feat(ST-1109.4): support status in PBI create/update actions

- Optional status field in Zod schemas (lowercase API: ready/blocked/done)
- pbiStatusFromApi() maps to DB enum before persistence
- Status omitted on create => Prisma @default(READY) takes effect
- Update preserves existing status when not provided
- Demo-check unchanged

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

actions/pbis.ts

@@ -9,6 +9,7 @@ import { SessionData, sessionOptions } from '@/lib/session'
 import { getAccessibleProduct } from '@/lib/product-access'
 import { isValidCode, MAX_CODE_LENGTH, normalizeCode } from '@/lib/code'
 import { createWithCodeRetry, generateNextPbiCode } from '@/lib/code-server'
+import { pbiStatusFromApi } from '@/lib/task-status'
 
 async function getSession() {
   return getIronSession<SessionData>(await cookies(), sessionOptions)
@@ -16,12 +17,15 @@ async function getSession() {
 
 const codeField = z.string().max(MAX_CODE_LENGTH).optional()
 
+const statusField = z.enum(['ready', 'blocked', 'done']).optional()
+
 const createPbiSchema = z.object({
   productId: z.string(),
   code: codeField,
   title: z.string().min(1, 'Titel is verplicht').max(200),
   description: z.string().max(2000).optional(),
   priority: z.coerce.number().int().min(1).max(4),
+  status: statusField,
 })
 
 const updatePbiSchema = z.object({
@@ -30,6 +34,7 @@ const updatePbiSchema = z.object({
   title: z.string().min(1, 'Titel is verplicht').max(200),
   description: z.string().max(2000).optional(),
   priority: z.coerce.number().int().min(1).max(4),
+  status: statusField,
 })
 
 export async function createPbiAction(_prevState: unknown, formData: FormData) {
@@ -43,6 +48,7 @@ export async function createPbiAction(_prevState: unknown, formData: FormData) {
     title: formData.get('title'),
     description: formData.get('description') || undefined,
     priority: formData.get('priority'),
+    status: (formData.get('status') as string) || undefined,
   })
   if (!parsed.success) return { error: parsed.error.flatten().fieldErrors }
 
@@ -64,6 +70,8 @@ export async function createPbiAction(_prevState: unknown, formData: FormData) {
   })
   const sort_order = (last?.sort_order ?? 0) + 1.0
 
+  const status = parsed.data.status ? pbiStatusFromApi(parsed.data.status) ?? undefined : undefined
+
   const insert = (code: string | null) =>
     prisma.pbi.create({
       data: {
@@ -73,6 +81,7 @@ export async function createPbiAction(_prevState: unknown, formData: FormData) {
         description: parsed.data.description ?? null,
         priority: parsed.data.priority,
         sort_order,
+        ...(status ? { status } : {}),
       },
     })
 
@@ -103,6 +112,7 @@ export async function updatePbiAction(_prevState: unknown, formData: FormData) {
     title: formData.get('title'),
     description: formData.get('description') || undefined,
     priority: formData.get('priority'),
+    status: (formData.get('status') as string) || undefined,
   })
   if (!parsed.success) return { error: parsed.error.flatten().fieldErrors }
 
@@ -125,6 +135,8 @@ export async function updatePbiAction(_prevState: unknown, formData: FormData) {
     if (dup) return { error: { code: ['Deze code is al in gebruik binnen dit product'] } }
   }
 
+  const status = parsed.data.status ? pbiStatusFromApi(parsed.data.status) ?? undefined : undefined
+
   await prisma.pbi.update({
     where: { id: parsed.data.id },
     data: {
@@ -132,6 +144,7 @@ export async function updatePbiAction(_prevState: unknown, formData: FormData) {
       title: parsed.data.title,
       description: parsed.data.description ?? null,
       priority: parsed.data.priority,
+      ...(status ? { status } : {}),
     },
   })