diff --git a/clinical-web/README.md b/clinical-web/README.md
index 54f9035..87c9782 100644
--- a/clinical-web/README.md
+++ b/clinical-web/README.md
@@ -84,7 +84,7 @@ TanStack Vue Query、PDF 预览、报表图表、自动化测试和签字板适
 
 ## 当前状态
 
-已完成 Vite 基础初始化、路由、Pinia、原型主题 CSS、登录页和医护端整体布局。当前所有业务 View 暂时保留文字占位，登录使用演示认证逻辑，尚未接入真实后端。
+已完成 Vite 基础初始化、路由、Pinia、原型主题 CSS、登录页、首页、签署工作台第一版 Mock 和文档库管理页面。报表、用户权限、文档权限和系统设置仍保留页面骨架；登录和签署流程使用演示数据，尚未接入真实后端。
 
 ## 当前路由结构
 
@@ -108,6 +108,11 @@ ClinicalLayout
 
 页面目录按业务域组织：`auth` 保留登录页；工作台页面位于 `views/workbench`；管理页面位于 `views/management`。每个具体页面目录都有 `index.vue` 入口和 `components` 目录，用于继续拆分当前页面组件。
 
+跨页面复用的业务组件和 composable 不放在具体 View 目录中：
+
+- `components/signing/NewSigningTaskDialog.vue`：新增签署任务公共弹窗，供签署工作台和文档库管理复用；
+- `composables/useSigningTaskForm.ts`：封装患者定位、就诊选择、模板选择、签署方式、校验和任务提交状态。
+
 ## API 与类型约定
 
 API 模块与页面按业务域对应。工作台页面使用 `api/workbench` 下的页面文件，管理页面使用 `api/management` 下的直接文件：
diff --git a/clinical-web/src/views/workbench/signing/components/NewSigningTaskDialog.vue b/clinical-web/src/components/signing/NewSigningTaskDialog.vue
similarity index 76%
rename from clinical-web/src/views/workbench/signing/components/NewSigningTaskDialog.vue
rename to clinical-web/src/components/signing/NewSigningTaskDialog.vue
index e5c3b53..33fab08 100644
--- a/clinical-web/src/views/workbench/signing/components/NewSigningTaskDialog.vue
+++ b/clinical-web/src/components/signing/NewSigningTaskDialog.vue
@@ -1,29 +1,14 @@
 <script setup lang="ts">
-import { computed, nextTick, reactive, ref, watch } from 'vue'
+import { computed, nextTick, ref, watch } from 'vue'
 import { ElMessage } from 'element-plus'
 
-import { createSigningTask, getPatientProfile, getSigningTemplates } from '@/api/workbench/signing'
-import type {
-  PatientProfile,
-  PatientVisit,
-  SigningMethod,
-  SigningTaskRecord,
-  SigningTemplate,
-} from '@/api/workbench/types'
+import type { SigningTaskRecord, SigningTemplate } from '@/api/workbench/types'
+import { useSigningTaskForm } from '@/composables/useSigningTaskForm'
 import { useAppStore } from '@/stores/app'
 
-interface TemplateCategoryGroup {
-  name: string
-  templates: SigningTemplate[]
-}
-
-interface TemplateDepartmentGroup {
-  name: string
-  categories: TemplateCategoryGroup[]
-}
-
 const props = defineProps<{
   visible: boolean
+  initialTemplate?: SigningTemplate | null
 }>()
 
 const emit = defineEmits<{
@@ -33,231 +18,53 @@ const emit = defineEmits<{
 
 const appStore = useAppStore()
 const patientInput = ref<HTMLInputElement | null>(null)
-const patientId = ref('')
-const patient = ref<PatientProfile | null>(null)
-const visits = ref<PatientVisit[]>([])
-const templates = ref<SigningTemplate[]>([])
-const documentSearch = ref('')
-const selectedTemplateId = ref('')
-const selectedVisitId = ref('')
-const method = ref<SigningMethod>('pad')
-const smsPhone = ref('')
-const patientPhoneRevealed = ref(false)
-const loadingTemplates = ref(false)
-const locating = ref(false)
-const submitting = ref(false)
+const initialTemplate = computed(() => props.initialTemplate ?? null)
 
-const errors = reactive({
-  patient: '',
-  visit: '',
-  document: '',
-  phone: '',
+const {
+  documentSearch,
+  errors,
+  filteredTemplateGroups,
+  loadingTemplates,
+  loadTemplates,
+  locatePatient,
+  locating,
+  maskPhone,
+  method,
+  patient,
+  patientId,
+  patientPhoneRevealed,
+  resetForNextTask,
+  resetForm,
+  selectMethod,
+  selectTemplate,
+  selectVisit,
+  selectedTemplate,
+  selectedTemplateId,
+  selectedVisit,
+  selectedVisitId,
+  smsPhone,
+  submit: submitForm,
+  submitting,
+  togglePhone,
+  visits,
+} = useSigningTaskForm({
+  campus: computed(() => appStore.selectedCampus),
+  initialTemplate,
 })
 
-const selectedVisit = computed(
-  () => visits.value.find((visit) => visit.id === selectedVisitId.value) ?? null,
-)
+async function submitTask(keepOpen: boolean) {
+  try {
+    const task = await submitForm()
 
-const selectedTemplate = computed(
-  () => templates.value.find((template) => template.id === selectedTemplateId.value) ?? null,
-)
-
-const filteredTemplateGroups = computed<TemplateDepartmentGroup[]>(() => {
-  const keyword = documentSearch.value.trim().toLowerCase()
-  const grouped = new Map<string, Map<string, SigningTemplate[]>>()
-
-  templates.value.forEach((template) => {
-    const matches =
-      !keyword ||
-      [template.name, template.code, template.department, template.category]
-        .join(' ')
-        .toLowerCase()
-        .includes(keyword)
-
-    if (!matches) {
+    if (!task) {
       return
     }
 
-    const categories = grouped.get(template.department) ?? new Map<string, SigningTemplate[]>()
-    const categoryTemplates = categories.get(template.category) ?? []
-    categoryTemplates.push(template)
-    categories.set(template.category, categoryTemplates)
-    grouped.set(template.department, categories)
-  })
-
-  return [...grouped.entries()].map(([department, categories]) => ({
-    name: department,
-    categories: [...categories.entries()].map(([category, categoryTemplates]) => ({
-      name: category,
-      templates: categoryTemplates,
-    })),
-  }))
-})
-
-function clearErrors() {
-  errors.patient = ''
-  errors.visit = ''
-  errors.document = ''
-  errors.phone = ''
-}
-
-function resetForm() {
-  patientId.value = ''
-  patient.value = null
-  visits.value = []
-  documentSearch.value = ''
-  selectedTemplateId.value = ''
-  selectedVisitId.value = ''
-  method.value = 'pad'
-  smsPhone.value = ''
-  patientPhoneRevealed.value = false
-  clearErrors()
-}
-
-async function loadTemplates() {
-  if (templates.value.length) {
-    return
-  }
-
-  loadingTemplates.value = true
-
-  try {
-    templates.value = await getSigningTemplates()
-  } catch {
-    ElMessage.error('文档模板加载失败，请稍后重试')
-  } finally {
-    loadingTemplates.value = false
-  }
-}
-
-async function locatePatient() {
-  const keyword = patientId.value.trim()
-  errors.patient = ''
-  errors.visit = ''
-  patient.value = null
-  visits.value = []
-  selectedVisitId.value = ''
-  selectedTemplateId.value = ''
-
-  if (!keyword) {
-    errors.patient = '请输入患者 ID、门诊号或住院号'
-    return
-  }
-
-  locating.value = true
-
-  try {
-    const profile = await getPatientProfile(keyword)
-
-    if (!profile) {
-      errors.patient = '未找到该患者，请核对输入内容'
-      smsPhone.value = ''
-      return
-    }
-
-    patient.value = profile
-    visits.value = profile.visits
-    selectedVisitId.value =
-      profile.visits.find((visit) => visit.isCurrent)?.id ?? profile.visits[0]?.id ?? ''
-    smsPhone.value = profile.phone
-  } catch {
-    errors.patient = '患者信息查询失败，请稍后重试'
-  } finally {
-    locating.value = false
-  }
-}
-
-function selectVisit(visit: PatientVisit) {
-  selectedVisitId.value = visit.id
-  errors.visit = ''
-}
-
-function selectTemplate(template: SigningTemplate) {
-  selectedTemplateId.value = template.id
-  errors.document = ''
-
-  if (!template.supportedMethods.includes(method.value)) {
-    method.value = template.supportedMethods[0] ?? 'pad'
-  }
-}
-
-function selectMethod(nextMethod: SigningMethod) {
-  if (selectedTemplate.value && !selectedTemplate.value.supportedMethods.includes(nextMethod)) {
-    return
-  }
-
-  method.value = nextMethod
-  errors.phone = ''
-}
-
-function maskPhone(value: string) {
-  if (value.length < 7) {
-    return value
-  }
-
-  return `${value.slice(0, 3)}****${value.slice(-4)}`
-}
-
-function togglePhone() {
-  patientPhoneRevealed.value = !patientPhoneRevealed.value
-  ElMessage.info('明文查看已记录审计日志')
-}
-
-function validate() {
-  clearErrors()
-  let valid = true
-
-  if (!patient.value) {
-    errors.patient = '请先定位患者'
-    valid = false
-  }
-
-  if (!selectedVisit.value) {
-    errors.visit = '请选择关联就诊'
-    valid = false
-  }
-
-  if (!selectedTemplate.value) {
-    errors.document = '请至少选择一份文档'
-    valid = false
-  }
-
-  if (method.value === 'sms' && !smsPhone.value.trim()) {
-    errors.phone = '请确认短信接收手机号'
-    valid = false
-  }
-
-  return valid
-}
-
-async function submit(keepOpen: boolean) {
-  if (!validate() || !patient.value || !selectedVisit.value || !selectedTemplate.value) {
-    return
-  }
-
-  submitting.value = true
-
-  try {
-    const task = await createSigningTask({
-      campus: appStore.selectedCampus,
-      patientId: patient.value.id,
-      visitId: selectedVisit.value.id,
-      documentId: selectedTemplate.value.id,
-      documentName: selectedTemplate.value.name,
-      method: method.value,
-      visitType: selectedVisit.value.type,
-      visitNo: selectedVisit.value.visitNo,
-      department: selectedVisit.value.department,
-      phone: method.value === 'sms' ? smsPhone.value.trim() : undefined,
-    })
-
     emit('created', task)
-    ElMessage.success(`已创建 1 个签署任务${method.value === 'sms' ? '，短信已发送' : ''}`)
+    ElMessage.success(`已创建 1 个签署任务${task.method === 'sms' ? '，短信已发送' : ''}`)
 
     if (keepOpen) {
-      selectedTemplateId.value = ''
-      documentSearch.value = ''
-      errors.document = ''
+      resetForNextTask()
       await nextTick()
       patientInput.value?.focus()
       return
@@ -266,8 +73,6 @@ async function submit(keepOpen: boolean) {
     emit('close')
   } catch {
     ElMessage.error('签署任务创建失败，请稍后重试')
-  } finally {
-    submitting.value = false
   }
 }
 
@@ -509,11 +314,16 @@ watch(
             type="button"
             class="action-button action-button--ghost"
             :disabled="submitting"
-            @click="submit(true)"
+            @click="submitTask(true)"
           >
             提交并继续新增
           </button>
-          <button type="button" class="action-button" :disabled="submitting" @click="submit(false)">
+          <button
+            type="button"
+            class="action-button"
+            :disabled="submitting"
+            @click="submitTask(false)"
+          >
             {{ submitting ? '提交中…' : '提交任务' }}
           </button>
         </footer>
diff --git a/clinical-web/src/composables/useSigningTaskForm.ts b/clinical-web/src/composables/useSigningTaskForm.ts
new file mode 100644
index 0000000..c542116
--- /dev/null
+++ b/clinical-web/src/composables/useSigningTaskForm.ts
@@ -0,0 +1,307 @@
+import { computed, reactive, ref, toValue, type MaybeRefOrGetter } from 'vue'
+import { ElMessage } from 'element-plus'
+
+import { createSigningTask, getPatientProfile, getSigningTemplates } from '@/api/workbench/signing'
+import type {
+  PatientProfile,
+  PatientVisit,
+  SigningMethod,
+  SigningTaskRecord,
+  SigningTemplate,
+  WorkbenchCampus,
+} from '@/api/workbench/types'
+
+export interface UseSigningTaskFormOptions {
+  campus: MaybeRefOrGetter<WorkbenchCampus>
+  initialTemplate?: MaybeRefOrGetter<SigningTemplate | null | undefined>
+}
+
+interface TemplateCategoryGroup {
+  name: string
+  templates: SigningTemplate[]
+}
+
+interface TemplateDepartmentGroup {
+  name: string
+  categories: TemplateCategoryGroup[]
+}
+
+export function useSigningTaskForm(options: UseSigningTaskFormOptions) {
+  const patientId = ref('')
+  const patient = ref<PatientProfile | null>(null)
+  const visits = ref<PatientVisit[]>([])
+  const templates = ref<SigningTemplate[]>([])
+  const documentSearch = ref('')
+  const selectedTemplateId = ref('')
+  const selectedVisitId = ref('')
+  const method = ref<SigningMethod>('pad')
+  const smsPhone = ref('')
+  const patientPhoneRevealed = ref(false)
+  const loadingTemplates = ref(false)
+  const locating = ref(false)
+  const submitting = ref(false)
+
+  const errors = reactive({
+    patient: '',
+    visit: '',
+    document: '',
+    phone: '',
+  })
+
+  const selectedVisit = computed(
+    () => visits.value.find((visit) => visit.id === selectedVisitId.value) ?? null,
+  )
+
+  const selectedTemplate = computed(
+    () => templates.value.find((template) => template.id === selectedTemplateId.value) ?? null,
+  )
+
+  const filteredTemplateGroups = computed<TemplateDepartmentGroup[]>(() => {
+    const keyword = documentSearch.value.trim().toLowerCase()
+    const grouped = new Map<string, Map<string, SigningTemplate[]>>()
+
+    templates.value.forEach((template) => {
+      const matches =
+        !keyword ||
+        [template.name, template.code, template.department, template.category]
+          .join(' ')
+          .toLowerCase()
+          .includes(keyword)
+
+      if (!matches) {
+        return
+      }
+
+      const categories = grouped.get(template.department) ?? new Map<string, SigningTemplate[]>()
+      const categoryTemplates = categories.get(template.category) ?? []
+      categoryTemplates.push(template)
+      categories.set(template.category, categoryTemplates)
+      grouped.set(template.department, categories)
+    })
+
+    return [...grouped.entries()].map(([department, categories]) => ({
+      name: department,
+      categories: [...categories.entries()].map(([category, categoryTemplates]) => ({
+        name: category,
+        templates: categoryTemplates,
+      })),
+    }))
+  })
+
+  function getInitialTemplate() {
+    return options.initialTemplate ? (toValue(options.initialTemplate) ?? null) : null
+  }
+
+  function includeInitialTemplate() {
+    const initialTemplate = getInitialTemplate()
+
+    if (
+      initialTemplate &&
+      !templates.value.some((template) => template.id === initialTemplate.id)
+    ) {
+      templates.value = [initialTemplate, ...templates.value]
+    }
+  }
+
+  function clearErrors() {
+    errors.patient = ''
+    errors.visit = ''
+    errors.document = ''
+    errors.phone = ''
+  }
+
+  function resetForm() {
+    const initialTemplate = getInitialTemplate()
+
+    patientId.value = ''
+    patient.value = null
+    visits.value = []
+    documentSearch.value = ''
+    selectedTemplateId.value = initialTemplate?.id ?? ''
+    selectedVisitId.value = ''
+    method.value = initialTemplate?.supportedMethods[0] ?? 'pad'
+    smsPhone.value = ''
+    patientPhoneRevealed.value = false
+    clearErrors()
+  }
+
+  function resetForNextTask() {
+    const initialTemplate = getInitialTemplate()
+
+    documentSearch.value = ''
+    selectedTemplateId.value = initialTemplate?.id ?? ''
+    method.value = initialTemplate?.supportedMethods[0] ?? method.value
+    errors.document = ''
+  }
+
+  async function loadTemplates() {
+    if (!templates.value.length) {
+      loadingTemplates.value = true
+
+      try {
+        templates.value = await getSigningTemplates()
+      } catch {
+        ElMessage.error('文档模板加载失败，请稍后重试')
+      } finally {
+        loadingTemplates.value = false
+      }
+    }
+
+    includeInitialTemplate()
+  }
+
+  async function locatePatient() {
+    const keyword = patientId.value.trim()
+    errors.patient = ''
+    errors.visit = ''
+    patient.value = null
+    visits.value = []
+    selectedVisitId.value = ''
+    selectedTemplateId.value = getInitialTemplate()?.id ?? ''
+
+    if (!keyword) {
+      errors.patient = '请输入患者 ID、门诊号或住院号'
+      return
+    }
+
+    locating.value = true
+
+    try {
+      const profile = await getPatientProfile(keyword)
+
+      if (!profile) {
+        errors.patient = '未找到该患者，请核对输入内容'
+        smsPhone.value = ''
+        return
+      }
+
+      patient.value = profile
+      visits.value = profile.visits
+      selectedVisitId.value =
+        profile.visits.find((visit) => visit.isCurrent)?.id ?? profile.visits[0]?.id ?? ''
+      smsPhone.value = profile.phone
+    } catch {
+      errors.patient = '患者信息查询失败，请稍后重试'
+    } finally {
+      locating.value = false
+    }
+  }
+
+  function selectVisit(visit: PatientVisit) {
+    selectedVisitId.value = visit.id
+    errors.visit = ''
+  }
+
+  function selectTemplate(template: SigningTemplate) {
+    selectedTemplateId.value = template.id
+    errors.document = ''
+
+    if (!template.supportedMethods.includes(method.value)) {
+      method.value = template.supportedMethods[0] ?? 'pad'
+    }
+  }
+
+  function selectMethod(nextMethod: SigningMethod) {
+    if (selectedTemplate.value && !selectedTemplate.value.supportedMethods.includes(nextMethod)) {
+      return
+    }
+
+    method.value = nextMethod
+    errors.phone = ''
+  }
+
+  function maskPhone(value: string) {
+    if (value.length < 7) {
+      return value
+    }
+
+    return `${value.slice(0, 3)}****${value.slice(-4)}`
+  }
+
+  function togglePhone() {
+    patientPhoneRevealed.value = !patientPhoneRevealed.value
+    ElMessage.info('明文查看已记录审计日志')
+  }
+
+  function validate() {
+    clearErrors()
+    let valid = true
+
+    if (!patient.value) {
+      errors.patient = '请先定位患者'
+      valid = false
+    }
+
+    if (!selectedVisit.value) {
+      errors.visit = '请选择关联就诊'
+      valid = false
+    }
+
+    if (!selectedTemplate.value) {
+      errors.document = '请至少选择一份文档'
+      valid = false
+    }
+
+    if (method.value === 'sms' && !smsPhone.value.trim()) {
+      errors.phone = '请确认短信接收手机号'
+      valid = false
+    }
+
+    return valid
+  }
+
+  async function submit(): Promise<SigningTaskRecord | null> {
+    if (!validate() || !patient.value || !selectedVisit.value || !selectedTemplate.value) {
+      return null
+    }
+
+    submitting.value = true
+
+    try {
+      return await createSigningTask({
+        campus: toValue(options.campus),
+        patientId: patient.value.id,
+        visitId: selectedVisit.value.id,
+        documentId: selectedTemplate.value.id,
+        documentName: selectedTemplate.value.name,
+        method: method.value,
+        visitType: selectedVisit.value.type,
+        visitNo: selectedVisit.value.visitNo,
+        department: selectedVisit.value.department,
+        phone: method.value === 'sms' ? smsPhone.value.trim() : undefined,
+      })
+    } finally {
+      submitting.value = false
+    }
+  }
+
+  return {
+    documentSearch,
+    errors,
+    filteredTemplateGroups,
+    loadingTemplates,
+    loadTemplates,
+    locatePatient,
+    locating,
+    maskPhone,
+    method,
+    patient,
+    patientId,
+    patientPhoneRevealed,
+    resetForNextTask,
+    resetForm,
+    selectMethod,
+    selectTemplate,
+    selectVisit,
+    selectedTemplate,
+    selectedTemplateId,
+    selectedVisit,
+    selectedVisitId,
+    smsPhone,
+    submit,
+    submitting,
+    templates,
+    togglePhone,
+    visits,
+  }
+}
diff --git a/clinical-web/src/views/management/documents/index.vue b/clinical-web/src/views/management/documents/index.vue
index 69d6b34..bd84593 100644
--- a/clinical-web/src/views/management/documents/index.vue
+++ b/clinical-web/src/views/management/documents/index.vue
@@ -2,6 +2,9 @@
 import { computed, onMounted, reactive, ref } from 'vue'
 import { ElMessage } from 'element-plus'
 
+import NewSigningTaskDialog from '@/components/signing/NewSigningTaskDialog.vue'
+import type { SigningTemplate } from '@/api/workbench/types'
+
 import DocumentFilterTabs from './components/DocumentFilterTabs.vue'
 import DocumentLibraryHeader from './components/DocumentLibraryHeader.vue'
 import DocumentPreviewDialog from './components/DocumentPreviewDialog.vue'
@@ -18,6 +21,8 @@ import type {
 const loading = ref(true)
 const library = ref<DocumentDepartment[]>([])
 const selectedTemplate = ref<DocumentTemplate | null>(null)
+const signingTemplate = ref<SigningTemplate | null>(null)
+const signingDialogVisible = ref(false)
 
 const filters = reactive<DocumentFilterForm>({
   keyword: '',
@@ -96,8 +101,27 @@ function showEditMessage(template: DocumentTemplate) {
   ElMessage.info('原型演示：编辑模板《' + template.name + '》')
 }
 
-function showInitiateMessage(template: DocumentTemplate) {
-  ElMessage.info('已选择《' + template.name + '》，签署工作台暂未实现')
+function toSigningTemplate(template: DocumentTemplate): SigningTemplate {
+  return {
+    id: template.id,
+    name: template.name,
+    code: template.code,
+    department: template.department,
+    category: template.category,
+    description: template.description,
+    supportedMethods: ['pad', 'sms'],
+  }
+}
+
+function openSigningDialog(template: DocumentTemplate) {
+  closePreview()
+  signingTemplate.value = toSigningTemplate(template)
+  signingDialogVisible.value = true
+}
+
+function closeSigningDialog() {
+  signingDialogVisible.value = false
+  signingTemplate.value = null
 }
 
 function clearFilters() {
@@ -106,8 +130,7 @@ function clearFilters() {
 }
 
 function useTemplate(template: DocumentTemplate) {
-  closePreview()
-  ElMessage.info('原型演示：从模板《' + template.name + '》发起签署')
+  openSigningDialog(template)
 }
 
 onMounted(loadLibrary)
@@ -146,7 +169,7 @@ onMounted(loadLibrary)
         :template="template"
         @preview="handlePreview"
         @edit="showEditMessage"
-        @initiate="showInitiateMessage"
+        @initiate="openSigningDialog"
       />
     </div>
 
@@ -169,6 +192,11 @@ onMounted(loadLibrary)
       @close="closePreview"
       @use="useTemplate"
     />
+    <NewSigningTaskDialog
+      :visible="signingDialogVisible"
+      :initial-template="signingTemplate"
+      @close="closeSigningDialog"
+    />
   </section>
 </template>
 
diff --git a/clinical-web/src/views/workbench/signing/index.vue b/clinical-web/src/views/workbench/signing/index.vue
index 099d5cf..2c5300b 100644
--- a/clinical-web/src/views/workbench/signing/index.vue
+++ b/clinical-web/src/views/workbench/signing/index.vue
@@ -22,9 +22,9 @@ import type {
   VisitType,
   WorkbenchCampus,
 } from '@/api/workbench/types'
+import NewSigningTaskDialog from '@/components/signing/NewSigningTaskDialog.vue'
 import { useAppStore } from '@/stores/app'
 
-import NewSigningTaskDialog from './components/NewSigningTaskDialog.vue'
 import OnlineSigningDialog from './components/OnlineSigningDialog.vue'
 import SignaturePadDialog from './components/SignaturePadDialog.vue'
 import SigningFilterBar from './components/SigningFilterBar.vue'