fix: need selector on results page + retail budget parsing

- Results page: chip strip shows all saved searches — click to switch without
  creating a new search. Defaults to first need instead of most-recently-created
  so pre-existing mock needs load immediately on navigation.
- AI parser: asset-type-aware monthly budget threshold (RETAIL: 500, others: 150)
  so "150 CHF/m²" for retail is correctly converted to 1800 CHF/m²/year instead
  of being stored as an impossibly low annual value that excludes all properties.

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

src/pages/demand/Results.tsx

@@ -44,6 +44,8 @@ export default function Results() {
     (localStorage.getItem('view-results') as 'list' | 'grid') ?? 'list'
   )
 
+  const [selectedNeedId, setSelectedNeedId] = useState<string | undefined>(undefined)
+
   // When coming from NeedBuilder, invalidate so the freshly created need is included
   const activeNeedIdFromNav = (location.state as { activeNeedId?: string } | null)?.activeNeedId
 
@@ -55,14 +57,12 @@ export default function Results() {
     gcTime: 0,
   })
 
-  // Prefer the ID passed from NeedBuilder; fall back to most-recently-created
-  const activeNeed = needResp?.data
-    ? activeNeedIdFromNav
-      ? (needResp.data.find(n => n.id === activeNeedIdFromNav) ?? needResp.data[0])
-      : [...needResp.data].sort((a, b) =>
-          new Date(b.createdAt).getTime() - new Date(a.createdAt).getTime()
-        )[0]
-    : undefined
+  const allNeeds = needResp?.data ?? []
+
+  // Priority: explicit user selection → nav (just came from NeedBuilder) → first need in list
+  const effectiveNeedId = selectedNeedId ?? activeNeedIdFromNav ?? allNeeds[0]?.id
+
+  const activeNeed = allNeeds.find(n => n.id === effectiveNeedId) ?? allNeeds[0]
 
   // Ensure query cache is invalidated when a new need was just created
   if (activeNeedIdFromNav) {
@@ -127,6 +127,25 @@ export default function Results() {
       <Box sx={{ flex: 1, overflowY: 'auto', px: 3, py: 3 }}>
         {activeNeed && (
           <Card sx={{ bgcolor: '#eff6ff', p: 2, mb: 2, border: '1px solid #bfdbfe' }}>
+            {/* Need selector — all saved searches as chips */}
+            {allNeeds.length > 1 && (
+              <Box sx={{ display: 'flex', flexWrap: 'wrap', gap: 0.75, mb: 1.5 }}>
+                {allNeeds.map(n => (
+                  <Chip
+                    key={n.id}
+                    label={`${n.companyName} · ${n.assetType}`}
+                    size="small"
+                    variant={n.id === activeNeed.id ? 'filled' : 'outlined'}
+                    onClick={() => setSelectedNeedId(n.id)}
+                    sx={n.id === activeNeed.id
+                      ? { fontSize: '0.68rem', height: 22, bgcolor: '#1e3a5f', color: 'white', cursor: 'pointer' }
+                      : { fontSize: '0.68rem', height: 22, color: '#64748b', borderColor: '#cbd5e1', cursor: 'pointer' }
+                    }
+                  />
+                ))}
+              </Box>
+            )}
+
             <Box sx={{ display: 'flex', alignItems: 'flex-start', justifyContent: 'space-between', gap: 2 }}>
               <Box>
                 <Typography variant="subtitle2" sx={{ fontWeight: 700, mb: 0.5 }} color="#1e3a5f">