feat: parallel VIN decode (pcat+emex) + member since in profile settings

- Refactor VIN decode chain to launch PartsCatalogs and EMEX in parallel;
  EMEX is race-capped at 3 s — if it doesn't resolve in time, PL24 takes over
- Decision tree: pcat=1 → use pcat; else await EMEX result; else PL24; else candidates
- Add "Member Since" (Kayıt Tarihi) field to profile settings, sourced from user.createdAt
- Add createdAt to auth store User interface

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

apps/web/src/components/settings/settings-content.tsx

@@ -201,6 +201,19 @@ export function SettingsContent() {
                     onChange={(e) => setPhone(e.target.value)}
                   />
                 </div>
+                {user?.createdAt && (
+                  <div className="space-y-2">
+                    <Label>{t("settings.profile.memberSince")}</Label>
+                    <Input
+                      value={new Date(user.createdAt).toLocaleDateString("tr-TR", {
+                        day: "numeric",
+                        month: "long",
+                        year: "numeric",
+                      })}
+                      disabled
+                    />
+                  </div>
+                )}
                 <Button type="submit" disabled={savingProfile}>
                   {savingProfile ? t("common.saving") : t("common.save")}
                 </Button>

apps/web/src/messages/en.json

@@ -257,6 +257,7 @@
       "email": "Email",
       "phone": "Phone",
       "phonePlaceholder": "+90 5xx xxx xx xx",
+      "memberSince": "Member Since",
       "updated": "Profile updated.",
       "updateFailed": "Failed to update profile."
     },

apps/web/src/messages/tr.json

@@ -257,6 +257,7 @@
       "email": "E-posta",
       "phone": "Telefon",
       "phonePlaceholder": "+90 5xx xxx xx xx",
+      "memberSince": "Kayıt Tarihi",
       "updated": "Profil güncellendi.",
       "updateFailed": "Profil güncellenirken hata oluştu."
     },

apps/web/src/stores/auth.store.ts

@@ -7,6 +7,7 @@ interface User {
   image: string | null;
   role: string;
   referralCode: string | null;
+  createdAt: string | Date | null;
 }
 
 interface AuthState {