fix(pl24): correct PSA VIN decode via FI/VIN-indexed flow + cycle-correct model year

PSA (Peugeot/Citroën/DS) VIN decode was systemically broken: the catalog
vin-group page returns all families unfiltered, so decode fell back to the first
family/salesType (a manual base variant) — yielding "{Brand} {VIN}" model names,
empty transmission, wrong model year, and manual-only parts trees (automatic
gearbox parts missing). Reported for a 1999 Peugeot 106 automatic shown as a 2029
manual with no automatic parts.

- New self-contained PL24PsaService: consumes PL24's FI flow (vin.action →
  hintstoken → FI page → json-vin-main-groups → json-vin-illustrations →
  vin-image-board). Reads model/year/transmission from the FI identification
  table; builds the VIN-indexed parts tree (correct per actual VIN). Does not
  touch Ford/Volvo/Nissan/Opel/Hyundai-Kia/Fiat.
- Orchestrator + categories.service route PSA VIN decode/drill to the new service.
- Cycle-correct extractModelYear in @sase/shared (X→1999, not 2029): resolve the
  30-yr VIN year code to the most-recent plausible year (≤ now+1); dedupe 6 copies.

Validated live against 13 already-decoded PSA VINs: 12/13 full trees with real
model/year/transmission; automatics correctly detected (106 BVA, 206 AL4, 3008 BVA8).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

apps/api/src/integrations/pl24/pl24.module.ts

@@ -1,10 +1,11 @@
 import { Module } from "@nestjs/common";
 import { PL24AuthService } from "./pl24-auth.service";
 import { PL24FordLegacyService } from "./pl24-ford-legacy.service";
+import { PL24PsaService } from "./pl24-psa.service";
 import { PL24Service } from "./pl24.service";
 
 @Module({
-  providers: [PL24Service, PL24AuthService, PL24FordLegacyService],
-  exports: [PL24Service, PL24AuthService, PL24FordLegacyService],
+  providers: [PL24Service, PL24AuthService, PL24FordLegacyService, PL24PsaService],
+  exports: [PL24Service, PL24AuthService, PL24FordLegacyService, PL24PsaService],
 })
 export class PL24Module {}