feat: QuickGroups shortcut — VIN SSD + vid=0 for fast category fetch

When EMEX DB has no vehicle match (Ford EU, Mercedes etc.), instead of
falling back to full on-demand VIN decode (~8s), use the VIN-decode SSD
directly with QuickGroups.aspx?c={catalog}&vid=0&ssd={vinSsd} (~2-3s).

Tested: Ford Focus CB4 VIN SSD returns 376 categories via QuickGroups.

New step 3.5 in the cascade:
1. pathData → matchByName (DB-only, ~50ms)
2. emexVehicleName → matchByName (DB-only, ~50ms)
3. matchBySsd wizard walk (DB, ~2-3s)
3.5. VIN SSD → QuickGroups shortcut (~2-3s) ← NEW
4. Fallback → full on-demand scrape (~8s)

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

apps/api/src/catalog/emex-catalog.service.ts

@@ -75,6 +75,8 @@ export interface EmexVehicleMatch {
   catalogCode: string;
   vehicleName: string | null;
   candidates: EmexVehicleDto[];
+  /** When DB has no match but wizard found the model, provides a QuickGroups URL for on-demand category fetch */
+  wizardQuickGroupsUrl?: string | null;
 }
 
 export interface EmexSearchResult {