<DocsTemplateRow[]>('rdm.docs.templates')
+      .then(rows => { if (currentProject(epoch)) setTpls(rows ?? []) })
+      .catch(() => { if (currentProject(epoch)) setTpls([]) })
     return () => {
       requests.current.epoch++; requests.current.selection++; requests.current.status++
       requests.current.catalog++; requests.current.action++; requests.current.selected = ''
@@ -431,8 +449,39 @@ export function RdmDutiesSection({ project }: { project: Project }) {
     cmd('rdm.review.assign.doc.batch', { projectId, docs: [...batchSel].map(d => ({
       docId: d, author: batchAuthor[0], reviewers: batchReviewers, approver: batchApprover[0] })) }))
 
+  /** U4/UI：按已发布 DHF 模板整份生成文档（章节骨架自动播种），随后选中新文档。 */
+  const instantiate = () => {
+    const tpl = (tpls ?? []).find(r => `${r.templateId}@${r.version}` === tplSel)
+    if (!tpl) return
+    const title = newTitle.trim()
+    return run(`已按模板生成「${title || tpl.title}」`, async () => {
+      const res = await cmd<{ docId: string }>('rdm.docs.instantiate', docsInstantiateParams(tpl, title))
+      await refreshCatalog()
+      await selectDoc(res.docId, true)
+    })
+  }
+  const tpl = (tpls ?? []).find(r => `${r.templateId}@${r.version}` === tplSel)
+
   return (
     <div>
+      <h4 className="settings-group-title">按模板生成文档</h4>
+      <div className="ad-create">
+        <div className="ad-row">
+          <select className="lg-input" aria-label="文档模板" value={tplSel}
+            onChange={e => { setTplSel(e.target.value); setNewTitle('') }}>
+            <option value="">{tpls === null ? '模板加载中…' : '选择模板…'}</option>
+            {(tpls ?? []).map(r => (
+              <option key={`${r.templateId}@${r.version}`} value={`${r.templateId}@${r.version}`}>
+                {r.title}（{r.templateId}@{r.version}）
+              </option>
+            ))}
+          </select>
+          <input className="lg-input" aria-label="文档标题" placeholder={`文档标题（默认：${tpl?.title ?? '模板标题'}）`}
+            value={newTitle} onChange={e => setNewTitle(e.target.value)} />
+          <button className="lg-submit ad-create-btn" disabled={busy || !tpl} onClick={instantiate}>生成文档</button>
+        </div>
+        <p className="ad-hint">按已发布 DHF 模板整份生成：章节骨架自动播种；生成后在下方清单选中文档分配三权并走整文审签。</p>
+      </div>
       <h4 className="settings-group-title">文档清单（职责分配对象为整份文档；搜索/浏览同一目录）</h4>
       <table className="ad-table">
         <thead><tr><th></th><th>文档</th><th>类型 / 阶段</th><th>当前职责</th><th>状态</th><th></th></tr></thead>

test/docs-instantiate-params.test.ts

@@ -0,0 +1,21 @@
+import { describe, expect, it } from 'vitest'
+import { docsInstantiateParams } from '../src/components/adminRdmSections'
+
+const tpl = {
+  templateId: 'dhf.2750fbaf1f67d10c', version: '1.0.0', title: '项目建议书',
+  docTypes: ['rd_proposal'], stage: '0. 商务阶段',
+}
+
+describe('docsInstantiateParams', () => {
+  it('carries docType/templateId/version and trims the title', () => {
+    expect(docsInstantiateParams(tpl, '  U5 试点项目建议书 ')).toEqual({
+      docType: 'rd_proposal', templateId: 'dhf.2750fbaf1f67d10c',
+      version: '1.0.0', title: 'U5 试点项目建议书',
+    })
+  })
+  it('omits blank titles so the backend falls back to the template title', () => {
+    const p = docsInstantiateParams(tpl, '   ')
+    expect(Object.hasOwn(p, 'title')).toBe(false)
+    expect(p).toEqual({ docType: 'rd_proposal', templateId: 'dhf.2750fbaf1f67d10c', version: '1.0.0' })
+  })
+})