feat: voeg geselecteerde PBI automatisch toe aan nieuwe sprint

Bij sprint-aanmaak wordt de pbi_id uit de selection-store als hidden
form-field meegestuurd. Server-side worden alle stories van die PBI
(zonder sprint) en hun taken aan de nieuwe sprint gekoppeld; stories
krijgen status IN_SPRINT met incrementele sort_order.

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

actions/sprints.ts

@@ -40,6 +40,7 @@ export async function createSprintAction(_prevState: unknown, formData: FormData
     sprint_goal: formData.get('sprint_goal'),
     start_date: formData.get('start_date'),
     end_date: formData.get('end_date'),
+    pbi_id: formData.get('pbi_id'),
   })
   if (!parsed.success) {
     return {
@@ -72,6 +73,35 @@ export async function createSprintAction(_prevState: unknown, formData: FormData
       }),
   )
 
+  if (parsed.data.pbi_id) {
+    const pbi = await prisma.pbi.findFirst({
+      where: { id: parsed.data.pbi_id, product_id: parsed.data.productId },
+      select: { id: true },
+    })
+    if (pbi) {
+      const stories = await prisma.story.findMany({
+        where: { pbi_id: pbi.id, sprint_id: null },
+        orderBy: [{ priority: 'asc' }, { sort_order: 'asc' }],
+        select: { id: true },
+      })
+      if (stories.length > 0) {
+        const storyIds = stories.map(s => s.id)
+        await prisma.$transaction([
+          ...stories.map((s, i) =>
+            prisma.story.update({
+              where: { id: s.id },
+              data: { sprint_id: sprint.id, status: 'IN_SPRINT', sort_order: i + 1 },
+            }),
+          ),
+          prisma.task.updateMany({
+            where: { story_id: { in: storyIds }, sprint_id: null },
+            data: { sprint_id: sprint.id },
+          }),
+        ])
+      }
+    }
+  }
+
   await setActiveSprintCookie(parsed.data.productId, sprint.id)
   revalidatePath(`/products/${parsed.data.productId}`)
   return { success: true, sprintId: sprint.id }

components/sprint/start-sprint-button.tsx

@@ -21,6 +21,7 @@ import {
   entityDialogHeaderClasses,
 } from '@/components/shared/entity-dialog-layout'
 import { createSprintAction } from '@/actions/sprints'
+import { useSelectionStore } from '@/stores/selection-store'
 
 interface StartSprintButtonProps {
   productId: string
@@ -44,6 +45,7 @@ export function StartSprintButton({ productId, isDemo = false }: StartSprintButt
   const [dirty, setDirty] = useState(false)
   const formRef = useRef<HTMLFormElement>(null)
   const router = useRouter()
+  const selectedPbiId = useSelectionStore((s) => s.selectedPbiId)
 
   const [state, formAction, pending] = useActionState<ActionResult | undefined, FormData>(
     async (_prev, fd) => {
@@ -92,6 +94,7 @@ export function StartSprintButton({ productId, isDemo = false }: StartSprintButt
             className="flex-1 overflow-y-auto px-6 py-6 space-y-6"
           >
             <input type="hidden" name="productId" value={productId} />
+            {selectedPbiId && <input type="hidden" name="pbi_id" value={selectedPbiId} />}
 
             <div className="space-y-1.5">
               <label className="text-sm font-medium text-foreground">

lib/schemas/sprint.ts

@@ -17,6 +17,11 @@ export const createSprintSchema = z
     sprint_goal: z.string().min(1, 'Sprint Goal is verplicht').max(500),
     start_date: dateField,
     end_date: dateField,
+    pbi_id: z
+      .string()
+      .nullable()
+      .optional()
+      .transform(v => (v && v.trim() !== '' ? v : null)),
   })
   .superRefine(validateDateOrder)