feat(web): workspace selector on issue/requirement detail

web/src/api/projects.ts

@@ -25,6 +25,7 @@ export interface Requirement {
   phase: Phase
   status: Status
   owner_id: string
+  workspace_id: string | null
   closed_at?: string | null
   created_at: string
   updated_at: string
@@ -34,6 +35,7 @@ export interface Issue {
   id: string
   project_id: string
   requirement_id: string | null
+  workspace_id: string | null
   number: number
   title: string
   description: string
@@ -92,7 +94,13 @@ export const projectsApi = {
   updateRequirement: (
     slug: string,
     number: number,
-    body: Partial<{ title: string; description: string; owner_id: string }>,
+    body: Partial<{
+      title: string
+      description: string
+      owner_id: string
+      // 三态：未传字段 / 显式 null（detach） / "<uuid>"（attach）
+      workspace_id: string | null
+    }>,
   ) =>
     request<Requirement>(`/api/v1/projects/${enc(slug)}/requirements/${number}`, {
       method: 'PATCH',
@@ -141,6 +149,8 @@ export const projectsApi = {
       description: string
       // 三态：未传字段 / 显式 null（detach） / number（attach/move）
       requirement_number: number | null
+      // 三态：未传字段 / 显式 null（detach） / "<uuid>"（attach）
+      workspace_id: string | null
     }>,
   ) =>
     request<Issue>(`/api/v1/projects/${enc(slug)}/issues/${number}`, {

web/src/views/projects/IssueDetailView.vue

@@ -58,6 +58,17 @@
           />
         </NCard>
 
+        <!-- Workspace card -->
+        <NCard title="工作区">
+          <NSelect
+            :value="issue.workspace_id"
+            :options="workspaceOptions"
+            placeholder="未关联"
+            clearable
+            @update:value="onWorkspaceChange"
+          />
+        </NCard>
+
         <!-- Assignee card -->
         <NCard title="指派">
           <div class="flex items-center gap-4">
@@ -118,11 +129,13 @@ import { NCard, NButton, NTag, NSpin, NSelect } from 'naive-ui'
 import AppShell from '@/layouts/AppShell.vue'
 import { projectsApi } from '@/api/projects'
 import { useAuthStore } from '@/stores/auth'
+import { useWorkspacesStore } from '@/stores/workspaces'
 import type { Issue, Requirement } from '@/api/projects'
 
 const route = useRoute()
 const router = useRouter()
 const auth = useAuthStore()
+const wsStore = useWorkspacesStore()
 
 const slug = route.params.slug as string
 const number = Number(route.params.number)
@@ -138,6 +151,10 @@ const requirementOptions = computed(() =>
   requirements.value.map((r) => ({ label: `R-${r.number}: ${r.title}`, value: r.number })),
 )
 
+const workspaceOptions = computed(() =>
+  wsStore.list.map((w) => ({ label: `${w.name} (${w.slug})`, value: w.id })),
+)
+
 const mountedRequirementNumber = computed<number | null>(() => {
   if (!issue.value?.requirement_id) return null
   const req = requirements.value.find((r) => r.id === issue.value!.requirement_id)
@@ -150,6 +167,7 @@ async function fetchData() {
     const [fetchedIssue, reqs] = await Promise.all([
       projectsApi.getIssue(slug, number),
       projectsApi.listRequirements(slug),
+      wsStore.fetchByProject(slug),
     ])
     issue.value = fetchedIssue
     requirements.value = reqs.items
@@ -163,6 +181,11 @@ async function onMountChange(v: number | null) {
   issue.value = await projectsApi.updateIssue(slug, number, { requirement_number: v })
 }
 
+async function onWorkspaceChange(v: string | null) {
+  if (!issue.value) return
+  issue.value = await projectsApi.updateIssue(slug, number, { workspace_id: v })
+}
+
 async function onClose() {
   toggling.value = true
   try {

web/src/views/projects/RequirementDetailView.vue

@@ -85,6 +85,17 @@
           </p>
         </NCard>
 
+        <!-- Workspace card -->
+        <NCard title="工作区">
+          <NSelect
+            :value="data.requirement.workspace_id"
+            :options="workspaceOptions"
+            placeholder="未关联"
+            clearable
+            @update:value="onWorkspaceChange"
+          />
+        </NCard>
+
         <!-- Linked Issues -->
         <NCard title="关联 Issue">
           <NList
@@ -129,7 +140,7 @@
 </template>
 
 <script setup lang="ts">
-import { ref, onMounted } from 'vue'
+import { ref, computed, onMounted } from 'vue'
 import { useRoute, useRouter } from 'vue-router'
 import { useDialog } from 'naive-ui'
 import {
@@ -137,6 +148,7 @@ import {
   NButton,
   NTag,
   NSpin,
+  NSelect,
   NList,
   NListItem,
   NThing,
@@ -145,6 +157,7 @@ import {
 import AppShell from '@/layouts/AppShell.vue'
 import { projectsApi } from '@/api/projects'
 import { useRequirementsStore } from '@/stores/requirements'
+import { useWorkspacesStore } from '@/stores/workspaces'
 import type { Phase, RequirementDetail } from '@/api/projects'
 
 const PHASES: Phase[] = ['planning', 'auditing', 'implementing', 'reviewing', 'done']
@@ -161,6 +174,7 @@ const route = useRoute()
 const router = useRouter()
 const dialog = useDialog()
 const store = useRequirementsStore()
+const wsStore = useWorkspacesStore()
 
 const slug = route.params.slug as string
 const number = Number(route.params.number)
@@ -169,15 +183,30 @@ const loading = ref(false)
 const toggling = ref(false)
 const data = ref<RequirementDetail | null>(null)
 
+const workspaceOptions = computed(() =>
+  wsStore.list.map((w) => ({ label: `${w.name} (${w.slug})`, value: w.id })),
+)
+
 async function fetchData() {
   loading.value = true
   try {
-    data.value = await projectsApi.getRequirement(slug, number)
+    const [detail] = await Promise.all([
+      projectsApi.getRequirement(slug, number),
+      wsStore.fetchByProject(slug),
+    ])
+    data.value = detail
   } finally {
     loading.value = false
   }
 }
 
+async function onWorkspaceChange(v: string | null) {
+  if (!data.value) return
+  await projectsApi.updateRequirement(slug, number, { workspace_id: v })
+  // Re-fetch to keep data.requirement and data.issues consistent (mirrors onPhaseClick)
+  data.value = await projectsApi.getRequirement(slug, number)
+}
+
 function onPhaseClick(target: Phase) {
   if (!data.value || data.value.requirement.phase === target) return
   const targetLabel = PHASE_LABELS[target]