PBI-47: schema, pause_context Zod, resumePausedSprintRunAction, PAUSED-banner UI (#137)

Scrum4Me-side counterpart of scrum4me-mcp@f7f5a48 (PBI-9 + PBI-47):

- prisma migration: ClaudeJob.{base_sha,head_sha} + SprintRun.pause_context
- lib/pause-context.ts: Zod schema + parsePauseContext + pauseReasonLabel
  helper; single source of truth for the JSON pause_context shape produced
  by the mcp sprint-run flow (MERGE_CONFLICT pause)
- actions/sprint-runs.ts: resumePausedSprintRunAction — separate from the
  existing FAILED-resume flow, requires SprintRun.status === PAUSED, closes
  the linked ClaudeQuestion, clears pause_context, sets RUNNING/QUEUED based
  on whether a claim is still active
- components/sprint/sprint-run-controls.tsx: PAUSED banner with reason label,
  PR link, conflict-files list (max 5 + "+N more"), Resume button with
  confirm() guard
- app/(app)/products/[id]/sprint/page.tsx: load pause_context from active
  SprintRun and pass through to SprintRunControls

All MD3 tokens (warning-container, on-warning-container, primary). No raw
Tailwind utility colours.

Tests: 532 passing across 72 files (Scrum4Me side).

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

components/sprint/sprint-run-controls.tsx

@@ -5,6 +5,7 @@ import { toast } from 'sonner'
 import {
   startSprintRunAction,
   resumeSprintAction,
+  resumePausedSprintRunAction,
   cancelSprintRunAction,
   type PreFlightBlocker,
 } from '@/actions/sprint-runs'
@@ -17,6 +18,7 @@ import {
   DialogHeader,
   DialogTitle,
 } from '@/components/ui/dialog'
+import { type PauseContext, pauseReasonLabel } from '@/lib/pause-context'
 
 type SprintStatusValue = 'ACTIVE' | 'COMPLETED' | 'FAILED'
 type SprintRunStatusValue =
@@ -34,6 +36,7 @@ interface Props {
   sprintStatus: SprintStatusValue
   activeSprintRunId: string | null
   activeSprintRunStatus: SprintRunStatusValue
+  pauseContext: PauseContext | null
   isDemo: boolean
 }
 
@@ -60,6 +63,7 @@ export function SprintRunControls({
   sprintStatus,
   activeSprintRunId,
   activeSprintRunStatus,
+  pauseContext,
   isDemo,
 }: Props) {
   const [pending, startTransition] = useTransition()
@@ -73,6 +77,8 @@ export function SprintRunControls({
 
   const canStart = sprintStatus === 'ACTIVE' && !hasActiveRun
   const canResume = sprintStatus === 'FAILED'
+  const canResumePaused =
+    activeSprintRunStatus === 'PAUSED' && pauseContext !== null
   const canCancel = hasActiveRun
 
   function handleStart() {
@@ -101,6 +107,25 @@ export function SprintRunControls({
     })
   }
 
+  function handleResumePaused() {
+    if (!activeSprintRunId || !pauseContext) return
+    if (
+      !confirm(
+        `Sprint hervatten? Bevestig dat het ${pauseReasonLabel(
+          pauseContext.pause_reason,
+        ).toLowerCase()} is opgelost.`,
+      )
+    )
+      return
+    startTransition(async () => {
+      const result = await resumePausedSprintRunAction({
+        sprint_run_id: activeSprintRunId,
+      })
+      if (result.ok) toast.success('Sprint hervat')
+      else toast.error(result.error)
+    })
+  }
+
   function handleCancel() {
     if (!activeSprintRunId) return
     if (!confirm('Sprint annuleren? Openstaande taken blijven TO_DO.')) return
@@ -113,6 +138,39 @@ export function SprintRunControls({
 
   return (
     <>
+      {canResumePaused && pauseContext && (
+        <div className="rounded-md border border-warning/40 bg-warning-container/20 p-3 mb-2">
+          <div className="text-xs uppercase tracking-wide text-on-warning-container">
+            Gepauzeerd: {pauseReasonLabel(pauseContext.pause_reason)}
+          </div>
+          <a
+            href={pauseContext.pr_url}
+            target="_blank"
+            rel="noreferrer"
+            className="text-sm text-primary hover:underline break-all"
+          >
+            {pauseContext.pr_url}
+          </a>
+          {pauseContext.conflict_files.length > 0 && (
+            <ul className="mt-1 text-xs text-muted-foreground">
+              {pauseContext.conflict_files.slice(0, 5).map((f) => (
+                <li key={f}>· {f}</li>
+              ))}
+              {pauseContext.conflict_files.length > 5 && (
+                <li>· + {pauseContext.conflict_files.length - 5} meer</li>
+              )}
+            </ul>
+          )}
+          <Button
+            size="sm"
+            onClick={handleResumePaused}
+            disabled={pending || isDemo}
+            className="text-xs mt-2"
+          >
+            Hervat gepauzeerde sprint
+          </Button>
+        </div>
+      )}
       <div className="flex items-center gap-2">
         {canStart && (
           <Button