feat: F015 shortlist management

3-panel Shortlists page with left list, center detail, right decision brief panel. AddToShortlistDialog wired into result feed cards and match detail. Full DRAFT→REVIEW_READY→FINALIZED workflow, AI-generated decision brief draft, duplicate prevention, and compare-view integration.

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

src/pages/demand/MatchDetail.tsx

@@ -6,6 +6,8 @@ import { propertyService } from '../../services/propertyService'
 import { needService } from '../../services/needService'
 import { futureSignalService } from '../../services/futureSignalService'
 import { useCompareStore } from '../../stores/compareStore'
+import { useShortlistStore } from '../../stores/shortlistStore'
+import { AddToShortlistDialog } from '../../components/shortlist'
 import { MatchReasonList } from '../../components/match-card/MatchReasonList'
 import {
   MatchDetailHeader,
@@ -37,6 +39,7 @@ export default function MatchDetail() {
   const { matchId } = useParams<{ matchId: string }>()
   const navigate = useNavigate()
   const { addToCompare } = useCompareStore()
+  const { openAddDialog } = useShortlistStore()
 
   const { data: match, isLoading } = useMatchDetail(matchId ?? '')
 
@@ -112,15 +115,30 @@ export default function MatchDetail() {
 
   const handleBack = () => navigate(-1)
 
+  const handleShortlist = () => {
+    const title = property?.title ?? signal?.companyName ?? signal?.locationHint ?? match.id
+    openAddDialog({
+      resultId: match.id,
+      resultType: match.resultType ?? 'VERIFIED_PORTFOLIO',
+      title,
+      matchScore: match.matchScore,
+      confidenceScore: match.confidenceLevel,
+      sourceLabel: property?.sourceLabel ?? match.resultType ?? 'VERIFIED_PORTFOLIO',
+      addedBy: 'admin@ideal-sharing.ch',
+      propertyId: property?.id,
+    })
+  }
+
   return (
     <Box sx={{ px: 3, py: 2 }}>
+      <AddToShortlistDialog />
       <MatchDetailHeader
         match={match}
         property={property}
         signal={signal}
         onBack={handleBack}
         onCompare={handleCompare}
-        onShortlist={() => {}}
+        onShortlist={handleShortlist}
       />
 
       <Box sx={{ display: 'flex', gap: 3, alignItems: 'flex-start' }}>
@@ -165,7 +183,7 @@ export default function MatchDetail() {
           <NextActionsPanel
             match={match}
             onCompare={handleCompare}
-            onShortlist={() => {}}
+            onShortlist={handleShortlist}
             onReview={() => {}}
             onReject={() => {}}
           />