feat(P9.6): remove feature and release subtypes from general create task forms

src/components/CreateTaskModal.tsx

@@ -3,11 +3,11 @@ import api from '@/services/api'
 import type { Milestone, Project, Task } from '@/types'
 
 const TASK_TYPES = [
-  { value: 'story', label: 'Story', subtypes: ['feature', 'improvement', 'refactor'] },
+  { value: 'story', label: 'Story', subtypes: ['improvement', 'refactor'] },  // P9.6: 'feature' removed — must come from propose accept
   { value: 'issue', label: 'Issue', subtypes: ['infrastructure', 'performance', 'regression', 'security', 'user_experience', 'defect'] },
   { value: 'task', label: 'Task', subtypes: ['defect'] },
   { value: 'test', label: 'Test', subtypes: ['regression', 'security', 'smoke', 'stress'] },
-  { value: 'maintenance', label: 'Maintenance', subtypes: ['deploy', 'release'] },
+  { value: 'maintenance', label: 'Maintenance', subtypes: ['deploy'] },  // P9.6: 'release' removed — controlled via milestone flow
   { value: 'research', label: 'Research', subtypes: [] },
   { value: 'review', label: 'Review', subtypes: ['code_review', 'decision_review', 'function_review'] },
   { value: 'resolution', label: 'Resolution', subtypes: [] },

src/pages/CreateTaskPage.tsx

@@ -4,11 +4,11 @@ import api from '@/services/api'
 import type { Project, Milestone } from '@/types'
 
 const TASK_TYPES = [
-  { value: 'story', label: 'Story', subtypes: ['feature', 'improvement', 'refactor'] },
+  { value: 'story', label: 'Story', subtypes: ['improvement', 'refactor'] },  // P9.6: 'feature' removed — must come from propose accept
   { value: 'issue', label: 'Issue', subtypes: ['infrastructure', 'performance', 'regression', 'security', 'user_experience', 'defect'] },
   { value: 'task', label: 'Task', subtypes: ['defect'] },
   { value: 'test', label: 'Test', subtypes: ['regression', 'security', 'smoke', 'stress'] },
-  { value: 'maintenance', label: 'Maintenance', subtypes: ['deploy', 'release'] },
+  { value: 'maintenance', label: 'Maintenance', subtypes: ['deploy'] },  // P9.6: 'release' removed — controlled via milestone flow
   { value: 'research', label: 'Research', subtypes: [] },
   { value: 'review', label: 'Review', subtypes: ['code_review', 'decision_review', 'function_review'] },
   { value: 'resolution', label: 'Resolution', subtypes: [] },

src/pages/MilestoneDetailPage.tsx

@@ -45,6 +45,7 @@ export default function MilestoneDetailPage() {
   const [actionError, setActionError] = useState<string | null>(null)
   const [showCloseConfirm, setShowCloseConfirm] = useState(false)
   const [closeReason, setCloseReason] = useState('')
+  const [preflight, setPreflight] = useState<{ freeze?: { allowed: boolean; reason: string | null }; start?: { allowed: boolean; reason: string | null } } | null>(null)
 
   const fetchMilestone = () => {
     api.get<Milestone>(`/milestones/${id}`).then(({ data }) => {
@@ -55,11 +56,18 @@ export default function MilestoneDetailPage() {
           setProjectCode(proj.project_code || '')
         })
         api.get<ProjectMember[]>(`/projects/${data.project_id}/members`).then(({ data }) => setMembers(data)).catch(() => {})
+        fetchPreflight(data.project_id)
       }
     })
     api.get<MilestoneProgress>(`/milestones/${id}/progress`).then(({ data }) => setProgress(data)).catch(() => {})
   }
 
+  const fetchPreflight = (projectId: number) => {
+    api.get(`/projects/${projectId}/milestones/${id}/actions/preflight`)
+      .then(({ data }) => setPreflight(data))
+      .catch(() => setPreflight(null))
+  }
+
   useEffect(() => {
     fetchMilestone()
   }, [id])
@@ -113,6 +121,7 @@ export default function MilestoneDetailPage() {
       await api.post(`/projects/${project.id}/milestones/${milestone.id}/actions/${action}`, body ?? {})
       fetchMilestone()
       refreshMilestoneItems()
+      fetchPreflight(project.id)
     } catch (err: any) {
       const detail = err?.response?.data?.detail
       setActionError(typeof detail === 'string' ? detail : `${action} failed`)
@@ -164,22 +173,38 @@ export default function MilestoneDetailPage() {
         {!isTerminal && (
           <div style={{ display: 'flex', gap: 8, marginTop: 8, flexWrap: 'wrap', alignItems: 'center' }}>
             {msStatus === 'open' && (
-              <button
-                className="btn-primary"
-                disabled={actionLoading === 'freeze'}
-                onClick={handleFreeze}
-              >
-                {actionLoading === 'freeze' ? '⏳ Freezing...' : '🧊 Freeze'}
-              </button>
+              <span title={preflight?.freeze?.allowed === false ? preflight.freeze.reason ?? '' : ''}>
+                <button
+                  className="btn-primary"
+                  disabled={actionLoading === 'freeze' || preflight?.freeze?.allowed === false}
+                  onClick={handleFreeze}
+                  style={preflight?.freeze?.allowed === false ? { opacity: 0.5, cursor: 'not-allowed' } : {}}
+                >
+                  {actionLoading === 'freeze' ? '⏳ Freezing...' : '🧊 Freeze'}
+                </button>
+                {preflight?.freeze?.allowed === false && (
+                  <span className="text-dim" style={{ marginLeft: 8, fontSize: '0.85em' }}>
+                    ⚠ {preflight.freeze.reason}
+                  </span>
+                )}
+              </span>
             )}
             {msStatus === 'freeze' && (
-              <button
-                className="btn-primary"
-                disabled={actionLoading === 'start'}
-                onClick={handleStart}
-              >
-                {actionLoading === 'start' ? '⏳ Starting...' : '▶️ Start'}
-              </button>
+              <span title={preflight?.start?.allowed === false ? preflight.start.reason ?? '' : ''}>
+                <button
+                  className="btn-primary"
+                  disabled={actionLoading === 'start' || preflight?.start?.allowed === false}
+                  onClick={handleStart}
+                  style={preflight?.start?.allowed === false ? { opacity: 0.5, cursor: 'not-allowed' } : {}}
+                >
+                  {actionLoading === 'start' ? '⏳ Starting...' : '▶️ Start'}
+                </button>
+                {preflight?.start?.allowed === false && (
+                  <span className="text-dim" style={{ marginLeft: 8, fontSize: '0.85em' }}>
+                    ⚠ {preflight.start.reason}
+                  </span>
+                )}
+              </span>
             )}
             {(msStatus === 'open' || msStatus === 'freeze' || msStatus === 'undergoing') && (
               <>

src/pages/TaskDetailPage.tsx

@@ -49,14 +49,13 @@ export default function TaskDetailPage() {
     setComments(data)
   }
 
-  const doAction = async (actionName: string, newStatus: string, extra?: () => Promise<void>) => {
+  const doAction = async (actionName: string, newStatus: string, body?: Record<string, any>) => {
     setActionLoading(actionName)
     setActionError(null)
     try {
-      if (extra) await extra()
-      await api.post(`/tasks/${id}/transition?new_status=${newStatus}`)
+      await api.post(`/tasks/${id}/transition?new_status=${newStatus}`, body || {})
       await refreshTask()
-      // refresh comments too (finish adds one)
+      // refresh comments too (finish adds one via backend)
       const { data } = await api.get<Comment[]>(`/tasks/${id}/comments`)
       setComments(data)
     } catch (err: any) {
@@ -70,17 +69,16 @@ export default function TaskDetailPage() {
   const handleStart = () => doAction('start', 'undergoing')
   const handleFinishConfirm = async () => {
     if (!finishComment.trim()) return
-    await doAction('finish', 'completed', async () => {
-      await api.post('/comments', { content: finishComment, task_id: task!.id, author_id: user?.id || 1 })
-    })
+    await doAction('finish', 'completed', { comment: finishComment })
     setShowFinishModal(false)
     setFinishComment('')
   }
   const handleCloseConfirm = async () => {
+    const body: Record<string, any> = {}
     if (closeReason.trim()) {
-      await api.post('/comments', { content: `[Close reason] ${closeReason}`, task_id: task!.id, author_id: user?.id || 1 }).catch(() => {})
+      body.comment = `[Close reason] ${closeReason}`
     }
-    await doAction('close', 'closed')
+    await doAction('close', 'closed', body)
     setShowCloseModal(false)
     setCloseReason('')
   }
@@ -90,13 +88,27 @@ export default function TaskDetailPage() {
     () => members.find((m) => m.user_id === user?.id)?.role,
     [members, user?.id]
   )
-  const canEditTask = Boolean(task && project && user && (
+  const isAdmin = Boolean(user && (
     user.is_admin ||
-    user.id === project.owner_id ||
-    user.id === task.created_by_id ||
-    user.id === milestone?.created_by_id ||
+    (project && user.id === project.owner_id) ||
     currentMemberRole === 'admin'
   ))
+  // P5.7/P9.3: assignee-aware edit permission
+  const canEditTask = Boolean(task && project && user && (() => {
+    const st = task.status
+    // undergoing/completed/closed: no body edits
+    if (st === 'undergoing' || st === 'completed' || st === 'closed') return false
+    // open + assignee set: only assignee or admin
+    if (st === 'open' && task.assignee_id != null) {
+      return user.id === task.assignee_id || isAdmin
+    }
+    // open + no assignee, or pending: general permission
+    return (
+      isAdmin ||
+      user.id === task.created_by_id ||
+      user.id === milestone?.created_by_id
+    )
+  })())
 
   if (!task) return <div className="loading">Loading...</div>
 
@@ -115,7 +127,7 @@ export default function TaskDetailPage() {
           <span className="badge">{task.task_type}</span>{task.task_subtype && <span className="badge">{task.task_subtype}</span>}
           {task.tags && <span className="tags">{task.tags}</span>}
         </div>
-        {canEditTask && !isTerminal && task.status !== 'undergoing' && (
+        {canEditTask && (
           <button className="btn-transition" style={{ marginTop: 8 }} onClick={() => setShowEditTask(true)}>Edit Task</button>
         )}
       </div>