feat(capa): allow overdue CAPAs to be acted on, fix owner page stats

- CapaOwnerActions: add 'overdue' to open/reopened branch so DB-overdue
  CAPAs show 'Mark In Progress' button (cron transitions open→overdue)
- capa-owner page: compute overdue at runtime (dueDate < today) so stats
  and red highlight are correct even before cron runs
- openCount now excludes overdue items to avoid double-counting
- Add CapaOwnerActions test suite covering all status transitions

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01HEYxFQiCyxJvnBCoZeYzB9

app/(protected)/capa-owner/page.tsx

@@ -52,8 +52,14 @@ export default async function CapaOwnerPage() {
     .orderBy(asc(capaActions.dueDate))
   )
 
-  const openCount = rows.filter(c => ['open', 'in_progress', 'reopened'].includes(c.status)).length
-  const overdueCount = rows.filter(c => c.status === 'overdue').length
+  const today = new Date().toISOString().slice(0, 10)
+  function isCapaOverdue(c: { status: string; dueDate: string | null }): boolean {
+    if (c.status === 'overdue') return true
+    return (c.status === 'open' || c.status === 'in_progress') && !!c.dueDate && c.dueDate < today
+  }
+
+  const openCount = rows.filter(c => ['open', 'in_progress', 'reopened'].includes(c.status) && !isCapaOverdue(c)).length
+  const overdueCount = rows.filter(c => isCapaOverdue(c)).length
   const doneCount = rows.filter(c => ['verified', 'closed'].includes(c.status)).length
 
   const PRIORITY_COLORS: Record<string, string> = {
@@ -82,7 +88,7 @@ export default async function CapaOwnerPage() {
       ) : (
         <div className="bg-white rounded-xl shadow-sm divide-y divide-gray-50">
           {activeRows.map(capa => {
-            const isOverdue = capa.status === 'overdue'
+            const isOverdue = isCapaOverdue(capa)
             return (
               <div key={capa.id} className={`p-4 ${isOverdue ? 'bg-red-50' : ''}`}>
                 <div className="flex items-start justify-between gap-4">