refactor: premium design polish — cards, results, grid view

- PropertyIntelligenceCard: aspect-ratio image, hover animation, compact
  data-completeness row, tighter body padding
- Results: replace verbose Card with compact active-search strip, remove
  DecisionContextPanel
- Properties: add 3/5/10 column toggle in grid view, persist to localStorage
- NeedInput, UnifiedResultCard/Feed, MatchCardViewModel: cleanup from
  earlier session

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

src/components/match-card/MatchCardViewModel.ts

@@ -86,6 +86,10 @@ export interface MatchCardViewModel {
   preMarketUnit?: PropertyUnit   // specific unit being released pre-market
   preMarketAllUnits?: PropertyUnit[] // all units of the backing property
 
+  // Key metrics for compact display (Ginesta-style metric line)
+  areaSqm?: number
+  rentPerSqm?: number
+
   // Score transparency
   scoreBreakdown?: {
     hardMatchScore: number