Sprint: Stories en taken krijgen één voorspelbare volgorde gekoppeld aan hun code; drag-and-drop herordening voor stories/taken verdwijnt, priority wordt puur label. (#201)

* feat(code): add parseCodeNumber helper to lib/code.ts

Pure helper that extracts the trailing numeric sequence from a code string
(ST-007 → 7, T-42 → 42). Non-conforming codes fall back to Number.MAX_SAFE_INTEGER
so they sort to the end. Includes 5 unit tests.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* feat(tasks): add code field to BacklogTask type and all task selects

Adds `code: string | null` to BacklogTask interface and includes it in
all Prisma task.findMany selects (backlog API, stories tasks API, page
hydration routes). Updates coerceTaskPayload and test fixtures to match.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* feat(sort-order): derive story/task sort_order from parseCodeNumber(code)

All create paths (createStoryAction, saveTask, createTaskAction,
materializeIdeaPlanAction) and code-edit paths (updateStoryAction, saveTask
update) now set sort_order = parseCodeNumber(code) instead of last+1.
Removes stale last-record queries from create paths.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* fix(sort-order): decouple sprint membership actions from sort_order

createSprintAction and addStoryToSprintAction no longer write sort_order
when adding stories to a sprint. sort_order is derived from code via
parseCodeNumber, so membership should only set sprint_id + status.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* refactor(ordering): remove priority from all story/task orderBy

Story- en taak-ordering is nu puur sort_order asc (created_at als
tiebreaker). PBI-ordering (priority + sort_order) blijft ongewijzigd.

Gewijzigd: backlog/route, pbis/stories/route, claude-context/route,
next-story/route, workspace/route, tasks/route, sprint-runs (query +
in-memory sort), solo-workspace-server, page.tsx (app + mobile + sprint),
store compareStory, actions/sprints story-query, next-story test.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* refactor(dnd): remove drag-and-drop reorder for stories and tasks

- Remove reorderStoriesAction, reorderTasksAction, reorderSprintStoriesAction
- Delete REST route app/api/stories/[id]/tasks/reorder/route.ts
- Remove DnD from backlog story-panel and task-panel (flat list)
- Remove reorder-within-sprint branch from sprint-board-client handleDragEnd
- Switch SortableSprintRow to plain SprintRow using useDraggable (membership drag kept)
- Remove all DnD from task-list (status toggle + edit kept)
- Remove story-order/task-order/sprint-story-order/sprint-task-order mutation types and store handlers
- Remove related tests for deleted reorder route; fix sprint store tests

* feat(backlog): toon code-badge op backlog-taakkaarten

Geeft code={task.code} door aan <BacklogCard> in TaskCard (task-panel.tsx).
BacklogCard rendert de CodeBadge al conditionally — alleen de prop ontbrak.

* feat(migration): backfill story/task sort_order from code numeric suffix

One-time Prisma migration that sets sort_order = trailing numeric part
of code for all existing stories and tasks, consistent with
parseCodeNumber (fallback = Number.MAX_SAFE_INTEGER for non-conforming
codes). PBIs are intentionally excluded.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* docs+tests(sort-order): update for code-binding order on stories/tasks

- Rewrite docs/patterns/sort-order.md: float-insertion PBI only; story/task
  sort_order = parseCodeNumber(code), never drag/membership mutated
- Update plan-to-pbi-flow.md: sort_order auto, sprint_id param, priority=label
- Update make-plan.md: priority=label, array order = execution order
- Update rest-contract.md: fix sprint-tasks ordering, remove reorder endpoint
- Add ADR-0011: code is bindende volgordesleutel voor stories/taken
- Regenerate docs/INDEX.md via npm run docs
- Remove reorderStoriesAction/reorderTasksAction mocks from backlog tests
- Remove dnd-kit mocks from task-panel test (panel no longer uses dnd)
- Extend materializeIdeaPlanAction test: assert sort_order=parseCodeNumber(code)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

app/(app)/products/[id]/page.tsx

@@ -56,7 +56,7 @@ export default async function ProductBacklogPage({ params, searchParams }: Props
   const [stories, tasks] = await Promise.all([
     prisma.story.findMany({
       where: { product_id: id },
-      orderBy: [{ priority: 'asc' }, { sort_order: 'asc' }],
+      orderBy: [{ sort_order: 'asc' }, { created_at: 'asc' }],
       select: {
         id: true,
         code: true,
@@ -75,6 +75,7 @@ export default async function ProductBacklogPage({ params, searchParams }: Props
       where: { story: { pbi: { product_id: id } } },
       select: {
         id: true,
+        code: true,
         title: true,
         description: true,
         priority: true,
@@ -83,7 +84,7 @@ export default async function ProductBacklogPage({ params, searchParams }: Props
         story_id: true,
         created_at: true,
       },
-      orderBy: [{ priority: 'asc' }, { sort_order: 'asc' }],
+      orderBy: [{ sort_order: 'asc' }, { created_at: 'asc' }],
     }),
   ])
 

app/(app)/products/[id]/sprint/[sprintId]/page.tsx

@@ -72,7 +72,7 @@ export default async function SprintBoardPage({ params, searchParams }: Props) {
       where: { sprint_id: sprint.id },
       orderBy: { sort_order: 'asc' },
       include: {
-        tasks: { orderBy: [{ priority: 'asc' }, { sort_order: 'asc' }] },
+        tasks: { orderBy: [{ sort_order: 'asc' }] },
         assignee: { select: { id: true, username: true } },
       },
     }),
@@ -128,7 +128,7 @@ export default async function SprintBoardPage({ params, searchParams }: Props) {
     orderBy: [{ priority: 'asc' }, { sort_order: 'asc' }],
     include: {
       stories: {
-        orderBy: [{ priority: 'asc' }, { sort_order: 'asc' }],
+        orderBy: [{ sort_order: 'asc' }],
       },
     },
   })

app/(mobile)/m/products/[id]/page.tsx

@@ -42,7 +42,7 @@ export default async function MobileProductBacklogPage({ params, searchParams }:
   const [stories, tasks] = await Promise.all([
     prisma.story.findMany({
       where: { product_id: id },
-      orderBy: [{ priority: 'asc' }, { sort_order: 'asc' }],
+      orderBy: [{ sort_order: 'asc' }, { created_at: 'asc' }],
       select: {
         id: true,
         code: true,
@@ -61,6 +61,7 @@ export default async function MobileProductBacklogPage({ params, searchParams }:
       where: { story: { pbi: { product_id: id } } },
       select: {
         id: true,
+        code: true,
         title: true,
         description: true,
         priority: true,
@@ -69,7 +70,7 @@ export default async function MobileProductBacklogPage({ params, searchParams }:
         story_id: true,
         created_at: true,
       },
-      orderBy: [{ priority: 'asc' }, { sort_order: 'asc' }],
+      orderBy: [{ sort_order: 'asc' }, { created_at: 'asc' }],
     }),
   ])
 

app/api/pbis/[id]/stories/route.ts

@@ -30,7 +30,7 @@ export async function GET(
 
   const stories = await prisma.story.findMany({
     where: { pbi_id: id },
-    orderBy: [{ priority: 'asc' }, { sort_order: 'asc' }, { created_at: 'asc' }],
+    orderBy: [{ sort_order: 'asc' }, { created_at: 'asc' }],
     select: {
       id: true,
       code: true,

app/api/products/[id]/backlog/route.ts

@@ -46,7 +46,7 @@ export async function GET(
     }),
     prisma.story.findMany({
       where: { product_id: id },
-      orderBy: [{ priority: 'asc' }, { sort_order: 'asc' }, { created_at: 'asc' }],
+      orderBy: [{ sort_order: 'asc' }, { created_at: 'asc' }],
       select: {
         id: true,
         code: true,
@@ -66,6 +66,7 @@ export async function GET(
       orderBy: [{ sort_order: 'asc' }, { created_at: 'asc' }],
       select: {
         id: true,
+        code: true,
         title: true,
         description: true,
         priority: true,

app/api/products/[id]/claude-context/route.ts

@@ -58,7 +58,7 @@ export async function GET(
   if (activeSprint) {
     const story = await prisma.story.findFirst({
       where: { sprint_id: activeSprint.id, status: 'IN_SPRINT' },
-      orderBy: [{ priority: 'asc' }, { sort_order: 'asc' }],
+      orderBy: [{ sort_order: 'asc' }],
       include: {
         tasks: {
           orderBy: { sort_order: 'asc' },

app/api/products/[id]/next-story/route.ts

@@ -23,7 +23,7 @@ export async function GET(
 
   const story = await prisma.story.findFirst({
     where: { sprint_id: sprint.id, status: 'IN_SPRINT' },
-    orderBy: [{ priority: 'asc' }, { sort_order: 'asc' }],
+    orderBy: [{ sort_order: 'asc' }],
     include: {
       tasks: {
         orderBy: { sort_order: 'asc' },

app/api/sprints/[id]/tasks/route.ts

@@ -28,7 +28,6 @@ export async function GET(
     where: { sprint_id: id },
     orderBy: [
       { story: { sort_order: 'asc' } },
-      { priority: 'asc' },
       { sort_order: 'asc' },
     ],
     take: limit,

app/api/sprints/[id]/workspace/route.ts

@@ -44,7 +44,7 @@ export async function GET(
   const [stories, tasks] = await Promise.all([
     prisma.story.findMany({
       where: { sprint_id: id },
-      orderBy: [{ priority: 'asc' }, { sort_order: 'asc' }, { created_at: 'asc' }],
+      orderBy: [{ sort_order: 'asc' }, { created_at: 'asc' }],
       include: {
         tasks: { select: { id: true, status: true } },
         assignee: { select: { id: true, username: true } },

app/api/stories/[id]/tasks/reorder/route.ts

@@ -1,56 +0,0 @@
-import { authenticateApiRequest } from '@/lib/api-auth'
-import { prisma } from '@/lib/prisma'
-import { productAccessFilter } from '@/lib/product-access'
-import { z } from 'zod'
-
-const bodySchema = z.object({
-  task_ids: z.array(z.string()).min(1),
-})
-
-export async function PATCH(
-  request: Request,
-  { params }: { params: Promise<{ id: string }> }
-) {
-  const auth = await authenticateApiRequest(request)
-  if ('error' in auth) {
-    return Response.json({ error: auth.error }, { status: auth.status })
-  }
-  if (auth.isDemo) {
-    return Response.json({ error: 'Niet beschikbaar in demo-modus' }, { status: 403 })
-  }
-
-  const { id: storyId } = await params
-
-  let body: unknown
-  try {
-    body = await request.json()
-  } catch {
-    return Response.json({ error: 'Malformed JSON' }, { status: 400 })
-  }
-  const parsed = bodySchema.safeParse(body)
-  if (!parsed.success) {
-    return Response.json({ error: parsed.error.flatten() }, { status: 422 })
-  }
-
-  const story = await prisma.story.findFirst({
-    where: { id: storyId, product: productAccessFilter(auth.userId) },
-    include: { tasks: { select: { id: true } } },
-  })
-  if (!story) {
-    return Response.json({ error: 'Story niet gevonden' }, { status: 404 })
-  }
-
-  const storyTaskIds = new Set(story.tasks.map(t => t.id))
-  const invalidId = parsed.data.task_ids.find(id => !storyTaskIds.has(id))
-  if (invalidId) {
-    return Response.json({ error: `Ongeldig task_id: ${invalidId}` }, { status: 422 })
-  }
-
-  await prisma.$transaction(
-    parsed.data.task_ids.map((id, i) =>
-      prisma.task.update({ where: { id }, data: { sort_order: i + 1.0 } })
-    )
-  )
-
-  return Response.json({ success: true })
-}

app/api/stories/[id]/tasks/route.ts

@@ -33,6 +33,7 @@ export async function GET(
     orderBy: [{ sort_order: 'asc' }, { created_at: 'asc' }],
     select: {
       id: true,
+      code: true,
       title: true,
       description: true,
       priority: true,